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c906108c | 1 | /* Main code for remote server for GDB. |
28e7fd62 | 2 | Copyright (C) 1989-2013 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" |
c906108c | 23 | |
68070c10 | 24 | #if HAVE_UNISTD_H |
a9fa9f7d | 25 | #include <unistd.h> |
68070c10 PA |
26 | #endif |
27 | #if HAVE_SIGNAL_H | |
a9fa9f7d | 28 | #include <signal.h> |
68070c10 | 29 | #endif |
8bdce1ff | 30 | #include "gdb_wait.h" |
9accd112 | 31 | #include "btrace-common.h" |
a9fa9f7d | 32 | |
122f36ef PA |
33 | /* The thread set with an `Hc' packet. `Hc' is deprecated in favor of |
34 | `vCont'. Note the multi-process extensions made `vCont' a | |
35 | requirement, so `Hc pPID.TID' is pretty much undefined. So | |
36 | CONT_THREAD can be null_ptid for no `Hc' thread, minus_one_ptid for | |
37 | resuming all threads of the process (again, `Hc' isn't used for | |
38 | multi-process), or a specific thread ptid_t. | |
39 | ||
40 | We also set this when handling a single-thread `vCont' resume, as | |
41 | some places in the backends check it to know when (and for which | |
42 | thread) single-thread scheduler-locking is in effect. */ | |
95954743 | 43 | ptid_t cont_thread; |
122f36ef PA |
44 | |
45 | /* The thread set with an `Hg' packet. */ | |
95954743 | 46 | ptid_t general_thread; |
5b1c542e | 47 | |
0d62e5e8 DJ |
48 | int server_waiting; |
49 | ||
2d717e4f | 50 | static int extended_protocol; |
2d717e4f DJ |
51 | static int response_needed; |
52 | static int exit_requested; | |
53 | ||
03f2bd59 JK |
54 | /* --once: Exit after the first connection has closed. */ |
55 | int run_once; | |
56 | ||
95954743 | 57 | int multi_process; |
bd99dc85 PA |
58 | int non_stop; |
59 | ||
03583c20 UW |
60 | /* Whether we should attempt to disable the operating system's address |
61 | space randomization feature before starting an inferior. */ | |
62 | int disable_randomization = 1; | |
63 | ||
ccd213ac | 64 | static char **program_argv, **wrapper_argv; |
2d717e4f | 65 | |
c74d0ad8 DJ |
66 | /* Enable miscellaneous debugging output. The name is historical - it |
67 | was originally used to debug LinuxThreads support. */ | |
68 | int debug_threads; | |
69 | ||
aa5ca48f DE |
70 | /* Enable debugging of h/w breakpoint/watchpoint support. */ |
71 | int debug_hw_points; | |
72 | ||
a493e3e2 PA |
73 | int pass_signals[GDB_SIGNAL_LAST]; |
74 | int program_signals[GDB_SIGNAL_LAST]; | |
9b224c5e | 75 | int program_signals_p; |
89be2091 | 76 | |
c906108c | 77 | jmp_buf toplevel; |
c906108c | 78 | |
9b4b61c8 UW |
79 | const char *gdbserver_xmltarget; |
80 | ||
a9fa9f7d DJ |
81 | /* The PID of the originally created or attached inferior. Used to |
82 | send signals to the process when GDB sends us an asynchronous interrupt | |
83 | (user hitting Control-C in the client), and to wait for the child to exit | |
84 | when no longer debugging it. */ | |
85 | ||
a1928bad | 86 | unsigned long signal_pid; |
a9fa9f7d | 87 | |
290fadea RS |
88 | #ifdef SIGTTOU |
89 | /* A file descriptor for the controlling terminal. */ | |
90 | int terminal_fd; | |
91 | ||
92 | /* TERMINAL_FD's original foreground group. */ | |
93 | pid_t old_foreground_pgrp; | |
94 | ||
95 | /* Hand back terminal ownership to the original foreground group. */ | |
96 | ||
97 | static void | |
98 | restore_old_foreground_pgrp (void) | |
99 | { | |
100 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
101 | } | |
102 | #endif | |
103 | ||
ec56be1b PA |
104 | /* Set if you want to disable optional thread related packets support |
105 | in gdbserver, for the sake of testing GDB against stubs that don't | |
106 | support them. */ | |
107 | int disable_packet_vCont; | |
108 | int disable_packet_Tthread; | |
109 | int disable_packet_qC; | |
110 | int disable_packet_qfThreadInfo; | |
111 | ||
5b1c542e PA |
112 | /* Last status reported to GDB. */ |
113 | static struct target_waitstatus last_status; | |
95954743 | 114 | static ptid_t last_ptid; |
5b1c542e | 115 | |
bd99dc85 PA |
116 | static char *own_buf; |
117 | static unsigned char *mem_buf; | |
118 | ||
14a00470 YQ |
119 | /* A sub-class of 'struct notif_event' for stop, holding information |
120 | relative to a single stop reply. We keep a queue of these to | |
121 | push to GDB in non-stop mode. */ | |
122 | ||
bd99dc85 PA |
123 | struct vstop_notif |
124 | { | |
14a00470 | 125 | struct notif_event base; |
bd99dc85 PA |
126 | |
127 | /* Thread or process that got the event. */ | |
95954743 | 128 | ptid_t ptid; |
bd99dc85 PA |
129 | |
130 | /* Event info. */ | |
131 | struct target_waitstatus status; | |
132 | }; | |
133 | ||
14a00470 | 134 | DEFINE_QUEUE_P (notif_event_p); |
bd99dc85 PA |
135 | |
136 | /* Put a stop reply to the stop reply queue. */ | |
137 | ||
138 | static void | |
95954743 | 139 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 140 | { |
14a00470 | 141 | struct vstop_notif *new_notif = xmalloc (sizeof (*new_notif)); |
bd99dc85 | 142 | |
bd99dc85 PA |
143 | new_notif->ptid = ptid; |
144 | new_notif->status = *status; | |
145 | ||
14a00470 | 146 | notif_event_enque (¬if_stop, (struct notif_event *) new_notif); |
bd99dc85 PA |
147 | } |
148 | ||
14a00470 YQ |
149 | static int |
150 | remove_all_on_match_pid (QUEUE (notif_event_p) *q, | |
151 | QUEUE_ITER (notif_event_p) *iter, | |
152 | struct notif_event *event, | |
153 | void *data) | |
bd99dc85 | 154 | { |
14a00470 | 155 | int *pid = data; |
d20a8ad9 | 156 | |
14a00470 YQ |
157 | if (*pid == -1 |
158 | || ptid_get_pid (((struct vstop_notif *) event)->ptid) == *pid) | |
bd99dc85 | 159 | { |
14a00470 YQ |
160 | if (q->free_func != NULL) |
161 | q->free_func (event); | |
162 | ||
163 | QUEUE_remove_elem (notif_event_p, q, iter); | |
bd99dc85 | 164 | } |
14a00470 YQ |
165 | |
166 | return 1; | |
bd99dc85 PA |
167 | } |
168 | ||
95954743 PA |
169 | /* Get rid of the currently pending stop replies for PID. If PID is |
170 | -1, then apply to all processes. */ | |
bd99dc85 PA |
171 | |
172 | static void | |
95954743 | 173 | discard_queued_stop_replies (int pid) |
bd99dc85 | 174 | { |
14a00470 YQ |
175 | QUEUE_iterate (notif_event_p, notif_stop.queue, |
176 | remove_all_on_match_pid, &pid); | |
bd99dc85 PA |
177 | } |
178 | ||
bd99dc85 | 179 | static void |
14a00470 | 180 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 181 | { |
14a00470 YQ |
182 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
183 | ||
184 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
185 | } |
186 | ||
14a00470 YQ |
187 | struct notif_server notif_stop = |
188 | { | |
189 | "vStopped", "Stop", NULL, vstop_notif_reply, | |
190 | }; | |
191 | ||
2d717e4f DJ |
192 | static int |
193 | target_running (void) | |
194 | { | |
195 | return all_threads.head != NULL; | |
196 | } | |
197 | ||
fc620387 | 198 | static int |
5b1c542e | 199 | start_inferior (char **argv) |
c906108c | 200 | { |
ccd213ac | 201 | char **new_argv = argv; |
2d717e4f | 202 | |
ccd213ac DJ |
203 | if (wrapper_argv != NULL) |
204 | { | |
205 | int i, count = 1; | |
206 | ||
207 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
208 | count++; | |
209 | for (i = 0; argv[i] != NULL; i++) | |
210 | count++; | |
211 | new_argv = alloca (sizeof (char *) * count); | |
212 | count = 0; | |
213 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
214 | new_argv[count++] = wrapper_argv[i]; | |
215 | for (i = 0; argv[i] != NULL; i++) | |
216 | new_argv[count++] = argv[i]; | |
217 | new_argv[count] = NULL; | |
218 | } | |
219 | ||
65730243 DE |
220 | if (debug_threads) |
221 | { | |
222 | int i; | |
223 | for (i = 0; new_argv[i]; ++i) | |
224 | fprintf (stderr, "new_argv[%d] = \"%s\"\n", i, new_argv[i]); | |
225 | fflush (stderr); | |
226 | } | |
227 | ||
b80864fb | 228 | #ifdef SIGTTOU |
a9fa9f7d DJ |
229 | signal (SIGTTOU, SIG_DFL); |
230 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 231 | #endif |
a9fa9f7d | 232 | |
122f36ef PA |
233 | /* Clear this so the backend doesn't get confused, thinking |
234 | CONT_THREAD died, and it needs to resume all threads. */ | |
235 | cont_thread = null_ptid; | |
236 | ||
ccd213ac | 237 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 238 | |
c588c53c MS |
239 | /* FIXME: we don't actually know at this point that the create |
240 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 241 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 242 | signal_pid); |
b80864fb | 243 | fflush (stderr); |
a9fa9f7d | 244 | |
b80864fb | 245 | #ifdef SIGTTOU |
a9fa9f7d DJ |
246 | signal (SIGTTOU, SIG_IGN); |
247 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
248 | terminal_fd = fileno (stderr); |
249 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
250 | tcsetpgrp (terminal_fd, signal_pid); | |
251 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 252 | #endif |
c906108c | 253 | |
ccd213ac DJ |
254 | if (wrapper_argv != NULL) |
255 | { | |
256 | struct thread_resume resume_info; | |
ccd213ac | 257 | |
95954743 | 258 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 259 | resume_info.kind = resume_continue; |
ccd213ac | 260 | resume_info.sig = 0; |
ccd213ac | 261 | |
06db92f0 | 262 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 263 | |
5b1c542e PA |
264 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
265 | return signal_pid; | |
ccd213ac DJ |
266 | |
267 | do | |
268 | { | |
2bd7c093 | 269 | (*the_target->resume) (&resume_info, 1); |
ccd213ac | 270 | |
06db92f0 | 271 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e PA |
272 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
273 | return signal_pid; | |
d20a8ad9 PA |
274 | |
275 | current_inferior->last_resume_kind = resume_stop; | |
276 | current_inferior->last_status = last_status; | |
ccd213ac | 277 | } |
a493e3e2 | 278 | while (last_status.value.sig != GDB_SIGNAL_TRAP); |
ccd213ac | 279 | |
5b1c542e | 280 | return signal_pid; |
ccd213ac DJ |
281 | } |
282 | ||
5b1c542e PA |
283 | /* Wait till we are at 1st instruction in program, return new pid |
284 | (assuming success). */ | |
95954743 | 285 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 286 | |
d20a8ad9 PA |
287 | if (last_status.kind != TARGET_WAITKIND_EXITED |
288 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
289 | { | |
290 | current_inferior->last_resume_kind = resume_stop; | |
291 | current_inferior->last_status = last_status; | |
292 | } | |
293 | ||
5b1c542e | 294 | return signal_pid; |
c906108c SS |
295 | } |
296 | ||
45b7b345 | 297 | static int |
5b1c542e | 298 | attach_inferior (int pid) |
45b7b345 DJ |
299 | { |
300 | /* myattach should return -1 if attaching is unsupported, | |
301 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 302 | |
45b7b345 DJ |
303 | if (myattach (pid) != 0) |
304 | return -1; | |
305 | ||
6910d122 | 306 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 307 | fflush (stderr); |
6910d122 | 308 | |
a9fa9f7d DJ |
309 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
310 | attach function, so that it can be the main thread instead of | |
311 | whichever we were told to attach to. */ | |
312 | signal_pid = pid; | |
313 | ||
7d5d4e98 PA |
314 | /* Clear this so the backend doesn't get confused, thinking |
315 | CONT_THREAD died, and it needs to resume all threads. */ | |
316 | cont_thread = null_ptid; | |
317 | ||
bd99dc85 PA |
318 | if (!non_stop) |
319 | { | |
95954743 | 320 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
321 | |
322 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
323 | process using the "attach" command, but this is different; it's | |
324 | just using "target remote". Pretend it's just starting up. */ | |
325 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 PA |
326 | && last_status.value.sig == GDB_SIGNAL_STOP) |
327 | last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 PA |
328 | |
329 | current_inferior->last_resume_kind = resume_stop; | |
330 | current_inferior->last_status = last_status; | |
bd99dc85 | 331 | } |
9db87ebd | 332 | |
45b7b345 DJ |
333 | return 0; |
334 | } | |
335 | ||
c906108c | 336 | extern int remote_debug; |
ce3a066d | 337 | |
0876f84a DJ |
338 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
339 | or -1 otherwise. */ | |
340 | ||
341 | static int | |
d08aafef | 342 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 343 | { |
d08aafef PA |
344 | /* After the read marker and annex, qXfer looks like a |
345 | traditional 'm' packet. */ | |
346 | decode_m_packet (buf, ofs, len); | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
351 | static int | |
352 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
353 | { | |
354 | /* Extract and NUL-terminate the object. */ | |
355 | *object = buf; | |
356 | while (*buf && *buf != ':') | |
357 | buf++; | |
358 | if (*buf == '\0') | |
359 | return -1; | |
360 | *buf++ = 0; | |
361 | ||
362 | /* Extract and NUL-terminate the read/write action. */ | |
363 | *rw = buf; | |
364 | while (*buf && *buf != ':') | |
365 | buf++; | |
366 | if (*buf == '\0') | |
367 | return -1; | |
368 | *buf++ = 0; | |
369 | ||
0876f84a DJ |
370 | /* Extract and NUL-terminate the annex. */ |
371 | *annex = buf; | |
372 | while (*buf && *buf != ':') | |
373 | buf++; | |
374 | if (*buf == '\0') | |
375 | return -1; | |
376 | *buf++ = 0; | |
377 | ||
d08aafef | 378 | *offset = buf; |
0876f84a DJ |
379 | return 0; |
380 | } | |
381 | ||
382 | /* Write the response to a successful qXfer read. Returns the | |
383 | length of the (binary) data stored in BUF, corresponding | |
384 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
385 | the first character of the response. */ | |
386 | static int | |
23181151 | 387 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
0876f84a DJ |
388 | { |
389 | int out_len; | |
390 | ||
391 | if (is_more) | |
392 | buf[0] = 'm'; | |
393 | else | |
394 | buf[0] = 'l'; | |
395 | ||
396 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, | |
397 | PBUFSIZ - 2) + 1; | |
398 | } | |
399 | ||
9accd112 MM |
400 | /* Handle btrace enabling. */ |
401 | ||
402 | static const char * | |
403 | handle_btrace_enable (struct thread_info *thread) | |
404 | { | |
405 | if (thread->btrace != NULL) | |
406 | return "E.Btrace already enabled."; | |
407 | ||
408 | thread->btrace = target_enable_btrace (thread->entry.id); | |
409 | if (thread->btrace == NULL) | |
410 | return "E.Could not enable btrace."; | |
411 | ||
412 | return NULL; | |
413 | } | |
414 | ||
415 | /* Handle btrace disabling. */ | |
416 | ||
417 | static const char * | |
418 | handle_btrace_disable (struct thread_info *thread) | |
419 | { | |
420 | ||
421 | if (thread->btrace == NULL) | |
422 | return "E.Branch tracing not enabled."; | |
423 | ||
424 | if (target_disable_btrace (thread->btrace) != 0) | |
425 | return "E.Could not disable branch tracing."; | |
426 | ||
427 | thread->btrace = NULL; | |
428 | return NULL; | |
429 | } | |
430 | ||
431 | /* Handle the "Qbtrace" packet. */ | |
432 | ||
433 | static int | |
434 | handle_btrace_general_set (char *own_buf) | |
435 | { | |
436 | struct thread_info *thread; | |
437 | const char *err; | |
438 | char *op; | |
439 | ||
440 | if (strncmp ("Qbtrace:", own_buf, strlen ("Qbtrace:")) != 0) | |
441 | return 0; | |
442 | ||
443 | op = own_buf + strlen ("Qbtrace:"); | |
444 | ||
445 | if (!target_supports_btrace ()) | |
446 | { | |
447 | strcpy (own_buf, "E.Target does not support branch tracing."); | |
448 | return -1; | |
449 | } | |
