Commit | Line | Data |
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c906108c | 1 | /* Main code for remote server for GDB. |
ecd75fc8 | 2 | Copyright (C) 1989-2014 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "server.h" | |
623b6bdf | 20 | #include "gdbthread.h" |
d1feda86 | 21 | #include "agent.h" |
14a00470 | 22 | #include "notif.h" |
3aee8918 | 23 | #include "tdesc.h" |
9c3d6531 | 24 | #include "rsp-low.h" |
c906108c | 25 | |
87ce2a04 | 26 | #include <ctype.h> |
a9fa9f7d | 27 | #include <unistd.h> |
68070c10 | 28 | #if HAVE_SIGNAL_H |
a9fa9f7d | 29 | #include <signal.h> |
68070c10 | 30 | #endif |
87ce2a04 | 31 | #include "gdb_vecs.h" |
8bdce1ff | 32 | #include "gdb_wait.h" |
9accd112 | 33 | #include "btrace-common.h" |
602e3198 | 34 | #include "filestuff.h" |
c144c7a0 | 35 | #include "tracepoint.h" |
799cdc37 | 36 | #include "dll.h" |
533b0600 | 37 | #include "hostio.h" |
a9fa9f7d | 38 | |
122f36ef PA |
39 | /* The thread set with an `Hc' packet. `Hc' is deprecated in favor of |
40 | `vCont'. Note the multi-process extensions made `vCont' a | |
41 | requirement, so `Hc pPID.TID' is pretty much undefined. So | |
42 | CONT_THREAD can be null_ptid for no `Hc' thread, minus_one_ptid for | |
43 | resuming all threads of the process (again, `Hc' isn't used for | |
40e91bc7 | 44 | multi-process), or a specific thread ptid_t. */ |
95954743 | 45 | ptid_t cont_thread; |
122f36ef PA |
46 | |
47 | /* The thread set with an `Hg' packet. */ | |
95954743 | 48 | ptid_t general_thread; |
5b1c542e | 49 | |
0d62e5e8 DJ |
50 | int server_waiting; |
51 | ||
2d717e4f | 52 | static int extended_protocol; |
2d717e4f DJ |
53 | static int response_needed; |
54 | static int exit_requested; | |
55 | ||
03f2bd59 JK |
56 | /* --once: Exit after the first connection has closed. */ |
57 | int run_once; | |
58 | ||
95954743 | 59 | int multi_process; |
bd99dc85 PA |
60 | int non_stop; |
61 | ||
03583c20 UW |
62 | /* Whether we should attempt to disable the operating system's address |
63 | space randomization feature before starting an inferior. */ | |
64 | int disable_randomization = 1; | |
65 | ||
ccd213ac | 66 | static char **program_argv, **wrapper_argv; |
2d717e4f | 67 | |
a493e3e2 PA |
68 | int pass_signals[GDB_SIGNAL_LAST]; |
69 | int program_signals[GDB_SIGNAL_LAST]; | |
9b224c5e | 70 | int program_signals_p; |
89be2091 | 71 | |
a9fa9f7d DJ |
72 | /* The PID of the originally created or attached inferior. Used to |
73 | send signals to the process when GDB sends us an asynchronous interrupt | |
74 | (user hitting Control-C in the client), and to wait for the child to exit | |
75 | when no longer debugging it. */ | |
76 | ||
a1928bad | 77 | unsigned long signal_pid; |
a9fa9f7d | 78 | |
290fadea RS |
79 | #ifdef SIGTTOU |
80 | /* A file descriptor for the controlling terminal. */ | |
81 | int terminal_fd; | |
82 | ||
83 | /* TERMINAL_FD's original foreground group. */ | |
84 | pid_t old_foreground_pgrp; | |
85 | ||
86 | /* Hand back terminal ownership to the original foreground group. */ | |
87 | ||
88 | static void | |
89 | restore_old_foreground_pgrp (void) | |
90 | { | |
91 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
92 | } | |
93 | #endif | |
94 | ||
ec56be1b PA |
95 | /* Set if you want to disable optional thread related packets support |
96 | in gdbserver, for the sake of testing GDB against stubs that don't | |
97 | support them. */ | |
98 | int disable_packet_vCont; | |
99 | int disable_packet_Tthread; | |
100 | int disable_packet_qC; | |
101 | int disable_packet_qfThreadInfo; | |
102 | ||
5b1c542e PA |
103 | /* Last status reported to GDB. */ |
104 | static struct target_waitstatus last_status; | |
95954743 | 105 | static ptid_t last_ptid; |
5b1c542e | 106 | |
bd99dc85 PA |
107 | static char *own_buf; |
108 | static unsigned char *mem_buf; | |
109 | ||
14a00470 YQ |
110 | /* A sub-class of 'struct notif_event' for stop, holding information |
111 | relative to a single stop reply. We keep a queue of these to | |
112 | push to GDB in non-stop mode. */ | |
113 | ||
bd99dc85 PA |
114 | struct vstop_notif |
115 | { | |
14a00470 | 116 | struct notif_event base; |
bd99dc85 PA |
117 | |
118 | /* Thread or process that got the event. */ | |
95954743 | 119 | ptid_t ptid; |
bd99dc85 PA |
120 | |
121 | /* Event info. */ | |
122 | struct target_waitstatus status; | |
123 | }; | |
124 | ||
14a00470 | 125 | DEFINE_QUEUE_P (notif_event_p); |
bd99dc85 PA |
126 | |
127 | /* Put a stop reply to the stop reply queue. */ | |
128 | ||
129 | static void | |
95954743 | 130 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 131 | { |
14a00470 | 132 | struct vstop_notif *new_notif = xmalloc (sizeof (*new_notif)); |
bd99dc85 | 133 | |
bd99dc85 PA |
134 | new_notif->ptid = ptid; |
135 | new_notif->status = *status; | |
136 | ||
14a00470 | 137 | notif_event_enque (¬if_stop, (struct notif_event *) new_notif); |
bd99dc85 PA |
138 | } |
139 | ||
14a00470 YQ |
140 | static int |
141 | remove_all_on_match_pid (QUEUE (notif_event_p) *q, | |
142 | QUEUE_ITER (notif_event_p) *iter, | |
143 | struct notif_event *event, | |
144 | void *data) | |
bd99dc85 | 145 | { |
14a00470 | 146 | int *pid = data; |
d20a8ad9 | 147 | |
14a00470 YQ |
148 | if (*pid == -1 |
149 | || ptid_get_pid (((struct vstop_notif *) event)->ptid) == *pid) | |
bd99dc85 | 150 | { |
14a00470 YQ |
151 | if (q->free_func != NULL) |
152 | q->free_func (event); | |
153 | ||
154 | QUEUE_remove_elem (notif_event_p, q, iter); | |
bd99dc85 | 155 | } |
14a00470 YQ |
156 | |
157 | return 1; | |
bd99dc85 PA |
158 | } |
159 | ||
95954743 PA |
160 | /* Get rid of the currently pending stop replies for PID. If PID is |
161 | -1, then apply to all processes. */ | |
bd99dc85 PA |
162 | |
163 | static void | |
95954743 | 164 | discard_queued_stop_replies (int pid) |
bd99dc85 | 165 | { |
14a00470 YQ |
166 | QUEUE_iterate (notif_event_p, notif_stop.queue, |
167 | remove_all_on_match_pid, &pid); | |
bd99dc85 PA |
168 | } |
169 | ||
bd99dc85 | 170 | static void |
14a00470 | 171 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 172 | { |
14a00470 YQ |
173 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
174 | ||
175 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
176 | } |
177 | ||
14a00470 YQ |
178 | struct notif_server notif_stop = |
179 | { | |
180 | "vStopped", "Stop", NULL, vstop_notif_reply, | |
181 | }; | |
182 | ||
2d717e4f DJ |
183 | static int |
184 | target_running (void) | |
185 | { | |
649ebbca | 186 | return get_first_thread () != NULL; |
2d717e4f DJ |
187 | } |
188 | ||
fc620387 | 189 | static int |
5b1c542e | 190 | start_inferior (char **argv) |
c906108c | 191 | { |
ccd213ac | 192 | char **new_argv = argv; |
2d717e4f | 193 | |
ccd213ac DJ |
194 | if (wrapper_argv != NULL) |
195 | { | |
196 | int i, count = 1; | |
197 | ||
198 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
199 | count++; | |
200 | for (i = 0; argv[i] != NULL; i++) | |
201 | count++; | |
202 | new_argv = alloca (sizeof (char *) * count); | |
203 | count = 0; | |
204 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
205 | new_argv[count++] = wrapper_argv[i]; | |
206 | for (i = 0; argv[i] != NULL; i++) | |
207 | new_argv[count++] = argv[i]; | |
208 | new_argv[count] = NULL; | |
209 | } | |
210 | ||
65730243 DE |
211 | if (debug_threads) |
212 | { | |
213 | int i; | |
214 | for (i = 0; new_argv[i]; ++i) | |
87ce2a04 DE |
215 | debug_printf ("new_argv[%d] = \"%s\"\n", i, new_argv[i]); |
216 | debug_flush (); | |
65730243 DE |
217 | } |
218 | ||
b80864fb | 219 | #ifdef SIGTTOU |
a9fa9f7d DJ |
220 | signal (SIGTTOU, SIG_DFL); |
221 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 222 | #endif |
a9fa9f7d | 223 | |
ccd213ac | 224 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 225 | |
c588c53c MS |
226 | /* FIXME: we don't actually know at this point that the create |
227 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 228 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 229 | signal_pid); |
b80864fb | 230 | fflush (stderr); |
a9fa9f7d | 231 | |
b80864fb | 232 | #ifdef SIGTTOU |
a9fa9f7d DJ |
233 | signal (SIGTTOU, SIG_IGN); |
234 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
235 | terminal_fd = fileno (stderr); |
236 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
237 | tcsetpgrp (terminal_fd, signal_pid); | |
238 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 239 | #endif |
c906108c | 240 | |
ccd213ac DJ |
241 | if (wrapper_argv != NULL) |
242 | { | |
243 | struct thread_resume resume_info; | |
ccd213ac | 244 | |
ee47b2f8 | 245 | memset (&resume_info, 0, sizeof (resume_info)); |
95954743 | 246 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 247 | resume_info.kind = resume_continue; |
ccd213ac | 248 | resume_info.sig = 0; |
ccd213ac | 249 | |
06db92f0 | 250 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 251 | |
5b1c542e PA |
252 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
253 | return signal_pid; | |
ccd213ac DJ |
254 | |
255 | do | |
256 | { | |
2bd7c093 | 257 | (*the_target->resume) (&resume_info, 1); |
ccd213ac | 258 | |
06db92f0 | 259 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e PA |
260 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
261 | return signal_pid; | |
d20a8ad9 | 262 | |
0bfdf32f GB |
263 | current_thread->last_resume_kind = resume_stop; |
264 | current_thread->last_status = last_status; | |
ccd213ac | 265 | } |
a493e3e2 | 266 | while (last_status.value.sig != GDB_SIGNAL_TRAP); |
ccd213ac | 267 | |
5b1c542e | 268 | return signal_pid; |
ccd213ac DJ |
269 | } |
270 | ||
5b1c542e PA |
271 | /* Wait till we are at 1st instruction in program, return new pid |
272 | (assuming success). */ | |
95954743 | 273 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 274 | |
d20a8ad9 PA |
275 | if (last_status.kind != TARGET_WAITKIND_EXITED |
276 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
277 | { | |
0bfdf32f GB |
278 | current_thread->last_resume_kind = resume_stop; |
279 | current_thread->last_status = last_status; | |
d20a8ad9 PA |
280 | } |
281 | ||
5b1c542e | 282 | return signal_pid; |
c906108c SS |
283 | } |
284 | ||
45b7b345 | 285 | static int |
5b1c542e | 286 | attach_inferior (int pid) |
45b7b345 DJ |
287 | { |
288 | /* myattach should return -1 if attaching is unsupported, | |
289 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 290 | |
45b7b345 DJ |
291 | if (myattach (pid) != 0) |
292 | return -1; | |
293 | ||
6910d122 | 294 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 295 | fflush (stderr); |
6910d122 | 296 | |
a9fa9f7d DJ |
297 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
298 | attach function, so that it can be the main thread instead of | |
299 | whichever we were told to attach to. */ | |
300 | signal_pid = pid; | |
301 | ||
bd99dc85 PA |
302 | if (!non_stop) |
303 | { | |
95954743 | 304 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
305 | |
306 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
307 | process using the "attach" command, but this is different; it's | |
308 | just using "target remote". Pretend it's just starting up. */ | |
309 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 PA |
310 | && last_status.value.sig == GDB_SIGNAL_STOP) |
311 | last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 | 312 | |
0bfdf32f GB |
313 | current_thread->last_resume_kind = resume_stop; |
314 | current_thread->last_status = last_status; | |
bd99dc85 | 315 | } |
9db87ebd | 316 | |
45b7b345 DJ |
317 | return 0; |
318 | } | |
319 | ||
c906108c | 320 | extern int remote_debug; |
ce3a066d | 321 | |
0876f84a DJ |
322 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
323 | or -1 otherwise. */ | |
324 | ||
325 | static int | |
d08aafef | 326 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 327 | { |
d08aafef PA |
328 | /* After the read marker and annex, qXfer looks like a |
329 | traditional 'm' packet. */ | |
330 | decode_m_packet (buf, ofs, len); | |
331 | ||
332 | return 0; | |
333 | } | |
334 | ||
335 | static int | |
336 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
337 | { | |
338 | /* Extract and NUL-terminate the object. */ | |
339 | *object = buf; | |
340 | while (*buf && *buf != ':') | |
341 | buf++; | |
342 | if (*buf == '\0') | |
343 | return -1; | |
344 | *buf++ = 0; | |
345 | ||
346 | /* Extract and NUL-terminate the read/write action. */ | |
347 | *rw = buf; | |
348 | while (*buf && *buf != ':') | |
349 | buf++; | |
350 | if (*buf == '\0') | |
351 | return -1; | |
352 | *buf++ = 0; | |
353 | ||
0876f84a DJ |
354 | /* Extract and NUL-terminate the annex. */ |
355 | *annex = buf; | |
356 | while (*buf && *buf != ':') | |
357 | buf++; | |
358 | if (*buf == '\0') | |
359 | return -1; | |
360 | *buf++ = 0; | |
361 | ||
d08aafef | 362 | *offset = buf; |
0876f84a DJ |
363 | return 0; |
364 | } | |
365 | ||
366 | /* Write the response to a successful qXfer read. Returns the | |
367 | length of the (binary) data stored in BUF, corresponding | |
368 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
369 | the first character of the response. */ | |
370 | static int | |
23181151 | 371 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
0876f84a DJ |
372 | { |
373 | int out_len; | |
374 | ||
375 | if (is_more) | |
376 | buf[0] = 'm'; | |
377 | else | |
378 | buf[0] = 'l'; | |
379 | ||
380 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, | |
381 | PBUFSIZ - 2) + 1; | |
382 | } | |
383 | ||
9accd112 MM |
384 | /* Handle btrace enabling. */ |
385 | ||
386 | static const char * | |
387 | handle_btrace_enable (struct thread_info *thread) | |
388 | { | |
389 | if (thread->btrace != NULL) | |
390 | return "E.Btrace already enabled."; | |
391 | ||
392 | thread->btrace = target_enable_btrace (thread->entry.id); | |
393 | if (thread->btrace == NULL) | |
394 | return "E.Could not enable btrace."; | |
395 | ||
396 | return NULL; | |
397 | } | |
398 | ||
399 | /* Handle btrace disabling. */ | |
400 | ||
401 | static const char * | |
402 | handle_btrace_disable (struct thread_info *thread) | |
403 | { | |
404 | ||
405 | if (thread->btrace == NULL) | |
406 | return "E.Branch tracing not enabled."; | |
407 | ||
408 | if (target_disable_btrace (thread->btrace) != 0) | |
409 | return "E.Could not disable branch tracing."; | |
410 | ||
411 | thread->btrace = NULL; | |
412 | return NULL; | |
413 | } | |
414 | ||
415 | /* Handle the "Qbtrace" packet. */ | |
416 | ||
417 | static int | |
418 | handle_btrace_general_set (char *own_buf) | |
419 | { | |
420 | struct thread_info *thread; | |
421 | const char *err; | |
422 | char *op; | |
423 | ||
424 | if (strncmp ("Qbtrace:", own_buf, strlen ("Qbtrace:")) != 0) | |
425 | return 0; | |
426 | ||
427 | op = own_buf + strlen ("Qbtrace:"); | |
428 | ||
429 | if (!target_supports_btrace ()) | |
430 | { | |
431 | strcpy (own_buf, "E.Target does not support branch tracing."); | |
432 | return -1; | |
433 | } | |
434 | ||
435 | if (ptid_equal (general_thread, null_ptid) | |
436 | || ptid_equal (general_thread, minus_one_ptid)) | |
437 | { | |
438 | strcpy (own_buf, "E.Must select a single thread."); | |
439 | return -1; | |
440 | } | |
441 | ||
442 | thread = find_thread_ptid (general_thread); | |
443 | if (thread == NULL) | |
444 | { | |
445 | strcpy (own_buf, "E.No such thread."); | |
446 | return -1; | |
447 | } | |
448 | ||
449 | err = NULL; | |
450 | ||
451 | if (strcmp (op, "bts") == 0) | |
452 | err = handle_btrace_enable (thread); | |
453 | else if (strcmp (op, "off") == 0) | |
454 | err = handle_btrace_disable (thread); | |
455 | else | |
456 | err = "E.Bad Qbtrace operation. Use bts or off."; | |
457 | ||
458 | if (err != 0) | |
459 | strcpy (own_buf, err); | |
460 | else | |
461 | write_ok (own_buf); | |
462 | ||
463 | return 1; | |
464 | } | |
465 | ||
89be2091 | 466 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
467 | |
468 | static void | |
89be2091 DJ |
469 | handle_general_set (char *own_buf) |
470 | { | |
471 | if (strncmp ("QPassSignals:", own_buf, strlen ("QPassSignals:")) == 0) | |
472 | { | |
a493e3e2 | 473 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
474 | const char *p = own_buf + strlen ("QPassSignals:"); |
475 | CORE_ADDR cursig; | |
476 | ||
477 | p = decode_address_to_semicolon (&cursig, p); | |
478 | for (i = 0; i < numsigs; i++) | |
479 | { | |
480 | if (i == cursig) | |
481 | { | |
482 | pass_signals[i] = 1; | |
483 | if (*p == '\0') | |
484 | /* Keep looping, to clear the remaining signals. */ | |
485 | cursig = -1; | |
486 | else | |
487 | p = decode_address_to_semicolon (&cursig, p); | |
488 | } | |
489 | else | |
490 | pass_signals[i] = 0; | |
491 | } | |
492 | strcpy (own_buf, "OK"); | |
493 | return; | |
494 | } | |
495 | ||
9b224c5e PA |
496 | if (strncmp ("QProgramSignals:", own_buf, strlen ("QProgramSignals:")) == 0) |
497 | { | |
a493e3e2 | 498 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
499 | const char *p = own_buf + strlen ("QProgramSignals:"); |
500 | CORE_ADDR cursig; | |
501 | ||
