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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" |
3aee8918 | 23 | #include "tdesc.h" |
c906108c | 24 | |
a9fa9f7d | 25 | #include <unistd.h> |
68070c10 | 26 | #if HAVE_SIGNAL_H |
a9fa9f7d | 27 | #include <signal.h> |
68070c10 | 28 | #endif |
8bdce1ff | 29 | #include "gdb_wait.h" |
9accd112 | 30 | #include "btrace-common.h" |
a9fa9f7d | 31 | |
122f36ef PA |
32 | /* The thread set with an `Hc' packet. `Hc' is deprecated in favor of |
33 | `vCont'. Note the multi-process extensions made `vCont' a | |
34 | requirement, so `Hc pPID.TID' is pretty much undefined. So | |
35 | CONT_THREAD can be null_ptid for no `Hc' thread, minus_one_ptid for | |
36 | resuming all threads of the process (again, `Hc' isn't used for | |
37 | multi-process), or a specific thread ptid_t. | |
38 | ||
39 | We also set this when handling a single-thread `vCont' resume, as | |
40 | some places in the backends check it to know when (and for which | |
41 | thread) single-thread scheduler-locking is in effect. */ | |
95954743 | 42 | ptid_t cont_thread; |
122f36ef PA |
43 | |
44 | /* The thread set with an `Hg' packet. */ | |
95954743 | 45 | ptid_t general_thread; |
5b1c542e | 46 | |
0d62e5e8 DJ |
47 | int server_waiting; |
48 | ||
2d717e4f | 49 | static int extended_protocol; |
2d717e4f DJ |
50 | static int response_needed; |
51 | static int exit_requested; | |
52 | ||
03f2bd59 JK |
53 | /* --once: Exit after the first connection has closed. */ |
54 | int run_once; | |
55 | ||
95954743 | 56 | int multi_process; |
bd99dc85 PA |
57 | int non_stop; |
58 | ||
03583c20 UW |
59 | /* Whether we should attempt to disable the operating system's address |
60 | space randomization feature before starting an inferior. */ | |
61 | int disable_randomization = 1; | |
62 | ||
ccd213ac | 63 | static char **program_argv, **wrapper_argv; |
2d717e4f | 64 | |
c74d0ad8 DJ |
65 | /* Enable miscellaneous debugging output. The name is historical - it |
66 | was originally used to debug LinuxThreads support. */ | |
67 | int debug_threads; | |
68 | ||
aa5ca48f DE |
69 | /* Enable debugging of h/w breakpoint/watchpoint support. */ |
70 | int debug_hw_points; | |
71 | ||
a493e3e2 PA |
72 | int pass_signals[GDB_SIGNAL_LAST]; |
73 | int program_signals[GDB_SIGNAL_LAST]; | |
9b224c5e | 74 | int program_signals_p; |
89be2091 | 75 | |
c906108c | 76 | jmp_buf toplevel; |
c906108c | 77 | |
a9fa9f7d DJ |
78 | /* The PID of the originally created or attached inferior. Used to |
79 | send signals to the process when GDB sends us an asynchronous interrupt | |
80 | (user hitting Control-C in the client), and to wait for the child to exit | |
81 | when no longer debugging it. */ | |
82 | ||
a1928bad | 83 | unsigned long signal_pid; |
a9fa9f7d | 84 | |
290fadea RS |
85 | #ifdef SIGTTOU |
86 | /* A file descriptor for the controlling terminal. */ | |
87 | int terminal_fd; | |
88 | ||
89 | /* TERMINAL_FD's original foreground group. */ | |
90 | pid_t old_foreground_pgrp; | |
91 | ||
92 | /* Hand back terminal ownership to the original foreground group. */ | |
93 | ||
94 | static void | |
95 | restore_old_foreground_pgrp (void) | |
96 | { | |
97 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
98 | } | |
99 | #endif | |
100 | ||
ec56be1b PA |
101 | /* Set if you want to disable optional thread related packets support |
102 | in gdbserver, for the sake of testing GDB against stubs that don't | |
103 | support them. */ | |
104 | int disable_packet_vCont; | |
105 | int disable_packet_Tthread; | |
106 | int disable_packet_qC; | |
107 | int disable_packet_qfThreadInfo; | |
108 | ||
5b1c542e PA |
109 | /* Last status reported to GDB. */ |
110 | static struct target_waitstatus last_status; | |
95954743 | 111 | static ptid_t last_ptid; |
5b1c542e | 112 | |
bd99dc85 PA |
113 | static char *own_buf; |
114 | static unsigned char *mem_buf; | |
115 | ||
14a00470 YQ |
116 | /* A sub-class of 'struct notif_event' for stop, holding information |
117 | relative to a single stop reply. We keep a queue of these to | |
118 | push to GDB in non-stop mode. */ | |
119 | ||
bd99dc85 PA |
120 | struct vstop_notif |
121 | { | |
14a00470 | 122 | struct notif_event base; |
bd99dc85 PA |
123 | |
124 | /* Thread or process that got the event. */ | |
95954743 | 125 | ptid_t ptid; |
bd99dc85 PA |
126 | |
127 | /* Event info. */ | |
128 | struct target_waitstatus status; | |
129 | }; | |
130 | ||
14a00470 | 131 | DEFINE_QUEUE_P (notif_event_p); |
bd99dc85 PA |
132 | |
133 | /* Put a stop reply to the stop reply queue. */ | |
134 | ||
135 | static void | |
95954743 | 136 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 137 | { |
14a00470 | 138 | struct vstop_notif *new_notif = xmalloc (sizeof (*new_notif)); |
bd99dc85 | 139 | |
bd99dc85 PA |
140 | new_notif->ptid = ptid; |
141 | new_notif->status = *status; | |
142 | ||
14a00470 | 143 | notif_event_enque (¬if_stop, (struct notif_event *) new_notif); |
bd99dc85 PA |
144 | } |
145 | ||
14a00470 YQ |
146 | static int |
147 | remove_all_on_match_pid (QUEUE (notif_event_p) *q, | |
148 | QUEUE_ITER (notif_event_p) *iter, | |
149 | struct notif_event *event, | |
150 | void *data) | |
bd99dc85 | 151 | { |
14a00470 | 152 | int *pid = data; |
d20a8ad9 | 153 | |
14a00470 YQ |
154 | if (*pid == -1 |
155 | || ptid_get_pid (((struct vstop_notif *) event)->ptid) == *pid) | |
bd99dc85 | 156 | { |
14a00470 YQ |
157 | if (q->free_func != NULL) |
158 | q->free_func (event); | |
159 | ||
160 | QUEUE_remove_elem (notif_event_p, q, iter); | |
bd99dc85 | 161 | } |
14a00470 YQ |
162 | |
163 | return 1; | |
bd99dc85 PA |
164 | } |
165 | ||
95954743 PA |
166 | /* Get rid of the currently pending stop replies for PID. If PID is |
167 | -1, then apply to all processes. */ | |
bd99dc85 PA |
168 | |
169 | static void | |
95954743 | 170 | discard_queued_stop_replies (int pid) |
bd99dc85 | 171 | { |
14a00470 YQ |
172 | QUEUE_iterate (notif_event_p, notif_stop.queue, |
173 | remove_all_on_match_pid, &pid); | |
bd99dc85 PA |
174 | } |
175 | ||
bd99dc85 | 176 | static void |
14a00470 | 177 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 178 | { |
14a00470 YQ |
179 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
180 | ||
181 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
182 | } |
183 | ||
14a00470 YQ |
184 | struct notif_server notif_stop = |
185 | { | |
186 | "vStopped", "Stop", NULL, vstop_notif_reply, | |
187 | }; | |
188 | ||
2d717e4f DJ |
189 | static int |
190 | target_running (void) | |
191 | { | |
192 | return all_threads.head != NULL; | |
193 | } | |
194 | ||
fc620387 | 195 | static int |
5b1c542e | 196 | start_inferior (char **argv) |
c906108c | 197 | { |
ccd213ac | 198 | char **new_argv = argv; |
2d717e4f | 199 | |
ccd213ac DJ |
200 | if (wrapper_argv != NULL) |
201 | { | |
202 | int i, count = 1; | |
203 | ||
204 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
205 | count++; | |
206 | for (i = 0; argv[i] != NULL; i++) | |
207 | count++; | |
208 | new_argv = alloca (sizeof (char *) * count); | |
209 | count = 0; | |
210 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
211 | new_argv[count++] = wrapper_argv[i]; | |
212 | for (i = 0; argv[i] != NULL; i++) | |
213 | new_argv[count++] = argv[i]; | |
214 | new_argv[count] = NULL; | |
215 | } | |
216 | ||
65730243 DE |
217 | if (debug_threads) |
218 | { | |
219 | int i; | |
220 | for (i = 0; new_argv[i]; ++i) | |
221 | fprintf (stderr, "new_argv[%d] = \"%s\"\n", i, new_argv[i]); | |
222 | fflush (stderr); | |
223 | } | |
224 | ||
b80864fb | 225 | #ifdef SIGTTOU |
a9fa9f7d DJ |
226 | signal (SIGTTOU, SIG_DFL); |
227 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 228 | #endif |
a9fa9f7d | 229 | |
122f36ef PA |
230 | /* Clear this so the backend doesn't get confused, thinking |
231 | CONT_THREAD died, and it needs to resume all threads. */ | |
232 | cont_thread = null_ptid; | |
233 | ||
ccd213ac | 234 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 235 | |
c588c53c MS |
236 | /* FIXME: we don't actually know at this point that the create |
237 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 238 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 239 | signal_pid); |
b80864fb | 240 | fflush (stderr); |
a9fa9f7d | 241 | |
b80864fb | 242 | #ifdef SIGTTOU |
a9fa9f7d DJ |
243 | signal (SIGTTOU, SIG_IGN); |
244 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
245 | terminal_fd = fileno (stderr); |
246 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
247 | tcsetpgrp (terminal_fd, signal_pid); | |
248 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 249 | #endif |
c906108c | 250 | |
ccd213ac DJ |
251 | if (wrapper_argv != NULL) |
252 | { | |
253 | struct thread_resume resume_info; | |
ccd213ac | 254 | |
95954743 | 255 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 256 | resume_info.kind = resume_continue; |
ccd213ac | 257 | resume_info.sig = 0; |
ccd213ac | 258 | |
06db92f0 | 259 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 260 | |
5b1c542e PA |
261 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
262 | return signal_pid; | |
ccd213ac DJ |
263 | |
264 | do | |
265 | { | |
2bd7c093 | 266 | (*the_target->resume) (&resume_info, 1); |
ccd213ac | 267 | |
06db92f0 | 268 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e PA |
269 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
270 | return signal_pid; | |
d20a8ad9 PA |
271 | |
272 | current_inferior->last_resume_kind = resume_stop; | |
273 | current_inferior->last_status = last_status; | |
ccd213ac | 274 | } |
a493e3e2 | 275 | while (last_status.value.sig != GDB_SIGNAL_TRAP); |
ccd213ac | 276 | |
5b1c542e | 277 | return signal_pid; |
ccd213ac DJ |
278 | } |
279 | ||
5b1c542e PA |
280 | /* Wait till we are at 1st instruction in program, return new pid |
281 | (assuming success). */ | |
95954743 | 282 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 283 | |
d20a8ad9 PA |
284 | if (last_status.kind != TARGET_WAITKIND_EXITED |
285 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
286 | { | |
287 | current_inferior->last_resume_kind = resume_stop; | |
288 | current_inferior->last_status = last_status; | |
289 | } | |