450 | ||
451 | if (ptid_equal (general_thread, null_ptid) | |
452 | || ptid_equal (general_thread, minus_one_ptid)) | |
453 | { | |
454 | strcpy (own_buf, "E.Must select a single thread."); | |
455 | return -1; | |
456 | } | |
457 | ||
458 | thread = find_thread_ptid (general_thread); | |
459 | if (thread == NULL) | |
460 | { | |
461 | strcpy (own_buf, "E.No such thread."); | |
462 | return -1; | |
463 | } | |
464 | ||
465 | err = NULL; | |
466 | ||
467 | if (strcmp (op, "bts") == 0) | |
468 | err = handle_btrace_enable (thread); | |
469 | else if (strcmp (op, "off") == 0) | |
470 | err = handle_btrace_disable (thread); | |
471 | else | |
472 | err = "E.Bad Qbtrace operation. Use bts or off."; | |
473 | ||
474 | if (err != 0) | |
475 | strcpy (own_buf, err); | |
476 | else | |
477 | write_ok (own_buf); | |
478 | ||
479 | return 1; | |
480 | } | |
481 | ||
89be2091 | 482 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
483 | |
484 | static void | |
89be2091 DJ |
485 | handle_general_set (char *own_buf) |
486 | { | |
487 | if (strncmp ("QPassSignals:", own_buf, strlen ("QPassSignals:")) == 0) | |
488 | { | |
a493e3e2 | 489 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
490 | const char *p = own_buf + strlen ("QPassSignals:"); |
491 | CORE_ADDR cursig; | |
492 | ||
493 | p = decode_address_to_semicolon (&cursig, p); | |
494 | for (i = 0; i < numsigs; i++) | |
495 | { | |
496 | if (i == cursig) | |
497 | { | |
498 | pass_signals[i] = 1; | |
499 | if (*p == '\0') | |
500 | /* Keep looping, to clear the remaining signals. */ | |
501 | cursig = -1; | |
502 | else | |
503 | p = decode_address_to_semicolon (&cursig, p); | |
504 | } | |
505 | else | |
506 | pass_signals[i] = 0; | |
507 | } | |
508 | strcpy (own_buf, "OK"); | |
509 | return; | |
510 | } | |
511 | ||
9b224c5e PA |
512 | if (strncmp ("QProgramSignals:", own_buf, strlen ("QProgramSignals:")) == 0) |
513 | { | |
a493e3e2 | 514 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
515 | const char *p = own_buf + strlen ("QProgramSignals:"); |
516 | CORE_ADDR cursig; | |
517 | ||
518 | program_signals_p = 1; | |
519 | ||
520 | p = decode_address_to_semicolon (&cursig, p); | |
521 | for (i = 0; i < numsigs; i++) | |
522 | { | |
523 | if (i == cursig) | |
524 | { | |
525 | program_signals[i] = 1; | |
526 | if (*p == '\0') | |
527 | /* Keep looping, to clear the remaining signals. */ | |
528 | cursig = -1; | |
529 | else | |
530 | p = decode_address_to_semicolon (&cursig, p); | |
531 | } | |
532 | else | |
533 | program_signals[i] = 0; | |
534 | } | |
535 | strcpy (own_buf, "OK"); | |
536 | return; | |
537 | } | |
538 | ||
a6f3e723 SL |
539 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
540 | { | |
541 | if (remote_debug) | |
542 | { | |
543 | fprintf (stderr, "[noack mode enabled]\n"); | |
544 | fflush (stderr); | |
545 | } | |
546 | ||
547 | noack_mode = 1; | |
548 | write_ok (own_buf); | |
549 | return; | |
550 | } | |
551 | ||
bd99dc85 PA |
552 | if (strncmp (own_buf, "QNonStop:", 9) == 0) |
553 | { | |
554 | char *mode = own_buf + 9; | |
555 | int req = -1; | |
556 | char *req_str; | |
557 | ||
558 | if (strcmp (mode, "0") == 0) | |
559 | req = 0; | |
560 | else if (strcmp (mode, "1") == 0) | |
561 | req = 1; | |
562 | else | |
563 | { | |
564 | /* We don't know what this mode is, so complain to | |
565 | GDB. */ | |
566 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
567 | own_buf); | |
568 | write_enn (own_buf); | |
569 | return; | |
570 | } | |
571 | ||
572 | req_str = req ? "non-stop" : "all-stop"; | |
573 | if (start_non_stop (req) != 0) | |
574 | { | |
575 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
576 | write_enn (own_buf); | |
577 | return; | |
578 | } | |
579 | ||
580 | non_stop = req; | |
581 | ||
582 | if (remote_debug) | |
583 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
584 | ||
585 | write_ok (own_buf); | |
586 | return; | |
587 | } | |
588 | ||
03583c20 UW |
589 | if (strncmp ("QDisableRandomization:", own_buf, |
590 | strlen ("QDisableRandomization:")) == 0) | |
591 | { | |
592 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
593 | ULONGEST setting; | |
594 | ||
595 | unpack_varlen_hex (packet, &setting); | |
596 | disable_randomization = setting; | |
597 | ||
598 | if (remote_debug) | |
599 | { | |
600 | if (disable_randomization) | |
601 | fprintf (stderr, "[address space randomization disabled]\n"); | |
602 | else | |
603 | fprintf (stderr, "[address space randomization enabled]\n"); | |
604 | } | |
605 | ||
606 | write_ok (own_buf); | |
607 | return; | |
608 | } | |
609 | ||
219f2f23 PA |
610 | if (target_supports_tracepoints () |
611 | && handle_tracepoint_general_set (own_buf)) | |
612 | return; | |
613 | ||
d1feda86 YQ |
614 | if (strncmp ("QAgent:", own_buf, strlen ("QAgent:")) == 0) |
615 | { | |
616 | char *mode = own_buf + strlen ("QAgent:"); | |
617 | int req = 0; | |
618 | ||
619 | if (strcmp (mode, "0") == 0) | |
620 | req = 0; | |
621 | else if (strcmp (mode, "1") == 0) | |
622 | req = 1; | |
623 | else | |
624 | { | |
625 | /* We don't know what this value is, so complain to GDB. */ | |
626 | sprintf (own_buf, "E.Unknown QAgent value"); | |
627 | return; | |
628 | } | |
629 | ||
630 | /* Update the flag. */ | |
631 | use_agent = req; | |
632 | if (remote_debug) | |
633 | fprintf (stderr, "[%s agent]\n", req ? "Enable" : "Disable"); | |
634 | write_ok (own_buf); | |
635 | return; | |
636 | } | |
637 | ||
9accd112 MM |
638 | if (handle_btrace_general_set (own_buf)) |
639 | return; | |
640 | ||
89be2091 DJ |
641 | /* Otherwise we didn't know what packet it was. Say we didn't |
642 | understand it. */ | |
643 | own_buf[0] = 0; | |
644 | } | |
645 | ||
23181151 | 646 | static const char * |
fb1e4ffc | 647 | get_features_xml (const char *annex) |
23181151 | 648 | { |
9b4b61c8 UW |
649 | /* gdbserver_xmltarget defines what to return when looking |
650 | for the "target.xml" file. Its contents can either be | |
651 | verbatim XML code (prefixed with a '@') or else the name | |
652 | of the actual XML file to be used in place of "target.xml". | |
fb1e4ffc | 653 | |
9b4b61c8 UW |
654 | This variable is set up from the auto-generated |
655 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 656 | |
9b4b61c8 | 657 | if (gdbserver_xmltarget |
221c031f | 658 | && strcmp (annex, "target.xml") == 0) |
23181151 | 659 | { |
9b4b61c8 UW |
660 | if (*gdbserver_xmltarget == '@') |
661 | return gdbserver_xmltarget + 1; | |
23181151 | 662 | else |
9b4b61c8 | 663 | annex = gdbserver_xmltarget; |
23181151 DJ |
664 | } |
665 | ||
9b4b61c8 UW |
666 | #ifdef USE_XML |
667 | { | |
668 | extern const char *const xml_builtin[][2]; | |
669 | int i; | |
670 | ||
671 | /* Look for the annex. */ | |
672 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
673 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
674 | break; | |
675 | ||
676 | if (xml_builtin[i][0] != NULL) | |
677 | return xml_builtin[i][1]; | |
678 | } | |
679 | #endif | |
680 | ||
681 | return NULL; | |
23181151 DJ |
682 | } |
683 | ||
c74d0ad8 DJ |
684 | void |
685 | monitor_show_help (void) | |
686 | { | |
687 | monitor_output ("The following monitor commands are supported:\n"); | |
688 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 689 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
690 | monitor_output (" set debug-hw-points <0|1>\n"); |
691 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
692 | monitor_output (" set remote-debug <0|1>\n"); |
693 | monitor_output (" Enable remote protocol debugging messages\n"); | |
ecd7ecbc DJ |
694 | monitor_output (" exit\n"); |
695 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
696 | } |
697 | ||
764880b7 PA |
698 | /* Read trace frame or inferior memory. Returns the number of bytes |
699 | actually read, zero when no further transfer is possible, and -1 on | |
700 | error. Return of a positive value smaller than LEN does not | |
701 | indicate there's no more to be read, only the end of the transfer. | |
702 | E.g., when GDB reads memory from a traceframe, a first request may | |
703 | be served from a memory block that does not cover the whole request | |
704 | length. A following request gets the rest served from either | |
705 | another block (of the same traceframe) or from the read-only | |
706 | regions. */ | |
219f2f23 PA |
707 | |
708 | static int | |
90d74c30 | 709 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 710 | { |
764880b7 | 711 | int res; |
90d74c30 | 712 | |
219f2f23 PA |
713 | if (current_traceframe >= 0) |
714 | { | |
715 | ULONGEST nbytes; | |
716 | ULONGEST length = len; | |
717 | ||
718 | if (traceframe_read_mem (current_traceframe, | |
719 | memaddr, myaddr, len, &nbytes)) | |
720 | return EIO; | |
721 | /* Data read from trace buffer, we're done. */ | |
764880b7 PA |
722 | if (nbytes > 0) |
723 | return nbytes; | |
219f2f23 | 724 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 725 | return -1; |
219f2f23 PA |
726 | /* Otherwise we have a valid readonly case, fall through. */ |
727 | /* (assume no half-trace half-real blocks for now) */ | |
728 | } | |
729 | ||
764880b7 PA |
730 | res = prepare_to_access_memory (); |
731 | if (res == 0) | |
90d74c30 | 732 | { |
764880b7 | 733 | res = read_inferior_memory (memaddr, myaddr, len); |
0146f85b | 734 | done_accessing_memory (); |
90d74c30 | 735 | |
764880b7 PA |
736 | return res == 0 ? len : -1; |
737 | } | |
738 | else | |
739 | return -1; | |
219f2f23 PA |
740 | } |
741 | ||
742 | /* Write trace frame or inferior memory. Actually, writing to trace | |
743 | frames is forbidden. */ | |
744 | ||
745 | static int | |
90d74c30 | 746 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
747 | { |
748 | if (current_traceframe >= 0) | |
749 | return EIO; | |
750 | else | |
90d74c30 PA |
751 | { |
752 | int ret; | |
753 | ||
754 | ret = prepare_to_access_memory (); | |
755 | if (ret == 0) | |
756 | { | |
757 | ret = write_inferior_memory (memaddr, myaddr, len); | |
0146f85b | 758 | done_accessing_memory (); |
90d74c30 PA |
759 | } |
760 | return ret; | |
761 | } | |
219f2f23 PA |
762 | } |
763 | ||
08388c79 DE |
764 | /* Subroutine of handle_search_memory to simplify it. */ |
765 | ||
766 | static int | |
767 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
768 | gdb_byte *pattern, unsigned pattern_len, | |
769 | gdb_byte *search_buf, | |
770 | unsigned chunk_size, unsigned search_buf_size, | |
771 | CORE_ADDR *found_addrp) | |
772 | { | |
773 | /* Prime the search buffer. */ | |
774 | ||
764880b7 PA |
775 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
776 | != search_buf_size) | |
08388c79 | 777 | { |
b3dc46ff AB |
778 | warning ("Unable to access %ld bytes of target " |
779 | "memory at 0x%lx, halting search.", | |
780 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
781 | return -1; |
782 | } | |
783 | ||
784 | /* Perform the search. | |
785 | ||
786 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
787 | When we've scanned N bytes we copy the trailing bytes to the start and | |
788 | read in another N bytes. */ | |
789 | ||
790 | while (search_space_len >= pattern_len) | |
791 | { | |
792 | gdb_byte *found_ptr; | |
793 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
794 | ? search_space_len | |
795 | : search_buf_size); | |
796 | ||
797 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); | |
798 | ||
799 | if (found_ptr != NULL) | |
800 | { | |
801 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
802 | *found_addrp = found_addr; | |
803 | return 1; | |
804 | } | |
805 | ||
806 | /* Not found in this chunk, skip to next chunk. */ | |
807 | ||
808 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
809 | if (search_space_len >= chunk_size) | |
810 | search_space_len -= chunk_size; | |
811 | else | |
812 | search_space_len = 0; | |
813 | ||
814 | if (search_space_len >= pattern_len) | |
815 | { | |
816 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 817 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
818 | int nr_to_read; |
819 | ||
820 | /* Copy the trailing part of the previous iteration to the front | |
821 | of the buffer for the next iteration. */ | |
822 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
823 | ||
824 | nr_to_read = (search_space_len - keep_len < chunk_size | |
825 | ? search_space_len - keep_len | |
826 | : chunk_size); | |
827 | ||
90d74c30 | 828 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 829 | nr_to_read) != search_buf_size) |
08388c79 | 830 | { |
b3dc46ff | 831 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 832 | "at 0x%lx, halting search.", |
b3dc46ff | 833 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
834 | return -1; |
835 | } | |
836 | ||
837 | start_addr += chunk_size; | |
838 | } | |
839 | } | |
840 | ||
841 | /* Not found. */ | |
842 | ||
843 | return 0; | |
844 | } | |
845 | ||
846 | /* Handle qSearch:memory packets. */ | |
847 | ||
848 | static void | |
849 | handle_search_memory (char *own_buf, int packet_len) | |
850 | { | |
851 | CORE_ADDR start_addr; | |
852 | CORE_ADDR search_space_len; | |
853 | gdb_byte *pattern; | |
854 | unsigned int pattern_len; | |
855 | /* NOTE: also defined in find.c testcase. */ | |
856 | #define SEARCH_CHUNK_SIZE 16000 | |
857 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
858 | /* Buffer to hold memory contents for searching. */ | |
859 | gdb_byte *search_buf; | |
860 | unsigned search_buf_size; | |
861 | int found; | |
862 | CORE_ADDR found_addr; | |
863 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
864 | ||
aef93bd7 | 865 | pattern = malloc (packet_len); |
08388c79 DE |
866 | if (pattern == NULL) |
867 | { | |
5e1471f5 | 868 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
869 | strcpy (own_buf, "E00"); |
870 | return; | |
871 | } | |
872 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
873 | packet_len - cmd_name_len, | |
874 | &start_addr, &search_space_len, | |
875 | pattern, &pattern_len) < 0) | |
876 | { | |
877 | free (pattern); | |
5e1471f5 | 878 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
879 | strcpy (own_buf, "E00"); |
880 | return; | |
881 | } | |
882 | ||
883 | search_buf_size = chunk_size + pattern_len - 1; | |
884 | ||
885 | /* No point in trying to allocate a buffer larger than the search space. */ | |
886 | if (search_space_len < search_buf_size) | |
887 | search_buf_size = search_space_len; | |
888 | ||
aef93bd7 | 889 | search_buf = malloc (search_buf_size); |
08388c79 DE |
890 | if (search_buf == NULL) |
891 | { | |
892 | free (pattern); | |
5e1471f5 | 893 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
894 | strcpy (own_buf, "E00"); |
895 | return; | |
896 | } | |
897 | ||
898 | found = handle_search_memory_1 (start_addr, search_space_len, | |
899 | pattern, pattern_len, | |
900 | search_buf, chunk_size, search_buf_size, | |
901 | &found_addr); | |
902 | ||
903 | if (found > 0) | |
904 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
905 | else if (found == 0) | |
906 | strcpy (own_buf, "0"); | |
907 | else | |
908 | strcpy (own_buf, "E00"); | |
909 | ||
910 | free (search_buf); | |
911 | free (pattern); | |
912 | } | |
913 | ||
2d717e4f DJ |
914 | #define require_running(BUF) \ |
915 | if (!target_running ()) \ | |
916 | { \ | |
917 | write_enn (BUF); \ | |
918 | return; \ | |
919 | } | |
920 | ||
cdbfd419 PP |
921 | /* Handle monitor commands not handled by target-specific handlers. */ |