502 | program_signals_p = 1; | |
503 | ||
504 | p = decode_address_to_semicolon (&cursig, p); | |
505 | for (i = 0; i < numsigs; i++) | |
506 | { | |
507 | if (i == cursig) | |
508 | { | |
509 | program_signals[i] = 1; | |
510 | if (*p == '\0') | |
511 | /* Keep looping, to clear the remaining signals. */ | |
512 | cursig = -1; | |
513 | else | |
514 | p = decode_address_to_semicolon (&cursig, p); | |
515 | } | |
516 | else | |
517 | program_signals[i] = 0; | |
518 | } | |
519 | strcpy (own_buf, "OK"); | |
520 | return; | |
521 | } | |
522 | ||
a6f3e723 SL |
523 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
524 | { | |
525 | if (remote_debug) | |
526 | { | |
527 | fprintf (stderr, "[noack mode enabled]\n"); | |
528 | fflush (stderr); | |
529 | } | |
530 | ||
531 | noack_mode = 1; | |
532 | write_ok (own_buf); | |
533 | return; | |
534 | } | |
535 | ||
bd99dc85 PA |
536 | if (strncmp (own_buf, "QNonStop:", 9) == 0) |
537 | { | |
538 | char *mode = own_buf + 9; | |
539 | int req = -1; | |
540 | char *req_str; | |
541 | ||
542 | if (strcmp (mode, "0") == 0) | |
543 | req = 0; | |
544 | else if (strcmp (mode, "1") == 0) | |
545 | req = 1; | |
546 | else | |
547 | { | |
548 | /* We don't know what this mode is, so complain to | |
549 | GDB. */ | |
550 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
551 | own_buf); | |
552 | write_enn (own_buf); | |
553 | return; | |
554 | } | |
555 | ||
556 | req_str = req ? "non-stop" : "all-stop"; | |
557 | if (start_non_stop (req) != 0) | |
558 | { | |
559 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
560 | write_enn (own_buf); | |
561 | return; | |
562 | } | |
563 | ||
564 | non_stop = req; | |
565 | ||
566 | if (remote_debug) | |
567 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
568 | ||
569 | write_ok (own_buf); | |
570 | return; | |
571 | } | |
572 | ||
03583c20 UW |
573 | if (strncmp ("QDisableRandomization:", own_buf, |
574 | strlen ("QDisableRandomization:")) == 0) | |
575 | { | |
576 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
577 | ULONGEST setting; | |
578 | ||
579 | unpack_varlen_hex (packet, &setting); | |
580 | disable_randomization = setting; | |
581 | ||
582 | if (remote_debug) | |
583 | { | |
584 | if (disable_randomization) | |
585 | fprintf (stderr, "[address space randomization disabled]\n"); | |
586 | else | |
587 | fprintf (stderr, "[address space randomization enabled]\n"); | |
588 | } | |
589 | ||
590 | write_ok (own_buf); | |
591 | return; | |
592 | } | |
593 | ||
219f2f23 PA |
594 | if (target_supports_tracepoints () |
595 | && handle_tracepoint_general_set (own_buf)) | |
596 | return; | |
597 | ||
d1feda86 YQ |
598 | if (strncmp ("QAgent:", own_buf, strlen ("QAgent:")) == 0) |
599 | { | |
600 | char *mode = own_buf + strlen ("QAgent:"); | |
601 | int req = 0; | |
602 | ||
603 | if (strcmp (mode, "0") == 0) | |
604 | req = 0; | |
605 | else if (strcmp (mode, "1") == 0) | |
606 | req = 1; | |
607 | else | |
608 | { | |
609 | /* We don't know what this value is, so complain to GDB. */ | |
610 | sprintf (own_buf, "E.Unknown QAgent value"); | |
611 | return; | |
612 | } | |
613 | ||
614 | /* Update the flag. */ | |
615 | use_agent = req; | |
616 | if (remote_debug) | |
617 | fprintf (stderr, "[%s agent]\n", req ? "Enable" : "Disable"); | |
618 | write_ok (own_buf); | |
619 | return; | |
620 | } | |
621 | ||
9accd112 MM |
622 | if (handle_btrace_general_set (own_buf)) |
623 | return; | |
624 | ||
89be2091 DJ |
625 | /* Otherwise we didn't know what packet it was. Say we didn't |
626 | understand it. */ | |
627 | own_buf[0] = 0; | |
628 | } | |
629 | ||
23181151 | 630 | static const char * |
fb1e4ffc | 631 | get_features_xml (const char *annex) |
23181151 | 632 | { |
3aee8918 PA |
633 | const struct target_desc *desc = current_target_desc (); |
634 | ||
635 | /* `desc->xmltarget' defines what to return when looking for the | |
636 | "target.xml" file. Its contents can either be verbatim XML code | |
637 | (prefixed with a '@') or else the name of the actual XML file to | |
638 | be used in place of "target.xml". | |
fb1e4ffc | 639 | |
9b4b61c8 UW |
640 | This variable is set up from the auto-generated |
641 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 642 | |
3aee8918 | 643 | if (desc->xmltarget != NULL && strcmp (annex, "target.xml") == 0) |
23181151 | 644 | { |
3aee8918 PA |
645 | if (*desc->xmltarget == '@') |
646 | return desc->xmltarget + 1; | |
23181151 | 647 | else |
3aee8918 | 648 | annex = desc->xmltarget; |
23181151 DJ |
649 | } |
650 | ||
9b4b61c8 UW |
651 | #ifdef USE_XML |
652 | { | |
653 | extern const char *const xml_builtin[][2]; | |
654 | int i; | |
655 | ||
656 | /* Look for the annex. */ | |
657 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
658 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
659 | break; | |
660 | ||
661 | if (xml_builtin[i][0] != NULL) | |
662 | return xml_builtin[i][1]; | |
663 | } | |
664 | #endif | |
665 | ||
666 | return NULL; | |
23181151 DJ |
667 | } |
668 | ||
c74d0ad8 DJ |
669 | void |
670 | monitor_show_help (void) | |
671 | { | |
672 | monitor_output ("The following monitor commands are supported:\n"); | |
673 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 674 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
675 | monitor_output (" set debug-hw-points <0|1>\n"); |
676 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
677 | monitor_output (" set remote-debug <0|1>\n"); |
678 | monitor_output (" Enable remote protocol debugging messages\n"); | |
87ce2a04 DE |
679 | monitor_output (" set debug-format option1[,option2,...]\n"); |
680 | monitor_output (" Add additional information to debugging messages\n"); | |
681 | monitor_output (" Options: all, none"); | |
87ce2a04 | 682 | monitor_output (", timestamp"); |
87ce2a04 | 683 | monitor_output ("\n"); |
ecd7ecbc DJ |
684 | monitor_output (" exit\n"); |
685 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
686 | } |
687 | ||
764880b7 PA |
688 | /* Read trace frame or inferior memory. Returns the number of bytes |
689 | actually read, zero when no further transfer is possible, and -1 on | |
690 | error. Return of a positive value smaller than LEN does not | |
691 | indicate there's no more to be read, only the end of the transfer. | |
692 | E.g., when GDB reads memory from a traceframe, a first request may | |
693 | be served from a memory block that does not cover the whole request | |
694 | length. A following request gets the rest served from either | |
695 | another block (of the same traceframe) or from the read-only | |
696 | regions. */ | |
219f2f23 PA |
697 | |
698 | static int | |
90d74c30 | 699 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 700 | { |
764880b7 | 701 | int res; |
90d74c30 | 702 | |
219f2f23 PA |
703 | if (current_traceframe >= 0) |
704 | { | |
705 | ULONGEST nbytes; | |
706 | ULONGEST length = len; | |
707 | ||
708 | if (traceframe_read_mem (current_traceframe, | |
709 | memaddr, myaddr, len, &nbytes)) | |
9a13b2fa | 710 | return -1; |
219f2f23 | 711 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
712 | if (nbytes > 0) |
713 | return nbytes; | |
219f2f23 | 714 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 715 | return -1; |
219f2f23 PA |
716 | /* Otherwise we have a valid readonly case, fall through. */ |
717 | /* (assume no half-trace half-real blocks for now) */ | |
718 | } | |
719 | ||
764880b7 PA |
720 | res = prepare_to_access_memory (); |
721 | if (res == 0) | |
90d74c30 | 722 | { |
764880b7 | 723 | res = read_inferior_memory (memaddr, myaddr, len); |
0146f85b | 724 | done_accessing_memory (); |
90d74c30 | 725 | |
764880b7 PA |
726 | return res == 0 ? len : -1; |
727 | } | |
728 | else | |
729 | return -1; | |
219f2f23 PA |
730 | } |
731 | ||
732 | /* Write trace frame or inferior memory. Actually, writing to trace | |
733 | frames is forbidden. */ | |
734 | ||
735 | static int | |
90d74c30 | 736 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
737 | { |
738 | if (current_traceframe >= 0) | |
739 | return EIO; | |
740 | else | |
90d74c30 PA |
741 | { |
742 | int ret; | |
743 | ||
744 | ret = prepare_to_access_memory (); | |
745 | if (ret == 0) | |
746 | { | |
747 | ret = write_inferior_memory (memaddr, myaddr, len); | |
0146f85b | 748 | done_accessing_memory (); |
90d74c30 PA |
749 | } |
750 | return ret; | |
751 | } | |
219f2f23 PA |
752 | } |
753 | ||
08388c79 DE |
754 | /* Subroutine of handle_search_memory to simplify it. */ |
755 | ||
756 | static int | |
757 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
758 | gdb_byte *pattern, unsigned pattern_len, | |
759 | gdb_byte *search_buf, | |
760 | unsigned chunk_size, unsigned search_buf_size, | |
761 | CORE_ADDR *found_addrp) | |
762 | { | |
763 | /* Prime the search buffer. */ | |
764 | ||
764880b7 PA |
765 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
766 | != search_buf_size) | |
08388c79 | 767 | { |
b3dc46ff AB |
768 | warning ("Unable to access %ld bytes of target " |
769 | "memory at 0x%lx, halting search.", | |
770 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
771 | return -1; |
772 | } | |
773 | ||
774 | /* Perform the search. | |
775 | ||
776 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
777 | When we've scanned N bytes we copy the trailing bytes to the start and | |
778 | read in another N bytes. */ | |
779 | ||
780 | while (search_space_len >= pattern_len) | |
781 | { | |
782 | gdb_byte *found_ptr; | |
783 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
784 | ? search_space_len | |
785 | : search_buf_size); | |
786 | ||
787 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); | |
788 | ||
789 | if (found_ptr != NULL) | |
790 | { | |
791 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
792 | *found_addrp = found_addr; | |
793 | return 1; | |
794 | } | |
795 | ||
796 | /* Not found in this chunk, skip to next chunk. */ | |
797 | ||
798 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
799 | if (search_space_len >= chunk_size) | |
800 | search_space_len -= chunk_size; | |
801 | else | |
802 | search_space_len = 0; | |
803 | ||
804 | if (search_space_len >= pattern_len) | |
805 | { | |
806 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 807 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
808 | int nr_to_read; |
809 | ||
810 | /* Copy the trailing part of the previous iteration to the front | |
811 | of the buffer for the next iteration. */ | |
812 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
813 | ||
814 | nr_to_read = (search_space_len - keep_len < chunk_size | |
815 | ? search_space_len - keep_len | |
816 | : chunk_size); | |
817 | ||
90d74c30 | 818 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 819 | nr_to_read) != search_buf_size) |
08388c79 | 820 | { |
b3dc46ff | 821 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 822 | "at 0x%lx, halting search.", |
b3dc46ff | 823 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
824 | return -1; |
825 | } | |
826 | ||
827 | start_addr += chunk_size; | |
828 | } | |
829 | } | |
830 | ||
831 | /* Not found. */ | |
832 | ||
833 | return 0; | |
834 | } | |
835 | ||
836 | /* Handle qSearch:memory packets. */ | |
837 | ||
838 | static void | |
839 | handle_search_memory (char *own_buf, int packet_len) | |
840 | { | |
841 | CORE_ADDR start_addr; | |
842 | CORE_ADDR search_space_len; | |
843 | gdb_byte *pattern; | |
844 | unsigned int pattern_len; | |
845 | /* NOTE: also defined in find.c testcase. */ | |
846 | #define SEARCH_CHUNK_SIZE 16000 | |
847 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
848 | /* Buffer to hold memory contents for searching. */ | |
849 | gdb_byte *search_buf; | |
850 | unsigned search_buf_size; | |
851 | int found; | |
852 | CORE_ADDR found_addr; | |
853 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
854 | ||
aef93bd7 | 855 | pattern = malloc (packet_len); |
08388c79 DE |
856 | if (pattern == NULL) |
857 | { | |
5e1471f5 | 858 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
859 | strcpy (own_buf, "E00"); |
860 | return; | |
861 | } | |
862 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
863 | packet_len - cmd_name_len, | |
864 | &start_addr, &search_space_len, | |
865 | pattern, &pattern_len) < 0) | |
866 | { | |
867 | free (pattern); | |
5e1471f5 | 868 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
869 | strcpy (own_buf, "E00"); |
870 | return; | |
871 | } | |
872 | ||
873 | search_buf_size = chunk_size + pattern_len - 1; | |
874 | ||
875 | /* No point in trying to allocate a buffer larger than the search space. */ | |
876 | if (search_space_len < search_buf_size) | |
877 | search_buf_size = search_space_len; | |
878 | ||
aef93bd7 | 879 | search_buf = malloc (search_buf_size); |
08388c79 DE |
880 | if (search_buf == NULL) |
881 | { | |
882 | free (pattern); | |
5e1471f5 | 883 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
884 | strcpy (own_buf, "E00"); |
885 | return; | |
886 | } | |
887 | ||
888 | found = handle_search_memory_1 (start_addr, search_space_len, | |
889 | pattern, pattern_len, | |
890 | search_buf, chunk_size, search_buf_size, | |
891 | &found_addr); | |
892 | ||
893 | if (found > 0) | |
894 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
895 | else if (found == 0) | |
896 | strcpy (own_buf, "0"); | |
897 | else | |
898 | strcpy (own_buf, "E00"); | |
899 | ||
900 | free (search_buf); | |
901 | free (pattern); | |
902 | } | |
903 | ||
2d717e4f DJ |
904 | #define require_running(BUF) \ |
905 | if (!target_running ()) \ | |
906 | { \ | |
907 | write_enn (BUF); \ | |
908 | return; \ | |
909 | } | |
910 | ||
87ce2a04 DE |
911 | /* Parse options to --debug-format= and "monitor set debug-format". |
912 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
913 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
914 | This triggers calls to monitor_output. | |
915 | The result is NULL if all options were parsed ok, otherwise an error | |
916 | message which the caller must free. | |
917 | ||
918 | N.B. These commands affect all debug format settings, they are not | |
919 | cumulative. If a format is not specified, it is turned off. | |
920 | However, we don't go to extra trouble with things like | |
921 | "monitor set debug-format all,none,timestamp". | |
922 | Instead we just parse them one at a time, in order. | |
923 | ||
924 | The syntax for "monitor set debug" we support here is not identical | |
925 | to gdb's "set debug foo on|off" because we also use this function to | |
926 | parse "--debug-format=foo,bar". */ | |
927 | ||
928 | static char * | |
929 | parse_debug_format_options (const char *arg, int is_monitor) | |
930 | { | |
931 | VEC (char_ptr) *options; | |
932 | int ix; | |
933 | char *option; | |
934 | ||
935 | /* First turn all debug format options off. */ | |
936 | debug_timestamp = 0; | |
937 | ||
938 | /* First remove leading spaces, for "monitor set debug-format". */ | |
939 | while (isspace (*arg)) | |
940 | ++arg; | |
941 | ||
942 | options = delim_string_to_char_ptr_vec (arg, ','); | |
943 | ||
944 | for (ix = 0; VEC_iterate (char_ptr, options, ix, option); ++ix) | |
945 | { | |
946 | if (strcmp (option, "all") == 0) | |
947 | { | |
948 | debug_timestamp = 1; | |
949 | if (is_monitor) | |
950 | monitor_output ("All extra debug format options enabled.\n"); | |
951 | } | |
952 | else if (strcmp (option, "none") == 0) | |
953 | { | |
954 | debug_timestamp = 0; | |
955 | if (is_monitor) | |
956 | monitor_output ("All extra debug format options disabled.\n"); | |
957 | } | |
87ce2a04 DE |
958 | else if (strcmp (option, "timestamp") == 0) |
959 | { | |
960 | debug_timestamp = 1; | |
961 | if (is_monitor) | |
962 | monitor_output ("Timestamps will be added to debug output.\n"); | |
963 | } | |
87ce2a04 DE |
964 | else if (*option == '\0') |
965 | { | |
966 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
967 | continue; | |
968 | } | |
969 | else | |
970 | { | |
971 | char *msg = xstrprintf ("Unknown debug-format argument: \"%s\"\n", | |
972 | option); | |
973 | ||
974 | free_char_ptr_vec (options); | |
975 | return msg; | |
976 | } | |
977 | } | |
978 | ||
979 | free_char_ptr_vec (options); | |
980 | return NULL; | |
981 | } | |
982 | ||
cdbfd419 PP |
983 | /* Handle monitor commands not handled by target-specific handlers. */ |
984 | ||
985 | static void | |
d73f2619 | 986 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
987 | { |
988 | if (strcmp (mon, "set debug 1") == 0) | |
989 | { | |
990 | debug_threads = 1; | |
991 | monitor_output ("Debug output enabled.\n"); | |
992 | } | |
993 | else if (strcmp (mon, "set debug 0") == 0) | |
994 | { | |
995 | debug_threads = 0; | |
996 | monitor_output ("Debug output disabled.\n"); | |
997 | } | |
998 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
999 | { | |
c5e92cca | 1000 | show_debug_regs = 1; |
cdbfd419 PP |
1001 | monitor_output ("H/W point debugging output enabled.\n"); |
1002 | } | |
1003 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1004 | { | |