290 | ||
5b1c542e | 291 | return signal_pid; |
c906108c SS |
292 | } |
293 | ||
45b7b345 | 294 | static int |
5b1c542e | 295 | attach_inferior (int pid) |
45b7b345 DJ |
296 | { |
297 | /* myattach should return -1 if attaching is unsupported, | |
298 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 299 | |
45b7b345 DJ |
300 | if (myattach (pid) != 0) |
301 | return -1; | |
302 | ||
6910d122 | 303 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 304 | fflush (stderr); |
6910d122 | 305 | |
a9fa9f7d DJ |
306 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
307 | attach function, so that it can be the main thread instead of | |
308 | whichever we were told to attach to. */ | |
309 | signal_pid = pid; | |
310 | ||
7d5d4e98 PA |
311 | /* Clear this so the backend doesn't get confused, thinking |
312 | CONT_THREAD died, and it needs to resume all threads. */ | |
313 | cont_thread = null_ptid; | |
314 | ||
bd99dc85 PA |
315 | if (!non_stop) |
316 | { | |
95954743 | 317 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
318 | |
319 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
320 | process using the "attach" command, but this is different; it's | |
321 | just using "target remote". Pretend it's just starting up. */ | |
322 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 PA |
323 | && last_status.value.sig == GDB_SIGNAL_STOP) |
324 | last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 PA |
325 | |
326 | current_inferior->last_resume_kind = resume_stop; | |
327 | current_inferior->last_status = last_status; | |
bd99dc85 | 328 | } |
9db87ebd | 329 | |
45b7b345 DJ |
330 | return 0; |
331 | } | |
332 | ||
c906108c | 333 | extern int remote_debug; |
ce3a066d | 334 | |
0876f84a DJ |
335 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
336 | or -1 otherwise. */ | |
337 | ||
338 | static int | |
d08aafef | 339 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 340 | { |
d08aafef PA |
341 | /* After the read marker and annex, qXfer looks like a |
342 | traditional 'm' packet. */ | |
343 | decode_m_packet (buf, ofs, len); | |
344 | ||
345 | return 0; | |
346 | } | |
347 | ||
348 | static int | |
349 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
350 | { | |
351 | /* Extract and NUL-terminate the object. */ | |
352 | *object = buf; | |
353 | while (*buf && *buf != ':') | |
354 | buf++; | |
355 | if (*buf == '\0') | |
356 | return -1; | |
357 | *buf++ = 0; | |
358 | ||
359 | /* Extract and NUL-terminate the read/write action. */ | |
360 | *rw = buf; | |
361 | while (*buf && *buf != ':') | |
362 | buf++; | |
363 | if (*buf == '\0') | |
364 | return -1; | |
365 | *buf++ = 0; | |
366 | ||
0876f84a DJ |
367 | /* Extract and NUL-terminate the annex. */ |
368 | *annex = buf; | |
369 | while (*buf && *buf != ':') | |
370 | buf++; | |
371 | if (*buf == '\0') | |
372 | return -1; | |
373 | *buf++ = 0; | |
374 | ||
d08aafef | 375 | *offset = buf; |
0876f84a DJ |
376 | return 0; |
377 | } | |
378 | ||
379 | /* Write the response to a successful qXfer read. Returns the | |
380 | length of the (binary) data stored in BUF, corresponding | |
381 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
382 | the first character of the response. */ | |
383 | static int | |
23181151 | 384 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
0876f84a DJ |
385 | { |
386 | int out_len; | |
387 | ||
388 | if (is_more) | |
389 | buf[0] = 'm'; | |
390 | else | |
391 | buf[0] = 'l'; | |
392 | ||
393 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, | |
394 | PBUFSIZ - 2) + 1; | |
395 | } | |
396 | ||
9accd112 MM |
397 | /* Handle btrace enabling. */ |
398 | ||
399 | static const char * | |
400 | handle_btrace_enable (struct thread_info *thread) | |
401 | { | |
402 | if (thread->btrace != NULL) | |
403 | return "E.Btrace already enabled."; | |
404 | ||
405 | thread->btrace = target_enable_btrace (thread->entry.id); | |
406 | if (thread->btrace == NULL) | |
407 | return "E.Could not enable btrace."; | |
408 | ||
409 | return NULL; | |
410 | } | |
411 | ||
412 | /* Handle btrace disabling. */ | |
413 | ||
414 | static const char * | |
415 | handle_btrace_disable (struct thread_info *thread) | |
416 | { | |
417 | ||
418 | if (thread->btrace == NULL) | |
419 | return "E.Branch tracing not enabled."; | |
420 | ||
421 | if (target_disable_btrace (thread->btrace) != 0) | |
422 | return "E.Could not disable branch tracing."; | |
423 | ||
424 | thread->btrace = NULL; | |
425 | return NULL; | |
426 | } | |
427 | ||
428 | /* Handle the "Qbtrace" packet. */ | |
429 | ||
430 | static int | |
431 | handle_btrace_general_set (char *own_buf) | |
432 | { | |
433 | struct thread_info *thread; | |
434 | const char *err; | |
435 | char *op; | |
436 | ||
437 | if (strncmp ("Qbtrace:", own_buf, strlen ("Qbtrace:")) != 0) | |
438 | return 0; | |
439 | ||
440 | op = own_buf + strlen ("Qbtrace:"); | |
441 | ||
442 | if (!target_supports_btrace ()) | |
443 | { | |
444 | strcpy (own_buf, "E.Target does not support branch tracing."); | |
445 | return -1; | |
446 | } | |
447 | ||
448 | if (ptid_equal (general_thread, null_ptid) | |
449 | || ptid_equal (general_thread, minus_one_ptid)) | |
450 | { | |
451 | strcpy (own_buf, "E.Must select a single thread."); | |
452 | return -1; | |
453 | } | |
454 | ||
455 | thread = find_thread_ptid (general_thread); | |
456 | if (thread == NULL) | |
457 | { | |
458 | strcpy (own_buf, "E.No such thread."); | |
459 | return -1; | |
460 | } | |
461 | ||
462 | err = NULL; | |
463 | ||
464 | if (strcmp (op, "bts") == 0) | |
465 | err = handle_btrace_enable (thread); | |
466 | else if (strcmp (op, "off") == 0) | |
467 | err = handle_btrace_disable (thread); | |
468 | else | |
469 | err = "E.Bad Qbtrace operation. Use bts or off."; | |
470 | ||
471 | if (err != 0) | |
472 | strcpy (own_buf, err); | |
473 | else | |
474 | write_ok (own_buf); | |
475 | ||
476 | return 1; | |
477 | } | |
478 | ||
89be2091 | 479 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
480 | |
481 | static void | |
89be2091 DJ |
482 | handle_general_set (char *own_buf) |
483 | { | |
484 | if (strncmp ("QPassSignals:", own_buf, strlen ("QPassSignals:")) == 0) | |
485 | { | |
a493e3e2 | 486 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
487 | const char *p = own_buf + strlen ("QPassSignals:"); |
488 | CORE_ADDR cursig; | |
489 | ||
490 | p = decode_address_to_semicolon (&cursig, p); | |
491 | for (i = 0; i < numsigs; i++) | |
492 | { | |
493 | if (i == cursig) | |
494 | { | |
495 | pass_signals[i] = 1; | |
496 | if (*p == '\0') | |
497 | /* Keep looping, to clear the remaining signals. */ | |
498 | cursig = -1; | |
499 | else | |
500 | p = decode_address_to_semicolon (&cursig, p); | |
501 | } | |
502 | else | |
503 | pass_signals[i] = 0; | |
504 | } | |
505 | strcpy (own_buf, "OK"); | |
506 | return; | |
507 | } | |
508 | ||
9b224c5e PA |
509 | if (strncmp ("QProgramSignals:", own_buf, strlen ("QProgramSignals:")) == 0) |
510 | { | |
a493e3e2 | 511 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
512 | const char *p = own_buf + strlen ("QProgramSignals:"); |
513 | CORE_ADDR cursig; | |
514 | ||
515 | program_signals_p = 1; | |
516 | ||
517 | p = decode_address_to_semicolon (&cursig, p); | |
518 | for (i = 0; i < numsigs; i++) | |
519 | { | |
520 | if (i == cursig) | |
521 | { | |
522 | program_signals[i] = 1; | |
523 | if (*p == '\0') | |
524 | /* Keep looping, to clear the remaining signals. */ | |
525 | cursig = -1; | |
526 | else | |
527 | p = decode_address_to_semicolon (&cursig, p); | |
528 | } | |
529 | else | |
530 | program_signals[i] = 0; | |
531 | } | |
532 | strcpy (own_buf, "OK"); | |
533 | return; | |
534 | } | |
535 | ||
a6f3e723 SL |
536 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
537 | { | |
538 | if (remote_debug) | |
539 | { | |
540 | fprintf (stderr, "[noack mode enabled]\n"); | |
541 | fflush (stderr); | |
542 | } | |
543 | ||
544 | noack_mode = 1; | |
545 | write_ok (own_buf); | |
546 | return; | |
547 | } | |
548 | ||
bd99dc85 PA |
549 | if (strncmp (own_buf, "QNonStop:", 9) == 0) |
550 | { | |
551 | char *mode = own_buf + 9; | |
552 | int req = -1; | |
553 | char *req_str; | |
554 | ||
555 | if (strcmp (mode, "0") == 0) | |
556 | req = 0; | |
557 | else if (strcmp (mode, "1") == 0) | |
558 | req = 1; | |
559 | else | |
560 | { | |
561 | /* We don't know what this mode is, so complain to | |
562 | GDB. */ | |
563 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
564 | own_buf); | |
565 | write_enn (own_buf); | |
566 | return; | |
567 | } | |
568 | ||
569 | req_str = req ? "non-stop" : "all-stop"; | |
570 | if (start_non_stop (req) != 0) | |
571 | { | |
572 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
573 | write_enn (own_buf); | |
574 | return; | |
575 | } | |
576 | ||
577 | non_stop = req; | |
578 | ||
579 | if (remote_debug) | |
580 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
581 | ||
582 | write_ok (own_buf); | |
583 | return; | |
584 | } | |
585 | ||
03583c20 UW |
586 | if (strncmp ("QDisableRandomization:", own_buf, |
587 | strlen ("QDisableRandomization:")) == 0) | |
588 | { | |
589 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
590 | ULONGEST setting; | |
591 | ||
592 | unpack_varlen_hex (packet, &setting); | |
593 | disable_randomization = setting; | |
594 | ||
595 | if (remote_debug) | |
596 | { | |
597 | if (disable_randomization) | |
598 | fprintf (stderr, "[address space randomization disabled]\n"); | |
599 | else | |
600 | fprintf (stderr, "[address space randomization enabled]\n"); | |
601 | } | |
602 | ||
603 | write_ok (own_buf); | |
604 | return; | |
605 | } | |
606 | ||
219f2f23 PA |
607 | if (target_supports_tracepoints () |
608 | && handle_tracepoint_general_set (own_buf)) | |
609 | return; | |
610 | ||
d1feda86 YQ |
611 | if (strncmp ("QAgent:", own_buf, strlen ("QAgent:")) == 0) |
612 | { | |
613 | char *mode = own_buf + strlen ("QAgent:"); | |
614 | int req = 0; | |
615 | ||
616 | if (strcmp (mode, "0") == 0) | |
617 | req = 0; | |
618 | else if (strcmp (mode, "1") == 0) | |
619 | req = 1; | |
620 | else | |
621 | { | |
622 | /* We don't know what this value is, so complain to GDB. */ | |