922 | ||
923 | static void | |
d73f2619 | 924 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
925 | { |
926 | if (strcmp (mon, "set debug 1") == 0) | |
927 | { | |
928 | debug_threads = 1; | |
929 | monitor_output ("Debug output enabled.\n"); | |
930 | } | |
931 | else if (strcmp (mon, "set debug 0") == 0) | |
932 | { | |
933 | debug_threads = 0; | |
934 | monitor_output ("Debug output disabled.\n"); | |
935 | } | |
936 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
937 | { | |
938 | debug_hw_points = 1; | |
939 | monitor_output ("H/W point debugging output enabled.\n"); | |
940 | } | |
941 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
942 | { | |
943 | debug_hw_points = 0; | |
944 | monitor_output ("H/W point debugging output disabled.\n"); | |
945 | } | |
946 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
947 | { | |
948 | remote_debug = 1; | |
949 | monitor_output ("Protocol debug output enabled.\n"); | |
950 | } | |
951 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
952 | { | |
953 | remote_debug = 0; | |
954 | monitor_output ("Protocol debug output disabled.\n"); | |
955 | } | |
956 | else if (strcmp (mon, "help") == 0) | |
957 | monitor_show_help (); | |
958 | else if (strcmp (mon, "exit") == 0) | |
959 | exit_requested = 1; | |
960 | else | |
961 | { | |
962 | monitor_output ("Unknown monitor command.\n\n"); | |
963 | monitor_show_help (); | |
964 | write_enn (own_buf); | |
965 | } | |
966 | } | |
967 | ||
d08aafef PA |
968 | /* Associates a callback with each supported qXfer'able object. */ |
969 | ||
970 | struct qxfer | |
971 | { | |
972 | /* The object this handler handles. */ | |
973 | const char *object; | |
974 | ||
975 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
976 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
977 | the starting point. The ANNEX can be used to provide additional | |
978 | data-specific information to the target. | |
979 | ||
980 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
981 | further transfer is possible, -1 on error, -2 when the transfer |
982 | is not supported, and -3 on a verbose error message that should | |
983 | be preserved. Return of a positive value smaller than LEN does | |
984 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
985 | |
986 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
987 | int (*xfer) (const char *annex, | |
988 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
989 | ULONGEST offset, LONGEST len); | |
990 | }; | |
991 | ||
992 | /* Handle qXfer:auxv:read. */ | |
993 | ||
994 | static int | |
995 | handle_qxfer_auxv (const char *annex, | |
996 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
997 | ULONGEST offset, LONGEST len) | |
998 | { | |
999 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1000 | return -2; | |
1001 | ||
1002 | if (annex[0] != '\0' || !target_running ()) | |
1003 | return -1; | |
1004 | ||
1005 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1006 | } | |
1007 | ||
1008 | /* Handle qXfer:features:read. */ | |
1009 | ||
1010 | static int | |
1011 | handle_qxfer_features (const char *annex, | |
1012 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1013 | ULONGEST offset, LONGEST len) | |
1014 | { | |
1015 | const char *document; | |
1016 | size_t total_len; | |
1017 | ||
1018 | if (writebuf != NULL) | |
1019 | return -2; | |
1020 | ||
1021 | if (!target_running ()) | |
1022 | return -1; | |
1023 | ||
1024 | /* Grab the correct annex. */ | |
1025 | document = get_features_xml (annex); | |
1026 | if (document == NULL) | |
1027 | return -1; | |
1028 | ||
1029 | total_len = strlen (document); | |
1030 | ||
1031 | if (offset > total_len) | |
1032 | return -1; | |
1033 | ||
1034 | if (offset + len > total_len) | |
1035 | len = total_len - offset; | |
1036 | ||
1037 | memcpy (readbuf, document + offset, len); | |
1038 | return len; | |
1039 | } | |
1040 | ||
1041 | /* Handle qXfer:libraries:read. */ | |
1042 | ||
1043 | static int | |
1044 | handle_qxfer_libraries (const char *annex, | |
1045 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1046 | ULONGEST offset, LONGEST len) | |
1047 | { | |
1048 | unsigned int total_len; | |
1049 | char *document, *p; | |
1050 | struct inferior_list_entry *dll_ptr; | |
1051 | ||
1052 | if (writebuf != NULL) | |
1053 | return -2; | |
1054 | ||
1055 | if (annex[0] != '\0' || !target_running ()) | |
1056 | return -1; | |
1057 | ||
1058 | /* Over-estimate the necessary memory. Assume that every character | |
1059 | in the library name must be escaped. */ | |
1060 | total_len = 64; | |
1061 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
1062 | total_len += 128 + 6 * strlen (((struct dll_info *) dll_ptr)->name); | |
1063 | ||
1064 | document = malloc (total_len); | |
1065 | if (document == NULL) | |
1066 | return -1; | |
1067 | ||
1068 | strcpy (document, "<library-list>\n"); | |
1069 | p = document + strlen (document); | |
1070 | ||
1071 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
1072 | { | |
1073 | struct dll_info *dll = (struct dll_info *) dll_ptr; | |
1074 | char *name; | |
1075 | ||
1076 | strcpy (p, " <library name=\""); | |
1077 | p = p + strlen (p); | |
1078 | name = xml_escape_text (dll->name); | |
1079 | strcpy (p, name); | |
1080 | free (name); | |
1081 | p = p + strlen (p); | |
1082 | strcpy (p, "\"><segment address=\""); | |
1083 | p = p + strlen (p); | |
1084 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1085 | p = p + strlen (p); | |
1086 | strcpy (p, "\"/></library>\n"); | |
1087 | p = p + strlen (p); | |
1088 | } | |
1089 | ||
1090 | strcpy (p, "</library-list>\n"); | |
1091 | ||
1092 | total_len = strlen (document); | |
1093 | ||
1094 | if (offset > total_len) | |
1095 | { | |
1096 | free (document); | |
1097 | return -1; | |
1098 | } | |
1099 | ||
1100 | if (offset + len > total_len) | |
1101 | len = total_len - offset; | |
1102 | ||
1103 | memcpy (readbuf, document + offset, len); | |
1104 | free (document); | |
1105 | return len; | |
1106 | } | |
1107 | ||
2268b414 JK |
1108 | /* Handle qXfer:libraries-svr4:read. */ |
1109 | ||
1110 | static int | |
1111 | handle_qxfer_libraries_svr4 (const char *annex, | |
1112 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1113 | ULONGEST offset, LONGEST len) | |
1114 | { | |
1115 | if (writebuf != NULL) | |
1116 | return -2; | |
1117 | ||
b1fbec62 | 1118 | if (!target_running () || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1119 | return -1; |
1120 | ||
1121 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1122 | } | |
1123 | ||
d08aafef PA |
1124 | /* Handle qXfer:osadata:read. */ |
1125 | ||
1126 | static int | |
1127 | handle_qxfer_osdata (const char *annex, | |
1128 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1129 | ULONGEST offset, LONGEST len) | |
1130 | { | |
1131 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1132 | return -2; | |
1133 | ||
1134 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1135 | } | |
1136 | ||
1137 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1138 | ||
1139 | static int | |
1140 | handle_qxfer_siginfo (const char *annex, | |
1141 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1142 | ULONGEST offset, LONGEST len) | |
1143 | { | |
1144 | if (the_target->qxfer_siginfo == NULL) | |
1145 | return -2; | |
1146 | ||
1147 | if (annex[0] != '\0' || !target_running ()) | |
1148 | return -1; | |
1149 | ||
1150 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1151 | } | |
1152 | ||
1153 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1154 | ||
1155 | static int | |
1156 | handle_qxfer_spu (const char *annex, | |
1157 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1158 | ULONGEST offset, LONGEST len) | |
1159 | { | |
1160 | if (the_target->qxfer_spu == NULL) | |
1161 | return -2; | |
1162 | ||
1163 | if (!target_running ()) | |
1164 | return -1; | |
1165 | ||
1166 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1167 | } | |
1168 | ||
1169 | /* Handle qXfer:statictrace:read. */ | |
1170 | ||
1171 | static int | |
1172 | handle_qxfer_statictrace (const char *annex, | |
1173 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1174 | ULONGEST offset, LONGEST len) | |
1175 | { | |
1176 | ULONGEST nbytes; | |
1177 | ||
1178 | if (writebuf != NULL) | |
1179 | return -2; | |
1180 | ||
1181 | if (annex[0] != '\0' || !target_running () || current_traceframe == -1) | |
1182 | return -1; | |
1183 | ||
1184 | if (traceframe_read_sdata (current_traceframe, offset, | |
1185 | readbuf, len, &nbytes)) | |
1186 | return -1; | |
1187 | return nbytes; | |
1188 | } | |
1189 | ||
1190 | /* Helper for handle_qxfer_threads. */ | |
1191 | ||
dc146f7c | 1192 | static void |
d08aafef | 1193 | handle_qxfer_threads_proper (struct buffer *buffer) |
dc146f7c VP |
1194 | { |
1195 | struct inferior_list_entry *thread; | |
1196 | ||
1197 | buffer_grow_str (buffer, "<threads>\n"); | |
1198 | ||
1199 | for (thread = all_threads.head; thread; thread = thread->next) | |
1200 | { | |
1201 | ptid_t ptid = thread_to_gdb_id ((struct thread_info *)thread); | |
1202 | char ptid_s[100]; | |
3e10640f | 1203 | int core = target_core_of_thread (ptid); |
dc146f7c VP |
1204 | char core_s[21]; |
1205 | ||
1206 | write_ptid (ptid_s, ptid); | |
1207 | ||
dc146f7c VP |
1208 | if (core != -1) |
1209 | { | |
1210 | sprintf (core_s, "%d", core); | |
1211 | buffer_xml_printf (buffer, "<thread id=\"%s\" core=\"%s\"/>\n", | |
1212 | ptid_s, core_s); | |
1213 | } | |
1214 | else | |
1215 | { | |
1216 | buffer_xml_printf (buffer, "<thread id=\"%s\"/>\n", | |
1217 | ptid_s); | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1222 | } | |
1223 | ||
d08aafef PA |
1224 | /* Handle qXfer:threads:read. */ |
1225 | ||
dc146f7c | 1226 | static int |
d08aafef PA |
1227 | handle_qxfer_threads (const char *annex, |
1228 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1229 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1230 | { |
1231 | static char *result = 0; | |
1232 | static unsigned int result_length = 0; | |
1233 | ||
d08aafef PA |
1234 | if (writebuf != NULL) |
1235 | return -2; | |
1236 | ||
1237 | if (!target_running () || annex[0] != '\0') | |
1238 | return -1; | |
dc146f7c VP |
1239 | |
1240 | if (offset == 0) | |
1241 | { | |
1242 | struct buffer buffer; | |
1243 | /* When asked for data at offset 0, generate everything and store into | |
1244 | 'result'. Successive reads will be served off 'result'. */ | |
1245 | if (result) | |
1246 | free (result); | |
1247 | ||
1248 | buffer_init (&buffer); | |
1249 | ||
d08aafef | 1250 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1251 | |
1252 | result = buffer_finish (&buffer); | |
1253 | result_length = strlen (result); | |
1254 | buffer_free (&buffer); | |
1255 | } | |
1256 | ||
1257 | if (offset >= result_length) | |
1258 | { | |
1259 | /* We're out of data. */ | |
1260 | free (result); | |
1261 | result = NULL; | |
1262 | result_length = 0; | |
1263 | return 0; | |
1264 | } | |
1265 | ||
d08aafef PA |
1266 | if (len > result_length - offset) |
1267 | len = result_length - offset; | |
1268 | ||
1269 | memcpy (readbuf, result + offset, len); | |
1270 | ||
1271 | return len; | |
1272 | } | |
1273 | ||
b3b9301e PA |
1274 | /* Handle qXfer:traceframe-info:read. */ |
1275 | ||
1276 | static int | |
1277 | handle_qxfer_traceframe_info (const char *annex, | |
1278 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1279 | ULONGEST offset, LONGEST len) | |
1280 | { | |
1281 | static char *result = 0; | |
1282 | static unsigned int result_length = 0; | |
1283 | ||
1284 | if (writebuf != NULL) | |
1285 | return -2; | |
1286 | ||
1287 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1288 | return -1; | |
1289 | ||
1290 | if (offset == 0) | |
1291 | { | |
1292 | struct buffer buffer; | |
1293 | ||
1294 | /* When asked for data at offset 0, generate everything and | |
1295 | store into 'result'. Successive reads will be served off | |
1296 | 'result'. */ | |
1297 | free (result); | |
1298 | ||
1299 | buffer_init (&buffer); | |
1300 | ||
1301 | traceframe_read_info (current_traceframe, &buffer); | |
1302 | ||
1303 | result = buffer_finish (&buffer); | |
1304 | result_length = strlen (result); | |
1305 | buffer_free (&buffer); | |
1306 | } | |
1307 | ||
1308 | if (offset >= result_length) | |
1309 | { | |
1310 | /* We're out of data. */ | |
1311 | free (result); | |
1312 | result = NULL; | |
1313 | result_length = 0; | |
1314 | return 0; | |
1315 | } | |
1316 | ||
1317 | if (len > result_length - offset) | |
1318 | len = result_length - offset; | |
1319 | ||
1320 | memcpy (readbuf, result + offset, len); | |
1321 | return len; | |
1322 | } | |
1323 | ||
78d85199 YQ |
1324 | /* Handle qXfer:fdpic:read. */ |
1325 | ||
1326 | static int | |
1327 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1328 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1329 | { | |
1330 | if (the_target->read_loadmap == NULL) | |
1331 | return -2; | |
1332 | ||
1333 | if (!target_running ()) | |
1334 | return -1; | |
1335 | ||
1336 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1337 | } | |
1338 | ||
9accd112 MM |
1339 | /* Handle qXfer:btrace:read. */ |
1340 | ||
1341 | static int | |
1342 | handle_qxfer_btrace (const char *annex, | |
1343 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1344 | ULONGEST offset, LONGEST len) | |
1345 | { | |
1346 | static struct buffer cache; | |
1347 | struct thread_info *thread; | |
1348 | int type; | |
1349 | ||
1350 | if (the_target->read_btrace == NULL || writebuf != NULL) | |
1351 | return -2; | |
1352 | ||
1353 | if (!target_running ()) | |
1354 | return -1; | |
1355 | ||
1356 | if (ptid_equal (general_thread, null_ptid) | |
1357 | || ptid_equal (general_thread, minus_one_ptid)) | |
1358 | { | |
1359 | strcpy (own_buf, "E.Must select a single thread."); | |
1360 | return -3; | |
1361 | } | |
1362 | ||
1363 | thread = find_thread_ptid (general_thread); | |
1364 | if (thread == NULL) | |
1365 | { | |
1366 | strcpy (own_buf, "E.No such thread."); | |
1367 | return -3; | |
1368 | } | |
1369 | ||
1370 | if (thread->btrace == NULL) | |
1371 | { | |
1372 | strcpy (own_buf, "E.Btrace not enabled."); | |
1373 | return -3; | |
1374 | } | |
1375 | ||
1376 | if (strcmp (annex, "all") == 0) | |
1377 | type = btrace_read_all; | |
1378 | else if (strcmp (annex, "new") == 0) | |
1379 | type = btrace_read_new; | |
1380 | else | |
1381 | { | |
1382 | strcpy (own_buf, "E.Bad annex."); | |
1383 | return -3; | |
1384 | } | |
1385 | ||
1386 | if (offset == 0) | |
1387 | { | |
1388 | buffer_free (&cache); | |
1389 | ||
1390 | target_read_btrace (thread->btrace, &cache, type); | |
1391 | } | |
1392 | else if (offset > cache.used_size) | |
1393 | { | |
1394 | buffer_free (&cache); | |
1395 | return -3; | |
1396 | } | |
1397 | ||
1398 | if (len > cache.used_size - offset) | |
1399 | len = cache.used_size - offset; | |
1400 | ||
1401 | memcpy (readbuf, cache.buffer + offset, len); | |
1402 | ||
1403 | return len; | |
1404 | } | |
1405 | ||
d08aafef PA |
1406 | static const struct qxfer qxfer_packets[] = |
1407 | { | |
1408 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1409 | { "btrace", handle_qxfer_btrace }, |
78d85199 | 1410 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1411 | { "features", handle_qxfer_features }, |