c5e92cca | 1005 | show_debug_regs = 0; |
cdbfd419 PP |
1006 | monitor_output ("H/W point debugging output disabled.\n"); |
1007 | } | |
1008 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1009 | { | |
1010 | remote_debug = 1; | |
1011 | monitor_output ("Protocol debug output enabled.\n"); | |
1012 | } | |
1013 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1014 | { | |
1015 | remote_debug = 0; | |
1016 | monitor_output ("Protocol debug output disabled.\n"); | |
1017 | } | |
87ce2a04 DE |
1018 | else if (strncmp (mon, "set debug-format ", |
1019 | sizeof ("set debug-format ") - 1) == 0) | |
1020 | { | |
1021 | char *error_msg | |
1022 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, | |
1023 | 1); | |
1024 | ||
1025 | if (error_msg != NULL) | |
1026 | { | |
1027 | monitor_output (error_msg); | |
1028 | monitor_show_help (); | |
1029 | write_enn (own_buf); | |
1030 | xfree (error_msg); | |
1031 | } | |
1032 | } | |
cdbfd419 PP |
1033 | else if (strcmp (mon, "help") == 0) |
1034 | monitor_show_help (); | |
1035 | else if (strcmp (mon, "exit") == 0) | |
1036 | exit_requested = 1; | |
1037 | else | |
1038 | { | |
1039 | monitor_output ("Unknown monitor command.\n\n"); | |
1040 | monitor_show_help (); | |
1041 | write_enn (own_buf); | |
1042 | } | |
1043 | } | |
1044 | ||
d08aafef PA |
1045 | /* Associates a callback with each supported qXfer'able object. */ |
1046 | ||
1047 | struct qxfer | |
1048 | { | |
1049 | /* The object this handler handles. */ | |
1050 | const char *object; | |
1051 | ||
1052 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1053 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1054 | the starting point. The ANNEX can be used to provide additional | |
1055 | data-specific information to the target. | |
1056 | ||
1057 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1058 | further transfer is possible, -1 on error, -2 when the transfer |
1059 | is not supported, and -3 on a verbose error message that should | |
1060 | be preserved. Return of a positive value smaller than LEN does | |
1061 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1062 | |
1063 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1064 | int (*xfer) (const char *annex, | |
1065 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1066 | ULONGEST offset, LONGEST len); | |
1067 | }; | |
1068 | ||
1069 | /* Handle qXfer:auxv:read. */ | |
1070 | ||
1071 | static int | |
1072 | handle_qxfer_auxv (const char *annex, | |
1073 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1074 | ULONGEST offset, LONGEST len) | |
1075 | { | |
1076 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1077 | return -2; | |
1078 | ||
1079 | if (annex[0] != '\0' || !target_running ()) | |
1080 | return -1; | |
1081 | ||
1082 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1083 | } | |
1084 | ||
1085 | /* Handle qXfer:features:read. */ | |
1086 | ||
1087 | static int | |
1088 | handle_qxfer_features (const char *annex, | |
1089 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1090 | ULONGEST offset, LONGEST len) | |
1091 | { | |
1092 | const char *document; | |
1093 | size_t total_len; | |
1094 | ||
1095 | if (writebuf != NULL) | |
1096 | return -2; | |
1097 | ||
1098 | if (!target_running ()) | |
1099 | return -1; | |
1100 | ||
1101 | /* Grab the correct annex. */ | |
1102 | document = get_features_xml (annex); | |
1103 | if (document == NULL) | |
1104 | return -1; | |
1105 | ||
1106 | total_len = strlen (document); | |
1107 | ||
1108 | if (offset > total_len) | |
1109 | return -1; | |
1110 | ||
1111 | if (offset + len > total_len) | |
1112 | len = total_len - offset; | |
1113 | ||
1114 | memcpy (readbuf, document + offset, len); | |
1115 | return len; | |
1116 | } | |
1117 | ||
649ebbca DE |
1118 | /* Worker routine for handle_qxfer_libraries. |
1119 | Add to the length pointed to by ARG a conservative estimate of the | |
1120 | length needed to transmit the file name of INF. */ | |
1121 | ||
1122 | static void | |
1123 | accumulate_file_name_length (struct inferior_list_entry *inf, void *arg) | |
1124 | { | |
1125 | struct dll_info *dll = (struct dll_info *) inf; | |
1126 | unsigned int *total_len = arg; | |
1127 | ||
1128 | /* Over-estimate the necessary memory. Assume that every character | |
1129 | in the library name must be escaped. */ | |
1130 | *total_len += 128 + 6 * strlen (dll->name); | |
1131 | } | |
1132 | ||
1133 | /* Worker routine for handle_qxfer_libraries. | |
1134 | Emit the XML to describe the library in INF. */ | |
1135 | ||
1136 | static void | |
1137 | emit_dll_description (struct inferior_list_entry *inf, void *arg) | |
1138 | { | |
1139 | struct dll_info *dll = (struct dll_info *) inf; | |
1140 | char **p_ptr = arg; | |
1141 | char *p = *p_ptr; | |
1142 | char *name; | |
1143 | ||
1144 | strcpy (p, " <library name=\""); | |
1145 | p = p + strlen (p); | |
1146 | name = xml_escape_text (dll->name); | |
1147 | strcpy (p, name); | |
1148 | free (name); | |
1149 | p = p + strlen (p); | |
1150 | strcpy (p, "\"><segment address=\""); | |
1151 | p = p + strlen (p); | |
1152 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1153 | p = p + strlen (p); | |
1154 | strcpy (p, "\"/></library>\n"); | |
1155 | p = p + strlen (p); | |
1156 | ||
1157 | *p_ptr = p; | |
1158 | } | |
1159 | ||
d08aafef PA |
1160 | /* Handle qXfer:libraries:read. */ |
1161 | ||
1162 | static int | |
1163 | handle_qxfer_libraries (const char *annex, | |
1164 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1165 | ULONGEST offset, LONGEST len) | |
1166 | { | |
1167 | unsigned int total_len; | |
1168 | char *document, *p; | |
d08aafef PA |
1169 | |
1170 | if (writebuf != NULL) | |
1171 | return -2; | |
1172 | ||
1173 | if (annex[0] != '\0' || !target_running ()) | |
1174 | return -1; | |
1175 | ||
d08aafef | 1176 | total_len = 64; |
649ebbca DE |
1177 | for_each_inferior_with_data (&all_dlls, accumulate_file_name_length, |
1178 | &total_len); | |
d08aafef PA |
1179 | |
1180 | document = malloc (total_len); | |
1181 | if (document == NULL) | |
1182 | return -1; | |
1183 | ||
1184 | strcpy (document, "<library-list>\n"); | |
1185 | p = document + strlen (document); | |
1186 | ||
649ebbca | 1187 | for_each_inferior_with_data (&all_dlls, emit_dll_description, &p); |
d08aafef PA |
1188 | |
1189 | strcpy (p, "</library-list>\n"); | |
1190 | ||
1191 | total_len = strlen (document); | |
1192 | ||
1193 | if (offset > total_len) | |
1194 | { | |
1195 | free (document); | |
1196 | return -1; | |
1197 | } | |
1198 | ||
1199 | if (offset + len > total_len) | |
1200 | len = total_len - offset; | |
1201 | ||
1202 | memcpy (readbuf, document + offset, len); | |
1203 | free (document); | |
1204 | return len; | |
1205 | } | |
1206 | ||
2268b414 JK |
1207 | /* Handle qXfer:libraries-svr4:read. */ |
1208 | ||
1209 | static int | |
1210 | handle_qxfer_libraries_svr4 (const char *annex, | |
1211 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1212 | ULONGEST offset, LONGEST len) | |
1213 | { | |
1214 | if (writebuf != NULL) | |
1215 | return -2; | |
1216 | ||
b1fbec62 | 1217 | if (!target_running () || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1218 | return -1; |
1219 | ||
1220 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1221 | } | |
1222 | ||
d08aafef PA |
1223 | /* Handle qXfer:osadata:read. */ |
1224 | ||
1225 | static int | |
1226 | handle_qxfer_osdata (const char *annex, | |
1227 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1228 | ULONGEST offset, LONGEST len) | |
1229 | { | |
1230 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1231 | return -2; | |
1232 | ||
1233 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1234 | } | |
1235 | ||
1236 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1237 | ||
1238 | static int | |
1239 | handle_qxfer_siginfo (const char *annex, | |
1240 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1241 | ULONGEST offset, LONGEST len) | |
1242 | { | |
1243 | if (the_target->qxfer_siginfo == NULL) | |
1244 | return -2; | |
1245 | ||
1246 | if (annex[0] != '\0' || !target_running ()) | |
1247 | return -1; | |
1248 | ||
1249 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1250 | } | |
1251 | ||
1252 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1253 | ||
1254 | static int | |
1255 | handle_qxfer_spu (const char *annex, | |
1256 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1257 | ULONGEST offset, LONGEST len) | |
1258 | { | |
1259 | if (the_target->qxfer_spu == NULL) | |
1260 | return -2; | |
1261 | ||
1262 | if (!target_running ()) | |
1263 | return -1; | |
1264 | ||
1265 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1266 | } | |
1267 | ||
1268 | /* Handle qXfer:statictrace:read. */ | |
1269 | ||
1270 | static int | |
1271 | handle_qxfer_statictrace (const char *annex, | |
1272 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1273 | ULONGEST offset, LONGEST len) | |
1274 | { | |
1275 | ULONGEST nbytes; | |
1276 | ||
1277 | if (writebuf != NULL) | |
1278 | return -2; | |
1279 | ||
1280 | if (annex[0] != '\0' || !target_running () || current_traceframe == -1) | |
1281 | return -1; | |
1282 | ||
1283 | if (traceframe_read_sdata (current_traceframe, offset, | |
1284 | readbuf, len, &nbytes)) | |
1285 | return -1; | |
1286 | return nbytes; | |
1287 | } | |
1288 | ||
649ebbca DE |
1289 | /* Helper for handle_qxfer_threads_proper. |
1290 | Emit the XML to describe the thread of INF. */ | |
d08aafef | 1291 | |
dc146f7c | 1292 | static void |
649ebbca | 1293 | handle_qxfer_threads_worker (struct inferior_list_entry *inf, void *arg) |
dc146f7c | 1294 | { |
649ebbca DE |
1295 | struct thread_info *thread = (struct thread_info *) inf; |
1296 | struct buffer *buffer = arg; | |
1297 | ptid_t ptid = thread_to_gdb_id (thread); | |
1298 | char ptid_s[100]; | |
1299 | int core = target_core_of_thread (ptid); | |
1300 | char core_s[21]; | |
dc146f7c | 1301 | |
649ebbca | 1302 | write_ptid (ptid_s, ptid); |
dc146f7c | 1303 | |
649ebbca | 1304 | if (core != -1) |
dc146f7c | 1305 | { |
649ebbca DE |
1306 | sprintf (core_s, "%d", core); |
1307 | buffer_xml_printf (buffer, "<thread id=\"%s\" core=\"%s\"/>\n", | |
1308 | ptid_s, core_s); | |
1309 | } | |
1310 | else | |
1311 | { | |
1312 | buffer_xml_printf (buffer, "<thread id=\"%s\"/>\n", | |
1313 | ptid_s); | |
1314 | } | |
1315 | } | |
dc146f7c | 1316 | |
649ebbca | 1317 | /* Helper for handle_qxfer_threads. */ |
dc146f7c | 1318 | |
649ebbca DE |
1319 | static void |
1320 | handle_qxfer_threads_proper (struct buffer *buffer) | |
1321 | { | |
1322 | buffer_grow_str (buffer, "<threads>\n"); | |
1323 | ||
1324 | for_each_inferior_with_data (&all_threads, handle_qxfer_threads_worker, | |
1325 | buffer); | |
dc146f7c VP |
1326 | |
1327 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1328 | } | |
1329 | ||
d08aafef PA |
1330 | /* Handle qXfer:threads:read. */ |
1331 | ||
dc146f7c | 1332 | static int |
d08aafef PA |
1333 | handle_qxfer_threads (const char *annex, |
1334 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1335 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1336 | { |
1337 | static char *result = 0; | |
1338 | static unsigned int result_length = 0; | |
1339 | ||
d08aafef PA |
1340 | if (writebuf != NULL) |
1341 | return -2; | |
1342 | ||
1343 | if (!target_running () || annex[0] != '\0') | |
1344 | return -1; | |
dc146f7c VP |
1345 | |
1346 | if (offset == 0) | |
1347 | { | |
1348 | struct buffer buffer; | |
1349 | /* When asked for data at offset 0, generate everything and store into | |
1350 | 'result'. Successive reads will be served off 'result'. */ | |
1351 | if (result) | |
1352 | free (result); | |
1353 | ||
1354 | buffer_init (&buffer); | |
1355 | ||
d08aafef | 1356 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1357 | |
1358 | result = buffer_finish (&buffer); | |
1359 | result_length = strlen (result); | |
1360 | buffer_free (&buffer); | |
1361 | } | |
1362 | ||
1363 | if (offset >= result_length) | |
1364 | { | |
1365 | /* We're out of data. */ | |
1366 | free (result); | |
1367 | result = NULL; | |
1368 | result_length = 0; | |
1369 | return 0; | |
1370 | } | |
1371 | ||
d08aafef PA |
1372 | if (len > result_length - offset) |
1373 | len = result_length - offset; | |
1374 | ||
1375 | memcpy (readbuf, result + offset, len); | |
1376 | ||
1377 | return len; | |
1378 | } | |
1379 | ||
b3b9301e PA |
1380 | /* Handle qXfer:traceframe-info:read. */ |
1381 | ||
1382 | static int | |
1383 | handle_qxfer_traceframe_info (const char *annex, | |
1384 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1385 | ULONGEST offset, LONGEST len) | |
1386 | { | |
1387 | static char *result = 0; | |
1388 | static unsigned int result_length = 0; | |
1389 | ||
1390 | if (writebuf != NULL) | |
1391 | return -2; | |
1392 | ||
1393 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1394 | return -1; | |
1395 | ||
1396 | if (offset == 0) | |
1397 | { | |
1398 | struct buffer buffer; | |
1399 | ||
1400 | /* When asked for data at offset 0, generate everything and | |
1401 | store into 'result'. Successive reads will be served off | |
1402 | 'result'. */ | |
1403 | free (result); | |
1404 | ||
1405 | buffer_init (&buffer); | |
1406 | ||
1407 | traceframe_read_info (current_traceframe, &buffer); | |
1408 | ||
1409 | result = buffer_finish (&buffer); | |
1410 | result_length = strlen (result); | |
1411 | buffer_free (&buffer); | |
1412 | } | |
1413 | ||
1414 | if (offset >= result_length) | |
1415 | { | |
1416 | /* We're out of data. */ | |
1417 | free (result); | |
1418 | result = NULL; | |
1419 | result_length = 0; | |
1420 | return 0; | |
1421 | } | |
1422 | ||
1423 | if (len > result_length - offset) | |
1424 | len = result_length - offset; | |
1425 | ||
1426 | memcpy (readbuf, result + offset, len); | |
1427 | return len; | |
1428 | } | |
1429 | ||
78d85199 YQ |
1430 | /* Handle qXfer:fdpic:read. */ |
1431 | ||
1432 | static int | |
1433 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1434 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1435 | { | |
1436 | if (the_target->read_loadmap == NULL) | |
1437 | return -2; | |
1438 | ||
1439 | if (!target_running ()) | |
1440 | return -1; | |
1441 | ||
1442 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1443 | } | |
1444 | ||
9accd112 MM |
1445 | /* Handle qXfer:btrace:read. */ |
1446 | ||
1447 | static int | |
1448 | handle_qxfer_btrace (const char *annex, | |
1449 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1450 | ULONGEST offset, LONGEST len) | |
1451 | { | |
1452 | static struct buffer cache; | |
1453 | struct thread_info *thread; | |
969c39fb | 1454 | int type, result; |
9accd112 MM |
1455 | |
1456 | if (the_target->read_btrace == NULL || writebuf != NULL) | |
1457 | return -2; | |
1458 | ||
1459 | if (!target_running ()) | |
1460 | return -1; | |
1461 | ||
1462 | if (ptid_equal (general_thread, null_ptid) | |
1463 | || ptid_equal (general_thread, minus_one_ptid)) | |
1464 | { | |
1465 | strcpy (own_buf, "E.Must select a single thread."); | |
1466 | return -3; | |
1467 | } | |
1468 | ||
1469 | thread = find_thread_ptid (general_thread); | |
1470 | if (thread == NULL) | |
1471 | { | |
1472 | strcpy (own_buf, "E.No such thread."); | |
1473 | return -3; | |
1474 | } | |
1475 | ||
1476 | if (thread->btrace == NULL) | |
1477 | { | |
1478 | strcpy (own_buf, "E.Btrace not enabled."); | |
1479 | return -3; | |
1480 | } | |
1481 | ||
1482 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1483 | type = BTRACE_READ_ALL; |
9accd112 | 1484 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1485 | type = BTRACE_READ_NEW; |
969c39fb MM |
1486 | else if (strcmp (annex, "delta") == 0) |
1487 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1488 | else |
1489 | { | |
1490 | strcpy (own_buf, "E.Bad annex."); | |
1491 | return -3; | |
1492 | } | |
1493 | ||
1494 | if (offset == 0) | |
1495 | { | |
1496 | buffer_free (&cache); | |
1497 | ||
969c39fb MM |
1498 | result = target_read_btrace (thread->btrace, &cache, type); |
1499 | if (result != 0) | |
1500 | { | |
1501 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1502 | return -3; | |
1503 | } | |
9accd112 MM |
1504 | } |
1505 | else if (offset > cache.used_size) | |
1506 | { | |
1507 | buffer_free (&cache); | |
1508 | return -3; | |
1509 | } | |
1510 | ||
1511 | if (len > cache.used_size - offset) | |
1512 | len = cache.used_size - offset; | |
1513 | ||
1514 | memcpy (readbuf, cache.buffer + offset, len); | |
1515 | ||
1516 | return len; | |
1517 | } | |
1518 | ||
d08aafef PA |
1519 | static const struct qxfer qxfer_packets[] = |
1520 | { | |
1521 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1522 | { "btrace", handle_qxfer_btrace }, |
78d85199 | 1523 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1524 | { "features", handle_qxfer_features }, |
1525 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1526 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1527 | { "osdata", handle_qxfer_osdata }, |
1528 | { "siginfo", handle_qxfer_siginfo }, | |