623 | sprintf (own_buf, "E.Unknown QAgent value"); | |
624 | return; | |
625 | } | |
626 | ||
627 | /* Update the flag. */ | |
628 | use_agent = req; | |
629 | if (remote_debug) | |
630 | fprintf (stderr, "[%s agent]\n", req ? "Enable" : "Disable"); | |
631 | write_ok (own_buf); | |
632 | return; | |
633 | } | |
634 | ||
9accd112 MM |
635 | if (handle_btrace_general_set (own_buf)) |
636 | return; | |
637 | ||
89be2091 DJ |
638 | /* Otherwise we didn't know what packet it was. Say we didn't |
639 | understand it. */ | |
640 | own_buf[0] = 0; | |
641 | } | |
642 | ||
23181151 | 643 | static const char * |
fb1e4ffc | 644 | get_features_xml (const char *annex) |
23181151 | 645 | { |
3aee8918 PA |
646 | const struct target_desc *desc = current_target_desc (); |
647 | ||
648 | /* `desc->xmltarget' defines what to return when looking for the | |
649 | "target.xml" file. Its contents can either be verbatim XML code | |
650 | (prefixed with a '@') or else the name of the actual XML file to | |
651 | be used in place of "target.xml". | |
fb1e4ffc | 652 | |
9b4b61c8 UW |
653 | This variable is set up from the auto-generated |
654 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 655 | |
3aee8918 | 656 | if (desc->xmltarget != NULL && strcmp (annex, "target.xml") == 0) |
23181151 | 657 | { |
3aee8918 PA |
658 | if (*desc->xmltarget == '@') |
659 | return desc->xmltarget + 1; | |
23181151 | 660 | else |
3aee8918 | 661 | annex = desc->xmltarget; |
23181151 DJ |
662 | } |
663 | ||
9b4b61c8 UW |
664 | #ifdef USE_XML |
665 | { | |
666 | extern const char *const xml_builtin[][2]; | |
667 | int i; | |
668 | ||
669 | /* Look for the annex. */ | |
670 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
671 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
672 | break; | |
673 | ||
674 | if (xml_builtin[i][0] != NULL) | |
675 | return xml_builtin[i][1]; | |
676 | } | |
677 | #endif | |
678 | ||
679 | return NULL; | |
23181151 DJ |
680 | } |
681 | ||
c74d0ad8 DJ |
682 | void |
683 | monitor_show_help (void) | |
684 | { | |
685 | monitor_output ("The following monitor commands are supported:\n"); | |
686 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 687 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
688 | monitor_output (" set debug-hw-points <0|1>\n"); |
689 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
690 | monitor_output (" set remote-debug <0|1>\n"); |
691 | monitor_output (" Enable remote protocol debugging messages\n"); | |
ecd7ecbc DJ |
692 | monitor_output (" exit\n"); |
693 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
694 | } |
695 | ||
764880b7 PA |
696 | /* Read trace frame or inferior memory. Returns the number of bytes |
697 | actually read, zero when no further transfer is possible, and -1 on | |
698 | error. Return of a positive value smaller than LEN does not | |
699 | indicate there's no more to be read, only the end of the transfer. | |
700 | E.g., when GDB reads memory from a traceframe, a first request may | |
701 | be served from a memory block that does not cover the whole request | |
702 | length. A following request gets the rest served from either | |
703 | another block (of the same traceframe) or from the read-only | |
704 | regions. */ | |
219f2f23 PA |
705 | |
706 | static int | |
90d74c30 | 707 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 708 | { |
764880b7 | 709 | int res; |
90d74c30 | 710 | |
219f2f23 PA |
711 | if (current_traceframe >= 0) |
712 | { | |
713 | ULONGEST nbytes; | |
714 | ULONGEST length = len; | |
715 | ||
716 | if (traceframe_read_mem (current_traceframe, | |
717 | memaddr, myaddr, len, &nbytes)) | |
718 | return EIO; | |
719 | /* Data read from trace buffer, we're done. */ | |
764880b7 PA |
720 | if (nbytes > 0) |
721 | return nbytes; | |
219f2f23 | 722 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 723 | return -1; |
219f2f23 PA |
724 | /* Otherwise we have a valid readonly case, fall through. */ |
725 | /* (assume no half-trace half-real blocks for now) */ | |
726 | } | |
727 | ||
764880b7 PA |
728 | res = prepare_to_access_memory (); |
729 | if (res == 0) | |
90d74c30 | 730 | { |
764880b7 | 731 | res = read_inferior_memory (memaddr, myaddr, len); |
0146f85b | 732 | done_accessing_memory (); |
90d74c30 | 733 | |
764880b7 PA |
734 | return res == 0 ? len : -1; |
735 | } | |
736 | else | |
737 | return -1; | |
219f2f23 PA |
738 | } |
739 | ||
740 | /* Write trace frame or inferior memory. Actually, writing to trace | |
741 | frames is forbidden. */ | |
742 | ||
743 | static int | |
90d74c30 | 744 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
745 | { |
746 | if (current_traceframe >= 0) | |
747 | return EIO; | |
748 | else | |
90d74c30 PA |
749 | { |
750 | int ret; | |
751 | ||
752 | ret = prepare_to_access_memory (); | |
753 | if (ret == 0) | |
754 | { | |
755 | ret = write_inferior_memory (memaddr, myaddr, len); | |
0146f85b | 756 | done_accessing_memory (); |
90d74c30 PA |
757 | } |
758 | return ret; | |
759 | } | |
219f2f23 PA |
760 | } |
761 | ||
08388c79 DE |
762 | /* Subroutine of handle_search_memory to simplify it. */ |
763 | ||
764 | static int | |
765 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
766 | gdb_byte *pattern, unsigned pattern_len, | |
767 | gdb_byte *search_buf, | |
768 | unsigned chunk_size, unsigned search_buf_size, | |
769 | CORE_ADDR *found_addrp) | |
770 | { | |
771 | /* Prime the search buffer. */ | |
772 | ||
764880b7 PA |
773 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
774 | != search_buf_size) | |
08388c79 | 775 | { |
b3dc46ff AB |
776 | warning ("Unable to access %ld bytes of target " |
777 | "memory at 0x%lx, halting search.", | |
778 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
779 | return -1; |
780 | } | |
781 | ||
782 | /* Perform the search. | |
783 | ||
784 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
785 | When we've scanned N bytes we copy the trailing bytes to the start and | |
786 | read in another N bytes. */ | |
787 | ||
788 | while (search_space_len >= pattern_len) | |
789 | { | |
790 | gdb_byte *found_ptr; | |
791 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
792 | ? search_space_len | |
793 | : search_buf_size); | |
794 | ||
795 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); | |
796 | ||
797 | if (found_ptr != NULL) | |
798 | { | |
799 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
800 | *found_addrp = found_addr; | |
801 | return 1; | |
802 | } | |
803 | ||
804 | /* Not found in this chunk, skip to next chunk. */ | |
805 | ||
806 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
807 | if (search_space_len >= chunk_size) | |
808 | search_space_len -= chunk_size; | |
809 | else | |
810 | search_space_len = 0; | |
811 | ||
812 | if (search_space_len >= pattern_len) | |
813 | { | |
814 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 815 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
816 | int nr_to_read; |
817 | ||
818 | /* Copy the trailing part of the previous iteration to the front | |
819 | of the buffer for the next iteration. */ | |
820 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
821 | ||
822 | nr_to_read = (search_space_len - keep_len < chunk_size | |
823 | ? search_space_len - keep_len | |
824 | : chunk_size); | |
825 | ||
90d74c30 | 826 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 827 | nr_to_read) != search_buf_size) |
08388c79 | 828 | { |
b3dc46ff | 829 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 830 | "at 0x%lx, halting search.", |
b3dc46ff | 831 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
832 | return -1; |
833 | } | |
834 | ||
835 | start_addr += chunk_size; | |
836 | } | |
837 | } | |
838 | ||
839 | /* Not found. */ | |
840 | ||
841 | return 0; | |
842 | } | |
843 | ||
844 | /* Handle qSearch:memory packets. */ | |
845 | ||
846 | static void | |
847 | handle_search_memory (char *own_buf, int packet_len) | |
848 | { | |
849 | CORE_ADDR start_addr; | |
850 | CORE_ADDR search_space_len; | |
851 | gdb_byte *pattern; | |
852 | unsigned int pattern_len; | |
853 | /* NOTE: also defined in find.c testcase. */ | |
854 | #define SEARCH_CHUNK_SIZE 16000 | |
855 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
856 | /* Buffer to hold memory contents for searching. */ | |
857 | gdb_byte *search_buf; | |
858 | unsigned search_buf_size; | |
859 | int found; | |
860 | CORE_ADDR found_addr; | |
861 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
862 | ||
aef93bd7 | 863 | pattern = malloc (packet_len); |
08388c79 DE |
864 | if (pattern == NULL) |
865 | { | |
5e1471f5 | 866 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
867 | strcpy (own_buf, "E00"); |
868 | return; | |
869 | } | |
870 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
871 | packet_len - cmd_name_len, | |
872 | &start_addr, &search_space_len, | |
873 | pattern, &pattern_len) < 0) | |
874 | { | |
875 | free (pattern); | |
5e1471f5 | 876 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
877 | strcpy (own_buf, "E00"); |
878 | return; | |
879 | } | |
880 | ||
881 | search_buf_size = chunk_size + pattern_len - 1; | |
882 | ||
883 | /* No point in trying to allocate a buffer larger than the search space. */ | |
884 | if (search_space_len < search_buf_size) | |
885 | search_buf_size = search_space_len; | |
886 | ||
aef93bd7 | 887 | search_buf = malloc (search_buf_size); |
08388c79 DE |
888 | if (search_buf == NULL) |
889 | { | |
890 | free (pattern); | |
5e1471f5 | 891 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
892 | strcpy (own_buf, "E00"); |
893 | return; | |
894 | } | |
895 | ||
896 | found = handle_search_memory_1 (start_addr, search_space_len, | |
897 | pattern, pattern_len, | |
898 | search_buf, chunk_size, search_buf_size, | |
899 | &found_addr); | |
900 | ||
901 | if (found > 0) | |
902 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
903 | else if (found == 0) | |
904 | strcpy (own_buf, "0"); | |
905 | else | |
906 | strcpy (own_buf, "E00"); | |
907 | ||
908 | free (search_buf); | |
909 | free (pattern); | |
910 | } | |
911 | ||
2d717e4f DJ |
912 | #define require_running(BUF) \ |
913 | if (!target_running ()) \ | |