1412 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1413 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1414 | { "osdata", handle_qxfer_osdata }, |
1415 | { "siginfo", handle_qxfer_siginfo }, | |
1416 | { "spu", handle_qxfer_spu }, | |
1417 | { "statictrace", handle_qxfer_statictrace }, | |
1418 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1419 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1420 | }; |
1421 | ||
1422 | static int | |
1423 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1424 | { | |
1425 | int i; | |
1426 | char *object; | |
1427 | char *rw; | |
1428 | char *annex; | |
1429 | char *offset; | |
1430 | ||
1431 | if (strncmp (own_buf, "qXfer:", 6) != 0) | |
1432 | return 0; | |
1433 | ||
1434 | /* Grab the object, r/w and annex. */ | |
1435 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1436 | { | |
1437 | write_enn (own_buf); | |
1438 | return 1; | |
1439 | } | |
1440 | ||
1441 | for (i = 0; | |
1442 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1443 | i++) | |
1444 | { | |
1445 | const struct qxfer *q = &qxfer_packets[i]; | |
1446 | ||
1447 | if (strcmp (object, q->object) == 0) | |
1448 | { | |
1449 | if (strcmp (rw, "read") == 0) | |
1450 | { | |
1451 | unsigned char *data; | |
1452 | int n; | |
1453 | CORE_ADDR ofs; | |
1454 | unsigned int len; | |
1455 | ||
1456 | /* Grab the offset and length. */ | |
1457 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
1458 | { | |
1459 | write_enn (own_buf); | |
1460 | return 1; | |
1461 | } | |
1462 | ||
1463 | /* Read one extra byte, as an indicator of whether there is | |
1464 | more. */ | |
1465 | if (len > PBUFSIZ - 2) | |
1466 | len = PBUFSIZ - 2; | |
1467 | data = malloc (len + 1); | |
1468 | if (data == NULL) | |
1469 | { | |
1470 | write_enn (own_buf); | |
1471 | return 1; | |
1472 | } | |
1473 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
1474 | if (n == -2) | |
1475 | { | |
1476 | free (data); | |
1477 | return 0; | |
1478 | } | |
5cc22e4c MM |
1479 | else if (n == -3) |
1480 | { | |
1481 | /* Preserve error message. */ | |
1482 | } | |
d08aafef PA |
1483 | else if (n < 0) |
1484 | write_enn (own_buf); | |
1485 | else if (n > len) | |
1486 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1487 | else | |
1488 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1489 | ||
1490 | free (data); | |
1491 | return 1; | |
1492 | } | |
1493 | else if (strcmp (rw, "write") == 0) | |
1494 | { | |
1495 | int n; | |
1496 | unsigned int len; | |
1497 | CORE_ADDR ofs; | |
1498 | unsigned char *data; | |
1499 | ||
1500 | strcpy (own_buf, "E00"); | |
1501 | data = malloc (packet_len - (offset - own_buf)); | |
1502 | if (data == NULL) | |
1503 | { | |
1504 | write_enn (own_buf); | |
1505 | return 1; | |
1506 | } | |
1507 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
1508 | &ofs, &len, data) < 0) | |
1509 | { | |
1510 | free (data); | |
1511 | write_enn (own_buf); | |
1512 | return 1; | |
1513 | } | |
1514 | ||
1515 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
1516 | if (n == -2) | |
1517 | { | |
1518 | free (data); | |
1519 | return 0; | |
1520 | } | |
5cc22e4c MM |
1521 | else if (n == -3) |
1522 | { | |
1523 | /* Preserve error message. */ | |
1524 | } | |
d08aafef PA |
1525 | else if (n < 0) |
1526 | write_enn (own_buf); | |
1527 | else | |
1528 | sprintf (own_buf, "%x", n); | |
dc146f7c | 1529 | |
d08aafef PA |
1530 | free (data); |
1531 | return 1; | |
1532 | } | |
dc146f7c | 1533 | |
d08aafef PA |
1534 | return 0; |
1535 | } | |
1536 | } | |
dc146f7c | 1537 | |
d08aafef | 1538 | return 0; |
dc146f7c VP |
1539 | } |
1540 | ||
30ba68cb MS |
1541 | /* Table used by the crc32 function to calcuate the checksum. */ |
1542 | ||
1543 | static unsigned int crc32_table[256] = | |
1544 | {0, 0}; | |
1545 | ||
1546 | /* Compute 32 bit CRC from inferior memory. | |
1547 | ||
1548 | On success, return 32 bit CRC. | |
1549 | On failure, return (unsigned long long) -1. */ | |
1550 | ||
1551 | static unsigned long long | |
1552 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
1553 | { | |
1554 | if (!crc32_table[1]) | |
1555 | { | |
1556 | /* Initialize the CRC table and the decoding table. */ | |
1557 | int i, j; | |
1558 | unsigned int c; | |
1559 | ||
1560 | for (i = 0; i < 256; i++) | |
1561 | { | |
1562 | for (c = i << 24, j = 8; j > 0; --j) | |
1563 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
1564 | crc32_table[i] = c; | |
1565 | } | |
1566 | } | |
1567 | ||
1568 | while (len--) | |
1569 | { | |
1570 | unsigned char byte = 0; | |
1571 | ||
1572 | /* Return failure if memory read fails. */ | |
1573 | if (read_inferior_memory (base, &byte, 1) != 0) | |
1574 | return (unsigned long long) -1; | |
1575 | ||
1576 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ byte) & 255]; | |
1577 | base++; | |
1578 | } | |
1579 | return (unsigned long long) crc; | |
1580 | } | |
1581 | ||
ce3a066d | 1582 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 1583 | |
ce3a066d | 1584 | void |
0e7f50da | 1585 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 1586 | { |
0d62e5e8 DJ |
1587 | static struct inferior_list_entry *thread_ptr; |
1588 | ||
bb63802a | 1589 | /* Reply the current thread id. */ |
db42f210 | 1590 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 1591 | { |
95954743 | 1592 | ptid_t gdb_id; |
2d717e4f | 1593 | require_running (own_buf); |
bd99dc85 | 1594 | |
95954743 PA |
1595 | if (!ptid_equal (general_thread, null_ptid) |
1596 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
1597 | gdb_id = general_thread; |
1598 | else | |
1599 | { | |
1600 | thread_ptr = all_threads.head; | |
1601 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1602 | } | |
1603 | ||
95954743 PA |
1604 | sprintf (own_buf, "QC"); |
1605 | own_buf += 2; | |
4b812f4e | 1606 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
1607 | return; |
1608 | } | |
1609 | ||
ce3a066d DJ |
1610 | if (strcmp ("qSymbol::", own_buf) == 0) |
1611 | { | |
d3bbe7a0 PA |
1612 | /* GDB is suggesting new symbols have been loaded. This may |
1613 | mean a new shared library has been detected as loaded, so | |
1614 | take the opportunity to check if breakpoints we think are | |
1615 | inserted, still are. Note that it isn't guaranteed that | |
1616 | we'll see this when a shared library is loaded, and nor will | |
1617 | we see this for unloads (although breakpoints in unloaded | |
1618 | libraries shouldn't trigger), as GDB may not find symbols for | |
1619 | the library at all. We also re-validate breakpoints when we | |
1620 | see a second GDB breakpoint for the same address, and or when | |
1621 | we access breakpoint shadows. */ | |
1622 | validate_breakpoints (); | |
1623 | ||
fa593d66 PA |
1624 | if (target_supports_tracepoints ()) |
1625 | tracepoint_look_up_symbols (); | |
1626 | ||
2d717e4f | 1627 | if (target_running () && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
1628 | (*the_target->look_up_symbols) (); |
1629 | ||
ce3a066d DJ |
1630 | strcpy (own_buf, "OK"); |
1631 | return; | |
1632 | } | |
1633 | ||
db42f210 | 1634 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 1635 | { |
db42f210 | 1636 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 1637 | { |
95954743 PA |
1638 | ptid_t gdb_id; |
1639 | ||
db42f210 PA |
1640 | require_running (own_buf); |
1641 | thread_ptr = all_threads.head; | |
95954743 PA |
1642 | |
1643 | *own_buf++ = 'm'; | |
1644 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1645 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
1646 | thread_ptr = thread_ptr->next; |
1647 | return; | |
1648 | } | |
db42f210 PA |
1649 | |
1650 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 1651 | { |
95954743 PA |
1652 | ptid_t gdb_id; |
1653 | ||
db42f210 PA |
1654 | require_running (own_buf); |
1655 | if (thread_ptr != NULL) | |
1656 | { | |
95954743 PA |
1657 | *own_buf++ = 'm'; |
1658 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1659 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
1660 | thread_ptr = thread_ptr->next; |
1661 | return; | |
1662 | } | |
1663 | else | |
1664 | { | |
1665 | sprintf (own_buf, "l"); | |
1666 | return; | |
1667 | } | |
0d62e5e8 DJ |
1668 | } |
1669 | } | |
aa691b87 | 1670 | |
52fb6437 NS |
1671 | if (the_target->read_offsets != NULL |
1672 | && strcmp ("qOffsets", own_buf) == 0) | |
1673 | { | |
1674 | CORE_ADDR text, data; | |
2d717e4f DJ |
1675 | |
1676 | require_running (own_buf); | |
52fb6437 NS |
1677 | if (the_target->read_offsets (&text, &data)) |
1678 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
1679 | (long)text, (long)data, (long)data); | |
1680 | else | |
1681 | write_enn (own_buf); | |
1b3f6016 | 1682 | |
52fb6437 NS |
1683 | return; |
1684 | } | |
1685 | ||
be2a5f71 DJ |
1686 | /* Protocol features query. */ |
1687 | if (strncmp ("qSupported", own_buf, 10) == 0 | |
1688 | && (own_buf[10] == ':' || own_buf[10] == '\0')) | |
1689 | { | |
95954743 | 1690 | char *p = &own_buf[10]; |
fa593d66 | 1691 | int gdb_supports_qRelocInsn = 0; |
95954743 | 1692 | |
1570b33e L |
1693 | /* Start processing qSupported packet. */ |
1694 | target_process_qsupported (NULL); | |
1695 | ||
95954743 PA |
1696 | /* Process each feature being provided by GDB. The first |
1697 | feature will follow a ':', and latter features will follow | |
1698 | ';'. */ | |
1699 | if (*p == ':') | |
d149dd1d PA |
1700 | { |
1701 | char **qsupported = NULL; | |
1702 | int count = 0; | |
1703 | int i; | |
1704 | ||
1705 | /* Two passes, to avoid nested strtok calls in | |
1706 | target_process_qsupported. */ | |
1707 | for (p = strtok (p + 1, ";"); | |
1708 | p != NULL; | |
1709 | p = strtok (NULL, ";")) | |
1710 | { | |
1711 | count++; | |
1712 | qsupported = xrealloc (qsupported, count * sizeof (char *)); | |
1713 | qsupported[count - 1] = xstrdup (p); | |
1714 | } | |
1715 | ||
1716 | for (i = 0; i < count; i++) | |
1717 | { | |
1718 | p = qsupported[i]; | |
1719 | if (strcmp (p, "multiprocess+") == 0) | |
1720 | { | |
1721 | /* GDB supports and wants multi-process support if | |
1722 | possible. */ | |
1723 | if (target_supports_multi_process ()) | |
1724 | multi_process = 1; | |
1725 | } | |
fa593d66 PA |
1726 | else if (strcmp (p, "qRelocInsn+") == 0) |
1727 | { | |
1728 | /* GDB supports relocate instruction requests. */ | |
1729 | gdb_supports_qRelocInsn = 1; | |
1730 | } | |
d149dd1d PA |
1731 | else |
1732 | target_process_qsupported (p); | |
1733 | ||
1734 | free (p); | |
1735 | } | |
1736 | ||
1737 | free (qsupported); | |
1738 | } | |
95954743 | 1739 | |
9b224c5e PA |
1740 | sprintf (own_buf, |
1741 | "PacketSize=%x;QPassSignals+;QProgramSignals+", | |
1742 | PBUFSIZ - 1); | |
0876f84a | 1743 | |
2268b414 | 1744 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
1745 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
1746 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
1747 | else |
1748 | { | |
1749 | /* We do not have any hook to indicate whether the non-SVR4 target | |
1750 | backend supports qXfer:libraries:read, so always report it. */ | |
1751 | strcat (own_buf, ";qXfer:libraries:read+"); | |
1752 | } | |
255e7678 | 1753 | |
0876f84a | 1754 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 1755 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 1756 | |
0e7f50da UW |
1757 | if (the_target->qxfer_spu != NULL) |
1758 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 1759 | |
4aa995e1 PA |
1760 | if (the_target->qxfer_siginfo != NULL) |
1761 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
1762 | ||
78d85199 YQ |
1763 | if (the_target->read_loadmap != NULL) |
1764 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
1765 | ||
221c031f UW |
1766 | /* We always report qXfer:features:read, as targets may |
1767 | install XML files on a subsequent call to arch_setup. | |
1768 | If we reported to GDB on startup that we don't support | |
1769 | qXfer:feature:read at all, we will never be re-queried. */ | |
1770 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 1771 | |
a6f3e723 SL |
1772 | if (transport_is_reliable) |
1773 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
1774 | |
1775 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 1776 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 1777 | |
cf8fd78b PA |
1778 | if (target_supports_multi_process ()) |
1779 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 1780 | |
bd99dc85 PA |
1781 | if (target_supports_non_stop ()) |
1782 | strcat (own_buf, ";QNonStop+"); | |
1783 | ||
03583c20 UW |
1784 | if (target_supports_disable_randomization ()) |
1785 | strcat (own_buf, ";QDisableRandomization+"); | |
1786 | ||
dc146f7c VP |
1787 | strcat (own_buf, ";qXfer:threads:read+"); |
1788 | ||
219f2f23 PA |
1789 | if (target_supports_tracepoints ()) |
1790 | { | |
1791 | strcat (own_buf, ";ConditionalTracepoints+"); | |
1792 | strcat (own_buf, ";TraceStateVariables+"); | |
1793 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 1794 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
1795 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
1796 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 1797 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 1798 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 1799 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 1800 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 1801 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 1802 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 1803 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
1804 | } |
1805 | ||
d3ce09f5 | 1806 | /* Support target-side breakpoint conditions and commands. */ |
9f3a5c85 | 1807 | strcat (own_buf, ";ConditionalBreakpoints+"); |
d3ce09f5 | 1808 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 1809 | |
d1feda86 YQ |
1810 | if (target_supports_agent ()) |
1811 | strcat (own_buf, ";QAgent+"); | |
1812 | ||
9accd112 MM |
1813 | if (target_supports_btrace ()) |
1814 | { | |
1815 | strcat (own_buf, ";Qbtrace:bts+"); | |
1816 | strcat (own_buf, ";Qbtrace:off+"); | |
1817 | strcat (own_buf, ";qXfer:btrace:read+"); | |
1818 | } | |
1819 | ||
be2a5f71 DJ |
1820 | return; |
1821 | } | |
1822 | ||
dae5f5cf DJ |
1823 | /* Thread-local storage support. */ |
1824 | if (the_target->get_tls_address != NULL | |
1825 | && strncmp ("qGetTLSAddr:", own_buf, 12) == 0) | |
1826 | { | |
1827 | char *p = own_buf + 12; | |
5b1c542e | 1828 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 1829 | int i, err; |
95954743 | 1830 | ptid_t ptid = null_ptid; |
dae5f5cf | 1831 | |
2d717e4f DJ |
1832 | require_running (own_buf); |
1833 | ||
dae5f5cf DJ |
1834 | for (i = 0; i < 3; i++) |
1835 | { | |
1836 | char *p2; | |
1837 | int len; | |
1838 | ||
1839 | if (p == NULL) | |
1840 | break; | |
1841 | ||
1842 | p2 = strchr (p, ','); | |
1843 | if (p2) | |
1844 | { | |
1845 | len = p2 - p; | |
1846 | p2++; | |
1847 | } | |
1848 | else | |
1849 | { | |
1850 | len = strlen (p); | |
1851 | p2 = NULL; | |
1852 | } | |
1853 | ||
5b1c542e | 1854 | if (i == 0) |
95954743 | 1855 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
1856 | else |
1857 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
1858 | p = p2; |
1859 | } | |
1860 | ||
1861 | if (p != NULL || i < 3) | |
1862 | err = 1; | |
1863 | else | |
1864 | { | |
e09875d4 | 1865 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
1866 | |
1867 | if (thread == NULL) | |
1868 | err = 2; | |
1869 | else | |