1529 | { "spu", handle_qxfer_spu }, | |
1530 | { "statictrace", handle_qxfer_statictrace }, | |
1531 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1532 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1533 | }; |
1534 | ||
1535 | static int | |
1536 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1537 | { | |
1538 | int i; | |
1539 | char *object; | |
1540 | char *rw; | |
1541 | char *annex; | |
1542 | char *offset; | |
1543 | ||
1544 | if (strncmp (own_buf, "qXfer:", 6) != 0) | |
1545 | return 0; | |
1546 | ||
1547 | /* Grab the object, r/w and annex. */ | |
1548 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1549 | { | |
1550 | write_enn (own_buf); | |
1551 | return 1; | |
1552 | } | |
1553 | ||
1554 | for (i = 0; | |
1555 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1556 | i++) | |
1557 | { | |
1558 | const struct qxfer *q = &qxfer_packets[i]; | |
1559 | ||
1560 | if (strcmp (object, q->object) == 0) | |
1561 | { | |
1562 | if (strcmp (rw, "read") == 0) | |
1563 | { | |
1564 | unsigned char *data; | |
1565 | int n; | |
1566 | CORE_ADDR ofs; | |
1567 | unsigned int len; | |
1568 | ||
1569 | /* Grab the offset and length. */ | |
1570 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
1571 | { | |
1572 | write_enn (own_buf); | |
1573 | return 1; | |
1574 | } | |
1575 | ||
1576 | /* Read one extra byte, as an indicator of whether there is | |
1577 | more. */ | |
1578 | if (len > PBUFSIZ - 2) | |
1579 | len = PBUFSIZ - 2; | |
1580 | data = malloc (len + 1); | |
1581 | if (data == NULL) | |
1582 | { | |
1583 | write_enn (own_buf); | |
1584 | return 1; | |
1585 | } | |
1586 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
1587 | if (n == -2) | |
1588 | { | |
1589 | free (data); | |
1590 | return 0; | |
1591 | } | |
5cc22e4c MM |
1592 | else if (n == -3) |
1593 | { | |
1594 | /* Preserve error message. */ | |
1595 | } | |
d08aafef PA |
1596 | else if (n < 0) |
1597 | write_enn (own_buf); | |
1598 | else if (n > len) | |
1599 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1600 | else | |
1601 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1602 | ||
1603 | free (data); | |
1604 | return 1; | |
1605 | } | |
1606 | else if (strcmp (rw, "write") == 0) | |
1607 | { | |
1608 | int n; | |
1609 | unsigned int len; | |
1610 | CORE_ADDR ofs; | |
1611 | unsigned char *data; | |
1612 | ||
1613 | strcpy (own_buf, "E00"); | |
1614 | data = malloc (packet_len - (offset - own_buf)); | |
1615 | if (data == NULL) | |
1616 | { | |
1617 | write_enn (own_buf); | |
1618 | return 1; | |
1619 | } | |
1620 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
1621 | &ofs, &len, data) < 0) | |
1622 | { | |
1623 | free (data); | |
1624 | write_enn (own_buf); | |
1625 | return 1; | |
1626 | } | |
1627 | ||
1628 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
1629 | if (n == -2) | |
1630 | { | |
1631 | free (data); | |
1632 | return 0; | |
1633 | } | |
5cc22e4c MM |
1634 | else if (n == -3) |
1635 | { | |
1636 | /* Preserve error message. */ | |
1637 | } | |
d08aafef PA |
1638 | else if (n < 0) |
1639 | write_enn (own_buf); | |
1640 | else | |
1641 | sprintf (own_buf, "%x", n); | |
dc146f7c | 1642 | |
d08aafef PA |
1643 | free (data); |
1644 | return 1; | |
1645 | } | |
dc146f7c | 1646 | |
d08aafef PA |
1647 | return 0; |
1648 | } | |
1649 | } | |
dc146f7c | 1650 | |
d08aafef | 1651 | return 0; |
dc146f7c VP |
1652 | } |
1653 | ||
30ba68cb MS |
1654 | /* Table used by the crc32 function to calcuate the checksum. */ |
1655 | ||
1656 | static unsigned int crc32_table[256] = | |
1657 | {0, 0}; | |
1658 | ||
1659 | /* Compute 32 bit CRC from inferior memory. | |
1660 | ||
1661 | On success, return 32 bit CRC. | |
1662 | On failure, return (unsigned long long) -1. */ | |
1663 | ||
1664 | static unsigned long long | |
1665 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
1666 | { | |
1667 | if (!crc32_table[1]) | |
1668 | { | |
1669 | /* Initialize the CRC table and the decoding table. */ | |
1670 | int i, j; | |
1671 | unsigned int c; | |
1672 | ||
1673 | for (i = 0; i < 256; i++) | |
1674 | { | |
1675 | for (c = i << 24, j = 8; j > 0; --j) | |
1676 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
1677 | crc32_table[i] = c; | |
1678 | } | |
1679 | } | |
1680 | ||
1681 | while (len--) | |
1682 | { | |
1683 | unsigned char byte = 0; | |
1684 | ||
1685 | /* Return failure if memory read fails. */ | |
1686 | if (read_inferior_memory (base, &byte, 1) != 0) | |
1687 | return (unsigned long long) -1; | |
1688 | ||
1689 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ byte) & 255]; | |
1690 | base++; | |
1691 | } | |
1692 | return (unsigned long long) crc; | |
1693 | } | |
1694 | ||
ce3a066d | 1695 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 1696 | |
ce3a066d | 1697 | void |
0e7f50da | 1698 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 1699 | { |
0d62e5e8 DJ |
1700 | static struct inferior_list_entry *thread_ptr; |
1701 | ||
bb63802a | 1702 | /* Reply the current thread id. */ |
db42f210 | 1703 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 1704 | { |
95954743 | 1705 | ptid_t gdb_id; |
2d717e4f | 1706 | require_running (own_buf); |
bd99dc85 | 1707 | |
95954743 PA |
1708 | if (!ptid_equal (general_thread, null_ptid) |
1709 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
1710 | gdb_id = general_thread; |
1711 | else | |
1712 | { | |
649ebbca | 1713 | thread_ptr = get_first_inferior (&all_threads); |
bd99dc85 PA |
1714 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); |
1715 | } | |
1716 | ||
95954743 PA |
1717 | sprintf (own_buf, "QC"); |
1718 | own_buf += 2; | |
4b812f4e | 1719 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
1720 | return; |
1721 | } | |
1722 | ||
ce3a066d DJ |
1723 | if (strcmp ("qSymbol::", own_buf) == 0) |
1724 | { | |
d3bbe7a0 PA |
1725 | /* GDB is suggesting new symbols have been loaded. This may |
1726 | mean a new shared library has been detected as loaded, so | |
1727 | take the opportunity to check if breakpoints we think are | |
1728 | inserted, still are. Note that it isn't guaranteed that | |
1729 | we'll see this when a shared library is loaded, and nor will | |
1730 | we see this for unloads (although breakpoints in unloaded | |
1731 | libraries shouldn't trigger), as GDB may not find symbols for | |
1732 | the library at all. We also re-validate breakpoints when we | |
1733 | see a second GDB breakpoint for the same address, and or when | |
1734 | we access breakpoint shadows. */ | |
1735 | validate_breakpoints (); | |
1736 | ||
fa593d66 PA |
1737 | if (target_supports_tracepoints ()) |
1738 | tracepoint_look_up_symbols (); | |
1739 | ||
2d717e4f | 1740 | if (target_running () && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
1741 | (*the_target->look_up_symbols) (); |
1742 | ||
ce3a066d DJ |
1743 | strcpy (own_buf, "OK"); |
1744 | return; | |
1745 | } | |
1746 | ||
db42f210 | 1747 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 1748 | { |
db42f210 | 1749 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 1750 | { |
95954743 PA |
1751 | ptid_t gdb_id; |
1752 | ||
db42f210 | 1753 | require_running (own_buf); |
649ebbca | 1754 | thread_ptr = get_first_inferior (&all_threads); |
95954743 PA |
1755 | |
1756 | *own_buf++ = 'm'; | |
1757 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1758 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
1759 | thread_ptr = thread_ptr->next; |
1760 | return; | |
1761 | } | |
db42f210 PA |
1762 | |
1763 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 1764 | { |
95954743 PA |
1765 | ptid_t gdb_id; |
1766 | ||
db42f210 PA |
1767 | require_running (own_buf); |
1768 | if (thread_ptr != NULL) | |
1769 | { | |
95954743 PA |
1770 | *own_buf++ = 'm'; |
1771 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1772 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
1773 | thread_ptr = thread_ptr->next; |
1774 | return; | |
1775 | } | |
1776 | else | |
1777 | { | |
1778 | sprintf (own_buf, "l"); | |
1779 | return; | |
1780 | } | |
0d62e5e8 DJ |
1781 | } |
1782 | } | |
aa691b87 | 1783 | |
52fb6437 NS |
1784 | if (the_target->read_offsets != NULL |
1785 | && strcmp ("qOffsets", own_buf) == 0) | |
1786 | { | |
1787 | CORE_ADDR text, data; | |
2d717e4f DJ |
1788 | |
1789 | require_running (own_buf); | |
52fb6437 NS |
1790 | if (the_target->read_offsets (&text, &data)) |
1791 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
1792 | (long)text, (long)data, (long)data); | |
1793 | else | |
1794 | write_enn (own_buf); | |
1b3f6016 | 1795 | |
52fb6437 NS |
1796 | return; |
1797 | } | |
1798 | ||
be2a5f71 DJ |
1799 | /* Protocol features query. */ |
1800 | if (strncmp ("qSupported", own_buf, 10) == 0 | |
1801 | && (own_buf[10] == ':' || own_buf[10] == '\0')) | |
1802 | { | |
95954743 | 1803 | char *p = &own_buf[10]; |
fa593d66 | 1804 | int gdb_supports_qRelocInsn = 0; |
95954743 | 1805 | |
1570b33e L |
1806 | /* Start processing qSupported packet. */ |
1807 | target_process_qsupported (NULL); | |
1808 | ||
95954743 PA |
1809 | /* Process each feature being provided by GDB. The first |
1810 | feature will follow a ':', and latter features will follow | |
1811 | ';'. */ | |
1812 | if (*p == ':') | |
d149dd1d PA |
1813 | { |
1814 | char **qsupported = NULL; | |
1815 | int count = 0; | |
1816 | int i; | |
1817 | ||
1818 | /* Two passes, to avoid nested strtok calls in | |
1819 | target_process_qsupported. */ | |
1820 | for (p = strtok (p + 1, ";"); | |
1821 | p != NULL; | |
1822 | p = strtok (NULL, ";")) | |
1823 | { | |
1824 | count++; | |
1825 | qsupported = xrealloc (qsupported, count * sizeof (char *)); | |
1826 | qsupported[count - 1] = xstrdup (p); | |
1827 | } | |
1828 | ||
1829 | for (i = 0; i < count; i++) | |
1830 | { | |
1831 | p = qsupported[i]; | |
1832 | if (strcmp (p, "multiprocess+") == 0) | |
1833 | { | |
1834 | /* GDB supports and wants multi-process support if | |
1835 | possible. */ | |
1836 | if (target_supports_multi_process ()) | |
1837 | multi_process = 1; | |
1838 | } | |
fa593d66 PA |
1839 | else if (strcmp (p, "qRelocInsn+") == 0) |
1840 | { | |
1841 | /* GDB supports relocate instruction requests. */ | |
1842 | gdb_supports_qRelocInsn = 1; | |
1843 | } | |
d149dd1d PA |
1844 | else |
1845 | target_process_qsupported (p); | |
1846 | ||
1847 | free (p); | |
1848 | } | |
1849 | ||
1850 | free (qsupported); | |
1851 | } | |
95954743 | 1852 | |
9b224c5e PA |
1853 | sprintf (own_buf, |
1854 | "PacketSize=%x;QPassSignals+;QProgramSignals+", | |
1855 | PBUFSIZ - 1); | |
0876f84a | 1856 | |
2268b414 | 1857 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
1858 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
1859 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
1860 | else |
1861 | { | |
1862 | /* We do not have any hook to indicate whether the non-SVR4 target | |
1863 | backend supports qXfer:libraries:read, so always report it. */ | |
1864 | strcat (own_buf, ";qXfer:libraries:read+"); | |
1865 | } | |
255e7678 | 1866 | |
0876f84a | 1867 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 1868 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 1869 | |
0e7f50da UW |
1870 | if (the_target->qxfer_spu != NULL) |
1871 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 1872 | |
4aa995e1 PA |
1873 | if (the_target->qxfer_siginfo != NULL) |
1874 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
1875 | ||
78d85199 YQ |
1876 | if (the_target->read_loadmap != NULL) |
1877 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
1878 | ||
221c031f UW |
1879 | /* We always report qXfer:features:read, as targets may |
1880 | install XML files on a subsequent call to arch_setup. | |
1881 | If we reported to GDB on startup that we don't support | |
1882 | qXfer:feature:read at all, we will never be re-queried. */ | |
1883 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 1884 | |
a6f3e723 SL |
1885 | if (transport_is_reliable) |
1886 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
1887 | |
1888 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 1889 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 1890 | |
cf8fd78b PA |
1891 | if (target_supports_multi_process ()) |
1892 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 1893 | |
bd99dc85 PA |
1894 | if (target_supports_non_stop ()) |
1895 | strcat (own_buf, ";QNonStop+"); | |
1896 | ||
03583c20 UW |
1897 | if (target_supports_disable_randomization ()) |
1898 | strcat (own_buf, ";QDisableRandomization+"); | |
1899 | ||
dc146f7c VP |
1900 | strcat (own_buf, ";qXfer:threads:read+"); |
1901 | ||
219f2f23 PA |
1902 | if (target_supports_tracepoints ()) |
1903 | { | |
1904 | strcat (own_buf, ";ConditionalTracepoints+"); | |
1905 | strcat (own_buf, ";TraceStateVariables+"); | |
1906 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 1907 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
1908 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
1909 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 1910 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 1911 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 1912 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 1913 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 1914 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 1915 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 1916 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
1917 | } |
1918 | ||
d3ce09f5 | 1919 | /* Support target-side breakpoint conditions and commands. */ |
9f3a5c85 | 1920 | strcat (own_buf, ";ConditionalBreakpoints+"); |
d3ce09f5 | 1921 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 1922 | |
d1feda86 YQ |
1923 | if (target_supports_agent ()) |
1924 | strcat (own_buf, ";QAgent+"); | |
1925 | ||
9accd112 MM |
1926 | if (target_supports_btrace ()) |
1927 | { | |
1928 | strcat (own_buf, ";Qbtrace:bts+"); | |
1929 | strcat (own_buf, ";Qbtrace:off+"); | |
1930 | strcat (own_buf, ";qXfer:btrace:read+"); | |
1931 | } | |
1932 | ||
be2a5f71 DJ |
1933 | return; |
1934 | } | |
1935 | ||
dae5f5cf DJ |
1936 | /* Thread-local storage support. */ |
1937 | if (the_target->get_tls_address != NULL | |
1938 | && strncmp ("qGetTLSAddr:", own_buf, 12) == 0) | |
1939 | { | |
1940 | char *p = own_buf + 12; | |
5b1c542e | 1941 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 1942 | int i, err; |
95954743 | 1943 | ptid_t ptid = null_ptid; |
dae5f5cf | 1944 | |
2d717e4f DJ |
1945 | require_running (own_buf); |
1946 | ||
dae5f5cf DJ |
1947 | for (i = 0; i < 3; i++) |
1948 | { | |
1949 | char *p2; | |
1950 | int len; | |
1951 | ||
1952 | if (p == NULL) | |
1953 | break; | |
1954 | ||
1955 | p2 = strchr (p, ','); | |
1956 | if (p2) | |
1957 | { | |
1958 | len = p2 - p; | |
1959 | p2++; | |
1960 | } | |
1961 | else | |
1962 | { | |
1963 | len = strlen (p); | |
1964 | p2 = NULL; | |
1965 | } | |
1966 | ||
5b1c542e | 1967 | if (i == 0) |
95954743 | 1968 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
1969 | else |
1970 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
1971 | p = p2; |
1972 | } | |
1973 | ||
1974 | if (p != NULL || i < 3) | |
1975 | err = 1; | |
1976 | else | |
1977 | { | |
e09875d4 | 1978 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
1979 | |
1980 | if (thread == NULL) | |
1981 | err = 2; | |
1982 | else | |
5b1c542e | 1983 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
1984 | &address); |
1985 | } | |
1986 | ||
1987 | if (err == 0) | |
1988 | { | |
c6f46ca0 | 1989 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
1990 | return; |
1991 | } | |
1992 | else if (err > 0) | |
1993 | { | |
1994 | write_enn (own_buf); | |
1995 | return; | |
1996 | } | |
1997 | ||
1998 | /* Otherwise, pretend we do not understand this packet. */ | |
1999 | } | |
2000 | ||
711e434b PM |
2001 | /* Windows OS Thread Information Block address support. */ |
2002 | if (the_target->get_tib_address != NULL | |
2003 | && strncmp ("qGetTIBAddr:", own_buf, 12) == 0) | |
2004 | { | |
2005 | char *annex; | |
2006 | int n; | |
2007 | CORE_ADDR tlb; | |
2008 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2009 | ||
2010 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
2011 | if (n == 1) | |
2012 | { | |
c6f46ca0 | 2013 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2014 | return; |
2015 | } | |
2016 | else if (n == 0) | |
2017 | { | |
2018 | write_enn (own_buf); | |
2019 | return; | |
2020 | } | |
2021 | return; | |
2022 | } | |
2023 | ||
c74d0ad8 DJ |
2024 | /* Handle "monitor" commands. */ |
2025 | if (strncmp ("qRcmd,", own_buf, 6) == 0) | |
2026 | { | |
aef93bd7 | 2027 | char *mon = malloc (PBUFSIZ); |
c74d0ad8 DJ |
2028 | int len = strlen (own_buf + 6); |
2029 | ||
aef93bd7 DE |
2030 | if (mon == NULL) |
2031 | { | |
2032 | write_enn (own_buf); | |
2033 | return; | |
2034 | } | |
2035 | ||
ff0e980e TT |
2036 | if ((len % 2) != 0 |
2037 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2038 | { |
2039 | write_enn (own_buf); | |
2040 | free (mon); | |