914 | { \ | |
915 | write_enn (BUF); \ | |
916 | return; \ | |
917 | } | |
918 | ||
cdbfd419 PP |
919 | /* Handle monitor commands not handled by target-specific handlers. */ |
920 | ||
921 | static void | |
d73f2619 | 922 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
923 | { |
924 | if (strcmp (mon, "set debug 1") == 0) | |
925 | { | |
926 | debug_threads = 1; | |
927 | monitor_output ("Debug output enabled.\n"); | |
928 | } | |
929 | else if (strcmp (mon, "set debug 0") == 0) | |
930 | { | |
931 | debug_threads = 0; | |
932 | monitor_output ("Debug output disabled.\n"); | |
933 | } | |
934 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
935 | { | |
936 | debug_hw_points = 1; | |
937 | monitor_output ("H/W point debugging output enabled.\n"); | |
938 | } | |
939 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
940 | { | |
941 | debug_hw_points = 0; | |
942 | monitor_output ("H/W point debugging output disabled.\n"); | |
943 | } | |
944 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
945 | { | |
946 | remote_debug = 1; | |
947 | monitor_output ("Protocol debug output enabled.\n"); | |
948 | } | |
949 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
950 | { | |
951 | remote_debug = 0; | |
952 | monitor_output ("Protocol debug output disabled.\n"); | |
953 | } | |
954 | else if (strcmp (mon, "help") == 0) | |
955 | monitor_show_help (); | |
956 | else if (strcmp (mon, "exit") == 0) | |
957 | exit_requested = 1; | |
958 | else | |
959 | { | |
960 | monitor_output ("Unknown monitor command.\n\n"); | |
961 | monitor_show_help (); | |
962 | write_enn (own_buf); | |
963 | } | |
964 | } | |
965 | ||
d08aafef PA |
966 | /* Associates a callback with each supported qXfer'able object. */ |
967 | ||
968 | struct qxfer | |
969 | { | |
970 | /* The object this handler handles. */ | |
971 | const char *object; | |
972 | ||
973 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
974 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
975 | the starting point. The ANNEX can be used to provide additional | |
976 | data-specific information to the target. | |
977 | ||
978 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
979 | further transfer is possible, -1 on error, -2 when the transfer |
980 | is not supported, and -3 on a verbose error message that should | |
981 | be preserved. Return of a positive value smaller than LEN does | |
982 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
983 | |
984 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
985 | int (*xfer) (const char *annex, | |
986 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
987 | ULONGEST offset, LONGEST len); | |
988 | }; | |
989 | ||
990 | /* Handle qXfer:auxv:read. */ | |
991 | ||
992 | static int | |
993 | handle_qxfer_auxv (const char *annex, | |
994 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
995 | ULONGEST offset, LONGEST len) | |
996 | { | |
997 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
998 | return -2; | |
999 | ||
1000 | if (annex[0] != '\0' || !target_running ()) | |
1001 | return -1; | |
1002 | ||
1003 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1004 | } | |
1005 | ||
1006 | /* Handle qXfer:features:read. */ | |
1007 | ||
1008 | static int | |
1009 | handle_qxfer_features (const char *annex, | |
1010 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1011 | ULONGEST offset, LONGEST len) | |
1012 | { | |
1013 | const char *document; | |
1014 | size_t total_len; | |
1015 | ||
1016 | if (writebuf != NULL) | |
1017 | return -2; | |
1018 | ||
1019 | if (!target_running ()) | |
1020 | return -1; | |
1021 | ||
1022 | /* Grab the correct annex. */ | |
1023 | document = get_features_xml (annex); | |
1024 | if (document == NULL) | |
1025 | return -1; | |
1026 | ||
1027 | total_len = strlen (document); | |
1028 | ||
1029 | if (offset > total_len) | |
1030 | return -1; | |
1031 | ||
1032 | if (offset + len > total_len) | |
1033 | len = total_len - offset; | |
1034 | ||
1035 | memcpy (readbuf, document + offset, len); | |
1036 | return len; | |
1037 | } | |
1038 | ||
1039 | /* Handle qXfer:libraries:read. */ | |
1040 | ||
1041 | static int | |
1042 | handle_qxfer_libraries (const char *annex, | |
1043 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1044 | ULONGEST offset, LONGEST len) | |
1045 | { | |
1046 | unsigned int total_len; | |
1047 | char *document, *p; | |
1048 | struct inferior_list_entry *dll_ptr; | |
1049 | ||
1050 | if (writebuf != NULL) | |
1051 | return -2; | |
1052 | ||
1053 | if (annex[0] != '\0' || !target_running ()) | |
1054 | return -1; | |
1055 | ||
1056 | /* Over-estimate the necessary memory. Assume that every character | |
1057 | in the library name must be escaped. */ | |
1058 | total_len = 64; | |
1059 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
1060 | total_len += 128 + 6 * strlen (((struct dll_info *) dll_ptr)->name); | |
1061 | ||
1062 | document = malloc (total_len); | |
1063 | if (document == NULL) | |
1064 | return -1; | |
1065 | ||
1066 | strcpy (document, "<library-list>\n"); | |
1067 | p = document + strlen (document); | |
1068 | ||
1069 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
1070 | { | |
1071 | struct dll_info *dll = (struct dll_info *) dll_ptr; | |
1072 | char *name; | |
1073 | ||
1074 | strcpy (p, " <library name=\""); | |
1075 | p = p + strlen (p); | |
1076 | name = xml_escape_text (dll->name); | |
1077 | strcpy (p, name); | |
1078 | free (name); | |
1079 | p = p + strlen (p); | |
1080 | strcpy (p, "\"><segment address=\""); | |
1081 | p = p + strlen (p); | |
1082 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1083 | p = p + strlen (p); | |
1084 | strcpy (p, "\"/></library>\n"); | |
1085 | p = p + strlen (p); | |
1086 | } | |
1087 | ||
1088 | strcpy (p, "</library-list>\n"); | |
1089 | ||
1090 | total_len = strlen (document); | |
1091 | ||
1092 | if (offset > total_len) | |
1093 | { | |
1094 | free (document); | |
1095 | return -1; | |
1096 | } | |
1097 | ||
1098 | if (offset + len > total_len) | |
1099 | len = total_len - offset; | |
1100 | ||
1101 | memcpy (readbuf, document + offset, len); | |
1102 | free (document); | |
1103 | return len; | |
1104 | } | |
1105 | ||
2268b414 JK |
1106 | /* Handle qXfer:libraries-svr4:read. */ |
1107 | ||
1108 | static int | |
1109 | handle_qxfer_libraries_svr4 (const char *annex, | |
1110 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1111 | ULONGEST offset, LONGEST len) | |
1112 | { | |
1113 | if (writebuf != NULL) | |
1114 | return -2; | |
1115 | ||
b1fbec62 | 1116 | if (!target_running () || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1117 | return -1; |
1118 | ||
1119 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1120 | } | |
1121 | ||
d08aafef PA |
1122 | /* Handle qXfer:osadata:read. */ |
1123 | ||
1124 | static int | |
1125 | handle_qxfer_osdata (const char *annex, | |
1126 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1127 | ULONGEST offset, LONGEST len) | |
1128 | { | |
1129 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1130 | return -2; | |
1131 | ||
1132 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1133 | } | |
1134 | ||
1135 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1136 | ||
1137 | static int | |
1138 | handle_qxfer_siginfo (const char *annex, | |
1139 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1140 | ULONGEST offset, LONGEST len) | |
1141 | { | |
1142 | if (the_target->qxfer_siginfo == NULL) | |
1143 | return -2; | |
1144 | ||
1145 | if (annex[0] != '\0' || !target_running ()) | |
1146 | return -1; | |
1147 | ||
1148 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1149 | } | |
1150 | ||
1151 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1152 | ||
1153 | static int | |
1154 | handle_qxfer_spu (const char *annex, | |
1155 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1156 | ULONGEST offset, LONGEST len) | |
1157 | { | |
1158 | if (the_target->qxfer_spu == NULL) | |
1159 | return -2; | |
1160 | ||
1161 | if (!target_running ()) | |
1162 | return -1; | |
1163 | ||
1164 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1165 | } | |
1166 | ||
1167 | /* Handle qXfer:statictrace:read. */ | |
1168 | ||
1169 | static int | |
1170 | handle_qxfer_statictrace (const char *annex, | |
1171 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1172 | ULONGEST offset, LONGEST len) | |
1173 | { | |
1174 | ULONGEST nbytes; | |
1175 | ||
1176 | if (writebuf != NULL) | |
1177 | return -2; | |
1178 | ||
1179 | if (annex[0] != '\0' || !target_running () || current_traceframe == -1) | |
1180 | return -1; | |
1181 | ||
1182 | if (traceframe_read_sdata (current_traceframe, offset, | |
1183 | readbuf, len, &nbytes)) | |
1184 | return -1; | |
1185 | return nbytes; | |
1186 | } | |
1187 | ||
1188 | /* Helper for handle_qxfer_threads. */ | |
1189 | ||
dc146f7c | 1190 | static void |
d08aafef | 1191 | handle_qxfer_threads_proper (struct buffer *buffer) |
dc146f7c VP |
1192 | { |
1193 | struct inferior_list_entry *thread; | |
1194 | ||
1195 | buffer_grow_str (buffer, "<threads>\n"); | |
1196 | ||
1197 | for (thread = all_threads.head; thread; thread = thread->next) | |
1198 | { | |
1199 | ptid_t ptid = thread_to_gdb_id ((struct thread_info *)thread); | |
1200 | char ptid_s[100]; | |
3e10640f | 1201 | int core = target_core_of_thread (ptid); |
dc146f7c VP |
1202 | char core_s[21]; |
1203 | ||
1204 | write_ptid (ptid_s, ptid); | |
1205 | ||
dc146f7c VP |
1206 | if (core != -1) |
1207 | { | |
1208 | sprintf (core_s, "%d", core); | |
1209 | buffer_xml_printf (buffer, "<thread id=\"%s\" core=\"%s\"/>\n", | |
1210 | ptid_s, core_s); | |
1211 | } | |
1212 | else | |
1213 | { | |
1214 | buffer_xml_printf (buffer, "<thread id=\"%s\"/>\n", | |
1215 | ptid_s); | |
1216 | } | |
1217 | } | |
1218 | ||
1219 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1220 | } | |
1221 | ||
d08aafef PA |
1222 | /* Handle qXfer:threads:read. */ |
1223 | ||
dc146f7c | 1224 | static int |
d08aafef PA |
1225 | handle_qxfer_threads (const char *annex, |
1226 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1227 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1228 | { |