5b1c542e | 1870 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
1871 | &address); |
1872 | } | |
1873 | ||
1874 | if (err == 0) | |
1875 | { | |
c6f46ca0 | 1876 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
1877 | return; |
1878 | } | |
1879 | else if (err > 0) | |
1880 | { | |
1881 | write_enn (own_buf); | |
1882 | return; | |
1883 | } | |
1884 | ||
1885 | /* Otherwise, pretend we do not understand this packet. */ | |
1886 | } | |
1887 | ||
711e434b PM |
1888 | /* Windows OS Thread Information Block address support. */ |
1889 | if (the_target->get_tib_address != NULL | |
1890 | && strncmp ("qGetTIBAddr:", own_buf, 12) == 0) | |
1891 | { | |
1892 | char *annex; | |
1893 | int n; | |
1894 | CORE_ADDR tlb; | |
1895 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
1896 | ||
1897 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
1898 | if (n == 1) | |
1899 | { | |
c6f46ca0 | 1900 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
1901 | return; |
1902 | } | |
1903 | else if (n == 0) | |
1904 | { | |
1905 | write_enn (own_buf); | |
1906 | return; | |
1907 | } | |
1908 | return; | |
1909 | } | |
1910 | ||
c74d0ad8 DJ |
1911 | /* Handle "monitor" commands. */ |
1912 | if (strncmp ("qRcmd,", own_buf, 6) == 0) | |
1913 | { | |
aef93bd7 | 1914 | char *mon = malloc (PBUFSIZ); |
c74d0ad8 DJ |
1915 | int len = strlen (own_buf + 6); |
1916 | ||
aef93bd7 DE |
1917 | if (mon == NULL) |
1918 | { | |
1919 | write_enn (own_buf); | |
1920 | return; | |
1921 | } | |
1922 | ||
d41b6bb4 | 1923 | if ((len % 2) != 0 || unhexify (mon, own_buf + 6, len / 2) != len / 2) |
c74d0ad8 DJ |
1924 | { |
1925 | write_enn (own_buf); | |
1926 | free (mon); | |
1927 | return; | |
1928 | } | |
1929 | mon[len / 2] = '\0'; | |
1930 | ||
1931 | write_ok (own_buf); | |
1932 | ||
cdbfd419 PP |
1933 | if (the_target->handle_monitor_command == NULL |
1934 | || (*the_target->handle_monitor_command) (mon) == 0) | |
1935 | /* Default processing. */ | |
d73f2619 | 1936 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
1937 | |
1938 | free (mon); | |
1939 | return; | |
1940 | } | |
1941 | ||
493e2a69 MS |
1942 | if (strncmp ("qSearch:memory:", own_buf, |
1943 | sizeof ("qSearch:memory:") - 1) == 0) | |
08388c79 DE |
1944 | { |
1945 | require_running (own_buf); | |
1946 | handle_search_memory (own_buf, packet_len); | |
1947 | return; | |
1948 | } | |
1949 | ||
95954743 PA |
1950 | if (strcmp (own_buf, "qAttached") == 0 |
1951 | || strncmp (own_buf, "qAttached:", sizeof ("qAttached:") - 1) == 0) | |
0b16c5cf | 1952 | { |
95954743 PA |
1953 | struct process_info *process; |
1954 | ||
1955 | if (own_buf[sizeof ("qAttached") - 1]) | |
1956 | { | |
1957 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
1958 | process = (struct process_info *) | |
1959 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
1960 | } | |
1961 | else | |
1962 | { | |
1963 | require_running (own_buf); | |
1964 | process = current_process (); | |
1965 | } | |
1966 | ||
1967 | if (process == NULL) | |
1968 | { | |
1969 | write_enn (own_buf); | |
1970 | return; | |
1971 | } | |
1972 | ||
1973 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
1974 | return; |
1975 | } | |
1976 | ||
30ba68cb MS |
1977 | if (strncmp ("qCRC:", own_buf, 5) == 0) |
1978 | { | |
1979 | /* CRC check (compare-section). */ | |
1980 | char *comma; | |
aca22551 | 1981 | ULONGEST base; |
30ba68cb MS |
1982 | int len; |
1983 | unsigned long long crc; | |
1984 | ||
1985 | require_running (own_buf); | |
aca22551 | 1986 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
1987 | if (*comma++ != ',') |
1988 | { | |
1989 | write_enn (own_buf); | |
1990 | return; | |
1991 | } | |
1992 | len = strtoul (comma, NULL, 16); | |
1993 | crc = crc32 (base, len, 0xffffffff); | |
1994 | /* Check for memory failure. */ | |
1995 | if (crc == (unsigned long long) -1) | |
1996 | { | |
1997 | write_enn (own_buf); | |
1998 | return; | |
1999 | } | |
2000 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2001 | return; | |
2002 | } | |
2003 | ||
d08aafef PA |
2004 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2005 | return; | |
2006 | ||
219f2f23 PA |
2007 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2008 | return; | |
2009 | ||
ce3a066d DJ |
2010 | /* Otherwise we didn't know what packet it was. Say we didn't |
2011 | understand it. */ | |
2012 | own_buf[0] = 0; | |
2013 | } | |
2014 | ||
ce1a5b52 PA |
2015 | static void gdb_wants_all_threads_stopped (void); |
2016 | ||
64386c31 DJ |
2017 | /* Parse vCont packets. */ |
2018 | void | |
5b1c542e | 2019 | handle_v_cont (char *own_buf) |
64386c31 DJ |
2020 | { |
2021 | char *p, *q; | |
2022 | int n = 0, i = 0; | |
2bd7c093 | 2023 | struct thread_resume *resume_info; |
95954743 | 2024 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
2025 | |
2026 | /* Count the number of semicolons in the packet. There should be one | |
2027 | for every action. */ | |
2028 | p = &own_buf[5]; | |
2029 | while (p) | |
2030 | { | |
2031 | n++; | |
2032 | p++; | |
2033 | p = strchr (p, ';'); | |
2034 | } | |
2bd7c093 PA |
2035 | |
2036 | resume_info = malloc (n * sizeof (resume_info[0])); | |
aef93bd7 DE |
2037 | if (resume_info == NULL) |
2038 | goto err; | |
64386c31 | 2039 | |
64386c31 | 2040 | p = &own_buf[5]; |
64386c31 DJ |
2041 | while (*p) |
2042 | { | |
2043 | p++; | |
2044 | ||
c2d6af84 PA |
2045 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2046 | ||
64386c31 | 2047 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2048 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2049 | else if (p[0] == 'r') |
2050 | resume_info[i].kind = resume_step; | |
64386c31 | 2051 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2052 | resume_info[i].kind = resume_continue; |
2053 | else if (p[0] == 't') | |
2054 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2055 | else |
2056 | goto err; | |
2057 | ||
2058 | if (p[0] == 'S' || p[0] == 'C') | |
2059 | { | |
2060 | int sig; | |
2061 | sig = strtol (p + 1, &q, 16); | |
2062 | if (p == q) | |
2063 | goto err; | |
2064 | p = q; | |
2065 | ||
2ea28649 | 2066 | if (!gdb_signal_to_host_p (sig)) |
64386c31 | 2067 | goto err; |
2ea28649 | 2068 | resume_info[i].sig = gdb_signal_to_host (sig); |
64386c31 | 2069 | } |
c2d6af84 PA |
2070 | else if (p[0] == 'r') |
2071 | { | |
6740dc9c | 2072 | ULONGEST addr; |
c2d6af84 | 2073 | |
6740dc9c PA |
2074 | p = unpack_varlen_hex (p + 1, &addr); |
2075 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2076 | |
6740dc9c PA |
2077 | if (*p != ',') |
2078 | goto err; | |
c2d6af84 | 2079 | |
6740dc9c PA |
2080 | p = unpack_varlen_hex (p + 1, &addr); |
2081 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2082 | } |
64386c31 DJ |
2083 | else |
2084 | { | |
64386c31 DJ |
2085 | p = p + 1; |
2086 | } | |
2087 | ||
2088 | if (p[0] == 0) | |
2089 | { | |
95954743 | 2090 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2091 | default_action = resume_info[i]; |
2092 | ||
2093 | /* Note: we don't increment i here, we'll overwrite this entry | |
2094 | the next time through. */ | |
2095 | } | |
2096 | else if (p[0] == ':') | |
2097 | { | |
95954743 | 2098 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2099 | |
64386c31 DJ |
2100 | if (p == q) |
2101 | goto err; | |
2102 | p = q; | |
2103 | if (p[0] != ';' && p[0] != 0) | |
2104 | goto err; | |
2105 | ||
95954743 | 2106 | resume_info[i].thread = ptid; |
a06660f7 | 2107 | |
64386c31 DJ |
2108 | i++; |
2109 | } | |
2110 | } | |
2111 | ||
2bd7c093 PA |
2112 | if (i < n) |
2113 | resume_info[i] = default_action; | |
64386c31 | 2114 | |
122f36ef PA |
2115 | /* `cont_thread' is still used in occasional places in the backend, |
2116 | to implement single-thread scheduler-locking. Doesn't make sense | |
0c9070b3 YQ |
2117 | to set it if we see a stop request, or a wildcard action (one |
2118 | with '-1' (all threads), or 'pPID.-1' (all threads of PID)). */ | |
bd99dc85 | 2119 | if (n == 1 |
122f36ef PA |
2120 | && !(ptid_equal (resume_info[0].thread, minus_one_ptid) |
2121 | || ptid_get_lwp (resume_info[0].thread) == -1) | |
bd99dc85 | 2122 | && resume_info[0].kind != resume_stop) |
64386c31 DJ |
2123 | cont_thread = resume_info[0].thread; |
2124 | else | |
95954743 | 2125 | cont_thread = minus_one_ptid; |
dc3f8883 | 2126 | set_desired_inferior (0); |
64386c31 | 2127 | |
bd99dc85 PA |
2128 | if (!non_stop) |
2129 | enable_async_io (); | |
2130 | ||
2bd7c093 | 2131 | (*the_target->resume) (resume_info, n); |
64386c31 DJ |
2132 | |
2133 | free (resume_info); | |
2134 | ||
bd99dc85 PA |
2135 | if (non_stop) |
2136 | write_ok (own_buf); | |
2137 | else | |
2138 | { | |
95954743 | 2139 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 2140 | |
d20a8ad9 PA |
2141 | if (last_status.kind != TARGET_WAITKIND_EXITED |
2142 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
2143 | current_inferior->last_status = last_status; | |
2144 | ||
ce1a5b52 PA |
2145 | /* From the client's perspective, all-stop mode always stops all |
2146 | threads implicitly (and the target backend has already done | |
2147 | so by now). Tag all threads as "want-stopped", so we don't | |
2148 | resume them implicitly without the client telling us to. */ | |
2149 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
2150 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2151 | disable_async_io (); | |
6bd31874 JB |
2152 | |
2153 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2154 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2155 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 | 2156 | } |
64386c31 DJ |
2157 | return; |
2158 | ||
2159 | err: | |
255e7678 | 2160 | write_enn (own_buf); |
64386c31 DJ |
2161 | free (resume_info); |
2162 | return; | |
2163 | } | |
2164 | ||
2d717e4f DJ |
2165 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
2166 | int | |
5b1c542e | 2167 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
2168 | { |
2169 | int pid; | |
2170 | ||
2171 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2172 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2173 | { |
aeba519e PA |
2174 | /* Don't report shared library events after attaching, even if |
2175 | some libraries are preloaded. GDB will always poll the | |
2176 | library list. Avoids the "stopped by shared library event" | |
2177 | notice on the GDB side. */ | |
2178 | dlls_changed = 0; | |
bd99dc85 PA |
2179 | |
2180 | if (non_stop) | |
2181 | { | |
2182 | /* In non-stop, we don't send a resume reply. Stop events | |
2183 | will follow up using the normal notification | |
2184 | mechanism. */ | |
2185 | write_ok (own_buf); | |
2186 | } | |
2187 | else | |
2188 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2189 | ||
2d717e4f DJ |
2190 | return 1; |
2191 | } | |
2192 | else | |
2193 | { | |
2194 | write_enn (own_buf); | |
2195 | return 0; | |
2196 | } | |
2197 | } | |
2198 | ||
2199 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2200 | static int | |
5b1c542e | 2201 | handle_v_run (char *own_buf) |
2d717e4f | 2202 | { |
aef93bd7 | 2203 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
2204 | int i, new_argc; |
2205 | ||
2206 | new_argc = 0; | |
2207 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2208 | { | |
2209 | p++; | |
2210 | new_argc++; | |
2211 | } | |
2212 | ||
aef93bd7 DE |
2213 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
2214 | if (new_argv == NULL) | |
2215 | { | |
2216 | write_enn (own_buf); | |
2217 | return 0; | |
2218 | } | |
2219 | ||
2d717e4f DJ |
2220 | i = 0; |
2221 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
2222 | { | |
2223 | next_p = strchr (p, ';'); | |
2224 | if (next_p == NULL) | |
2225 | next_p = p + strlen (p); | |
2226 | ||
2227 | if (i == 0 && p == next_p) | |
2228 | new_argv[i] = NULL; | |
2229 | else | |
2230 | { | |
aef93bd7 | 2231 | /* FIXME: Fail request if out of memory instead of dying. */ |
bca929d3 | 2232 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
2d717e4f DJ |
2233 | unhexify (new_argv[i], p, (next_p - p) / 2); |
2234 | new_argv[i][(next_p - p) / 2] = '\0'; | |
2235 | } | |
2236 | ||
2237 | if (*next_p) | |
2238 | next_p++; | |
2239 | i++; | |
2240 | } | |
2241 | new_argv[i] = NULL; | |
2242 | ||
2243 | if (new_argv[0] == NULL) | |
2244 | { | |
f142445f DJ |
2245 | /* GDB didn't specify a program to run. Use the program from the |
2246 | last run with the new argument list. */ | |
9b710a42 | 2247 | |
2d717e4f DJ |
2248 | if (program_argv == NULL) |
2249 | { | |
2250 | write_enn (own_buf); | |
b2c04452 | 2251 | freeargv (new_argv); |
2d717e4f DJ |
2252 | return 0; |
2253 | } | |
2254 | ||
aef93bd7 DE |
2255 | new_argv[0] = strdup (program_argv[0]); |
2256 | if (new_argv[0] == NULL) | |
2257 | { | |
aef93bd7 | 2258 | write_enn (own_buf); |
b2c04452 | 2259 | freeargv (new_argv); |
aef93bd7 | 2260 | return 0; |
1b3f6016 | 2261 | } |
2d717e4f | 2262 | } |
f142445f | 2263 | |
aef93bd7 DE |
2264 | /* Free the old argv and install the new one. */ |
2265 | freeargv (program_argv); | |
f142445f | 2266 | program_argv = new_argv; |
2d717e4f | 2267 | |
5b1c542e PA |
2268 | start_inferior (program_argv); |
2269 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 2270 | { |
5b1c542e | 2271 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
2272 | |
2273 | /* In non-stop, sending a resume reply doesn't set the general | |
2274 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
2275 | query which is the main thread of the new inferior. */ | |
2276 | if (non_stop) | |
2277 | general_thread = last_ptid; | |
2278 | ||
2d717e4f DJ |
2279 | return 1; |
2280 | } | |
2281 | else | |
2282 | { | |
2283 | write_enn (own_buf); | |
2284 | return 0; | |
2285 | } | |
2286 | } | |
2287 | ||
95954743 PA |
2288 | /* Kill process. Return 1 if successful, 0 if failure. */ |
2289 | int | |
2290 | handle_v_kill (char *own_buf) | |
2291 | { | |
2292 | int pid; | |
2293 | char *p = &own_buf[6]; | |
0f54c268 PM |
2294 | if (multi_process) |
2295 | pid = strtol (p, NULL, 16); | |
2296 | else | |
2297 | pid = signal_pid; | |
95954743 PA |
2298 | if (pid != 0 && kill_inferior (pid) == 0) |
2299 | { | |
2300 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
a493e3e2 | 2301 | last_status.value.sig = GDB_SIGNAL_KILL; |
95954743 PA |
2302 | last_ptid = pid_to_ptid (pid); |
2303 | discard_queued_stop_replies (pid); | |
2304 | write_ok (own_buf); | |
2305 | return 1; | |
2306 | } | |
2307 | else | |
2308 | { | |
2309 | write_enn (own_buf); | |
2310 | return 0; | |
2311 | } | |
2312 | } | |
2313 | ||
64386c31 DJ |
2314 | /* Handle all of the extended 'v' packets. */ |
2315 | void | |
5b1c542e | 2316 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2317 | { |
db42f210 | 2318 | if (!disable_packet_vCont) |
64386c31 | 2319 | { |
db42f210 PA |
2320 | if (strncmp (own_buf, "vCont;", 6) == 0) |
2321 | { | |
2322 | require_running (own_buf); | |
5b1c542e | 2323 | handle_v_cont (own_buf); |
db42f210 PA |
2324 | return; |
2325 | } | |
64386c31 | 2326 | |
db42f210 PA |
2327 | if (strncmp (own_buf, "vCont?", 6) == 0) |
2328 | { | |
bd99dc85 | 2329 | strcpy (own_buf, "vCont;c;C;s;S;t"); |
c2d6af84 PA |
2330 | if (target_supports_range_stepping ()) |
2331 | { | |
2332 | own_buf = own_buf + strlen (own_buf); | |
2333 | strcpy (own_buf, ";r"); | |
2334 | } | |
db42f210 PA |
2335 | return; |
2336 | } | |
64386c31 DJ |
2337 | } |
2338 | ||
a6b151f1 DJ |
2339 | if (strncmp (own_buf, "vFile:", 6) == 0 |