2041 | return; | |
2042 | } | |
2043 | mon[len / 2] = '\0'; | |
2044 | ||
2045 | write_ok (own_buf); | |
2046 | ||
cdbfd419 PP |
2047 | if (the_target->handle_monitor_command == NULL |
2048 | || (*the_target->handle_monitor_command) (mon) == 0) | |
2049 | /* Default processing. */ | |
d73f2619 | 2050 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2051 | |
2052 | free (mon); | |
2053 | return; | |
2054 | } | |
2055 | ||
493e2a69 MS |
2056 | if (strncmp ("qSearch:memory:", own_buf, |
2057 | sizeof ("qSearch:memory:") - 1) == 0) | |
08388c79 DE |
2058 | { |
2059 | require_running (own_buf); | |
2060 | handle_search_memory (own_buf, packet_len); | |
2061 | return; | |
2062 | } | |
2063 | ||
95954743 PA |
2064 | if (strcmp (own_buf, "qAttached") == 0 |
2065 | || strncmp (own_buf, "qAttached:", sizeof ("qAttached:") - 1) == 0) | |
0b16c5cf | 2066 | { |
95954743 PA |
2067 | struct process_info *process; |
2068 | ||
2069 | if (own_buf[sizeof ("qAttached") - 1]) | |
2070 | { | |
2071 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
2072 | process = (struct process_info *) | |
2073 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
2074 | } | |
2075 | else | |
2076 | { | |
2077 | require_running (own_buf); | |
2078 | process = current_process (); | |
2079 | } | |
2080 | ||
2081 | if (process == NULL) | |
2082 | { | |
2083 | write_enn (own_buf); | |
2084 | return; | |
2085 | } | |
2086 | ||
2087 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2088 | return; |
2089 | } | |
2090 | ||
30ba68cb MS |
2091 | if (strncmp ("qCRC:", own_buf, 5) == 0) |
2092 | { | |
2093 | /* CRC check (compare-section). */ | |
2094 | char *comma; | |
aca22551 | 2095 | ULONGEST base; |
30ba68cb MS |
2096 | int len; |
2097 | unsigned long long crc; | |
2098 | ||
2099 | require_running (own_buf); | |
aca22551 | 2100 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2101 | if (*comma++ != ',') |
2102 | { | |
2103 | write_enn (own_buf); | |
2104 | return; | |
2105 | } | |
2106 | len = strtoul (comma, NULL, 16); | |
2107 | crc = crc32 (base, len, 0xffffffff); | |
2108 | /* Check for memory failure. */ | |
2109 | if (crc == (unsigned long long) -1) | |
2110 | { | |
2111 | write_enn (own_buf); | |
2112 | return; | |
2113 | } | |
2114 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2115 | return; | |
2116 | } | |
2117 | ||
d08aafef PA |
2118 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2119 | return; | |
2120 | ||
219f2f23 PA |
2121 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2122 | return; | |
2123 | ||
ce3a066d DJ |
2124 | /* Otherwise we didn't know what packet it was. Say we didn't |
2125 | understand it. */ | |
2126 | own_buf[0] = 0; | |
2127 | } | |
2128 | ||
ce1a5b52 | 2129 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2130 | static void resume (struct thread_resume *actions, size_t n); |
2131 | ||
649ebbca DE |
2132 | /* The callback that is passed to visit_actioned_threads. */ |
2133 | typedef int (visit_actioned_threads_callback_ftype) | |
2134 | (const struct thread_resume *, struct thread_info *); | |
2135 | ||
2136 | /* Struct to pass data to visit_actioned_threads. */ | |
2137 | ||
2138 | struct visit_actioned_threads_data | |
2139 | { | |
2140 | const struct thread_resume *actions; | |
2141 | size_t num_actions; | |
2142 | visit_actioned_threads_callback_ftype *callback; | |
2143 | }; | |
2144 | ||
b7ea362b PA |
2145 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2146 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca DE |
2147 | is found or CALLBACK results false. |
2148 | Note: This function is itself a callback for find_inferior. */ | |
b7ea362b PA |
2149 | |
2150 | static int | |
649ebbca | 2151 | visit_actioned_threads (struct inferior_list_entry *entry, void *datap) |
b7ea362b | 2152 | { |
649ebbca DE |
2153 | struct visit_actioned_threads_data *data = datap; |
2154 | const struct thread_resume *actions = data->actions; | |
2155 | size_t num_actions = data->num_actions; | |
2156 | visit_actioned_threads_callback_ftype *callback = data->callback; | |
2157 | size_t i; | |
b7ea362b | 2158 | |
649ebbca | 2159 | for (i = 0; i < num_actions; i++) |
b7ea362b | 2160 | { |
649ebbca | 2161 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2162 | |
649ebbca DE |
2163 | if (ptid_equal (action->thread, minus_one_ptid) |
2164 | || ptid_equal (action->thread, entry->id) | |
2165 | || ((ptid_get_pid (action->thread) | |
2166 | == ptid_get_pid (entry->id)) | |
2167 | && ptid_get_lwp (action->thread) == -1)) | |
b7ea362b | 2168 | { |
649ebbca | 2169 | struct thread_info *thread = (struct thread_info *) entry; |
b7ea362b | 2170 | |
649ebbca DE |
2171 | if ((*callback) (action, thread)) |
2172 | return 1; | |
b7ea362b PA |
2173 | } |
2174 | } | |
2175 | ||
2176 | return 0; | |
2177 | } | |
2178 | ||
2179 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2180 | status to report, report it now. */ | |
2181 | ||
2182 | static int | |
2183 | handle_pending_status (const struct thread_resume *resumption, | |
2184 | struct thread_info *thread) | |
2185 | { | |
2186 | if (thread->status_pending_p) | |
2187 | { | |
2188 | thread->status_pending_p = 0; | |
2189 | ||
2190 | last_status = thread->last_status; | |
2191 | last_ptid = thread->entry.id; | |
2192 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2193 | return 1; | |
2194 | } | |
2195 | return 0; | |
2196 | } | |
ce1a5b52 | 2197 | |
64386c31 DJ |
2198 | /* Parse vCont packets. */ |
2199 | void | |
5b1c542e | 2200 | handle_v_cont (char *own_buf) |
64386c31 DJ |
2201 | { |
2202 | char *p, *q; | |
2203 | int n = 0, i = 0; | |
2bd7c093 | 2204 | struct thread_resume *resume_info; |
95954743 | 2205 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
2206 | |
2207 | /* Count the number of semicolons in the packet. There should be one | |
2208 | for every action. */ | |
2209 | p = &own_buf[5]; | |
2210 | while (p) | |
2211 | { | |
2212 | n++; | |
2213 | p++; | |
2214 | p = strchr (p, ';'); | |
2215 | } | |
2bd7c093 PA |
2216 | |
2217 | resume_info = malloc (n * sizeof (resume_info[0])); | |
aef93bd7 DE |
2218 | if (resume_info == NULL) |
2219 | goto err; | |
64386c31 | 2220 | |
64386c31 | 2221 | p = &own_buf[5]; |
64386c31 DJ |
2222 | while (*p) |
2223 | { | |
2224 | p++; | |
2225 | ||
c2d6af84 PA |
2226 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2227 | ||
64386c31 | 2228 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2229 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2230 | else if (p[0] == 'r') |
2231 | resume_info[i].kind = resume_step; | |
64386c31 | 2232 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2233 | resume_info[i].kind = resume_continue; |
2234 | else if (p[0] == 't') | |
2235 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2236 | else |
2237 | goto err; | |
2238 | ||
2239 | if (p[0] == 'S' || p[0] == 'C') | |
2240 | { | |
2241 | int sig; | |
2242 | sig = strtol (p + 1, &q, 16); | |
2243 | if (p == q) | |
2244 | goto err; | |
2245 | p = q; | |
2246 | ||
2ea28649 | 2247 | if (!gdb_signal_to_host_p (sig)) |
64386c31 | 2248 | goto err; |
2ea28649 | 2249 | resume_info[i].sig = gdb_signal_to_host (sig); |
64386c31 | 2250 | } |
c2d6af84 PA |
2251 | else if (p[0] == 'r') |
2252 | { | |
6740dc9c | 2253 | ULONGEST addr; |
c2d6af84 | 2254 | |
6740dc9c PA |
2255 | p = unpack_varlen_hex (p + 1, &addr); |
2256 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2257 | |
6740dc9c PA |
2258 | if (*p != ',') |
2259 | goto err; | |
c2d6af84 | 2260 | |
6740dc9c PA |
2261 | p = unpack_varlen_hex (p + 1, &addr); |
2262 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2263 | } |
64386c31 DJ |
2264 | else |
2265 | { | |
64386c31 DJ |
2266 | p = p + 1; |
2267 | } | |
2268 | ||
2269 | if (p[0] == 0) | |
2270 | { | |
95954743 | 2271 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2272 | default_action = resume_info[i]; |
2273 | ||
2274 | /* Note: we don't increment i here, we'll overwrite this entry | |
2275 | the next time through. */ | |
2276 | } | |
2277 | else if (p[0] == ':') | |
2278 | { | |
95954743 | 2279 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2280 | |
64386c31 DJ |
2281 | if (p == q) |
2282 | goto err; | |
2283 | p = q; | |
2284 | if (p[0] != ';' && p[0] != 0) | |
2285 | goto err; | |
2286 | ||
95954743 | 2287 | resume_info[i].thread = ptid; |
a06660f7 | 2288 | |
64386c31 DJ |
2289 | i++; |
2290 | } | |
2291 | } | |
2292 | ||
2bd7c093 PA |
2293 | if (i < n) |
2294 | resume_info[i] = default_action; | |
64386c31 | 2295 | |
0bfdf32f | 2296 | set_desired_thread (0); |
64386c31 | 2297 | |
b7ea362b PA |
2298 | resume (resume_info, n); |
2299 | free (resume_info); | |
2300 | return; | |
2301 | ||
2302 | err: | |
2303 | write_enn (own_buf); | |
2304 | free (resume_info); | |
2305 | return; | |
2306 | } | |
2307 | ||
2308 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2309 | ||
2310 | static void | |
2311 | resume (struct thread_resume *actions, size_t num_actions) | |
2312 | { | |
bd99dc85 | 2313 | if (!non_stop) |
b7ea362b PA |
2314 | { |
2315 | /* Check if among the threads that GDB wants actioned, there's | |
2316 | one with a pending status to report. If so, skip actually | |
2317 | resuming/stopping and report the pending event | |
2318 | immediately. */ | |
649ebbca DE |
2319 | struct visit_actioned_threads_data data; |
2320 | ||
2321 | data.actions = actions; | |
2322 | data.num_actions = num_actions; | |
2323 | data.callback = handle_pending_status; | |
2324 | if (find_inferior (&all_threads, visit_actioned_threads, &data) != NULL) | |
b7ea362b | 2325 | return; |
bd99dc85 | 2326 | |
b7ea362b PA |
2327 | enable_async_io (); |
2328 | } | |
64386c31 | 2329 | |
b7ea362b | 2330 | (*the_target->resume) (actions, num_actions); |
64386c31 | 2331 | |
bd99dc85 PA |
2332 | if (non_stop) |
2333 | write_ok (own_buf); | |
2334 | else | |
2335 | { | |
95954743 | 2336 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 2337 | |
fa96cb38 PA |
2338 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
2339 | { | |
2340 | /* No proper RSP support for this yet. At least return | |
2341 | error. */ | |
2342 | sprintf (own_buf, "E.No unwaited-for children left."); | |
2343 | disable_async_io (); | |
2344 | return; | |
2345 | } | |
2346 | ||
d20a8ad9 | 2347 | if (last_status.kind != TARGET_WAITKIND_EXITED |
fa96cb38 PA |
2348 | && last_status.kind != TARGET_WAITKIND_SIGNALLED |
2349 | && last_status.kind != TARGET_WAITKIND_NO_RESUMED) | |
0bfdf32f | 2350 | current_thread->last_status = last_status; |
d20a8ad9 | 2351 | |
ce1a5b52 PA |
2352 | /* From the client's perspective, all-stop mode always stops all |
2353 | threads implicitly (and the target backend has already done | |
2354 | so by now). Tag all threads as "want-stopped", so we don't | |
2355 | resume them implicitly without the client telling us to. */ | |
2356 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
2357 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2358 | disable_async_io (); | |
6bd31874 JB |
2359 | |
2360 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2361 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2362 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 | 2363 | } |
64386c31 DJ |
2364 | } |
2365 | ||
2d717e4f DJ |
2366 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
2367 | int | |
5b1c542e | 2368 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
2369 | { |
2370 | int pid; | |
2371 | ||
2372 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2373 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2374 | { |
aeba519e PA |
2375 | /* Don't report shared library events after attaching, even if |
2376 | some libraries are preloaded. GDB will always poll the | |
2377 | library list. Avoids the "stopped by shared library event" | |
2378 | notice on the GDB side. */ | |
2379 | dlls_changed = 0; | |
bd99dc85 PA |
2380 | |
2381 | if (non_stop) | |
2382 | { | |
2383 | /* In non-stop, we don't send a resume reply. Stop events | |
2384 | will follow up using the normal notification | |
2385 | mechanism. */ | |
2386 | write_ok (own_buf); | |
2387 | } | |
2388 | else | |
2389 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2390 | ||
2d717e4f DJ |
2391 | return 1; |
2392 | } | |
2393 | else | |
2394 | { | |
2395 | write_enn (own_buf); | |
2396 | return 0; | |
2397 | } | |
2398 | } | |
2399 | ||
2400 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2401 | static int | |
5b1c542e | 2402 | handle_v_run (char *own_buf) |
2d717e4f | 2403 | { |
aef93bd7 | 2404 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
2405 | int i, new_argc; |
2406 | ||
2407 | new_argc = 0; | |
2408 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2409 | { | |
2410 | p++; | |
2411 | new_argc++; | |
2412 | } | |
2413 | ||
aef93bd7 DE |
2414 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
2415 | if (new_argv == NULL) | |
2416 | { | |
2417 | write_enn (own_buf); | |
2418 | return 0; | |
2419 | } | |
2420 | ||
2d717e4f DJ |
2421 | i = 0; |
2422 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
2423 | { | |
2424 | next_p = strchr (p, ';'); | |
2425 | if (next_p == NULL) | |
2426 | next_p = p + strlen (p); | |
2427 | ||
2428 | if (i == 0 && p == next_p) | |
2429 | new_argv[i] = NULL; | |
2430 | else | |
2431 | { | |
aef93bd7 | 2432 | /* FIXME: Fail request if out of memory instead of dying. */ |
bca929d3 | 2433 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
ff0e980e | 2434 | hex2bin (p, (gdb_byte *) new_argv[i], (next_p - p) / 2); |
2d717e4f DJ |
2435 | new_argv[i][(next_p - p) / 2] = '\0'; |
2436 | } | |
2437 | ||
2438 | if (*next_p) | |
2439 | next_p++; | |
2440 | i++; | |
2441 | } | |
2442 | new_argv[i] = NULL; | |
2443 | ||
2444 | if (new_argv[0] == NULL) | |
2445 | { | |
f142445f DJ |
2446 | /* GDB didn't specify a program to run. Use the program from the |
2447 | last run with the new argument list. */ | |
9b710a42 | 2448 | |
2d717e4f DJ |
2449 | if (program_argv == NULL) |
2450 | { | |
2451 | write_enn (own_buf); | |
b2c04452 | 2452 | freeargv (new_argv); |
2d717e4f DJ |
2453 | return 0; |
2454 | } | |
2455 | ||
aef93bd7 DE |
2456 | new_argv[0] = strdup (program_argv[0]); |
2457 | if (new_argv[0] == NULL) | |
2458 | { | |
aef93bd7 | 2459 | write_enn (own_buf); |
b2c04452 | 2460 | freeargv (new_argv); |
aef93bd7 | 2461 | return 0; |
1b3f6016 | 2462 | } |
2d717e4f | 2463 | } |
f142445f | 2464 | |
aef93bd7 DE |
2465 | /* Free the old argv and install the new one. */ |
2466 | freeargv (program_argv); | |
f142445f | 2467 | program_argv = new_argv; |
2d717e4f | 2468 | |
5b1c542e PA |
2469 | start_inferior (program_argv); |
2470 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 2471 | { |
5b1c542e | 2472 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
2473 | |
2474 | /* In non-stop, sending a resume reply doesn't set the general | |
2475 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
2476 | query which is the main thread of the new inferior. */ | |
2477 | if (non_stop) | |
2478 | general_thread = last_ptid; | |
2479 | ||
2d717e4f DJ |
2480 | return 1; |
2481 | } | |
2482 | else | |
2483 | { | |
2484 | write_enn (own_buf); | |
2485 | return 0; | |
2486 | } | |
2487 | } | |
2488 | ||
95954743 PA |
2489 | /* Kill process. Return 1 if successful, 0 if failure. */ |
2490 | int | |
2491 | handle_v_kill (char *own_buf) | |
2492 | { | |
2493 | int pid; | |
2494 | char *p = &own_buf[6]; | |
0f54c268 PM |
2495 | if (multi_process) |
2496 | pid = strtol (p, NULL, 16); | |
2497 | else | |
2498 | pid = signal_pid; | |
95954743 PA |
2499 | if (pid != 0 && kill_inferior (pid) == 0) |
2500 | { | |
2501 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
a493e3e2 | 2502 | last_status.value.sig = GDB_SIGNAL_KILL; |
95954743 PA |
2503 | last_ptid = pid_to_ptid (pid); |
2504 | discard_queued_stop_replies (pid); | |
2505 | write_ok (own_buf); | |
2506 | return 1; | |
2507 | } | |
2508 | else | |
2509 | { | |
2510 | write_enn (own_buf); | |
2511 | return 0; | |
2512 | } | |
2513 | } | |
2514 | ||
64386c31 DJ |
2515 | /* Handle all of the extended 'v' packets. */ |
2516 | void | |
5b1c542e | 2517 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2518 | { |
db42f210 | 2519 | if (!disable_packet_vCont) |
64386c31 | 2520 | { |
db42f210 PA |
2521 | if (strncmp (own_buf, "vCont;", 6) == 0) |
2522 | { | |
2523 | require_running (own_buf); | |
5b1c542e | 2524 | handle_v_cont (own_buf); |
db42f210 PA |
2525 | return; |
2526 | } | |
64386c31 | 2527 | |
db42f210 PA |
2528 | if (strncmp (own_buf, "vCont?", 6) == 0) |
2529 | { | |
bd99dc85 | 2530 | strcpy (own_buf, "vCont;c;C;s;S;t"); |
c2d6af84 PA |
2531 | if (target_supports_range_stepping ()) |
2532 | { | |
2533 | own_buf = own_buf + strlen (own_buf); | |
2534 | strcpy (own_buf, ";r"); | |
2535 | } | |
db42f210 PA |
2536 | return; |
2537 | } | |
64386c31 DJ |
2538 | } |
2539 | ||
a6b151f1 DJ |
2540 | if (strncmp (own_buf, "vFile:", 6) == 0 |
2541 | && handle_vFile (own_buf, packet_len, new_packet_len)) | |
2542 | return; | |