1229 | static char *result = 0; | |
1230 | static unsigned int result_length = 0; | |
1231 | ||
d08aafef PA |
1232 | if (writebuf != NULL) |
1233 | return -2; | |
1234 | ||
1235 | if (!target_running () || annex[0] != '\0') | |
1236 | return -1; | |
dc146f7c VP |
1237 | |
1238 | if (offset == 0) | |
1239 | { | |
1240 | struct buffer buffer; | |
1241 | /* When asked for data at offset 0, generate everything and store into | |
1242 | 'result'. Successive reads will be served off 'result'. */ | |
1243 | if (result) | |
1244 | free (result); | |
1245 | ||
1246 | buffer_init (&buffer); | |
1247 | ||
d08aafef | 1248 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1249 | |
1250 | result = buffer_finish (&buffer); | |
1251 | result_length = strlen (result); | |
1252 | buffer_free (&buffer); | |
1253 | } | |
1254 | ||
1255 | if (offset >= result_length) | |
1256 | { | |
1257 | /* We're out of data. */ | |
1258 | free (result); | |
1259 | result = NULL; | |
1260 | result_length = 0; | |
1261 | return 0; | |
1262 | } | |
1263 | ||
d08aafef PA |
1264 | if (len > result_length - offset) |
1265 | len = result_length - offset; | |
1266 | ||
1267 | memcpy (readbuf, result + offset, len); | |
1268 | ||
1269 | return len; | |
1270 | } | |
1271 | ||
b3b9301e PA |
1272 | /* Handle qXfer:traceframe-info:read. */ |
1273 | ||
1274 | static int | |
1275 | handle_qxfer_traceframe_info (const char *annex, | |
1276 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1277 | ULONGEST offset, LONGEST len) | |
1278 | { | |
1279 | static char *result = 0; | |
1280 | static unsigned int result_length = 0; | |
1281 | ||
1282 | if (writebuf != NULL) | |
1283 | return -2; | |
1284 | ||
1285 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1286 | return -1; | |
1287 | ||
1288 | if (offset == 0) | |
1289 | { | |
1290 | struct buffer buffer; | |
1291 | ||
1292 | /* When asked for data at offset 0, generate everything and | |
1293 | store into 'result'. Successive reads will be served off | |
1294 | 'result'. */ | |
1295 | free (result); | |
1296 | ||
1297 | buffer_init (&buffer); | |
1298 | ||
1299 | traceframe_read_info (current_traceframe, &buffer); | |
1300 | ||
1301 | result = buffer_finish (&buffer); | |
1302 | result_length = strlen (result); | |
1303 | buffer_free (&buffer); | |
1304 | } | |
1305 | ||
1306 | if (offset >= result_length) | |
1307 | { | |
1308 | /* We're out of data. */ | |
1309 | free (result); | |
1310 | result = NULL; | |
1311 | result_length = 0; | |
1312 | return 0; | |
1313 | } | |
1314 | ||
1315 | if (len > result_length - offset) | |
1316 | len = result_length - offset; | |
1317 | ||
1318 | memcpy (readbuf, result + offset, len); | |
1319 | return len; | |
1320 | } | |
1321 | ||
78d85199 YQ |
1322 | /* Handle qXfer:fdpic:read. */ |
1323 | ||
1324 | static int | |
1325 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1326 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1327 | { | |
1328 | if (the_target->read_loadmap == NULL) | |
1329 | return -2; | |
1330 | ||
1331 | if (!target_running ()) | |
1332 | return -1; | |
1333 | ||
1334 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1335 | } | |
1336 | ||
9accd112 MM |
1337 | /* Handle qXfer:btrace:read. */ |
1338 | ||
1339 | static int | |
1340 | handle_qxfer_btrace (const char *annex, | |
1341 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1342 | ULONGEST offset, LONGEST len) | |
1343 | { | |
1344 | static struct buffer cache; | |
1345 | struct thread_info *thread; | |
1346 | int type; | |
1347 | ||
1348 | if (the_target->read_btrace == NULL || writebuf != NULL) | |
1349 | return -2; | |
1350 | ||
1351 | if (!target_running ()) | |
1352 | return -1; | |
1353 | ||
1354 | if (ptid_equal (general_thread, null_ptid) | |
1355 | || ptid_equal (general_thread, minus_one_ptid)) | |
1356 | { | |
1357 | strcpy (own_buf, "E.Must select a single thread."); | |
1358 | return -3; | |
1359 | } | |
1360 | ||
1361 | thread = find_thread_ptid (general_thread); | |
1362 | if (thread == NULL) | |
1363 | { | |
1364 | strcpy (own_buf, "E.No such thread."); | |
1365 | return -3; | |
1366 | } | |
1367 | ||
1368 | if (thread->btrace == NULL) | |
1369 | { | |
1370 | strcpy (own_buf, "E.Btrace not enabled."); | |
1371 | return -3; | |
1372 | } | |
1373 | ||
1374 | if (strcmp (annex, "all") == 0) | |
1375 | type = btrace_read_all; | |
1376 | else if (strcmp (annex, "new") == 0) | |
1377 | type = btrace_read_new; | |
1378 | else | |
1379 | { | |
1380 | strcpy (own_buf, "E.Bad annex."); | |
1381 | return -3; | |
1382 | } | |
1383 | ||
1384 | if (offset == 0) | |
1385 | { | |
1386 | buffer_free (&cache); | |
1387 | ||
1388 | target_read_btrace (thread->btrace, &cache, type); | |
1389 | } | |
1390 | else if (offset > cache.used_size) | |
1391 | { | |
1392 | buffer_free (&cache); | |
1393 | return -3; | |
1394 | } | |
1395 | ||
1396 | if (len > cache.used_size - offset) | |
1397 | len = cache.used_size - offset; | |
1398 | ||
1399 | memcpy (readbuf, cache.buffer + offset, len); | |
1400 | ||
1401 | return len; | |
1402 | } | |
1403 | ||
d08aafef PA |
1404 | static const struct qxfer qxfer_packets[] = |
1405 | { | |
1406 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1407 | { "btrace", handle_qxfer_btrace }, |
78d85199 | 1408 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1409 | { "features", handle_qxfer_features }, |
1410 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1411 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1412 | { "osdata", handle_qxfer_osdata }, |
1413 | { "siginfo", handle_qxfer_siginfo }, | |
1414 | { "spu", handle_qxfer_spu }, | |
1415 | { "statictrace", handle_qxfer_statictrace }, | |
1416 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1417 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1418 | }; |
1419 | ||
1420 | static int | |
1421 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1422 | { | |
1423 | int i; | |
1424 | char *object; | |
1425 | char *rw; | |
1426 | char *annex; | |
1427 | char *offset; | |
1428 | ||
1429 | if (strncmp (own_buf, "qXfer:", 6) != 0) | |
1430 | return 0; | |
1431 | ||
1432 | /* Grab the object, r/w and annex. */ | |
1433 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1434 | { | |
1435 | write_enn (own_buf); | |
1436 | return 1; | |
1437 | } | |
1438 | ||
1439 | for (i = 0; | |
1440 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1441 | i++) | |
1442 | { | |
1443 | const struct qxfer *q = &qxfer_packets[i]; | |
1444 | ||
1445 | if (strcmp (object, q->object) == 0) | |
1446 | { | |
1447 | if (strcmp (rw, "read") == 0) | |
1448 | { | |
1449 | unsigned char *data; | |
1450 | int n; | |
1451 | CORE_ADDR ofs; | |
1452 | unsigned int len; | |
1453 | ||
1454 | /* Grab the offset and length. */ | |
1455 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
1456 | { | |
1457 | write_enn (own_buf); | |
1458 | return 1; | |
1459 | } | |
1460 | ||
1461 | /* Read one extra byte, as an indicator of whether there is | |
1462 | more. */ | |
1463 | if (len > PBUFSIZ - 2) | |
1464 | len = PBUFSIZ - 2; | |
1465 | data = malloc (len + 1); | |
1466 | if (data == NULL) | |
1467 | { | |
1468 | write_enn (own_buf); | |
1469 | return 1; | |
1470 | } | |
1471 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
1472 | if (n == -2) | |
1473 | { | |
1474 | free (data); | |
1475 | return 0; | |
1476 | } | |
5cc22e4c MM |
1477 | else if (n == -3) |
1478 | { | |
1479 | /* Preserve error message. */ | |
1480 | } | |
d08aafef PA |
1481 | else if (n < 0) |
1482 | write_enn (own_buf); | |
1483 | else if (n > len) | |
1484 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1485 | else | |
1486 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1487 | ||
1488 | free (data); | |
1489 | return 1; | |
1490 | } | |
1491 | else if (strcmp (rw, "write") == 0) | |
1492 | { | |
1493 | int n; | |
1494 | unsigned int len; | |
1495 | CORE_ADDR ofs; | |
1496 | unsigned char *data; | |
1497 | ||
1498 | strcpy (own_buf, "E00"); | |
1499 | data = malloc (packet_len - (offset - own_buf)); | |
1500 | if (data == NULL) | |
1501 | { | |
1502 | write_enn (own_buf); | |
1503 | return 1; | |
1504 | } | |
1505 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
1506 | &ofs, &len, data) < 0) | |
1507 | { | |
1508 | free (data); | |
1509 | write_enn (own_buf); | |
1510 | return 1; | |
1511 | } | |
1512 | ||
1513 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
1514 | if (n == -2) | |
1515 | { | |
1516 | free (data); | |
1517 | return 0; | |
1518 | } | |
5cc22e4c MM |
1519 | else if (n == -3) |
1520 | { | |
1521 | /* Preserve error message. */ | |
1522 | } | |
d08aafef PA |
1523 | else if (n < 0) |
1524 | write_enn (own_buf); | |
1525 | else | |
1526 | sprintf (own_buf, "%x", n); | |
dc146f7c | 1527 | |
d08aafef PA |
1528 | free (data); |
1529 | return 1; | |
1530 | } | |
dc146f7c | 1531 | |
d08aafef PA |
1532 | return 0; |
1533 | } | |
1534 | } | |
dc146f7c | 1535 | |
d08aafef | 1536 | return 0; |
dc146f7c VP |
1537 | } |
1538 | ||
30ba68cb MS |
1539 | /* Table used by the crc32 function to calcuate the checksum. */ |
1540 | ||
1541 | static unsigned int crc32_table[256] = | |
1542 | {0, 0}; | |
1543 | ||
1544 | /* Compute 32 bit CRC from inferior memory. | |
1545 | ||
1546 | On success, return 32 bit CRC. | |
1547 | On failure, return (unsigned long long) -1. */ | |
1548 | ||
1549 | static unsigned long long | |
1550 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
1551 | { | |
1552 | if (!crc32_table[1]) | |
1553 | { | |
1554 | /* Initialize the CRC table and the decoding table. */ | |
1555 | int i, j; | |
1556 | unsigned int c; | |
1557 | ||
1558 | for (i = 0; i < 256; i++) | |
1559 | { | |
1560 | for (c = i << 24, j = 8; j > 0; --j) | |
1561 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
1562 | crc32_table[i] = c; | |
1563 | } | |
1564 | } | |
1565 | ||
1566 | while (len--) | |
1567 | { | |
1568 | unsigned char byte = 0; | |
1569 | ||
1570 | /* Return failure if memory read fails. */ | |
1571 | if (read_inferior_memory (base, &byte, 1) != 0) | |
1572 | return (unsigned long long) -1; | |
1573 | ||
1574 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ byte) & 255]; | |
1575 | base++; | |