2340 | && handle_vFile (own_buf, packet_len, new_packet_len)) | |
2341 | return; | |
2342 | ||
2d717e4f DJ |
2343 | if (strncmp (own_buf, "vAttach;", 8) == 0) |
2344 | { | |
901f9912 | 2345 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2346 | { |
fd96d250 PA |
2347 | fprintf (stderr, "Already debugging a process\n"); |
2348 | write_enn (own_buf); | |
2349 | return; | |
2d717e4f | 2350 | } |
5b1c542e | 2351 | handle_v_attach (own_buf); |
2d717e4f DJ |
2352 | return; |
2353 | } | |
2354 | ||
2355 | if (strncmp (own_buf, "vRun;", 5) == 0) | |
2356 | { | |
901f9912 | 2357 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2358 | { |
fd96d250 PA |
2359 | fprintf (stderr, "Already debugging a process\n"); |
2360 | write_enn (own_buf); | |
2361 | return; | |
2d717e4f | 2362 | } |
5b1c542e | 2363 | handle_v_run (own_buf); |
2d717e4f DJ |
2364 | return; |
2365 | } | |
2366 | ||
95954743 PA |
2367 | if (strncmp (own_buf, "vKill;", 6) == 0) |
2368 | { | |
2369 | if (!target_running ()) | |
2370 | { | |
2371 | fprintf (stderr, "No process to kill\n"); | |
2372 | write_enn (own_buf); | |
2373 | return; | |
2374 | } | |
2375 | handle_v_kill (own_buf); | |
2376 | return; | |
2377 | } | |
2378 | ||
14a00470 YQ |
2379 | if (handle_notif_ack (own_buf, packet_len)) |
2380 | return; | |
bd99dc85 | 2381 | |
64386c31 DJ |
2382 | /* Otherwise we didn't know what packet it was. Say we didn't |
2383 | understand it. */ | |
2384 | own_buf[0] = 0; | |
2385 | return; | |
2386 | } | |
2387 | ||
bd99dc85 PA |
2388 | /* Resume inferior and wait for another event. In non-stop mode, |
2389 | don't really wait here, but return immediatelly to the event | |
2390 | loop. */ | |
1fd7cdc2 | 2391 | static void |
5b1c542e | 2392 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
2393 | { |
2394 | struct thread_resume resume_info[2]; | |
2395 | int n = 0; | |
2bd7c093 | 2396 | int valid_cont_thread; |
a20d5e98 DJ |
2397 | |
2398 | set_desired_inferior (0); | |
64386c31 | 2399 | |
95954743 PA |
2400 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
2401 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
2402 | |
2403 | if (step || sig || valid_cont_thread) | |
64386c31 | 2404 | { |
fbd5db48 | 2405 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
2406 | if (step) |
2407 | resume_info[0].kind = resume_step; | |
2408 | else | |
2409 | resume_info[0].kind = resume_continue; | |
64386c31 | 2410 | resume_info[0].sig = sig; |
64386c31 DJ |
2411 | n++; |
2412 | } | |
2bd7c093 PA |
2413 | |
2414 | if (!valid_cont_thread) | |
2415 | { | |
95954743 | 2416 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 2417 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
2418 | resume_info[n].sig = 0; |
2419 | n++; | |
2420 | } | |
64386c31 | 2421 | |
bd99dc85 PA |
2422 | if (!non_stop) |
2423 | enable_async_io (); | |
2424 | ||
2bd7c093 | 2425 | (*the_target->resume) (resume_info, n); |
bd99dc85 PA |
2426 | |
2427 | if (non_stop) | |
2428 | write_ok (own_buf); | |
2429 | else | |
2430 | { | |
95954743 | 2431 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
d20a8ad9 PA |
2432 | |
2433 | if (last_status.kind != TARGET_WAITKIND_EXITED | |
2434 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
2435 | { | |
2436 | current_inferior->last_resume_kind = resume_stop; | |
2437 | current_inferior->last_status = last_status; | |
2438 | } | |
2439 | ||
bd99dc85 PA |
2440 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2441 | disable_async_io (); | |
6bd31874 JB |
2442 | |
2443 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2444 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2445 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 PA |
2446 | } |
2447 | } | |
2448 | ||
2449 | /* Callback for for_each_inferior. Make a new stop reply for each | |
2450 | stopped thread. */ | |
2451 | ||
95954743 PA |
2452 | static int |
2453 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 2454 | { |
8336d594 | 2455 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 2456 | |
8336d594 PA |
2457 | /* For now, assume targets that don't have this callback also don't |
2458 | manage the thread's last_status field. */ | |
2459 | if (the_target->thread_stopped == NULL) | |
95954743 | 2460 | { |
14a00470 YQ |
2461 | struct vstop_notif *new_notif = xmalloc (sizeof (*new_notif)); |
2462 | ||
2463 | new_notif->ptid = entry->id; | |
2464 | new_notif->status = thread->last_status; | |
8336d594 PA |
2465 | /* Pass the last stop reply back to GDB, but don't notify |
2466 | yet. */ | |
14a00470 YQ |
2467 | notif_event_enque (¬if_stop, |
2468 | (struct notif_event *) new_notif); | |
8336d594 PA |
2469 | } |
2470 | else | |
2471 | { | |
2472 | if (thread_stopped (thread)) | |
2473 | { | |
2474 | if (debug_threads) | |
493e2a69 MS |
2475 | fprintf (stderr, |
2476 | "Reporting thread %s as already stopped with %s\n", | |
8336d594 PA |
2477 | target_pid_to_str (entry->id), |
2478 | target_waitstatus_to_string (&thread->last_status)); | |
2479 | ||
d20a8ad9 PA |
2480 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
2481 | ||
8336d594 PA |
2482 | /* Pass the last stop reply back to GDB, but don't notify |
2483 | yet. */ | |
2484 | queue_stop_reply (entry->id, &thread->last_status); | |
2485 | } | |
95954743 PA |
2486 | } |
2487 | ||
2488 | return 0; | |
64386c31 DJ |
2489 | } |
2490 | ||
ce1a5b52 PA |
2491 | /* Set this inferior threads's state as "want-stopped". We won't |
2492 | resume this thread until the client gives us another action for | |
2493 | it. */ | |
8336d594 PA |
2494 | |
2495 | static void | |
2496 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
2497 | { | |
2498 | struct thread_info *thread = (struct thread_info *) entry; | |
2499 | ||
2500 | thread->last_resume_kind = resume_stop; | |
2501 | ||
2502 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
2503 | { | |
ce1a5b52 PA |
2504 | /* Most threads are stopped implicitly (all-stop); tag that with |
2505 | signal 0. */ | |
8336d594 | 2506 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 2507 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
2508 | } |
2509 | } | |
2510 | ||
2511 | /* Set all threads' states as "want-stopped". */ | |
2512 | ||
2513 | static void | |
2514 | gdb_wants_all_threads_stopped (void) | |
2515 | { | |
2516 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
2517 | } | |
2518 | ||
2519 | /* Clear the gdb_detached flag of every process. */ | |
2520 | ||
2521 | static void | |
2522 | gdb_reattached_process (struct inferior_list_entry *entry) | |
2523 | { | |
2524 | struct process_info *process = (struct process_info *) entry; | |
2525 | ||
2526 | process->gdb_detached = 0; | |
2527 | } | |
2528 | ||
5b1c542e PA |
2529 | /* Status handler for the '?' packet. */ |
2530 | ||
2531 | static void | |
2532 | handle_status (char *own_buf) | |
2533 | { | |
8336d594 PA |
2534 | /* GDB is connected, don't forward events to the target anymore. */ |
2535 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
2536 | |
2537 | /* In non-stop mode, we must send a stop reply for each stopped | |
2538 | thread. In all-stop mode, just send one for the first stopped | |
2539 | thread we find. */ | |
2540 | ||
2541 | if (non_stop) | |
2542 | { | |
8336d594 PA |
2543 | discard_queued_stop_replies (-1); |
2544 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); | |
bd99dc85 PA |
2545 | |
2546 | /* The first is sent immediatly. OK is sent if there is no | |
2547 | stopped thread, which is the same handling of the vStopped | |
2548 | packet (by design). */ | |
14a00470 | 2549 | notif_write_event (¬if_stop, own_buf); |
bd99dc85 | 2550 | } |
5b1c542e | 2551 | else |
bd99dc85 | 2552 | { |
7984d532 | 2553 | pause_all (0); |
fa593d66 | 2554 | stabilize_threads (); |
8336d594 PA |
2555 | gdb_wants_all_threads_stopped (); |
2556 | ||
bd99dc85 | 2557 | if (all_threads.head) |
8336d594 PA |
2558 | { |
2559 | struct target_waitstatus status; | |
2560 | ||
2561 | status.kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 2562 | status.value.sig = GDB_SIGNAL_TRAP; |
8336d594 PA |
2563 | prepare_resume_reply (own_buf, |
2564 | all_threads.head->id, &status); | |
2565 | } | |
bd99dc85 PA |
2566 | else |
2567 | strcpy (own_buf, "W00"); | |
2568 | } | |
5b1c542e PA |
2569 | } |
2570 | ||
dd24457d DJ |
2571 | static void |
2572 | gdbserver_version (void) | |
2573 | { | |
c16158bc | 2574 | printf ("GNU gdbserver %s%s\n" |
b9786c74 | 2575 | "Copyright (C) 2013 Free Software Foundation, Inc.\n" |
493e2a69 MS |
2576 | "gdbserver is free software, covered by the " |
2577 | "GNU General Public License.\n" | |
dd24457d | 2578 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 2579 | PKGVERSION, version, host_name); |
dd24457d DJ |
2580 | } |
2581 | ||
0bc68c49 | 2582 | static void |
c16158bc | 2583 | gdbserver_usage (FILE *stream) |
0bc68c49 | 2584 | { |
c16158bc JM |
2585 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
2586 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
2587 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
2588 | "\n" | |
2589 | "COMM may either be a tty device (for serial debugging), or \n" | |
2590 | "HOST:PORT to listen for a TCP connection.\n" | |
2591 | "\n" | |
2592 | "Options:\n" | |
62709adf PA |
2593 | " --debug Enable general debugging output.\n" |
2594 | " --remote-debug Enable remote protocol debugging output.\n" | |
2595 | " --version Display version information and exit.\n" | |
03f2bd59 JK |
2596 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" |
2597 | " --once Exit after the first connection has " | |
2598 | "closed.\n"); | |
c16158bc JM |
2599 | if (REPORT_BUGS_TO[0] && stream == stdout) |
2600 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
2601 | } |
2602 | ||
db42f210 PA |
2603 | static void |
2604 | gdbserver_show_disableable (FILE *stream) | |
2605 | { | |
2606 | fprintf (stream, "Disableable packets:\n" | |
2607 | " vCont \tAll vCont packets\n" | |
2608 | " qC \tQuerying the current thread\n" | |
2609 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
2610 | " Tthread \tPassing the thread specifier in the " |
2611 | "T stop reply packet\n" | |
db42f210 PA |
2612 | " threads \tAll of the above\n"); |
2613 | } | |
2614 | ||
2615 | ||
2d717e4f DJ |
2616 | #undef require_running |
2617 | #define require_running(BUF) \ | |
2618 | if (!target_running ()) \ | |
2619 | { \ | |
2620 | write_enn (BUF); \ | |
2621 | break; \ | |
2622 | } | |
2623 | ||
95954743 PA |
2624 | static int |
2625 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
2626 | { | |
2627 | int pid = * (int *) args; | |
2628 | ||
2629 | if (ptid_get_pid (entry->id) == pid) | |
2630 | return 1; | |
2631 | ||
2632 | return 0; | |
2633 | } | |
2634 | ||
2635 | static void | |
2636 | kill_inferior_callback (struct inferior_list_entry *entry) | |
2637 | { | |
2638 | struct process_info *process = (struct process_info *) entry; | |
2639 | int pid = ptid_get_pid (process->head.id); | |
2640 | ||
2641 | kill_inferior (pid); | |
2642 | discard_queued_stop_replies (pid); | |
2643 | } | |
2644 | ||
9f767825 DE |
2645 | /* Callback for for_each_inferior to detach or kill the inferior, |
2646 | depending on whether we attached to it or not. | |
2647 | We inform the user whether we're detaching or killing the process | |
2648 | as this is only called when gdbserver is about to exit. */ | |
2649 | ||
95954743 PA |
2650 | static void |
2651 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
2652 | { | |
2653 | struct process_info *process = (struct process_info *) entry; | |
2654 | int pid = ptid_get_pid (process->head.id); | |
2655 | ||
2656 | if (process->attached) | |
2657 | detach_inferior (pid); | |
2658 | else | |
2659 | kill_inferior (pid); | |
2660 | ||
2661 | discard_queued_stop_replies (pid); | |
2662 | } | |
2663 | ||
9f767825 DE |
2664 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
2665 | the pids of started inferiors. */ | |
2666 | ||
2667 | static void | |
2668 | print_started_pid (struct inferior_list_entry *entry) | |
2669 | { | |
2670 | struct process_info *process = (struct process_info *) entry; | |
2671 | ||
2672 | if (! process->attached) | |
2673 | { | |
2674 | int pid = ptid_get_pid (process->head.id); | |
2675 | fprintf (stderr, " %d", pid); | |
2676 | } | |
2677 | } | |
2678 | ||
2679 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
2680 | the pids of attached inferiors. */ | |
2681 | ||
2682 | static void | |
2683 | print_attached_pid (struct inferior_list_entry *entry) | |
2684 | { | |
2685 | struct process_info *process = (struct process_info *) entry; | |
2686 | ||
2687 | if (process->attached) | |
2688 | { | |
2689 | int pid = ptid_get_pid (process->head.id); | |
2690 | fprintf (stderr, " %d", pid); | |
2691 | } | |
2692 | } | |
2693 | ||
2694 | /* Call this when exiting gdbserver with possible inferiors that need | |
2695 | to be killed or detached from. */ | |
2696 | ||
2697 | static void | |
2698 | detach_or_kill_for_exit (void) | |
2699 | { | |
2700 | /* First print a list of the inferiors we will be killing/detaching. | |
2701 | This is to assist the user, for example, in case the inferior unexpectedly | |
2702 | dies after we exit: did we screw up or did the inferior exit on its own? | |
2703 | Having this info will save some head-scratching. */ | |
2704 | ||
2705 | if (have_started_inferiors_p ()) | |
2706 | { | |
2707 | fprintf (stderr, "Killing process(es):"); | |
2708 | for_each_inferior (&all_processes, print_started_pid); | |
2709 | fprintf (stderr, "\n"); | |
2710 | } | |
2711 | if (have_attached_inferiors_p ()) | |
2712 | { | |
2713 | fprintf (stderr, "Detaching process(es):"); | |
2714 | for_each_inferior (&all_processes, print_attached_pid); | |
2715 | fprintf (stderr, "\n"); | |
2716 | } | |
2717 | ||
2718 | /* Now we can kill or detach the inferiors. */ | |
2719 | ||
2720 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
2721 | } | |
2722 | ||
c906108c | 2723 | int |
da85418c | 2724 | main (int argc, char *argv[]) |
c906108c | 2725 | { |
0729219d DJ |
2726 | int bad_attach; |
2727 | int pid; | |
2d717e4f DJ |
2728 | char *arg_end, *port; |
2729 | char **next_arg = &argv[1]; | |
89dc0afd JK |
2730 | volatile int multi_mode = 0; |
2731 | volatile int attach = 0; | |
2d717e4f | 2732 | int was_running; |
c906108c | 2733 | |
2d717e4f | 2734 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 2735 | { |
2d717e4f DJ |
2736 | if (strcmp (*next_arg, "--version") == 0) |
2737 | { | |
2738 | gdbserver_version (); | |
2739 | exit (0); | |
2740 | } | |
2741 | else if (strcmp (*next_arg, "--help") == 0) | |
2742 | { | |
c16158bc | 2743 | gdbserver_usage (stdout); |
2d717e4f DJ |
2744 | exit (0); |
2745 | } | |
2746 | else if (strcmp (*next_arg, "--attach") == 0) | |
2747 | attach = 1; | |
2748 | else if (strcmp (*next_arg, "--multi") == 0) | |
2749 | multi_mode = 1; | |
ccd213ac DJ |
2750 | else if (strcmp (*next_arg, "--wrapper") == 0) |
2751 | { | |
2752 | next_arg++; | |
2753 | ||
2754 | wrapper_argv = next_arg; | |
2755 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
2756 | next_arg++; | |
2757 | ||
2758 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
2759 | { | |
c16158bc | 2760 | gdbserver_usage (stderr); |
ccd213ac DJ |
2761 | exit (1); |
2762 | } | |
2763 | ||
2764 | /* Consume the "--". */ | |
2765 | *next_arg = NULL; | |
2766 | } | |
2d717e4f DJ |
2767 | else if (strcmp (*next_arg, "--debug") == 0) |