2543 | ||
2d717e4f DJ |
2544 | if (strncmp (own_buf, "vAttach;", 8) == 0) |
2545 | { | |
901f9912 | 2546 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2547 | { |
fd96d250 PA |
2548 | fprintf (stderr, "Already debugging a process\n"); |
2549 | write_enn (own_buf); | |
2550 | return; | |
2d717e4f | 2551 | } |
5b1c542e | 2552 | handle_v_attach (own_buf); |
2d717e4f DJ |
2553 | return; |
2554 | } | |
2555 | ||
2556 | if (strncmp (own_buf, "vRun;", 5) == 0) | |
2557 | { | |
901f9912 | 2558 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2559 | { |
fd96d250 PA |
2560 | fprintf (stderr, "Already debugging a process\n"); |
2561 | write_enn (own_buf); | |
2562 | return; | |
2d717e4f | 2563 | } |
5b1c542e | 2564 | handle_v_run (own_buf); |
2d717e4f DJ |
2565 | return; |
2566 | } | |
2567 | ||
95954743 PA |
2568 | if (strncmp (own_buf, "vKill;", 6) == 0) |
2569 | { | |
2570 | if (!target_running ()) | |
2571 | { | |
2572 | fprintf (stderr, "No process to kill\n"); | |
2573 | write_enn (own_buf); | |
2574 | return; | |
2575 | } | |
2576 | handle_v_kill (own_buf); | |
2577 | return; | |
2578 | } | |
2579 | ||
14a00470 YQ |
2580 | if (handle_notif_ack (own_buf, packet_len)) |
2581 | return; | |
bd99dc85 | 2582 | |
64386c31 DJ |
2583 | /* Otherwise we didn't know what packet it was. Say we didn't |
2584 | understand it. */ | |
2585 | own_buf[0] = 0; | |
2586 | return; | |
2587 | } | |
2588 | ||
0bfdf32f | 2589 | /* Resume thread and wait for another event. In non-stop mode, |
bd99dc85 PA |
2590 | don't really wait here, but return immediatelly to the event |
2591 | loop. */ | |
1fd7cdc2 | 2592 | static void |
5b1c542e | 2593 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
2594 | { |
2595 | struct thread_resume resume_info[2]; | |
2596 | int n = 0; | |
2bd7c093 | 2597 | int valid_cont_thread; |
a20d5e98 | 2598 | |
0bfdf32f | 2599 | set_desired_thread (0); |
64386c31 | 2600 | |
95954743 PA |
2601 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
2602 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
2603 | |
2604 | if (step || sig || valid_cont_thread) | |
64386c31 | 2605 | { |
fbd5db48 | 2606 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
2607 | if (step) |
2608 | resume_info[0].kind = resume_step; | |
2609 | else | |
2610 | resume_info[0].kind = resume_continue; | |
64386c31 | 2611 | resume_info[0].sig = sig; |
64386c31 DJ |
2612 | n++; |
2613 | } | |
2bd7c093 PA |
2614 | |
2615 | if (!valid_cont_thread) | |
2616 | { | |
95954743 | 2617 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 2618 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
2619 | resume_info[n].sig = 0; |
2620 | n++; | |
2621 | } | |
64386c31 | 2622 | |
b7ea362b | 2623 | resume (resume_info, n); |
bd99dc85 PA |
2624 | } |
2625 | ||
2626 | /* Callback for for_each_inferior. Make a new stop reply for each | |
2627 | stopped thread. */ | |
2628 | ||
95954743 PA |
2629 | static int |
2630 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 2631 | { |
8336d594 | 2632 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 2633 | |
8336d594 PA |
2634 | /* For now, assume targets that don't have this callback also don't |
2635 | manage the thread's last_status field. */ | |
2636 | if (the_target->thread_stopped == NULL) | |
95954743 | 2637 | { |
14a00470 YQ |
2638 | struct vstop_notif *new_notif = xmalloc (sizeof (*new_notif)); |
2639 | ||
2640 | new_notif->ptid = entry->id; | |
2641 | new_notif->status = thread->last_status; | |
8336d594 PA |
2642 | /* Pass the last stop reply back to GDB, but don't notify |
2643 | yet. */ | |
14a00470 YQ |
2644 | notif_event_enque (¬if_stop, |
2645 | (struct notif_event *) new_notif); | |
8336d594 PA |
2646 | } |
2647 | else | |
2648 | { | |
2649 | if (thread_stopped (thread)) | |
2650 | { | |
2651 | if (debug_threads) | |
3360c0bf LM |
2652 | { |
2653 | char *status_string | |
2654 | = target_waitstatus_to_string (&thread->last_status); | |
2655 | ||
87ce2a04 DE |
2656 | debug_printf ("Reporting thread %s as already stopped with %s\n", |
2657 | target_pid_to_str (entry->id), | |
2658 | status_string); | |
3360c0bf LM |
2659 | |
2660 | xfree (status_string); | |
2661 | } | |
8336d594 | 2662 | |
d20a8ad9 PA |
2663 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
2664 | ||
8336d594 PA |
2665 | /* Pass the last stop reply back to GDB, but don't notify |
2666 | yet. */ | |
2667 | queue_stop_reply (entry->id, &thread->last_status); | |
2668 | } | |
95954743 PA |
2669 | } |
2670 | ||
2671 | return 0; | |
64386c31 DJ |
2672 | } |
2673 | ||
ce1a5b52 PA |
2674 | /* Set this inferior threads's state as "want-stopped". We won't |
2675 | resume this thread until the client gives us another action for | |
2676 | it. */ | |
8336d594 PA |
2677 | |
2678 | static void | |
2679 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
2680 | { | |
2681 | struct thread_info *thread = (struct thread_info *) entry; | |
2682 | ||
2683 | thread->last_resume_kind = resume_stop; | |
2684 | ||
2685 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
2686 | { | |
ce1a5b52 PA |
2687 | /* Most threads are stopped implicitly (all-stop); tag that with |
2688 | signal 0. */ | |
8336d594 | 2689 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 2690 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
2691 | } |
2692 | } | |
2693 | ||
2694 | /* Set all threads' states as "want-stopped". */ | |
2695 | ||
2696 | static void | |
2697 | gdb_wants_all_threads_stopped (void) | |
2698 | { | |
2699 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
2700 | } | |
2701 | ||
2702 | /* Clear the gdb_detached flag of every process. */ | |
2703 | ||
2704 | static void | |
2705 | gdb_reattached_process (struct inferior_list_entry *entry) | |
2706 | { | |
2707 | struct process_info *process = (struct process_info *) entry; | |
2708 | ||
2709 | process->gdb_detached = 0; | |
2710 | } | |
2711 | ||
b7ea362b PA |
2712 | /* Callback for for_each_inferior. Clear the thread's pending status |
2713 | flag. */ | |
2714 | ||
2715 | static void | |
2716 | clear_pending_status_callback (struct inferior_list_entry *entry) | |
2717 | { | |
2718 | struct thread_info *thread = (struct thread_info *) entry; | |
2719 | ||
2720 | thread->status_pending_p = 0; | |
2721 | } | |
2722 | ||
2723 | /* Callback for for_each_inferior. If the thread is stopped with an | |
2724 | interesting event, mark it as having a pending event. */ | |
2725 | ||
2726 | static void | |
2727 | set_pending_status_callback (struct inferior_list_entry *entry) | |
2728 | { | |
2729 | struct thread_info *thread = (struct thread_info *) entry; | |
2730 | ||
2731 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED | |
2732 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
2733 | /* A breakpoint, watchpoint or finished step from a previous | |
2734 | GDB run isn't considered interesting for a new GDB run. | |
2735 | If we left those pending, the new GDB could consider them | |
2736 | random SIGTRAPs. This leaves out real async traps. We'd | |
2737 | have to peek into the (target-specific) siginfo to | |
2738 | distinguish those. */ | |
2739 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
2740 | thread->status_pending_p = 1; | |
2741 | } | |
2742 | ||
2743 | /* Callback for find_inferior. Return true if ENTRY (a thread) has a | |
2744 | pending status to report to GDB. */ | |
2745 | ||
2746 | static int | |
2747 | find_status_pending_thread_callback (struct inferior_list_entry *entry, void *data) | |
2748 | { | |
2749 | struct thread_info *thread = (struct thread_info *) entry; | |
2750 | ||
2751 | return thread->status_pending_p; | |
2752 | } | |
2753 | ||
5b1c542e PA |
2754 | /* Status handler for the '?' packet. */ |
2755 | ||
2756 | static void | |
2757 | handle_status (char *own_buf) | |
2758 | { | |
8336d594 PA |
2759 | /* GDB is connected, don't forward events to the target anymore. */ |
2760 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
2761 | |
2762 | /* In non-stop mode, we must send a stop reply for each stopped | |
2763 | thread. In all-stop mode, just send one for the first stopped | |
2764 | thread we find. */ | |
2765 | ||
2766 | if (non_stop) | |
2767 | { | |
8336d594 | 2768 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); |
bd99dc85 PA |
2769 | |
2770 | /* The first is sent immediatly. OK is sent if there is no | |
2771 | stopped thread, which is the same handling of the vStopped | |
2772 | packet (by design). */ | |
14a00470 | 2773 | notif_write_event (¬if_stop, own_buf); |
bd99dc85 | 2774 | } |
5b1c542e | 2775 | else |
bd99dc85 | 2776 | { |
b7ea362b PA |
2777 | struct inferior_list_entry *thread = NULL; |
2778 | ||
7984d532 | 2779 | pause_all (0); |
fa593d66 | 2780 | stabilize_threads (); |
8336d594 PA |
2781 | gdb_wants_all_threads_stopped (); |
2782 | ||
b7ea362b PA |
2783 | /* We can only report one status, but we might be coming out of |
2784 | non-stop -- if more than one thread is stopped with | |
2785 | interesting events, leave events for the threads we're not | |
2786 | reporting now pending. They'll be reported the next time the | |
2787 | threads are resumed. Start by marking all interesting events | |
2788 | as pending. */ | |
2789 | for_each_inferior (&all_threads, set_pending_status_callback); | |
2790 | ||
2791 | /* Prefer the last thread that reported an event to GDB (even if | |
2792 | that was a GDB_SIGNAL_TRAP). */ | |
2793 | if (last_status.kind != TARGET_WAITKIND_IGNORE | |
2794 | && last_status.kind != TARGET_WAITKIND_EXITED | |
2795 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
2796 | thread = find_inferior_id (&all_threads, last_ptid); | |
2797 | ||
2798 | /* If the last event thread is not found for some reason, look | |
2799 | for some other thread that might have an event to report. */ | |
2800 | if (thread == NULL) | |
2801 | thread = find_inferior (&all_threads, | |
2802 | find_status_pending_thread_callback, NULL); | |
2803 | ||
2804 | /* If we're still out of luck, simply pick the first thread in | |
2805 | the thread list. */ | |
2806 | if (thread == NULL) | |
649ebbca | 2807 | thread = get_first_inferior (&all_threads); |
b7ea362b PA |
2808 | |
2809 | if (thread != NULL) | |
8336d594 | 2810 | { |
b7ea362b PA |
2811 | struct thread_info *tp = (struct thread_info *) thread; |
2812 | ||
2813 | /* We're reporting this event, so it's no longer | |
2814 | pending. */ | |
2815 | tp->status_pending_p = 0; | |
2816 | ||
2817 | /* GDB assumes the current thread is the thread we're | |
2818 | reporting the status for. */ | |
2819 | general_thread = thread->id; | |
0bfdf32f | 2820 | set_desired_thread (1); |
8336d594 | 2821 | |
b7ea362b PA |
2822 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
2823 | prepare_resume_reply (own_buf, tp->entry.id, &tp->last_status); | |
8336d594 | 2824 | } |
bd99dc85 PA |
2825 | else |
2826 | strcpy (own_buf, "W00"); | |
2827 | } | |
5b1c542e PA |
2828 | } |
2829 | ||
dd24457d DJ |
2830 | static void |
2831 | gdbserver_version (void) | |
2832 | { | |
c16158bc | 2833 | printf ("GNU gdbserver %s%s\n" |
76f2b779 | 2834 | "Copyright (C) 2015 Free Software Foundation, Inc.\n" |
493e2a69 MS |
2835 | "gdbserver is free software, covered by the " |
2836 | "GNU General Public License.\n" | |
dd24457d | 2837 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 2838 | PKGVERSION, version, host_name); |
dd24457d DJ |
2839 | } |
2840 | ||
0bc68c49 | 2841 | static void |
c16158bc | 2842 | gdbserver_usage (FILE *stream) |
0bc68c49 | 2843 | { |
c16158bc JM |
2844 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
2845 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
2846 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
2847 | "\n" | |
2848 | "COMM may either be a tty device (for serial debugging), or \n" | |
2849 | "HOST:PORT to listen for a TCP connection.\n" | |
2850 | "\n" | |
2851 | "Options:\n" | |
62709adf | 2852 | " --debug Enable general debugging output.\n" |
87ce2a04 DE |
2853 | " --debug-format=opt1[,opt2,...]\n" |
2854 | " Specify extra content in debugging output.\n" | |
2855 | " Options:\n" | |
2856 | " all\n" | |
2857 | " none\n" | |
87ce2a04 | 2858 | " timestamp\n" |
62709adf PA |
2859 | " --remote-debug Enable remote protocol debugging output.\n" |
2860 | " --version Display version information and exit.\n" | |
03f2bd59 JK |
2861 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" |
2862 | " --once Exit after the first connection has " | |
2863 | "closed.\n"); | |
c16158bc JM |
2864 | if (REPORT_BUGS_TO[0] && stream == stdout) |
2865 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
2866 | } |
2867 | ||
db42f210 PA |
2868 | static void |
2869 | gdbserver_show_disableable (FILE *stream) | |
2870 | { | |
2871 | fprintf (stream, "Disableable packets:\n" | |
2872 | " vCont \tAll vCont packets\n" | |
2873 | " qC \tQuerying the current thread\n" | |
2874 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
2875 | " Tthread \tPassing the thread specifier in the " |
2876 | "T stop reply packet\n" | |
db42f210 PA |
2877 | " threads \tAll of the above\n"); |
2878 | } | |
2879 | ||
2880 | ||
2d717e4f DJ |
2881 | #undef require_running |
2882 | #define require_running(BUF) \ | |
2883 | if (!target_running ()) \ | |
2884 | { \ | |
2885 | write_enn (BUF); \ | |
2886 | break; \ | |
2887 | } | |
2888 | ||
95954743 PA |
2889 | static int |
2890 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
2891 | { | |
2892 | int pid = * (int *) args; | |
2893 | ||
2894 | if (ptid_get_pid (entry->id) == pid) | |
2895 | return 1; | |
2896 | ||
2897 | return 0; | |
2898 | } | |
2899 | ||
2900 | static void | |
2901 | kill_inferior_callback (struct inferior_list_entry *entry) | |
2902 | { | |
2903 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 2904 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
2905 | |
2906 | kill_inferior (pid); | |
2907 | discard_queued_stop_replies (pid); | |
2908 | } | |
2909 | ||
9f767825 DE |
2910 | /* Callback for for_each_inferior to detach or kill the inferior, |
2911 | depending on whether we attached to it or not. | |
2912 | We inform the user whether we're detaching or killing the process | |
2913 | as this is only called when gdbserver is about to exit. */ | |
2914 | ||
95954743 PA |
2915 | static void |
2916 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
2917 | { | |
2918 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 2919 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
2920 | |
2921 | if (process->attached) | |
2922 | detach_inferior (pid); | |
2923 | else | |
2924 | kill_inferior (pid); | |
2925 | ||
2926 | discard_queued_stop_replies (pid); | |
2927 | } | |
2928 | ||
9f767825 DE |
2929 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
2930 | the pids of started inferiors. */ | |
2931 | ||
2932 | static void | |
2933 | print_started_pid (struct inferior_list_entry *entry) | |
2934 | { | |
2935 | struct process_info *process = (struct process_info *) entry; | |
2936 | ||
2937 | if (! process->attached) | |
2938 | { | |
80894984 | 2939 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
2940 | fprintf (stderr, " %d", pid); |
2941 | } | |
2942 | } | |
2943 | ||
2944 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
2945 | the pids of attached inferiors. */ | |
2946 | ||
2947 | static void | |
2948 | print_attached_pid (struct inferior_list_entry *entry) | |
2949 | { | |
2950 | struct process_info *process = (struct process_info *) entry; | |
2951 | ||
2952 | if (process->attached) | |
2953 | { | |
80894984 | 2954 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
2955 | fprintf (stderr, " %d", pid); |
2956 | } | |
2957 | } | |
2958 | ||
2959 | /* Call this when exiting gdbserver with possible inferiors that need | |
2960 | to be killed or detached from. */ | |
2961 | ||
2962 | static void | |
2963 | detach_or_kill_for_exit (void) | |
2964 | { | |
2965 | /* First print a list of the inferiors we will be killing/detaching. | |
2966 | This is to assist the user, for example, in case the inferior unexpectedly | |
2967 | dies after we exit: did we screw up or did the inferior exit on its own? | |
2968 | Having this info will save some head-scratching. */ | |
2969 | ||
2970 | if (have_started_inferiors_p ()) | |
2971 | { | |
2972 | fprintf (stderr, "Killing process(es):"); | |
2973 | for_each_inferior (&all_processes, print_started_pid); | |
2974 | fprintf (stderr, "\n"); | |
2975 | } | |
2976 | if (have_attached_inferiors_p ()) | |
2977 | { | |
2978 | fprintf (stderr, "Detaching process(es):"); | |
2979 | for_each_inferior (&all_processes, print_attached_pid); | |
2980 | fprintf (stderr, "\n"); | |
2981 | } | |
2982 | ||
2983 | /* Now we can kill or detach the inferiors. */ | |
2984 | ||
2985 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
2986 | } | |
2987 | ||
860789c7 GB |
2988 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
2989 | static int exit_code; | |
2990 | ||
2991 | /* Cleanup version of detach_or_kill_for_exit. */ | |
2992 | ||
2993 | static void | |