1576 | } | |
1577 | return (unsigned long long) crc; | |
1578 | } | |
1579 | ||
ce3a066d | 1580 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 1581 | |
ce3a066d | 1582 | void |
0e7f50da | 1583 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 1584 | { |
0d62e5e8 DJ |
1585 | static struct inferior_list_entry *thread_ptr; |
1586 | ||
bb63802a | 1587 | /* Reply the current thread id. */ |
db42f210 | 1588 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 1589 | { |
95954743 | 1590 | ptid_t gdb_id; |
2d717e4f | 1591 | require_running (own_buf); |
bd99dc85 | 1592 | |
95954743 PA |
1593 | if (!ptid_equal (general_thread, null_ptid) |
1594 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
1595 | gdb_id = general_thread; |
1596 | else | |
1597 | { | |
1598 | thread_ptr = all_threads.head; | |
1599 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1600 | } | |
1601 | ||
95954743 PA |
1602 | sprintf (own_buf, "QC"); |
1603 | own_buf += 2; | |
4b812f4e | 1604 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
1605 | return; |
1606 | } | |
1607 | ||
ce3a066d DJ |
1608 | if (strcmp ("qSymbol::", own_buf) == 0) |
1609 | { | |
d3bbe7a0 PA |
1610 | /* GDB is suggesting new symbols have been loaded. This may |
1611 | mean a new shared library has been detected as loaded, so | |
1612 | take the opportunity to check if breakpoints we think are | |
1613 | inserted, still are. Note that it isn't guaranteed that | |
1614 | we'll see this when a shared library is loaded, and nor will | |
1615 | we see this for unloads (although breakpoints in unloaded | |
1616 | libraries shouldn't trigger), as GDB may not find symbols for | |
1617 | the library at all. We also re-validate breakpoints when we | |
1618 | see a second GDB breakpoint for the same address, and or when | |
1619 | we access breakpoint shadows. */ | |
1620 | validate_breakpoints (); | |
1621 | ||
fa593d66 PA |
1622 | if (target_supports_tracepoints ()) |
1623 | tracepoint_look_up_symbols (); | |
1624 | ||
2d717e4f | 1625 | if (target_running () && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
1626 | (*the_target->look_up_symbols) (); |
1627 | ||
ce3a066d DJ |
1628 | strcpy (own_buf, "OK"); |
1629 | return; | |
1630 | } | |
1631 | ||
db42f210 | 1632 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 1633 | { |
db42f210 | 1634 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 1635 | { |
95954743 PA |
1636 | ptid_t gdb_id; |
1637 | ||
db42f210 PA |
1638 | require_running (own_buf); |
1639 | thread_ptr = all_threads.head; | |
95954743 PA |
1640 | |
1641 | *own_buf++ = 'm'; | |
1642 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1643 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
1644 | thread_ptr = thread_ptr->next; |
1645 | return; | |
1646 | } | |
db42f210 PA |
1647 | |
1648 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 1649 | { |
95954743 PA |
1650 | ptid_t gdb_id; |
1651 | ||
db42f210 PA |
1652 | require_running (own_buf); |
1653 | if (thread_ptr != NULL) | |
1654 | { | |
95954743 PA |
1655 | *own_buf++ = 'm'; |
1656 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1657 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
1658 | thread_ptr = thread_ptr->next; |
1659 | return; | |
1660 | } | |
1661 | else | |
1662 | { | |
1663 | sprintf (own_buf, "l"); | |
1664 | return; | |
1665 | } | |
0d62e5e8 DJ |
1666 | } |
1667 | } | |
aa691b87 | 1668 | |
52fb6437 NS |
1669 | if (the_target->read_offsets != NULL |
1670 | && strcmp ("qOffsets", own_buf) == 0) | |
1671 | { | |
1672 | CORE_ADDR text, data; | |
2d717e4f DJ |
1673 | |
1674 | require_running (own_buf); | |
52fb6437 NS |
1675 | if (the_target->read_offsets (&text, &data)) |
1676 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
1677 | (long)text, (long)data, (long)data); | |
1678 | else | |
1679 | write_enn (own_buf); | |
1b3f6016 | 1680 | |
52fb6437 NS |
1681 | return; |
1682 | } | |
1683 | ||
be2a5f71 DJ |
1684 | /* Protocol features query. */ |
1685 | if (strncmp ("qSupported", own_buf, 10) == 0 | |
1686 | && (own_buf[10] == ':' || own_buf[10] == '\0')) | |
1687 | { | |
95954743 | 1688 | char *p = &own_buf[10]; |
fa593d66 | 1689 | int gdb_supports_qRelocInsn = 0; |
95954743 | 1690 | |
1570b33e L |
1691 | /* Start processing qSupported packet. */ |
1692 | target_process_qsupported (NULL); | |
1693 | ||
95954743 PA |
1694 | /* Process each feature being provided by GDB. The first |
1695 | feature will follow a ':', and latter features will follow | |
1696 | ';'. */ | |
1697 | if (*p == ':') | |
d149dd1d PA |
1698 | { |
1699 | char **qsupported = NULL; | |
1700 | int count = 0; | |
1701 | int i; | |
1702 | ||
1703 | /* Two passes, to avoid nested strtok calls in | |
1704 | target_process_qsupported. */ | |
1705 | for (p = strtok (p + 1, ";"); | |
1706 | p != NULL; | |
1707 | p = strtok (NULL, ";")) | |
1708 | { | |
1709 | count++; | |
1710 | qsupported = xrealloc (qsupported, count * sizeof (char *)); | |
1711 | qsupported[count - 1] = xstrdup (p); | |
1712 | } | |
1713 | ||
1714 | for (i = 0; i < count; i++) | |
1715 | { | |
1716 | p = qsupported[i]; | |
1717 | if (strcmp (p, "multiprocess+") == 0) | |
1718 | { | |
1719 | /* GDB supports and wants multi-process support if | |
1720 | possible. */ | |
1721 | if (target_supports_multi_process ()) | |
1722 | multi_process = 1; | |
1723 | } | |
fa593d66 PA |
1724 | else if (strcmp (p, "qRelocInsn+") == 0) |
1725 | { | |
1726 | /* GDB supports relocate instruction requests. */ | |
1727 | gdb_supports_qRelocInsn = 1; | |
1728 | } | |
d149dd1d PA |
1729 | else |
1730 | target_process_qsupported (p); | |
1731 | ||
1732 | free (p); | |
1733 | } | |
1734 | ||
1735 | free (qsupported); | |
1736 | } | |
95954743 | 1737 | |
9b224c5e PA |
1738 | sprintf (own_buf, |
1739 | "PacketSize=%x;QPassSignals+;QProgramSignals+", | |
1740 | PBUFSIZ - 1); | |
0876f84a | 1741 | |
2268b414 | 1742 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
1743 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
1744 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
1745 | else |
1746 | { | |
1747 | /* We do not have any hook to indicate whether the non-SVR4 target | |
1748 | backend supports qXfer:libraries:read, so always report it. */ | |
1749 | strcat (own_buf, ";qXfer:libraries:read+"); | |
1750 | } | |
255e7678 | 1751 | |
0876f84a | 1752 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 1753 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 1754 | |
0e7f50da UW |
1755 | if (the_target->qxfer_spu != NULL) |
1756 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 1757 | |
4aa995e1 PA |
1758 | if (the_target->qxfer_siginfo != NULL) |
1759 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
1760 | ||
78d85199 YQ |
1761 | if (the_target->read_loadmap != NULL) |
1762 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
1763 | ||
221c031f UW |
1764 | /* We always report qXfer:features:read, as targets may |
1765 | install XML files on a subsequent call to arch_setup. | |
1766 | If we reported to GDB on startup that we don't support | |
1767 | qXfer:feature:read at all, we will never be re-queried. */ | |
1768 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 1769 | |
a6f3e723 SL |
1770 | if (transport_is_reliable) |
1771 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
1772 | |
1773 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 1774 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 1775 | |
cf8fd78b PA |
1776 | if (target_supports_multi_process ()) |
1777 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 1778 | |
bd99dc85 PA |
1779 | if (target_supports_non_stop ()) |
1780 | strcat (own_buf, ";QNonStop+"); | |
1781 | ||
03583c20 UW |
1782 | if (target_supports_disable_randomization ()) |
1783 | strcat (own_buf, ";QDisableRandomization+"); | |
1784 | ||
dc146f7c VP |
1785 | strcat (own_buf, ";qXfer:threads:read+"); |
1786 | ||
219f2f23 PA |
1787 | if (target_supports_tracepoints ()) |
1788 | { | |
1789 | strcat (own_buf, ";ConditionalTracepoints+"); | |
1790 | strcat (own_buf, ";TraceStateVariables+"); | |
1791 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 1792 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
1793 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
1794 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 1795 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 1796 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 1797 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 1798 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 1799 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 1800 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 1801 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
1802 | } |
1803 | ||
d3ce09f5 | 1804 | /* Support target-side breakpoint conditions and commands. */ |
9f3a5c85 | 1805 | strcat (own_buf, ";ConditionalBreakpoints+"); |
d3ce09f5 | 1806 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 1807 | |
d1feda86 YQ |
1808 | if (target_supports_agent ()) |
1809 | strcat (own_buf, ";QAgent+"); | |
1810 | ||
9accd112 MM |
1811 | if (target_supports_btrace ()) |
1812 | { | |
1813 | strcat (own_buf, ";Qbtrace:bts+"); | |
1814 | strcat (own_buf, ";Qbtrace:off+"); | |
1815 | strcat (own_buf, ";qXfer:btrace:read+"); | |
1816 | } | |
1817 | ||
be2a5f71 DJ |
1818 | return; |
1819 | } | |
1820 | ||
dae5f5cf DJ |
1821 | /* Thread-local storage support. */ |
1822 | if (the_target->get_tls_address != NULL | |
1823 | && strncmp ("qGetTLSAddr:", own_buf, 12) == 0) | |
1824 | { | |
1825 | char *p = own_buf + 12; | |
5b1c542e | 1826 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 1827 | int i, err; |
95954743 | 1828 | ptid_t ptid = null_ptid; |
dae5f5cf | 1829 | |
2d717e4f DJ |
1830 | require_running (own_buf); |
1831 | ||
dae5f5cf DJ |
1832 | for (i = 0; i < 3; i++) |
1833 | { | |
1834 | char *p2; | |
1835 | int len; | |
1836 | ||
1837 | if (p == NULL) | |
1838 | break; | |
1839 | ||
1840 | p2 = strchr (p, ','); | |
1841 | if (p2) | |
1842 | { | |
1843 | len = p2 - p; | |
1844 | p2++; | |
1845 | } | |
1846 | else | |
1847 | { | |
1848 | len = strlen (p); | |
1849 | p2 = NULL; | |
1850 | } | |