2768 | debug_threads = 1; | |
62709adf PA |
2769 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
2770 | remote_debug = 1; | |
db42f210 PA |
2771 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
2772 | { | |
2773 | gdbserver_show_disableable (stdout); | |
2774 | exit (0); | |
2775 | } | |
2776 | else if (strncmp (*next_arg, | |
2777 | "--disable-packet=", | |
2778 | sizeof ("--disable-packet=") - 1) == 0) | |
2779 | { | |
2780 | char *packets, *tok; | |
2781 | ||
2782 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
2783 | for (tok = strtok (packets, ","); | |
2784 | tok != NULL; | |
2785 | tok = strtok (NULL, ",")) | |
2786 | { | |
2787 | if (strcmp ("vCont", tok) == 0) | |
2788 | disable_packet_vCont = 1; | |
2789 | else if (strcmp ("Tthread", tok) == 0) | |
2790 | disable_packet_Tthread = 1; | |
2791 | else if (strcmp ("qC", tok) == 0) | |
2792 | disable_packet_qC = 1; | |
2793 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
2794 | disable_packet_qfThreadInfo = 1; | |
2795 | else if (strcmp ("threads", tok) == 0) | |
2796 | { | |
2797 | disable_packet_vCont = 1; | |
2798 | disable_packet_Tthread = 1; | |
2799 | disable_packet_qC = 1; | |
2800 | disable_packet_qfThreadInfo = 1; | |
2801 | } | |
2802 | else | |
2803 | { | |
2804 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
2805 | tok); | |
2806 | gdbserver_show_disableable (stderr); | |
2807 | exit (1); | |
2808 | } | |
2809 | } | |
2810 | } | |
e0f9f062 DE |
2811 | else if (strcmp (*next_arg, "-") == 0) |
2812 | { | |
2813 | /* "-" specifies a stdio connection and is a form of port | |
2814 | specification. */ | |
2815 | *next_arg = STDIO_CONNECTION_NAME; | |
2816 | break; | |
2817 | } | |
03583c20 UW |
2818 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
2819 | disable_randomization = 1; | |
2820 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
2821 | disable_randomization = 0; | |
03f2bd59 JK |
2822 | else if (strcmp (*next_arg, "--once") == 0) |
2823 | run_once = 1; | |
2d717e4f DJ |
2824 | else |
2825 | { | |
2826 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
2827 | exit (1); | |
2828 | } | |
dd24457d | 2829 | |
2d717e4f DJ |
2830 | next_arg++; |
2831 | continue; | |
dd24457d DJ |
2832 | } |
2833 | ||
c5aa993b | 2834 | if (setjmp (toplevel)) |
c906108c | 2835 | { |
c5aa993b JM |
2836 | fprintf (stderr, "Exiting\n"); |
2837 | exit (1); | |
c906108c SS |
2838 | } |
2839 | ||
2d717e4f DJ |
2840 | port = *next_arg; |
2841 | next_arg++; | |
2842 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
2843 | { | |
c16158bc | 2844 | gdbserver_usage (stderr); |
2d717e4f DJ |
2845 | exit (1); |
2846 | } | |
2847 | ||
e0f9f062 DE |
2848 | /* We need to know whether the remote connection is stdio before |
2849 | starting the inferior. Inferiors created in this scenario have | |
2850 | stdin,stdout redirected. So do this here before we call | |
2851 | start_inferior. */ | |
2852 | remote_prepare (port); | |
2853 | ||
0729219d DJ |
2854 | bad_attach = 0; |
2855 | pid = 0; | |
2d717e4f DJ |
2856 | |
2857 | /* --attach used to come after PORT, so allow it there for | |
2858 | compatibility. */ | |
2859 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 2860 | { |
2d717e4f DJ |
2861 | attach = 1; |
2862 | next_arg++; | |
45b7b345 DJ |
2863 | } |
2864 | ||
2d717e4f DJ |
2865 | if (attach |
2866 | && (*next_arg == NULL | |
2867 | || (*next_arg)[0] == '\0' | |
2868 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
2869 | || *arg_end != '\0' | |
2870 | || next_arg[1] != NULL)) | |
2871 | bad_attach = 1; | |
2872 | ||
2873 | if (bad_attach) | |
dd24457d | 2874 | { |
c16158bc | 2875 | gdbserver_usage (stderr); |
dd24457d DJ |
2876 | exit (1); |
2877 | } | |
c906108c | 2878 | |
a20d5e98 | 2879 | initialize_async_io (); |
4ce44c66 | 2880 | initialize_low (); |
60f662b0 | 2881 | initialize_event_loop (); |
219f2f23 PA |
2882 | if (target_supports_tracepoints ()) |
2883 | initialize_tracepoint (); | |
4ce44c66 | 2884 | |
bca929d3 DE |
2885 | own_buf = xmalloc (PBUFSIZ + 1); |
2886 | mem_buf = xmalloc (PBUFSIZ); | |
0a30fbc4 | 2887 | |
2d717e4f | 2888 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 2889 | { |
2d717e4f DJ |
2890 | int i, n; |
2891 | ||
2892 | n = argc - (next_arg - argv); | |
bca929d3 | 2893 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
2d717e4f | 2894 | for (i = 0; i < n; i++) |
bca929d3 | 2895 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
2896 | program_argv[i] = NULL; |
2897 | ||
45b7b345 | 2898 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 2899 | start_inferior (program_argv); |
c906108c | 2900 | |
c588c53c MS |
2901 | /* We are now (hopefully) stopped at the first instruction of |
2902 | the target process. This assumes that the target process was | |
2903 | successfully created. */ | |
45b7b345 | 2904 | } |
2d717e4f DJ |
2905 | else if (pid != 0) |
2906 | { | |
5b1c542e | 2907 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
2908 | error ("Attaching not supported on this target"); |
2909 | ||
2910 | /* Otherwise succeeded. */ | |
2911 | } | |
45b7b345 DJ |
2912 | else |
2913 | { | |
5b1c542e PA |
2914 | last_status.kind = TARGET_WAITKIND_EXITED; |
2915 | last_status.value.integer = 0; | |
95954743 | 2916 | last_ptid = minus_one_ptid; |
45b7b345 | 2917 | } |
c906108c | 2918 | |
14a00470 YQ |
2919 | initialize_notif (); |
2920 | ||
311de423 PA |
2921 | /* Don't report shared library events on the initial connection, |
2922 | even if some libraries are preloaded. Avoids the "stopped by | |
2923 | shared library event" notice on gdb side. */ | |
2924 | dlls_changed = 0; | |
2925 | ||
8264bb58 DJ |
2926 | if (setjmp (toplevel)) |
2927 | { | |
f128d5e9 PA |
2928 | /* If something fails and longjmps while detaching or killing |
2929 | inferiors, we'd end up here again, stuck in an infinite loop | |
2930 | trap. Be sure that if that happens, we exit immediately | |
2931 | instead. */ | |
01b17894 PA |
2932 | if (setjmp (toplevel) == 0) |
2933 | detach_or_kill_for_exit (); | |
2934 | else | |
2935 | fprintf (stderr, "Detach or kill failed. Exiting\n"); | |
8264bb58 DJ |
2936 | exit (1); |
2937 | } | |
2938 | ||
5b1c542e PA |
2939 | if (last_status.kind == TARGET_WAITKIND_EXITED |
2940 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
2941 | was_running = 0; |
2942 | else | |
2943 | was_running = 1; | |
2944 | ||
2945 | if (!was_running && !multi_mode) | |
c588c53c | 2946 | { |
2d717e4f | 2947 | fprintf (stderr, "No program to debug. GDBserver exiting.\n"); |
c588c53c MS |
2948 | exit (1); |
2949 | } | |
2950 | ||
c906108c SS |
2951 | while (1) |
2952 | { | |
a6f3e723 | 2953 | noack_mode = 0; |
95954743 | 2954 | multi_process = 0; |
8336d594 PA |
2955 | /* Be sure we're out of tfind mode. */ |
2956 | current_traceframe = -1; | |
bd99dc85 | 2957 | |
2d717e4f | 2958 | remote_open (port); |
c906108c | 2959 | |
2d717e4f DJ |
2960 | if (setjmp (toplevel) != 0) |
2961 | { | |
2962 | /* An error occurred. */ | |
2963 | if (response_needed) | |
2964 | { | |
2965 | write_enn (own_buf); | |
2966 | putpkt (own_buf); | |
2967 | } | |
2968 | } | |
2969 | ||
bd99dc85 | 2970 | /* Wait for events. This will return when all event sources are |
8336d594 | 2971 | removed from the event loop. */ |
bd99dc85 PA |
2972 | start_event_loop (); |
2973 | ||
2974 | /* If an exit was requested (using the "monitor exit" command), | |
2975 | terminate now. The only other way to get here is for | |
2976 | getpkt to fail; close the connection and reopen it at the | |
2977 | top of the loop. */ | |
2978 | ||
03f2bd59 | 2979 | if (exit_requested || run_once) |
c906108c | 2980 | { |
01b17894 PA |
2981 | /* If something fails and longjmps while detaching or |
2982 | killing inferiors, we'd end up here again, stuck in an | |
2983 | infinite loop trap. Be sure that if that happens, we | |
2984 | exit immediately instead. */ | |
2985 | if (setjmp (toplevel) == 0) | |
2986 | { | |
2987 | detach_or_kill_for_exit (); | |
2988 | exit (0); | |
2989 | } | |
2990 | else | |
2991 | { | |
2992 | fprintf (stderr, "Detach or kill failed. Exiting\n"); | |
2993 | exit (1); | |
2994 | } | |
bd99dc85 | 2995 | } |
8336d594 PA |
2996 | |
2997 | fprintf (stderr, | |
2998 | "Remote side has terminated connection. " | |
2999 | "GDBserver will reopen the connection.\n"); | |
3000 | ||
3001 | if (tracing) | |
3002 | { | |
3003 | if (disconnected_tracing) | |
3004 | { | |
3005 | /* Try to enable non-stop/async mode, so we we can both | |
3006 | wait for an async socket accept, and handle async | |
3007 | target events simultaneously. There's also no point | |
3008 | either in having the target always stop all threads, | |
3009 | when we're going to pass signals down without | |
3010 | informing GDB. */ | |
3011 | if (!non_stop) | |
3012 | { | |
3013 | if (start_non_stop (1)) | |
3014 | non_stop = 1; | |
3015 | ||
3016 | /* Detaching implicitly resumes all threads; simply | |
3017 | disconnecting does not. */ | |
3018 | } | |
3019 | } | |
3020 | else | |
3021 | { | |
3022 | fprintf (stderr, | |
3023 | "Disconnected tracing disabled; stopping trace run.\n"); | |
3024 | stop_tracing (); | |
3025 | } | |
3026 | } | |
bd99dc85 PA |
3027 | } |
3028 | } | |
01f9e8fa | 3029 | |
9f3a5c85 LM |
3030 | /* Process options coming from Z packets for *point at address |
3031 | POINT_ADDR. PACKET is the packet buffer. *PACKET is updated | |
3032 | to point to the first char after the last processed option. */ | |
3033 | ||
3034 | static void | |
3035 | process_point_options (CORE_ADDR point_addr, char **packet) | |
3036 | { | |
3037 | char *dataptr = *packet; | |
d3ce09f5 | 3038 | int persist; |
9f3a5c85 LM |
3039 | |
3040 | /* Check if data has the correct format. */ | |
3041 | if (*dataptr != ';') | |
3042 | return; | |
3043 | ||
3044 | dataptr++; | |
3045 | ||
3046 | while (*dataptr) | |
3047 | { | |
d3ce09f5 SS |
3048 | if (*dataptr == ';') |
3049 | ++dataptr; | |
3050 | ||
3051 | if (*dataptr == 'X') | |
9f3a5c85 | 3052 | { |
d3ce09f5 | 3053 | /* Conditional expression. */ |
d171ca78 YQ |
3054 | if (debug_threads) |
3055 | fprintf (stderr, "Found breakpoint condition.\n"); | |
d3ce09f5 SS |
3056 | add_breakpoint_condition (point_addr, &dataptr); |
3057 | } | |
3058 | else if (strncmp (dataptr, "cmds:", strlen ("cmds:")) == 0) | |
3059 | { | |
3060 | dataptr += strlen ("cmds:"); | |
3061 | if (debug_threads) | |
3062 | fprintf (stderr, "Found breakpoint commands %s.\n", dataptr); | |
3063 | persist = (*dataptr == '1'); | |
3064 | dataptr += 2; | |
3065 | add_breakpoint_commands (point_addr, &dataptr, persist); | |
3066 | } | |
3067 | else | |
3068 | { | |
d3ce09f5 SS |
3069 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
3070 | *dataptr); | |
78a99e91 PA |
3071 | /* Skip tokens until we find one that we recognize. */ |
3072 | while (*dataptr && *dataptr != ';') | |
3073 | dataptr++; | |
9f3a5c85 | 3074 | } |
9f3a5c85 LM |
3075 | } |
3076 | *packet = dataptr; | |
3077 | } | |
3078 | ||
bd99dc85 PA |
3079 | /* Event loop callback that handles a serial event. The first byte in |
3080 | the serial buffer gets us here. We expect characters to arrive at | |
3081 | a brisk pace, so we read the rest of the packet with a blocking | |
3082 | getpkt call. */ | |
01f9e8fa | 3083 | |
8336d594 | 3084 | static int |
bd99dc85 PA |
3085 | process_serial_event (void) |
3086 | { | |
3087 | char ch; | |
3088 | int i = 0; | |
3089 | int signal; | |
3090 | unsigned int len; | |
764880b7 | 3091 | int res; |
bd99dc85 | 3092 | CORE_ADDR mem_addr; |
95954743 | 3093 | int pid; |
bd99dc85 PA |
3094 | unsigned char sig; |
3095 | int packet_len; | |
3096 | int new_packet_len = -1; | |
3097 | ||
3098 | /* Used to decide when gdbserver should exit in | |
3099 | multi-mode/remote. */ | |
3100 | static int have_ran = 0; | |
3101 | ||
3102 | if (!have_ran) | |
3103 | have_ran = target_running (); | |
3104 | ||
3105 | disable_async_io (); | |
3106 | ||
3107 | response_needed = 0; | |
3108 | packet_len = getpkt (own_buf); | |
3109 | if (packet_len <= 0) | |
3110 | { | |
bd99dc85 | 3111 | remote_close (); |
8336d594 PA |
3112 | /* Force an event loop break. */ |
3113 | return -1; | |
bd99dc85 PA |
3114 | } |
3115 | response_needed = 1; | |
3116 | ||
3117 | i = 0; | |
3118 | ch = own_buf[i++]; | |
3119 | switch (ch) | |
3120 | { | |
3121 | case 'q': | |
3122 | handle_query (own_buf, packet_len, &new_packet_len); | |
3123 | break; | |
3124 | case 'Q': | |
3125 | handle_general_set (own_buf); | |
3126 | break; | |
3127 | case 'D': | |
3128 | require_running (own_buf); | |
95954743 PA |
3129 | |
3130 | if (multi_process) | |
3131 | { | |
3132 | i++; /* skip ';' */ | |
3133 | pid = strtol (&own_buf[i], NULL, 16); | |
3134 | } | |
3135 | else | |
fbd5db48 | 3136 | pid = ptid_get_pid (current_ptid); |
95954743 | 3137 | |
d3ce09f5 | 3138 | if ((tracing && disconnected_tracing) || any_persistent_commands ()) |
8336d594 PA |
3139 | { |
3140 | struct thread_resume resume_info; | |
3141 | struct process_info *process = find_process_pid (pid); | |
3142 | ||
3143 | if (process == NULL) | |
3144 | { | |
3145 | write_enn (own_buf); | |
3146 | break; | |
3147 | } | |
3148 | ||
d3ce09f5 SS |
3149 | if (tracing && disconnected_tracing) |
3150 | fprintf (stderr, | |
3151 | "Disconnected tracing in effect, " | |
3152 | "leaving gdbserver attached to the process\n"); | |
3153 | ||
3154 | if (any_persistent_commands ()) | |
3155 | fprintf (stderr, | |
3156 | "Persistent commands are present, " | |
3157 | "leaving gdbserver attached to the process\n"); | |
8336d594 PA |
3158 | |
3159 | /* Make sure we're in non-stop/async mode, so we we can both | |
3160 | wait for an async socket accept, and handle async target | |
3161 | events simultaneously. There's also no point either in | |
3162 | having the target stop all threads, when we're going to | |
3163 | pass signals down without informing GDB. */ | |
3164 | if (!non_stop) | |
3165 | { | |
3166 | if (debug_threads) | |
3167 | fprintf (stderr, "Forcing non-stop mode\n"); | |
3168 | ||
3169 | non_stop = 1; | |
3170 | start_non_stop (1); | |
3171 | } | |
3172 | ||
3173 | process->gdb_detached = 1; | |
3174 | ||
3175 | /* Detaching implicitly resumes all threads. */ | |
3176 | resume_info.thread = minus_one_ptid; | |
3177 | resume_info.kind = resume_continue; | |
3178 | resume_info.sig = 0; | |
3179 | (*the_target->resume) (&resume_info, 1); | |
3180 | ||
3181 | write_ok (own_buf); | |
3182 | break; /* from switch/case */ | |
3183 | } | |
3184 | ||
95954743 | 3185 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 3186 | stop_tracing (); |
95954743 | 3187 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
3188 | write_enn (own_buf); |
3189 | else | |
3190 | { | |
95954743 | 3191 | discard_queued_stop_replies (pid); |
bd99dc85 PA |
3192 | write_ok (own_buf); |
3193 | ||
3194 | if (extended_protocol) | |
c906108c | 3195 | { |
bd99dc85 PA |
3196 | /* Treat this like a normal program exit. */ |
3197 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3198 | last_status.value.integer = 0; | |
95954743 | 3199 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 3200 | |
bd99dc85 PA |
3201 | current_inferior = NULL; |
3202 | } | |
3203 | else | |
3204 | { | |
3205 | putpkt (own_buf); | |
3206 | remote_close (); | |
3207 | ||
3208 | /* If we are attached, then we can exit. Otherwise, we | |
3209 | need to hang around doing nothing, until the child is | |