2994 | detach_or_kill_for_exit_cleanup (void *ignore) | |
2995 | { | |
2996 | volatile struct gdb_exception exception; | |
2997 | ||
2998 | TRY_CATCH (exception, RETURN_MASK_ALL) | |
2999 | { | |
3000 | detach_or_kill_for_exit (); | |
3001 | } | |
3002 | ||
3003 | if (exception.reason < 0) | |
3004 | { | |
3005 | fflush (stdout); | |
3006 | fprintf (stderr, "Detach or kill failed: %s\n", exception.message); | |
3007 | exit_code = 1; | |
3008 | } | |
3009 | } | |
3010 | ||
3011 | /* Main function. This is called by the real "main" function, | |
3012 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3013 | ||
3014 | static void ATTRIBUTE_NORETURN | |
3015 | captured_main (int argc, char *argv[]) | |
c906108c | 3016 | { |
0729219d DJ |
3017 | int bad_attach; |
3018 | int pid; | |
2d717e4f DJ |
3019 | char *arg_end, *port; |
3020 | char **next_arg = &argv[1]; | |
89dc0afd JK |
3021 | volatile int multi_mode = 0; |
3022 | volatile int attach = 0; | |
2d717e4f | 3023 | int was_running; |
c906108c | 3024 | |
2d717e4f | 3025 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3026 | { |
2d717e4f DJ |
3027 | if (strcmp (*next_arg, "--version") == 0) |
3028 | { | |
3029 | gdbserver_version (); | |
3030 | exit (0); | |
3031 | } | |
3032 | else if (strcmp (*next_arg, "--help") == 0) | |
3033 | { | |
c16158bc | 3034 | gdbserver_usage (stdout); |
2d717e4f DJ |
3035 | exit (0); |
3036 | } | |
3037 | else if (strcmp (*next_arg, "--attach") == 0) | |
3038 | attach = 1; | |
3039 | else if (strcmp (*next_arg, "--multi") == 0) | |
3040 | multi_mode = 1; | |
ccd213ac DJ |
3041 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3042 | { | |
3043 | next_arg++; | |
3044 | ||
3045 | wrapper_argv = next_arg; | |
3046 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
3047 | next_arg++; | |
3048 | ||
3049 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
3050 | { | |
c16158bc | 3051 | gdbserver_usage (stderr); |
ccd213ac DJ |
3052 | exit (1); |
3053 | } | |
3054 | ||
3055 | /* Consume the "--". */ | |
3056 | *next_arg = NULL; | |
3057 | } | |
2d717e4f DJ |
3058 | else if (strcmp (*next_arg, "--debug") == 0) |
3059 | debug_threads = 1; | |
87ce2a04 DE |
3060 | else if (strncmp (*next_arg, |
3061 | "--debug-format=", | |
3062 | sizeof ("--debug-format=") - 1) == 0) | |
3063 | { | |
3064 | char *error_msg | |
3065 | = parse_debug_format_options ((*next_arg) | |
3066 | + sizeof ("--debug-format=") - 1, 0); | |
3067 | ||
3068 | if (error_msg != NULL) | |
3069 | { | |
3070 | fprintf (stderr, "%s", error_msg); | |
3071 | exit (1); | |
3072 | } | |
3073 | } | |
62709adf PA |
3074 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
3075 | remote_debug = 1; | |
db42f210 PA |
3076 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3077 | { | |
3078 | gdbserver_show_disableable (stdout); | |
3079 | exit (0); | |
3080 | } | |
3081 | else if (strncmp (*next_arg, | |
3082 | "--disable-packet=", | |
3083 | sizeof ("--disable-packet=") - 1) == 0) | |
3084 | { | |
3085 | char *packets, *tok; | |
3086 | ||
3087 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
3088 | for (tok = strtok (packets, ","); | |
3089 | tok != NULL; | |
3090 | tok = strtok (NULL, ",")) | |
3091 | { | |
3092 | if (strcmp ("vCont", tok) == 0) | |
3093 | disable_packet_vCont = 1; | |
3094 | else if (strcmp ("Tthread", tok) == 0) | |
3095 | disable_packet_Tthread = 1; | |
3096 | else if (strcmp ("qC", tok) == 0) | |
3097 | disable_packet_qC = 1; | |
3098 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
3099 | disable_packet_qfThreadInfo = 1; | |
3100 | else if (strcmp ("threads", tok) == 0) | |
3101 | { | |
3102 | disable_packet_vCont = 1; | |
3103 | disable_packet_Tthread = 1; | |
3104 | disable_packet_qC = 1; | |
3105 | disable_packet_qfThreadInfo = 1; | |
3106 | } | |
3107 | else | |
3108 | { | |
3109 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3110 | tok); | |
3111 | gdbserver_show_disableable (stderr); | |
3112 | exit (1); | |
3113 | } | |
3114 | } | |
3115 | } | |
e0f9f062 DE |
3116 | else if (strcmp (*next_arg, "-") == 0) |
3117 | { | |
3118 | /* "-" specifies a stdio connection and is a form of port | |
3119 | specification. */ | |
3120 | *next_arg = STDIO_CONNECTION_NAME; | |
3121 | break; | |
3122 | } | |
03583c20 UW |
3123 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
3124 | disable_randomization = 1; | |
3125 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
3126 | disable_randomization = 0; | |
03f2bd59 JK |
3127 | else if (strcmp (*next_arg, "--once") == 0) |
3128 | run_once = 1; | |
2d717e4f DJ |
3129 | else |
3130 | { | |
3131 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3132 | exit (1); | |
3133 | } | |
dd24457d | 3134 | |
2d717e4f DJ |
3135 | next_arg++; |
3136 | continue; | |
dd24457d DJ |
3137 | } |
3138 | ||
2d717e4f DJ |
3139 | port = *next_arg; |
3140 | next_arg++; | |
3141 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
3142 | { | |
c16158bc | 3143 | gdbserver_usage (stderr); |
2d717e4f DJ |
3144 | exit (1); |
3145 | } | |
3146 | ||
602e3198 JK |
3147 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3148 | opened by remote_prepare. */ | |
3149 | notice_open_fds (); | |
3150 | ||
e0f9f062 DE |
3151 | /* We need to know whether the remote connection is stdio before |
3152 | starting the inferior. Inferiors created in this scenario have | |
3153 | stdin,stdout redirected. So do this here before we call | |
3154 | start_inferior. */ | |
3155 | remote_prepare (port); | |
3156 | ||
0729219d DJ |
3157 | bad_attach = 0; |
3158 | pid = 0; | |
2d717e4f DJ |
3159 | |
3160 | /* --attach used to come after PORT, so allow it there for | |
3161 | compatibility. */ | |
3162 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3163 | { |
2d717e4f DJ |
3164 | attach = 1; |
3165 | next_arg++; | |
45b7b345 DJ |
3166 | } |
3167 | ||
2d717e4f DJ |
3168 | if (attach |
3169 | && (*next_arg == NULL | |
3170 | || (*next_arg)[0] == '\0' | |
3171 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3172 | || *arg_end != '\0' | |
3173 | || next_arg[1] != NULL)) | |
3174 | bad_attach = 1; | |
3175 | ||
3176 | if (bad_attach) | |
dd24457d | 3177 | { |
c16158bc | 3178 | gdbserver_usage (stderr); |
dd24457d DJ |
3179 | exit (1); |
3180 | } | |
c906108c | 3181 | |
a20d5e98 | 3182 | initialize_async_io (); |
4ce44c66 | 3183 | initialize_low (); |
60f662b0 | 3184 | initialize_event_loop (); |
219f2f23 PA |
3185 | if (target_supports_tracepoints ()) |
3186 | initialize_tracepoint (); | |
4ce44c66 | 3187 | |
bca929d3 DE |
3188 | own_buf = xmalloc (PBUFSIZ + 1); |
3189 | mem_buf = xmalloc (PBUFSIZ); | |
0a30fbc4 | 3190 | |
2d717e4f | 3191 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3192 | { |
2d717e4f DJ |
3193 | int i, n; |
3194 | ||
3195 | n = argc - (next_arg - argv); | |
bca929d3 | 3196 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
2d717e4f | 3197 | for (i = 0; i < n; i++) |
bca929d3 | 3198 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
3199 | program_argv[i] = NULL; |
3200 | ||
45b7b345 | 3201 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 3202 | start_inferior (program_argv); |
c906108c | 3203 | |
c588c53c MS |
3204 | /* We are now (hopefully) stopped at the first instruction of |
3205 | the target process. This assumes that the target process was | |
3206 | successfully created. */ | |
45b7b345 | 3207 | } |
2d717e4f DJ |
3208 | else if (pid != 0) |
3209 | { | |
5b1c542e | 3210 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3211 | error ("Attaching not supported on this target"); |
3212 | ||
3213 | /* Otherwise succeeded. */ | |
3214 | } | |
45b7b345 DJ |
3215 | else |
3216 | { | |
5b1c542e PA |
3217 | last_status.kind = TARGET_WAITKIND_EXITED; |
3218 | last_status.value.integer = 0; | |
95954743 | 3219 | last_ptid = minus_one_ptid; |
45b7b345 | 3220 | } |
860789c7 | 3221 | make_cleanup (detach_or_kill_for_exit_cleanup, NULL); |
c906108c | 3222 | |
14a00470 YQ |
3223 | initialize_notif (); |
3224 | ||
311de423 PA |
3225 | /* Don't report shared library events on the initial connection, |
3226 | even if some libraries are preloaded. Avoids the "stopped by | |
3227 | shared library event" notice on gdb side. */ | |
3228 | dlls_changed = 0; | |
3229 | ||
5b1c542e PA |
3230 | if (last_status.kind == TARGET_WAITKIND_EXITED |
3231 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3232 | was_running = 0; |
3233 | else | |
3234 | was_running = 1; | |
3235 | ||
3236 | if (!was_running && !multi_mode) | |
860789c7 | 3237 | error ("No program to debug"); |
c588c53c | 3238 | |
c906108c SS |
3239 | while (1) |
3240 | { | |
860789c7 GB |
3241 | volatile struct gdb_exception exception; |
3242 | ||
a6f3e723 | 3243 | noack_mode = 0; |
95954743 | 3244 | multi_process = 0; |
8336d594 PA |
3245 | /* Be sure we're out of tfind mode. */ |
3246 | current_traceframe = -1; | |
40e91bc7 | 3247 | cont_thread = null_ptid; |
bd99dc85 | 3248 | |
2d717e4f | 3249 | remote_open (port); |
c906108c | 3250 | |
860789c7 | 3251 | TRY_CATCH (exception, RETURN_MASK_ERROR) |
2d717e4f | 3252 | { |
860789c7 GB |
3253 | /* Wait for events. This will return when all event sources |
3254 | are removed from the event loop. */ | |
3255 | start_event_loop (); | |
2d717e4f | 3256 | |
860789c7 GB |
3257 | /* If an exit was requested (using the "monitor exit" |
3258 | command), terminate now. The only other way to get | |
3259 | here is for getpkt to fail; close the connection | |
3260 | and reopen it at the top of the loop. */ | |
bd99dc85 | 3261 | |
860789c7 GB |
3262 | if (exit_requested || run_once) |
3263 | throw_quit ("Quit"); | |
bd99dc85 | 3264 | |
860789c7 GB |
3265 | fprintf (stderr, |
3266 | "Remote side has terminated connection. " | |
3267 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3268 | |
860789c7 GB |
3269 | /* Get rid of any pending statuses. An eventual reconnection |
3270 | (by the same GDB instance or another) will refresh all its | |
3271 | state from scratch. */ | |
3272 | discard_queued_stop_replies (-1); | |
3273 | for_each_inferior (&all_threads, | |
3274 | clear_pending_status_callback); | |
9939e131 | 3275 | |
860789c7 | 3276 | if (tracing) |
8336d594 | 3277 | { |
860789c7 | 3278 | if (disconnected_tracing) |
8336d594 | 3279 | { |
860789c7 GB |
3280 | /* Try to enable non-stop/async mode, so we we can |
3281 | both wait for an async socket accept, and handle | |
3282 | async target events simultaneously. There's also | |
3283 | no point either in having the target always stop | |
3284 | all threads, when we're going to pass signals | |
3285 | down without informing GDB. */ | |
3286 | if (!non_stop) | |
3287 | { | |
3288 | if (start_non_stop (1)) | |
3289 | non_stop = 1; | |
3290 | ||
3291 | /* Detaching implicitly resumes all threads; | |
3292 | simply disconnecting does not. */ | |
3293 | } | |
3294 | } | |
3295 | else | |
3296 | { | |
3297 | fprintf (stderr, | |
3298 | "Disconnected tracing disabled; " | |
3299 | "stopping trace run.\n"); | |
3300 | stop_tracing (); | |
8336d594 PA |
3301 | } |
3302 | } | |
860789c7 GB |
3303 | } |
3304 | ||
3305 | if (exception.reason == RETURN_ERROR) | |
3306 | { | |
3307 | if (response_needed) | |
8336d594 | 3308 | { |
860789c7 GB |
3309 | write_enn (own_buf); |
3310 | putpkt (own_buf); | |
8336d594 PA |
3311 | } |
3312 | } | |
bd99dc85 PA |
3313 | } |
3314 | } | |
01f9e8fa | 3315 | |
860789c7 GB |
3316 | /* Main function. */ |
3317 | ||
3318 | int | |
3319 | main (int argc, char *argv[]) | |
3320 | { | |
3321 | volatile struct gdb_exception exception; | |
3322 | ||
3323 | TRY_CATCH (exception, RETURN_MASK_ALL) | |
3324 | { | |
3325 | captured_main (argc, argv); | |
3326 | } | |
3327 | ||
3328 | /* captured_main should never return. */ | |
3329 | gdb_assert (exception.reason < 0); | |
3330 | ||
3331 | if (exception.reason == RETURN_ERROR) | |
3332 | { | |
3333 | fflush (stdout); | |
3334 | fprintf (stderr, "%s\n", exception.message); | |
3335 | fprintf (stderr, "Exiting\n"); | |
3336 | exit_code = 1; | |
3337 | } | |
3338 | ||
3339 | exit (exit_code); | |
3340 | } | |
3341 | ||
d708bcd1 PA |
3342 | /* Skip PACKET until the next semi-colon (or end of string). */ |
3343 | ||
3344 | static void | |
3345 | skip_to_semicolon (char **packet) | |
3346 | { | |
3347 | while (**packet != '\0' && **packet != ';') | |
3348 | (*packet)++; | |
3349 | } | |
3350 | ||
802e8e6d PA |
3351 | /* Process options coming from Z packets for a breakpoint. PACKET is |
3352 | the packet buffer. *PACKET is updated to point to the first char | |
3353 | after the last processed option. */ | |
9f3a5c85 LM |
3354 | |
3355 | static void | |
802e8e6d | 3356 | process_point_options (struct breakpoint *bp, char **packet) |
9f3a5c85 LM |
3357 | { |
3358 | char *dataptr = *packet; | |
d3ce09f5 | 3359 | int persist; |
9f3a5c85 LM |
3360 | |
3361 | /* Check if data has the correct format. */ | |
3362 | if (*dataptr != ';') | |
3363 | return; | |
3364 | ||
3365 | dataptr++; | |
3366 | ||
3367 | while (*dataptr) | |
3368 | { | |
d3ce09f5 SS |
3369 | if (*dataptr == ';') |
3370 | ++dataptr; | |
3371 | ||
3372 | if (*dataptr == 'X') | |
9f3a5c85 | 3373 | { |
d3ce09f5 | 3374 | /* Conditional expression. */ |
d171ca78 | 3375 | if (debug_threads) |
87ce2a04 | 3376 | debug_printf ("Found breakpoint condition.\n"); |
802e8e6d | 3377 | if (!add_breakpoint_condition (bp, &dataptr)) |
d708bcd1 | 3378 | skip_to_semicolon (&dataptr); |
d3ce09f5 SS |
3379 | } |
3380 | else if (strncmp (dataptr, "cmds:", strlen ("cmds:")) == 0) | |
3381 | { | |
3382 | dataptr += strlen ("cmds:"); | |
3383 | if (debug_threads) | |
87ce2a04 | 3384 | debug_printf ("Found breakpoint commands %s.\n", dataptr); |
d3ce09f5 SS |
3385 | persist = (*dataptr == '1'); |
3386 | dataptr += 2; | |
802e8e6d | 3387 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
d708bcd1 | 3388 | skip_to_semicolon (&dataptr); |
d3ce09f5 SS |
3389 | } |
3390 | else | |
3391 | { | |
d3ce09f5 SS |
3392 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
3393 | *dataptr); | |
78a99e91 | 3394 | /* Skip tokens until we find one that we recognize. */ |
d708bcd1 | 3395 | skip_to_semicolon (&dataptr); |
9f3a5c85 | 3396 | } |
9f3a5c85 LM |
3397 | } |
3398 | *packet = dataptr; | |
3399 | } | |
3400 | ||
bd99dc85 PA |
3401 | /* Event loop callback that handles a serial event. The first byte in |
3402 | the serial buffer gets us here. We expect characters to arrive at | |
3403 | a brisk pace, so we read the rest of the packet with a blocking | |
3404 | getpkt call. */ | |
01f9e8fa | 3405 | |
8336d594 | 3406 | static int |
bd99dc85 PA |
3407 | process_serial_event (void) |
3408 | { | |
3409 | char ch; | |
3410 | int i = 0; | |
3411 | int signal; | |
3412 | unsigned int len; | |
764880b7 | 3413 | int res; |
bd99dc85 | 3414 | CORE_ADDR mem_addr; |
95954743 | 3415 | int pid; |
bd99dc85 PA |
3416 | unsigned char sig; |
3417 | int packet_len; | |
3418 | int new_packet_len = -1; | |
3419 | ||
3420 | /* Used to decide when gdbserver should exit in | |
3421 | multi-mode/remote. */ | |
3422 | static int have_ran = 0; | |
3423 | ||
3424 | if (!have_ran) | |
3425 | have_ran = target_running (); | |
3426 | ||
3427 | disable_async_io (); | |
3428 | ||
3429 | response_needed = 0; | |
3430 | packet_len = getpkt (own_buf); | |
3431 | if (packet_len <= 0) | |
3432 | { | |
bd99dc85 | 3433 | remote_close (); |
8336d594 PA |
3434 | /* Force an event loop break. */ |
3435 | return -1; | |
bd99dc85 PA |
3436 | } |
3437 | response_needed = 1; | |
3438 | ||
3439 | i = 0; | |
3440 | ch = own_buf[i++]; | |
3441 | switch (ch) | |
3442 | { | |
3443 | case 'q': | |
3444 | handle_query (own_buf, packet_len, &new_packet_len); | |
3445 | break; | |
3446 | case 'Q': | |
3447 | handle_general_set (own_buf); | |
3448 | break; | |
3449 | case 'D': | |
3450 | require_running (own_buf); | |
95954743 PA |
3451 | |
3452 | if (multi_process) | |
3453 | { | |
3454 | i++; /* skip ';' */ | |
3455 | pid = strtol (&own_buf[i], NULL, 16); | |
3456 | } | |
3457 | else | |
fbd5db48 | 3458 | pid = ptid_get_pid (current_ptid); |
95954743 | 3459 | |
d3ce09f5 | 3460 | if ((tracing && disconnected_tracing) || any_persistent_commands ()) |
8336d594 PA |
3461 | { |
3462 | struct thread_resume resume_info; | |
3463 | struct process_info *process = find_process_pid (pid); | |
3464 | ||
3465 | if (process == NULL) | |
3466 | { | |
3467 | write_enn (own_buf); | |
3468 | break; | |
3469 | } | |
3470 | ||
d3ce09f5 SS |
3471 | if (tracing && disconnected_tracing) |
3472 | fprintf (stderr, | |
3473 | "Disconnected tracing in effect, " | |
3474 | "leaving gdbserver attached to the process\n"); | |
3475 | ||
3476 | if (any_persistent_commands ()) | |
3477 | fprintf (stderr, | |
3478 | "Persistent commands are present, " | |
3479 | "leaving gdbserver attached to the process\n"); | |
8336d594 PA |
3480 | |
3481 | /* Make sure we're in non-stop/async mode, so we we can both | |
3482 | wait for an async socket accept, and handle async target | |
3483 | events simultaneously. There's also no point either in | |