1851 | ||
5b1c542e | 1852 | if (i == 0) |
95954743 | 1853 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
1854 | else |
1855 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
1856 | p = p2; |
1857 | } | |
1858 | ||
1859 | if (p != NULL || i < 3) | |
1860 | err = 1; | |
1861 | else | |
1862 | { | |
e09875d4 | 1863 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
1864 | |
1865 | if (thread == NULL) | |
1866 | err = 2; | |
1867 | else | |
5b1c542e | 1868 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
1869 | &address); |
1870 | } | |
1871 | ||
1872 | if (err == 0) | |
1873 | { | |
c6f46ca0 | 1874 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
1875 | return; |
1876 | } | |
1877 | else if (err > 0) | |
1878 | { | |
1879 | write_enn (own_buf); | |
1880 | return; | |
1881 | } | |
1882 | ||
1883 | /* Otherwise, pretend we do not understand this packet. */ | |
1884 | } | |
1885 | ||
711e434b PM |
1886 | /* Windows OS Thread Information Block address support. */ |
1887 | if (the_target->get_tib_address != NULL | |
1888 | && strncmp ("qGetTIBAddr:", own_buf, 12) == 0) | |
1889 | { | |
1890 | char *annex; | |
1891 | int n; | |
1892 | CORE_ADDR tlb; | |
1893 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
1894 | ||
1895 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
1896 | if (n == 1) | |
1897 | { | |
c6f46ca0 | 1898 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
1899 | return; |
1900 | } | |
1901 | else if (n == 0) | |
1902 | { | |
1903 | write_enn (own_buf); | |
1904 | return; | |
1905 | } | |
1906 | return; | |
1907 | } | |
1908 | ||
c74d0ad8 DJ |
1909 | /* Handle "monitor" commands. */ |
1910 | if (strncmp ("qRcmd,", own_buf, 6) == 0) | |
1911 | { | |
aef93bd7 | 1912 | char *mon = malloc (PBUFSIZ); |
c74d0ad8 DJ |
1913 | int len = strlen (own_buf + 6); |
1914 | ||
aef93bd7 DE |
1915 | if (mon == NULL) |
1916 | { | |
1917 | write_enn (own_buf); | |
1918 | return; | |
1919 | } | |
1920 | ||
d41b6bb4 | 1921 | if ((len % 2) != 0 || unhexify (mon, own_buf + 6, len / 2) != len / 2) |
c74d0ad8 DJ |
1922 | { |
1923 | write_enn (own_buf); | |
1924 | free (mon); | |
1925 | return; | |
1926 | } | |
1927 | mon[len / 2] = '\0'; | |
1928 | ||
1929 | write_ok (own_buf); | |
1930 | ||
cdbfd419 PP |
1931 | if (the_target->handle_monitor_command == NULL |
1932 | || (*the_target->handle_monitor_command) (mon) == 0) | |
1933 | /* Default processing. */ | |
d73f2619 | 1934 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
1935 | |
1936 | free (mon); | |
1937 | return; | |
1938 | } | |
1939 | ||
493e2a69 MS |
1940 | if (strncmp ("qSearch:memory:", own_buf, |
1941 | sizeof ("qSearch:memory:") - 1) == 0) | |
08388c79 DE |
1942 | { |
1943 | require_running (own_buf); | |
1944 | handle_search_memory (own_buf, packet_len); | |
1945 | return; | |
1946 | } | |
1947 | ||
95954743 PA |
1948 | if (strcmp (own_buf, "qAttached") == 0 |
1949 | || strncmp (own_buf, "qAttached:", sizeof ("qAttached:") - 1) == 0) | |
0b16c5cf | 1950 | { |
95954743 PA |
1951 | struct process_info *process; |
1952 | ||
1953 | if (own_buf[sizeof ("qAttached") - 1]) | |
1954 | { | |
1955 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
1956 | process = (struct process_info *) | |
1957 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
1958 | } | |
1959 | else | |
1960 | { | |
1961 | require_running (own_buf); | |
1962 | process = current_process (); | |
1963 | } | |
1964 | ||
1965 | if (process == NULL) | |
1966 | { | |
1967 | write_enn (own_buf); | |
1968 | return; | |
1969 | } | |
1970 | ||
1971 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
1972 | return; |
1973 | } | |
1974 | ||
30ba68cb MS |
1975 | if (strncmp ("qCRC:", own_buf, 5) == 0) |
1976 | { | |
1977 | /* CRC check (compare-section). */ | |
1978 | char *comma; | |
aca22551 | 1979 | ULONGEST base; |
30ba68cb MS |
1980 | int len; |
1981 | unsigned long long crc; | |
1982 | ||
1983 | require_running (own_buf); | |
aca22551 | 1984 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
1985 | if (*comma++ != ',') |
1986 | { | |
1987 | write_enn (own_buf); | |
1988 | return; | |
1989 | } | |
1990 | len = strtoul (comma, NULL, 16); | |
1991 | crc = crc32 (base, len, 0xffffffff); | |
1992 | /* Check for memory failure. */ | |
1993 | if (crc == (unsigned long long) -1) | |
1994 | { | |
1995 | write_enn (own_buf); | |
1996 | return; | |
1997 | } | |
1998 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
1999 | return; | |
2000 | } | |
2001 | ||
d08aafef PA |
2002 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2003 | return; | |
2004 | ||
219f2f23 PA |
2005 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2006 | return; | |
2007 | ||
ce3a066d DJ |
2008 | /* Otherwise we didn't know what packet it was. Say we didn't |
2009 | understand it. */ | |
2010 | own_buf[0] = 0; | |
2011 | } | |
2012 | ||
ce1a5b52 PA |
2013 | static void gdb_wants_all_threads_stopped (void); |
2014 | ||
64386c31 DJ |
2015 | /* Parse vCont packets. */ |
2016 | void | |
5b1c542e | 2017 | handle_v_cont (char *own_buf) |
64386c31 DJ |
2018 | { |
2019 | char *p, *q; | |
2020 | int n = 0, i = 0; | |
2bd7c093 | 2021 | struct thread_resume *resume_info; |
95954743 | 2022 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
2023 | |
2024 | /* Count the number of semicolons in the packet. There should be one | |
2025 | for every action. */ | |
2026 | p = &own_buf[5]; | |
2027 | while (p) | |
2028 | { | |
2029 | n++; | |
2030 | p++; | |
2031 | p = strchr (p, ';'); | |
2032 | } | |
2bd7c093 PA |
2033 | |
2034 | resume_info = malloc (n * sizeof (resume_info[0])); | |
aef93bd7 DE |
2035 | if (resume_info == NULL) |
2036 | goto err; | |
64386c31 | 2037 | |
64386c31 | 2038 | p = &own_buf[5]; |
64386c31 DJ |
2039 | while (*p) |
2040 | { | |
2041 | p++; | |
2042 | ||
c2d6af84 PA |
2043 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2044 | ||
64386c31 | 2045 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2046 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2047 | else if (p[0] == 'r') |
2048 | resume_info[i].kind = resume_step; | |
64386c31 | 2049 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2050 | resume_info[i].kind = resume_continue; |
2051 | else if (p[0] == 't') | |
2052 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2053 | else |
2054 | goto err; | |
2055 | ||
2056 | if (p[0] == 'S' || p[0] == 'C') | |
2057 | { | |
2058 | int sig; | |
2059 | sig = strtol (p + 1, &q, 16); | |
2060 | if (p == q) | |
2061 | goto err; | |
2062 | p = q; | |
2063 | ||
2ea28649 | 2064 | if (!gdb_signal_to_host_p (sig)) |
64386c31 | 2065 | goto err; |
2ea28649 | 2066 | resume_info[i].sig = gdb_signal_to_host (sig); |
64386c31 | 2067 | } |
c2d6af84 PA |
2068 | else if (p[0] == 'r') |
2069 | { | |
6740dc9c | 2070 | ULONGEST addr; |
c2d6af84 | 2071 | |
6740dc9c PA |
2072 | p = unpack_varlen_hex (p + 1, &addr); |
2073 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2074 | |
6740dc9c PA |
2075 | if (*p != ',') |
2076 | goto err; | |
c2d6af84 | 2077 | |
6740dc9c PA |
2078 | p = unpack_varlen_hex (p + 1, &addr); |
2079 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2080 | } |
64386c31 DJ |
2081 | else |
2082 | { | |
64386c31 DJ |
2083 | p = p + 1; |
2084 | } | |
2085 | ||
2086 | if (p[0] == 0) | |
2087 | { | |
95954743 | 2088 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2089 | default_action = resume_info[i]; |
2090 | ||
2091 | /* Note: we don't increment i here, we'll overwrite this entry | |
2092 | the next time through. */ | |
2093 | } | |
2094 | else if (p[0] == ':') | |
2095 | { | |
95954743 | 2096 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2097 | |
64386c31 DJ |
2098 | if (p == q) |
2099 | goto err; | |
2100 | p = q; | |
2101 | if (p[0] != ';' && p[0] != 0) | |
2102 | goto err; | |
2103 | ||
95954743 | 2104 | resume_info[i].thread = ptid; |
a06660f7 | 2105 | |
64386c31 DJ |
2106 | i++; |
2107 | } | |
2108 | } | |
2109 | ||
2bd7c093 PA |
2110 | if (i < n) |
2111 | resume_info[i] = default_action; | |
64386c31 | 2112 | |
122f36ef PA |
2113 | /* `cont_thread' is still used in occasional places in the backend, |
2114 | to implement single-thread scheduler-locking. Doesn't make sense | |
0c9070b3 YQ |
2115 | to set it if we see a stop request, or a wildcard action (one |
2116 | with '-1' (all threads), or 'pPID.-1' (all threads of PID)). */ | |
bd99dc85 | 2117 | if (n == 1 |
122f36ef PA |
2118 | && !(ptid_equal (resume_info[0].thread, minus_one_ptid) |
2119 | || ptid_get_lwp (resume_info[0].thread) == -1) | |
bd99dc85 | 2120 | && resume_info[0].kind != resume_stop) |
64386c31 DJ |
2121 | cont_thread = resume_info[0].thread; |
2122 | else | |
95954743 | 2123 | cont_thread = minus_one_ptid; |
dc3f8883 | 2124 | set_desired_inferior (0); |
64386c31 | 2125 | |
bd99dc85 PA |
2126 | if (!non_stop) |
2127 | enable_async_io (); | |
2128 | ||
2bd7c093 | 2129 | (*the_target->resume) (resume_info, n); |
64386c31 DJ |
2130 | |
2131 | free (resume_info); | |
2132 | ||
bd99dc85 PA |
2133 | if (non_stop) |
2134 | write_ok (own_buf); | |
2135 | else | |
2136 | { | |
95954743 | 2137 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 2138 | |
d20a8ad9 PA |
2139 | if (last_status.kind != TARGET_WAITKIND_EXITED |
2140 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
2141 | current_inferior->last_status = last_status; | |
2142 | ||
ce1a5b52 PA |
2143 | /* From the client's perspective, all-stop mode always stops all |
2144 | threads implicitly (and the target backend has already done | |
2145 | so by now). Tag all threads as "want-stopped", so we don't | |
2146 | resume them implicitly without the client telling us to. */ | |
2147 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
2148 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2149 | disable_async_io (); | |
6bd31874 JB |
2150 | |
2151 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2152 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2153 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 | 2154 | } |
64386c31 DJ |
2155 | return; |
2156 | ||
2157 | err: | |
255e7678 | 2158 | write_enn (own_buf); |
64386c31 DJ |
2159 | free (resume_info); |
2160 | return; | |