3210 | gone. */ | |
71f55dd8 | 3211 | join_inferior (pid); |
bd99dc85 PA |
3212 | exit (0); |
3213 | } | |
3214 | } | |
3215 | break; | |
3216 | case '!': | |
3217 | extended_protocol = 1; | |
3218 | write_ok (own_buf); | |
3219 | break; | |
3220 | case '?': | |
3221 | handle_status (own_buf); | |
3222 | break; | |
3223 | case 'H': | |
3224 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
3225 | { | |
95954743 PA |
3226 | ptid_t gdb_id, thread_id; |
3227 | int pid; | |
bd99dc85 PA |
3228 | |
3229 | require_running (own_buf); | |
95954743 PA |
3230 | |
3231 | gdb_id = read_ptid (&own_buf[2], NULL); | |
3232 | ||
3233 | pid = ptid_get_pid (gdb_id); | |
3234 | ||
3235 | if (ptid_equal (gdb_id, null_ptid) | |
3236 | || ptid_equal (gdb_id, minus_one_ptid)) | |
3237 | thread_id = null_ptid; | |
3238 | else if (pid != 0 | |
3239 | && ptid_equal (pid_to_ptid (pid), | |
3240 | gdb_id)) | |
3241 | { | |
3242 | struct thread_info *thread = | |
3243 | (struct thread_info *) find_inferior (&all_threads, | |
3244 | first_thread_of, | |
3245 | &pid); | |
3246 | if (!thread) | |
3247 | { | |
3248 | write_enn (own_buf); | |
3249 | break; | |
3250 | } | |
3251 | ||
3252 | thread_id = ((struct inferior_list_entry *)thread)->id; | |
3253 | } | |
bd99dc85 PA |
3254 | else |
3255 | { | |
3256 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 3257 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3258 | { |
a06660f7 | 3259 | write_enn (own_buf); |
c906108c SS |
3260 | break; |
3261 | } | |
c906108c SS |
3262 | } |
3263 | ||
bd99dc85 | 3264 | if (own_buf[1] == 'g') |
c906108c | 3265 | { |
95954743 | 3266 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3267 | { |
bd99dc85 PA |
3268 | /* GDB is telling us to choose any thread. Check if |
3269 | the currently selected thread is still valid. If | |
3270 | it is not, select the first available. */ | |
3271 | struct thread_info *thread = | |
3272 | (struct thread_info *) find_inferior_id (&all_threads, | |
3273 | general_thread); | |
3274 | if (thread == NULL) | |
3275 | thread_id = all_threads.head->id; | |
c906108c | 3276 | } |
bd99dc85 PA |
3277 | |
3278 | general_thread = thread_id; | |
3279 | set_desired_inferior (1); | |
c906108c | 3280 | } |
bd99dc85 PA |
3281 | else if (own_buf[1] == 'c') |
3282 | cont_thread = thread_id; | |
c906108c | 3283 | |
bd99dc85 PA |
3284 | write_ok (own_buf); |
3285 | } | |
3286 | else | |
3287 | { | |
3288 | /* Silently ignore it so that gdb can extend the protocol | |
3289 | without compatibility headaches. */ | |
3290 | own_buf[0] = '\0'; | |
2d717e4f | 3291 | } |
bd99dc85 PA |
3292 | break; |
3293 | case 'g': | |
219f2f23 PA |
3294 | require_running (own_buf); |
3295 | if (current_traceframe >= 0) | |
3296 | { | |
3297 | struct regcache *regcache = new_register_cache (); | |
3298 | ||
3299 | if (fetch_traceframe_registers (current_traceframe, | |
3300 | regcache, -1) == 0) | |
3301 | registers_to_string (regcache, own_buf); | |
3302 | else | |
3303 | write_enn (own_buf); | |
3304 | free_register_cache (regcache); | |
3305 | } | |
3306 | else | |
3307 | { | |
3308 | struct regcache *regcache; | |
3309 | ||
3310 | set_desired_inferior (1); | |
3311 | regcache = get_thread_regcache (current_inferior, 1); | |
3312 | registers_to_string (regcache, own_buf); | |
3313 | } | |
bd99dc85 PA |
3314 | break; |
3315 | case 'G': | |
219f2f23 PA |
3316 | require_running (own_buf); |
3317 | if (current_traceframe >= 0) | |
3318 | write_enn (own_buf); | |
3319 | else | |
3320 | { | |
442ea881 PA |
3321 | struct regcache *regcache; |
3322 | ||
442ea881 PA |
3323 | set_desired_inferior (1); |
3324 | regcache = get_thread_regcache (current_inferior, 1); | |
3325 | registers_from_string (regcache, &own_buf[1]); | |
3326 | write_ok (own_buf); | |
3327 | } | |
bd99dc85 PA |
3328 | break; |
3329 | case 'm': | |
3330 | require_running (own_buf); | |
3331 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
764880b7 PA |
3332 | res = gdb_read_memory (mem_addr, mem_buf, len); |
3333 | if (res < 0) | |
bd99dc85 | 3334 | write_enn (own_buf); |
764880b7 PA |
3335 | else |
3336 | convert_int_to_ascii (mem_buf, own_buf, res); | |
bd99dc85 PA |
3337 | break; |
3338 | case 'M': | |
3339 | require_running (own_buf); | |
fa593d66 | 3340 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 3341 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
3342 | write_ok (own_buf); |
3343 | else | |
3344 | write_enn (own_buf); | |
3345 | break; | |
3346 | case 'X': | |
3347 | require_running (own_buf); | |
3348 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 3349 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 3350 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
3351 | write_enn (own_buf); |
3352 | else | |
3353 | write_ok (own_buf); | |
3354 | break; | |
3355 | case 'C': | |
3356 | require_running (own_buf); | |
3357 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
2ea28649 PA |
3358 | if (gdb_signal_to_host_p (sig)) |
3359 | signal = gdb_signal_to_host (sig); | |
bd99dc85 PA |
3360 | else |
3361 | signal = 0; | |
3362 | myresume (own_buf, 0, signal); | |
3363 | break; | |
3364 | case 'S': | |
3365 | require_running (own_buf); | |
3366 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
2ea28649 PA |
3367 | if (gdb_signal_to_host_p (sig)) |
3368 | signal = gdb_signal_to_host (sig); | |
bd99dc85 PA |
3369 | else |
3370 | signal = 0; | |
3371 | myresume (own_buf, 1, signal); | |
3372 | break; | |
3373 | case 'c': | |
3374 | require_running (own_buf); | |
3375 | signal = 0; | |
3376 | myresume (own_buf, 0, signal); | |
3377 | break; | |
3378 | case 's': | |
3379 | require_running (own_buf); | |
3380 | signal = 0; | |
3381 | myresume (own_buf, 1, signal); | |
3382 | break; | |
c6314022 AR |
3383 | case 'Z': /* insert_ ... */ |
3384 | /* Fallthrough. */ | |
3385 | case 'z': /* remove_ ... */ | |
bd99dc85 | 3386 | { |
bd99dc85 | 3387 | char *dataptr; |
aca22551 PA |
3388 | ULONGEST addr; |
3389 | int len; | |
bd99dc85 | 3390 | char type = own_buf[1]; |
c6314022 | 3391 | int res; |
d993e290 | 3392 | const int insert = ch == 'Z'; |
aca22551 PA |
3393 | char *p = &own_buf[3]; |
3394 | ||
3395 | p = unpack_varlen_hex (p, &addr); | |
3396 | len = strtol (p + 1, &dataptr, 16); | |
c6314022 | 3397 | |
d993e290 PA |
3398 | /* Default to unrecognized/unsupported. */ |
3399 | res = 1; | |
3400 | switch (type) | |
3401 | { | |
3402 | case '0': /* software-breakpoint */ | |
3403 | case '1': /* hardware-breakpoint */ | |
3404 | case '2': /* write watchpoint */ | |
3405 | case '3': /* read watchpoint */ | |
3406 | case '4': /* access watchpoint */ | |
3407 | require_running (own_buf); | |
3408 | if (insert && the_target->insert_point != NULL) | |
9f3a5c85 LM |
3409 | { |
3410 | /* Insert the breakpoint. If it is already inserted, nothing | |
3411 | will take place. */ | |
3412 | res = (*the_target->insert_point) (type, addr, len); | |
3413 | ||
3414 | /* GDB may have sent us a list of *point parameters to be | |
3415 | evaluated on the target's side. Read such list here. If we | |
3416 | already have a list of parameters, GDB is telling us to drop | |
3417 | that list and use this one instead. */ | |
3418 | if (!res && (type == '0' || type == '1')) | |
3419 | { | |
3420 | /* Remove previous conditions. */ | |
3421 | clear_gdb_breakpoint_conditions (addr); | |
3422 | process_point_options (addr, &dataptr); | |
3423 | } | |
3424 | } | |
d993e290 PA |
3425 | else if (!insert && the_target->remove_point != NULL) |
3426 | res = (*the_target->remove_point) (type, addr, len); | |
3427 | break; | |
3428 | default: | |
3429 | break; | |
3430 | } | |
bd99dc85 | 3431 | |
c6314022 AR |
3432 | if (res == 0) |
3433 | write_ok (own_buf); | |
3434 | else if (res == 1) | |
3435 | /* Unsupported. */ | |
3436 | own_buf[0] = '\0'; | |
bd99dc85 | 3437 | else |
c6314022 | 3438 | write_enn (own_buf); |
bd99dc85 PA |
3439 | break; |
3440 | } | |
3441 | case 'k': | |
3442 | response_needed = 0; | |
3443 | if (!target_running ()) | |
95954743 PA |
3444 | /* The packet we received doesn't make sense - but we can't |
3445 | reply to it, either. */ | |
8336d594 | 3446 | return 0; |
c906108c | 3447 | |
95954743 PA |
3448 | fprintf (stderr, "Killing all inferiors\n"); |
3449 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 3450 | |
bd99dc85 PA |
3451 | /* When using the extended protocol, we wait with no program |
3452 | running. The traditional protocol will exit instead. */ | |
3453 | if (extended_protocol) | |
3454 | { | |
3455 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 3456 | last_status.value.sig = GDB_SIGNAL_KILL; |
8336d594 | 3457 | return 0; |
bd99dc85 PA |
3458 | } |
3459 | else | |
8336d594 PA |
3460 | exit (0); |
3461 | ||
bd99dc85 PA |
3462 | case 'T': |
3463 | { | |
95954743 | 3464 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
3465 | |
3466 | require_running (own_buf); | |
95954743 PA |
3467 | |
3468 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 3469 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 3470 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
3471 | { |
3472 | write_enn (own_buf); | |
3473 | break; | |
3474 | } | |
3475 | ||
3476 | if (mythread_alive (thread_id)) | |
3477 | write_ok (own_buf); | |
3478 | else | |
3479 | write_enn (own_buf); | |
3480 | } | |
3481 | break; | |
3482 | case 'R': | |
3483 | response_needed = 0; | |
3484 | ||
3485 | /* Restarting the inferior is only supported in the extended | |
3486 | protocol. */ | |
3487 | if (extended_protocol) | |
3488 | { | |
3489 | if (target_running ()) | |
95954743 PA |
3490 | for_each_inferior (&all_processes, |
3491 | kill_inferior_callback); | |
bd99dc85 PA |
3492 | fprintf (stderr, "GDBserver restarting\n"); |
3493 | ||
3494 | /* Wait till we are at 1st instruction in prog. */ | |
3495 | if (program_argv != NULL) | |
3496 | start_inferior (program_argv); | |
3497 | else | |
3498 | { | |
3499 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 3500 | last_status.value.sig = GDB_SIGNAL_KILL; |
bd99dc85 | 3501 | } |
8336d594 | 3502 | return 0; |
c906108c SS |
3503 | } |
3504 | else | |
3505 | { | |
bd99dc85 PA |
3506 | /* It is a request we don't understand. Respond with an |
3507 | empty packet so that gdb knows that we don't support this | |
3508 | request. */ | |
3509 | own_buf[0] = '\0'; | |
3510 | break; | |
3511 | } | |
3512 | case 'v': | |
3513 | /* Extended (long) request. */ | |
3514 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
3515 | break; | |
3516 | ||
3517 | default: | |
3518 | /* It is a request we don't understand. Respond with an empty | |
3519 | packet so that gdb knows that we don't support this | |
3520 | request. */ | |
3521 | own_buf[0] = '\0'; | |
3522 | break; | |
3523 | } | |
3524 | ||
3525 | if (new_packet_len != -1) | |
3526 | putpkt_binary (own_buf, new_packet_len); | |
3527 | else | |
3528 | putpkt (own_buf); | |
3529 | ||
3530 | response_needed = 0; | |
3531 | ||
3532 | if (!extended_protocol && have_ran && !target_running ()) | |
3533 | { | |
3534 | /* In non-stop, defer exiting until GDB had a chance to query | |
3535 | the whole vStopped list (until it gets an OK). */ | |
14a00470 | 3536 | if (QUEUE_is_empty (notif_event_p, notif_stop.queue)) |
bd99dc85 PA |
3537 | { |
3538 | fprintf (stderr, "GDBserver exiting\n"); | |
c906108c | 3539 | remote_close (); |
bd99dc85 | 3540 | exit (0); |
c906108c SS |
3541 | } |
3542 | } | |
8336d594 PA |
3543 | |
3544 | if (exit_requested) | |
3545 | return -1; | |
3546 | ||
3547 | return 0; | |
c906108c | 3548 | } |
bd99dc85 PA |
3549 | |
3550 | /* Event-loop callback for serial events. */ | |
3551 | ||
8336d594 | 3552 | int |
bd99dc85 PA |
3553 | handle_serial_event (int err, gdb_client_data client_data) |
3554 | { | |
3555 | if (debug_threads) | |
3556 | fprintf (stderr, "handling possible serial event\n"); | |
3557 | ||
3558 | /* Really handle it. */ | |
8336d594 PA |
3559 | if (process_serial_event () < 0) |
3560 | return -1; | |
bd99dc85 PA |
3561 | |
3562 | /* Be sure to not change the selected inferior behind GDB's back. | |
3563 | Important in the non-stop mode asynchronous protocol. */ | |
3564 | set_desired_inferior (1); | |
8336d594 PA |
3565 | |
3566 | return 0; | |
bd99dc85 PA |
3567 | } |
3568 | ||
3569 | /* Event-loop callback for target events. */ | |
3570 | ||
8336d594 | 3571 | int |
bd99dc85 PA |
3572 | handle_target_event (int err, gdb_client_data client_data) |
3573 | { | |
3574 | if (debug_threads) | |
3575 | fprintf (stderr, "handling possible target event\n"); | |
3576 | ||
95954743 PA |
3577 | last_ptid = mywait (minus_one_ptid, &last_status, |
3578 | TARGET_WNOHANG, 1); | |
bd99dc85 PA |
3579 | |
3580 | if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
3581 | { | |
8336d594 PA |
3582 | int pid = ptid_get_pid (last_ptid); |
3583 | struct process_info *process = find_process_pid (pid); | |
3584 | int forward_event = !gdb_connected () || process->gdb_detached; | |
3585 | ||
3586 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
3587 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
3588 | { |
3589 | mark_breakpoints_out (process); | |
3590 | mourn_inferior (process); | |
3591 | } | |
ce1a5b52 | 3592 | else |
d20a8ad9 PA |
3593 | { |
3594 | /* We're reporting this thread as stopped. Update its | |
3595 | "want-stopped" state to what the client wants, until it | |
3596 | gets a new resume action. */ | |
3597 | current_inferior->last_resume_kind = resume_stop; | |
3598 | current_inferior->last_status = last_status; | |
3599 | } | |
8336d594 PA |
3600 | |
3601 | if (forward_event) | |
3602 | { | |
3603 | if (!target_running ()) | |
3604 | { | |
3605 | /* The last process exited. We're done. */ | |
3606 | exit (0); | |
3607 | } | |
3608 | ||
3609 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
3610 | { | |
3611 | /* A thread stopped with a signal, but gdb isn't | |
3612 | connected to handle it. Pass it down to the | |
3613 | inferior, as if it wasn't being traced. */ | |
3614 | struct thread_resume resume_info; | |
3615 | ||
3616 | if (debug_threads) | |
3617 | fprintf (stderr, | |
3618 | "GDB not connected; forwarding event %d for [%s]\n", | |
3619 | (int) last_status.kind, | |
3620 | target_pid_to_str (last_ptid)); | |
3621 | ||
3622 | resume_info.thread = last_ptid; | |
3623 | resume_info.kind = resume_continue; | |
2ea28649 | 3624 | resume_info.sig = gdb_signal_to_host (last_status.value.sig); |
8336d594 PA |
3625 | (*the_target->resume) (&resume_info, 1); |
3626 | } | |
3627 | else if (debug_threads) | |
3628 | fprintf (stderr, "GDB not connected; ignoring event %d for [%s]\n", | |
3629 | (int) last_status.kind, | |
3630 | target_pid_to_str (last_ptid)); | |
3631 | } | |
3632 | else | |
3633 | { | |
14a00470 YQ |
3634 | struct vstop_notif *vstop_notif |
3635 | = xmalloc (sizeof (struct vstop_notif)); | |
3636 | ||
3637 | vstop_notif->status = last_status; | |
3638 | vstop_notif->ptid = last_ptid; | |
3639 | /* Push Stop notification. */ | |
3640 | notif_push (¬if_stop, | |
3641 | (struct notif_event *) vstop_notif); | |
8336d594 | 3642 | } |
bd99dc85 PA |
3643 | } |
3644 | ||
3645 | /* Be sure to not change the selected inferior behind GDB's back. | |
3646 | Important in the non-stop mode asynchronous protocol. */ | |
3647 | set_desired_inferior (1); | |
8336d594 PA |
3648 | |
3649 | return 0; | |
bd99dc85 | 3650 | } |