3484 | having the target stop all threads, when we're going to | |
3485 | pass signals down without informing GDB. */ | |
3486 | if (!non_stop) | |
3487 | { | |
3488 | if (debug_threads) | |
87ce2a04 | 3489 | debug_printf ("Forcing non-stop mode\n"); |
8336d594 PA |
3490 | |
3491 | non_stop = 1; | |
3492 | start_non_stop (1); | |
3493 | } | |
3494 | ||
3495 | process->gdb_detached = 1; | |
3496 | ||
3497 | /* Detaching implicitly resumes all threads. */ | |
3498 | resume_info.thread = minus_one_ptid; | |
3499 | resume_info.kind = resume_continue; | |
3500 | resume_info.sig = 0; | |
3501 | (*the_target->resume) (&resume_info, 1); | |
3502 | ||
3503 | write_ok (own_buf); | |
3504 | break; /* from switch/case */ | |
3505 | } | |
3506 | ||
95954743 | 3507 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 3508 | stop_tracing (); |
95954743 | 3509 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
3510 | write_enn (own_buf); |
3511 | else | |
3512 | { | |
95954743 | 3513 | discard_queued_stop_replies (pid); |
bd99dc85 PA |
3514 | write_ok (own_buf); |
3515 | ||
3516 | if (extended_protocol) | |
c906108c | 3517 | { |
bd99dc85 PA |
3518 | /* Treat this like a normal program exit. */ |
3519 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3520 | last_status.value.integer = 0; | |
95954743 | 3521 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 3522 | |
0bfdf32f | 3523 | current_thread = NULL; |
bd99dc85 PA |
3524 | } |
3525 | else | |
3526 | { | |
3527 | putpkt (own_buf); | |
3528 | remote_close (); | |
3529 | ||
3530 | /* If we are attached, then we can exit. Otherwise, we | |
3531 | need to hang around doing nothing, until the child is | |
3532 | gone. */ | |
71f55dd8 | 3533 | join_inferior (pid); |
bd99dc85 PA |
3534 | exit (0); |
3535 | } | |
3536 | } | |
3537 | break; | |
3538 | case '!': | |
3539 | extended_protocol = 1; | |
3540 | write_ok (own_buf); | |
3541 | break; | |
3542 | case '?': | |
3543 | handle_status (own_buf); | |
3544 | break; | |
3545 | case 'H': | |
3546 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
3547 | { | |
95954743 PA |
3548 | ptid_t gdb_id, thread_id; |
3549 | int pid; | |
bd99dc85 PA |
3550 | |
3551 | require_running (own_buf); | |
95954743 PA |
3552 | |
3553 | gdb_id = read_ptid (&own_buf[2], NULL); | |
3554 | ||
3555 | pid = ptid_get_pid (gdb_id); | |
3556 | ||
3557 | if (ptid_equal (gdb_id, null_ptid) | |
3558 | || ptid_equal (gdb_id, minus_one_ptid)) | |
3559 | thread_id = null_ptid; | |
3560 | else if (pid != 0 | |
3561 | && ptid_equal (pid_to_ptid (pid), | |
3562 | gdb_id)) | |
3563 | { | |
3564 | struct thread_info *thread = | |
3565 | (struct thread_info *) find_inferior (&all_threads, | |
3566 | first_thread_of, | |
3567 | &pid); | |
3568 | if (!thread) | |
3569 | { | |
3570 | write_enn (own_buf); | |
3571 | break; | |
3572 | } | |
3573 | ||
80894984 | 3574 | thread_id = thread->entry.id; |
95954743 | 3575 | } |
bd99dc85 PA |
3576 | else |
3577 | { | |
3578 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 3579 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3580 | { |
a06660f7 | 3581 | write_enn (own_buf); |
c906108c SS |
3582 | break; |
3583 | } | |
c906108c SS |
3584 | } |
3585 | ||
bd99dc85 | 3586 | if (own_buf[1] == 'g') |
c906108c | 3587 | { |
95954743 | 3588 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3589 | { |
bd99dc85 PA |
3590 | /* GDB is telling us to choose any thread. Check if |
3591 | the currently selected thread is still valid. If | |
3592 | it is not, select the first available. */ | |
3593 | struct thread_info *thread = | |
3594 | (struct thread_info *) find_inferior_id (&all_threads, | |
3595 | general_thread); | |
3596 | if (thread == NULL) | |
649ebbca DE |
3597 | { |
3598 | thread = get_first_thread (); | |
3599 | thread_id = thread->entry.id; | |
3600 | } | |
c906108c | 3601 | } |
bd99dc85 PA |
3602 | |
3603 | general_thread = thread_id; | |
0bfdf32f | 3604 | set_desired_thread (1); |
c906108c | 3605 | } |
bd99dc85 PA |
3606 | else if (own_buf[1] == 'c') |
3607 | cont_thread = thread_id; | |
c906108c | 3608 | |
bd99dc85 PA |
3609 | write_ok (own_buf); |
3610 | } | |
3611 | else | |
3612 | { | |
3613 | /* Silently ignore it so that gdb can extend the protocol | |
3614 | without compatibility headaches. */ | |
3615 | own_buf[0] = '\0'; | |
2d717e4f | 3616 | } |
bd99dc85 PA |
3617 | break; |
3618 | case 'g': | |
219f2f23 PA |
3619 | require_running (own_buf); |
3620 | if (current_traceframe >= 0) | |
3621 | { | |
3aee8918 PA |
3622 | struct regcache *regcache |
3623 | = new_register_cache (current_target_desc ()); | |
219f2f23 PA |
3624 | |
3625 | if (fetch_traceframe_registers (current_traceframe, | |
3626 | regcache, -1) == 0) | |
3627 | registers_to_string (regcache, own_buf); | |
3628 | else | |
3629 | write_enn (own_buf); | |
3630 | free_register_cache (regcache); | |
3631 | } | |
3632 | else | |
3633 | { | |
3634 | struct regcache *regcache; | |
3635 | ||
0bfdf32f GB |
3636 | set_desired_thread (1); |
3637 | regcache = get_thread_regcache (current_thread, 1); | |
219f2f23 PA |
3638 | registers_to_string (regcache, own_buf); |
3639 | } | |
bd99dc85 PA |
3640 | break; |
3641 | case 'G': | |
219f2f23 PA |
3642 | require_running (own_buf); |
3643 | if (current_traceframe >= 0) | |
3644 | write_enn (own_buf); | |
3645 | else | |
3646 | { | |
442ea881 PA |
3647 | struct regcache *regcache; |
3648 | ||
0bfdf32f GB |
3649 | set_desired_thread (1); |
3650 | regcache = get_thread_regcache (current_thread, 1); | |
442ea881 PA |
3651 | registers_from_string (regcache, &own_buf[1]); |
3652 | write_ok (own_buf); | |
3653 | } | |
bd99dc85 PA |
3654 | break; |
3655 | case 'm': | |
3656 | require_running (own_buf); | |
3657 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
764880b7 PA |
3658 | res = gdb_read_memory (mem_addr, mem_buf, len); |
3659 | if (res < 0) | |
bd99dc85 | 3660 | write_enn (own_buf); |
764880b7 | 3661 | else |
e9371aff | 3662 | bin2hex (mem_buf, own_buf, res); |
bd99dc85 PA |
3663 | break; |
3664 | case 'M': | |
3665 | require_running (own_buf); | |
fa593d66 | 3666 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 3667 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
3668 | write_ok (own_buf); |
3669 | else | |
3670 | write_enn (own_buf); | |
3671 | break; | |
3672 | case 'X': | |
3673 | require_running (own_buf); | |
3674 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 3675 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 3676 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
3677 | write_enn (own_buf); |
3678 | else | |
3679 | write_ok (own_buf); | |
3680 | break; | |
3681 | case 'C': | |
3682 | require_running (own_buf); | |
a7191e8b | 3683 | hex2bin (own_buf + 1, &sig, 1); |
2ea28649 PA |
3684 | if (gdb_signal_to_host_p (sig)) |
3685 | signal = gdb_signal_to_host (sig); | |
bd99dc85 PA |
3686 | else |
3687 | signal = 0; | |
3688 | myresume (own_buf, 0, signal); | |
3689 | break; | |
3690 | case 'S': | |
3691 | require_running (own_buf); | |
a7191e8b | 3692 | hex2bin (own_buf + 1, &sig, 1); |
2ea28649 PA |
3693 | if (gdb_signal_to_host_p (sig)) |
3694 | signal = gdb_signal_to_host (sig); | |
bd99dc85 PA |
3695 | else |
3696 | signal = 0; | |
3697 | myresume (own_buf, 1, signal); | |
3698 | break; | |
3699 | case 'c': | |
3700 | require_running (own_buf); | |
3701 | signal = 0; | |
3702 | myresume (own_buf, 0, signal); | |
3703 | break; | |
3704 | case 's': | |
3705 | require_running (own_buf); | |
3706 | signal = 0; | |
3707 | myresume (own_buf, 1, signal); | |
3708 | break; | |
c6314022 AR |
3709 | case 'Z': /* insert_ ... */ |
3710 | /* Fallthrough. */ | |
3711 | case 'z': /* remove_ ... */ | |
bd99dc85 | 3712 | { |
bd99dc85 | 3713 | char *dataptr; |
aca22551 PA |
3714 | ULONGEST addr; |
3715 | int len; | |
bd99dc85 | 3716 | char type = own_buf[1]; |
c6314022 | 3717 | int res; |
d993e290 | 3718 | const int insert = ch == 'Z'; |
aca22551 PA |
3719 | char *p = &own_buf[3]; |
3720 | ||
3721 | p = unpack_varlen_hex (p, &addr); | |
3722 | len = strtol (p + 1, &dataptr, 16); | |
c6314022 | 3723 | |
802e8e6d | 3724 | if (insert) |
d993e290 | 3725 | { |
802e8e6d PA |
3726 | struct breakpoint *bp; |
3727 | ||
3728 | bp = set_gdb_breakpoint (type, addr, len, &res); | |
3729 | if (bp != NULL) | |
9f3a5c85 | 3730 | { |
802e8e6d PA |
3731 | res = 0; |
3732 | ||
3733 | /* GDB may have sent us a list of *point parameters to | |
3734 | be evaluated on the target's side. Read such list | |
3735 | here. If we already have a list of parameters, GDB | |
3736 | is telling us to drop that list and use this one | |
3737 | instead. */ | |
0a261ed8 | 3738 | clear_breakpoint_conditions_and_commands (bp); |
802e8e6d | 3739 | process_point_options (bp, &dataptr); |
9f3a5c85 | 3740 | } |
d993e290 | 3741 | } |
802e8e6d PA |
3742 | else |
3743 | res = delete_gdb_breakpoint (type, addr, len); | |
bd99dc85 | 3744 | |
c6314022 AR |
3745 | if (res == 0) |
3746 | write_ok (own_buf); | |
3747 | else if (res == 1) | |
3748 | /* Unsupported. */ | |
3749 | own_buf[0] = '\0'; | |
bd99dc85 | 3750 | else |
c6314022 | 3751 | write_enn (own_buf); |
bd99dc85 PA |
3752 | break; |
3753 | } | |
3754 | case 'k': | |
3755 | response_needed = 0; | |
3756 | if (!target_running ()) | |
95954743 PA |
3757 | /* The packet we received doesn't make sense - but we can't |
3758 | reply to it, either. */ | |
8336d594 | 3759 | return 0; |
c906108c | 3760 | |
95954743 PA |
3761 | fprintf (stderr, "Killing all inferiors\n"); |
3762 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 3763 | |
bd99dc85 PA |
3764 | /* When using the extended protocol, we wait with no program |
3765 | running. The traditional protocol will exit instead. */ | |
3766 | if (extended_protocol) | |
3767 | { | |
3768 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 3769 | last_status.value.sig = GDB_SIGNAL_KILL; |
8336d594 | 3770 | return 0; |
bd99dc85 PA |
3771 | } |
3772 | else | |
8336d594 PA |
3773 | exit (0); |
3774 | ||
bd99dc85 PA |
3775 | case 'T': |
3776 | { | |
95954743 | 3777 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
3778 | |
3779 | require_running (own_buf); | |
95954743 PA |
3780 | |
3781 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 3782 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 3783 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
3784 | { |
3785 | write_enn (own_buf); | |
3786 | break; | |
3787 | } | |
3788 | ||
3789 | if (mythread_alive (thread_id)) | |
3790 | write_ok (own_buf); | |
3791 | else | |
3792 | write_enn (own_buf); | |
3793 | } | |
3794 | break; | |
3795 | case 'R': | |
3796 | response_needed = 0; | |
3797 | ||
3798 | /* Restarting the inferior is only supported in the extended | |
3799 | protocol. */ | |
3800 | if (extended_protocol) | |
3801 | { | |
3802 | if (target_running ()) | |
95954743 PA |
3803 | for_each_inferior (&all_processes, |
3804 | kill_inferior_callback); | |
bd99dc85 PA |
3805 | fprintf (stderr, "GDBserver restarting\n"); |
3806 | ||
3807 | /* Wait till we are at 1st instruction in prog. */ | |
3808 | if (program_argv != NULL) | |
3809 | start_inferior (program_argv); | |
3810 | else | |
3811 | { | |
3812 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 3813 | last_status.value.sig = GDB_SIGNAL_KILL; |
bd99dc85 | 3814 | } |
8336d594 | 3815 | return 0; |
c906108c SS |
3816 | } |
3817 | else | |
3818 | { | |
bd99dc85 PA |
3819 | /* It is a request we don't understand. Respond with an |
3820 | empty packet so that gdb knows that we don't support this | |
3821 | request. */ | |
3822 | own_buf[0] = '\0'; | |
3823 | break; | |
3824 | } | |
3825 | case 'v': | |
3826 | /* Extended (long) request. */ | |
3827 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
3828 | break; | |
3829 | ||
3830 | default: | |
3831 | /* It is a request we don't understand. Respond with an empty | |
3832 | packet so that gdb knows that we don't support this | |
3833 | request. */ | |
3834 | own_buf[0] = '\0'; | |
3835 | break; | |
3836 | } | |
3837 | ||
3838 | if (new_packet_len != -1) | |
3839 | putpkt_binary (own_buf, new_packet_len); | |
3840 | else | |
3841 | putpkt (own_buf); | |
3842 | ||
3843 | response_needed = 0; | |
3844 | ||
3845 | if (!extended_protocol && have_ran && !target_running ()) | |
3846 | { | |
3847 | /* In non-stop, defer exiting until GDB had a chance to query | |
3848 | the whole vStopped list (until it gets an OK). */ | |
14a00470 | 3849 | if (QUEUE_is_empty (notif_event_p, notif_stop.queue)) |
bd99dc85 | 3850 | { |
1a3d890b PA |
3851 | /* Be transparent when GDB is connected through stdio -- no |
3852 | need to spam GDB's console. */ | |
3853 | if (!remote_connection_is_stdio ()) | |
3854 | fprintf (stderr, "GDBserver exiting\n"); | |
c906108c | 3855 | remote_close (); |
bd99dc85 | 3856 | exit (0); |
c906108c SS |
3857 | } |
3858 | } | |
8336d594 PA |
3859 | |
3860 | if (exit_requested) | |
3861 | return -1; | |
3862 | ||
3863 | return 0; | |
c906108c | 3864 | } |
bd99dc85 PA |
3865 | |
3866 | /* Event-loop callback for serial events. */ | |
3867 | ||
8336d594 | 3868 | int |
bd99dc85 PA |
3869 | handle_serial_event (int err, gdb_client_data client_data) |
3870 | { | |
3871 | if (debug_threads) | |
87ce2a04 | 3872 | debug_printf ("handling possible serial event\n"); |
bd99dc85 PA |
3873 | |
3874 | /* Really handle it. */ | |
8336d594 PA |
3875 | if (process_serial_event () < 0) |
3876 | return -1; | |
bd99dc85 | 3877 | |
0bfdf32f | 3878 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 3879 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 3880 | set_desired_thread (1); |
8336d594 PA |
3881 | |
3882 | return 0; | |
bd99dc85 PA |
3883 | } |
3884 | ||
3885 | /* Event-loop callback for target events. */ | |
3886 | ||
8336d594 | 3887 | int |
bd99dc85 PA |
3888 | handle_target_event (int err, gdb_client_data client_data) |
3889 | { | |
3890 | if (debug_threads) | |
87ce2a04 | 3891 | debug_printf ("handling possible target event\n"); |
bd99dc85 | 3892 | |
95954743 PA |
3893 | last_ptid = mywait (minus_one_ptid, &last_status, |
3894 | TARGET_WNOHANG, 1); | |
bd99dc85 | 3895 | |
fa96cb38 PA |
3896 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
3897 | { | |
3898 | /* No RSP support for this yet. */ | |
3899 | } | |
3900 | else if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
bd99dc85 | 3901 | { |
8336d594 PA |
3902 | int pid = ptid_get_pid (last_ptid); |
3903 | struct process_info *process = find_process_pid (pid); | |
3904 | int forward_event = !gdb_connected () || process->gdb_detached; | |
3905 | ||
3906 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
3907 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
3908 | { |
3909 | mark_breakpoints_out (process); | |
3910 | mourn_inferior (process); | |
3911 | } | |
ce1a5b52 | 3912 | else |
d20a8ad9 PA |
3913 | { |
3914 | /* We're reporting this thread as stopped. Update its | |
3915 | "want-stopped" state to what the client wants, until it | |
3916 | gets a new resume action. */ | |
0bfdf32f GB |
3917 | current_thread->last_resume_kind = resume_stop; |
3918 | current_thread->last_status = last_status; | |
d20a8ad9 | 3919 | } |
8336d594 PA |
3920 | |
3921 | if (forward_event) | |
3922 | { | |
3923 | if (!target_running ()) | |
3924 | { | |
3925 | /* The last process exited. We're done. */ | |
3926 | exit (0); | |
3927 | } | |
3928 | ||
3929 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
3930 | { | |
3931 | /* A thread stopped with a signal, but gdb isn't | |
3932 | connected to handle it. Pass it down to the | |
3933 | inferior, as if it wasn't being traced. */ | |
3934 | struct thread_resume resume_info; | |
3935 | ||
3936 | if (debug_threads) | |
87ce2a04 DE |
3937 | debug_printf ("GDB not connected; forwarding event %d for" |
3938 | " [%s]\n", | |
3939 | (int) last_status.kind, | |
3940 | target_pid_to_str (last_ptid)); | |
8336d594 PA |
3941 | |
3942 | resume_info.thread = last_ptid; | |
3943 | resume_info.kind = resume_continue; | |
2ea28649 | 3944 | resume_info.sig = gdb_signal_to_host (last_status.value.sig); |
8336d594 PA |
3945 | (*the_target->resume) (&resume_info, 1); |
3946 | } | |
3947 | else if (debug_threads) | |
87ce2a04 DE |
3948 | debug_printf ("GDB not connected; ignoring event %d for [%s]\n", |
3949 | (int) last_status.kind, | |
3950 | target_pid_to_str (last_ptid)); | |
8336d594 PA |
3951 | } |
3952 | else | |
3953 | { | |
14a00470 YQ |
3954 | struct vstop_notif *vstop_notif |
3955 | = xmalloc (sizeof (struct vstop_notif)); | |
3956 | ||
3957 | vstop_notif->status = last_status; | |
3958 | vstop_notif->ptid = last_ptid; | |
3959 | /* Push Stop notification. */ | |
3960 | notif_push (¬if_stop, | |
3961 | (struct notif_event *) vstop_notif); | |
8336d594 | 3962 | } |
bd99dc85 PA |
3963 | } |
3964 | ||
0bfdf32f | 3965 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 3966 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 3967 | set_desired_thread (1); |
8336d594 PA |
3968 | |
3969 | return 0; | |
bd99dc85 | 3970 | } |