2161 | } | |
2162 | ||
2d717e4f DJ |
2163 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
2164 | int | |
5b1c542e | 2165 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
2166 | { |
2167 | int pid; | |
2168 | ||
2169 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2170 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2171 | { |
aeba519e PA |
2172 | /* Don't report shared library events after attaching, even if |
2173 | some libraries are preloaded. GDB will always poll the | |
2174 | library list. Avoids the "stopped by shared library event" | |
2175 | notice on the GDB side. */ | |
2176 | dlls_changed = 0; | |
bd99dc85 PA |
2177 | |
2178 | if (non_stop) | |
2179 | { | |
2180 | /* In non-stop, we don't send a resume reply. Stop events | |
2181 | will follow up using the normal notification | |
2182 | mechanism. */ | |
2183 | write_ok (own_buf); | |
2184 | } | |
2185 | else | |
2186 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2187 | ||
2d717e4f DJ |
2188 | return 1; |
2189 | } | |
2190 | else | |
2191 | { | |
2192 | write_enn (own_buf); | |
2193 | return 0; | |
2194 | } | |
2195 | } | |
2196 | ||
2197 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2198 | static int | |
5b1c542e | 2199 | handle_v_run (char *own_buf) |
2d717e4f | 2200 | { |
aef93bd7 | 2201 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
2202 | int i, new_argc; |
2203 | ||
2204 | new_argc = 0; | |
2205 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2206 | { | |
2207 | p++; | |
2208 | new_argc++; | |
2209 | } | |
2210 | ||
aef93bd7 DE |
2211 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
2212 | if (new_argv == NULL) | |
2213 | { | |
2214 | write_enn (own_buf); | |
2215 | return 0; | |
2216 | } | |
2217 | ||
2d717e4f DJ |
2218 | i = 0; |
2219 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
2220 | { | |
2221 | next_p = strchr (p, ';'); | |
2222 | if (next_p == NULL) | |
2223 | next_p = p + strlen (p); | |
2224 | ||
2225 | if (i == 0 && p == next_p) | |
2226 | new_argv[i] = NULL; | |
2227 | else | |
2228 | { | |
aef93bd7 | 2229 | /* FIXME: Fail request if out of memory instead of dying. */ |
bca929d3 | 2230 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
2d717e4f DJ |
2231 | unhexify (new_argv[i], p, (next_p - p) / 2); |
2232 | new_argv[i][(next_p - p) / 2] = '\0'; | |
2233 | } | |
2234 | ||
2235 | if (*next_p) | |
2236 | next_p++; | |
2237 | i++; | |
2238 | } | |
2239 | new_argv[i] = NULL; | |
2240 | ||
2241 | if (new_argv[0] == NULL) | |
2242 | { | |
f142445f DJ |
2243 | /* GDB didn't specify a program to run. Use the program from the |
2244 | last run with the new argument list. */ | |
9b710a42 | 2245 | |
2d717e4f DJ |
2246 | if (program_argv == NULL) |
2247 | { | |
2248 | write_enn (own_buf); | |
b2c04452 | 2249 | freeargv (new_argv); |
2d717e4f DJ |
2250 | return 0; |
2251 | } | |
2252 | ||
aef93bd7 DE |
2253 | new_argv[0] = strdup (program_argv[0]); |
2254 | if (new_argv[0] == NULL) | |
2255 | { | |
aef93bd7 | 2256 | write_enn (own_buf); |
b2c04452 | 2257 | freeargv (new_argv); |
aef93bd7 | 2258 | return 0; |
1b3f6016 | 2259 | } |
2d717e4f | 2260 | } |
f142445f | 2261 | |
aef93bd7 DE |
2262 | /* Free the old argv and install the new one. */ |
2263 | freeargv (program_argv); | |
f142445f | 2264 | program_argv = new_argv; |
2d717e4f | 2265 | |
5b1c542e PA |
2266 | start_inferior (program_argv); |
2267 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 2268 | { |
5b1c542e | 2269 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
2270 | |
2271 | /* In non-stop, sending a resume reply doesn't set the general | |
2272 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
2273 | query which is the main thread of the new inferior. */ | |
2274 | if (non_stop) | |
2275 | general_thread = last_ptid; | |
2276 | ||
2d717e4f DJ |
2277 | return 1; |
2278 | } | |
2279 | else | |
2280 | { | |
2281 | write_enn (own_buf); | |
2282 | return 0; | |
2283 | } | |
2284 | } | |
2285 | ||
95954743 PA |
2286 | /* Kill process. Return 1 if successful, 0 if failure. */ |
2287 | int | |
2288 | handle_v_kill (char *own_buf) | |
2289 | { | |
2290 | int pid; | |
2291 | char *p = &own_buf[6]; | |
0f54c268 PM |
2292 | if (multi_process) |
2293 | pid = strtol (p, NULL, 16); | |
2294 | else | |
2295 | pid = signal_pid; | |
95954743 PA |
2296 | if (pid != 0 && kill_inferior (pid) == 0) |
2297 | { | |
2298 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
a493e3e2 | 2299 | last_status.value.sig = GDB_SIGNAL_KILL; |
95954743 PA |
2300 | last_ptid = pid_to_ptid (pid); |
2301 | discard_queued_stop_replies (pid); | |
2302 | write_ok (own_buf); | |
2303 | return 1; | |
2304 | } | |
2305 | else | |
2306 | { | |
2307 | write_enn (own_buf); | |
2308 | return 0; | |
2309 | } | |
2310 | } | |
2311 | ||
64386c31 DJ |
2312 | /* Handle all of the extended 'v' packets. */ |
2313 | void | |
5b1c542e | 2314 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2315 | { |
db42f210 | 2316 | if (!disable_packet_vCont) |
64386c31 | 2317 | { |
db42f210 PA |
2318 | if (strncmp (own_buf, "vCont;", 6) == 0) |
2319 | { | |
2320 | require_running (own_buf); | |
5b1c542e | 2321 | handle_v_cont (own_buf); |
db42f210 PA |
2322 | return; |
2323 | } | |
64386c31 | 2324 | |
db42f210 PA |
2325 | if (strncmp (own_buf, "vCont?", 6) == 0) |
2326 | { | |
bd99dc85 | 2327 | strcpy (own_buf, "vCont;c;C;s;S;t"); |
c2d6af84 PA |
2328 | if (target_supports_range_stepping ()) |
2329 | { | |
2330 | own_buf = own_buf + strlen (own_buf); | |
2331 | strcpy (own_buf, ";r"); | |
2332 | } | |
db42f210 PA |
2333 | return; |
2334 | } | |
64386c31 DJ |
2335 | } |
2336 | ||
a6b151f1 DJ |
2337 | if (strncmp (own_buf, "vFile:", 6) == 0 |
2338 | && handle_vFile (own_buf, packet_len, new_packet_len)) | |
2339 | return; | |
2340 | ||
2d717e4f DJ |
2341 | if (strncmp (own_buf, "vAttach;", 8) == 0) |
2342 | { | |
901f9912 | 2343 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2344 | { |
fd96d250 PA |
2345 | fprintf (stderr, "Already debugging a process\n"); |
2346 | write_enn (own_buf); | |
2347 | return; | |
2d717e4f | 2348 | } |
5b1c542e | 2349 | handle_v_attach (own_buf); |
2d717e4f DJ |
2350 | return; |
2351 | } | |
2352 | ||
2353 | if (strncmp (own_buf, "vRun;", 5) == 0) | |
2354 | { | |
901f9912 | 2355 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2356 | { |
fd96d250 PA |
2357 | fprintf (stderr, "Already debugging a process\n"); |
2358 | write_enn (own_buf); | |
2359 | return; | |
2d717e4f | 2360 | } |
5b1c542e | 2361 | handle_v_run (own_buf); |
2d717e4f DJ |
2362 | return; |
2363 | } | |
2364 | ||
95954743 PA |
2365 | if (strncmp (own_buf, "vKill;", 6) == 0) |
2366 | { | |
2367 | if (!target_running ()) | |
2368 | { | |
2369 | fprintf (stderr, "No process to kill\n"); | |
2370 | write_enn (own_buf); | |
2371 | return; | |
2372 | } | |
2373 | handle_v_kill (own_buf); | |
2374 | return; | |
2375 | } | |
2376 | ||
14a00470 YQ |
2377 | if (handle_notif_ack (own_buf, packet_len)) |
2378 | return; | |
bd99dc85 | 2379 | |
64386c31 DJ |
2380 | /* Otherwise we didn't know what packet it was. Say we didn't |
2381 | understand it. */ | |
2382 | own_buf[0] = 0; | |
2383 | return; | |
2384 | } | |
2385 | ||
bd99dc85 PA |
2386 | /* Resume inferior and wait for another event. In non-stop mode, |
2387 | don't really wait here, but return immediatelly to the event | |
2388 | loop. */ | |
1fd7cdc2 | 2389 | static void |
5b1c542e | 2390 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
2391 | { |
2392 | struct thread_resume resume_info[2]; | |
2393 | int n = 0; | |
2bd7c093 | 2394 | int valid_cont_thread; |
a20d5e98 DJ |
2395 | |
2396 | set_desired_inferior (0); | |
64386c31 | 2397 | |
95954743 PA |
2398 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
2399 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
2400 | |
2401 | if (step || sig || valid_cont_thread) | |
64386c31 | 2402 | { |
fbd5db48 | 2403 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
2404 | if (step) |
2405 | resume_info[0].kind = resume_step; | |
2406 | else | |
2407 | resume_info[0].kind = resume_continue; | |
64386c31 | 2408 | resume_info[0].sig = sig; |
64386c31 DJ |
2409 | n++; |
2410 | } | |
2bd7c093 PA |
2411 | |
2412 | if (!valid_cont_thread) | |
2413 | { | |
95954743 | 2414 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 2415 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
2416 | resume_info[n].sig = 0; |
2417 | n++; | |
2418 | } | |
64386c31 | 2419 | |
bd99dc85 PA |
2420 | if (!non_stop) |
2421 | enable_async_io (); | |
2422 | ||
2bd7c093 | 2423 | (*the_target->resume) (resume_info, n); |
bd99dc85 PA |
2424 | |
2425 | if (non_stop) | |
2426 | write_ok (own_buf); | |
2427 | else | |
2428 | { | |
95954743 | 2429 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
d20a8ad9 PA |
2430 | |
2431 | if (last_status.kind != TARGET_WAITKIND_EXITED | |
2432 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
2433 | { | |
2434 | current_inferior->last_resume_kind = resume_stop; | |
2435 | current_inferior->last_status = last_status; | |
2436 | } | |
2437 | ||
bd99dc85 PA |
2438 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2439 | disable_async_io (); | |
6bd31874 JB |
2440 | |
2441 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2442 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2443 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 PA |
2444 | } |
2445 | } | |
2446 | ||
2447 | /* Callback for for_each_inferior. Make a new stop reply for each | |
2448 | stopped thread. */ | |
2449 | ||
95954743 PA |
2450 | static int |
2451 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 2452 | { |
8336d594 | 2453 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 2454 | |
8336d594 PA |
2455 | /* For now, assume targets that don't have this callback also don't |
2456 | manage the thread's last_status field. */ | |
2457 | if (the_target->thread_stopped == NULL) | |
95954743 | 2458 | { |
14a00470 YQ |
2459 | struct vstop_notif *new_notif = xmalloc (sizeof (*new_notif)); |
2460 | ||
2461 | new_notif->ptid = entry->id; | |
2462 | new_notif->status = thread->last_status; | |
8336d594 PA |
2463 | /* Pass the last stop reply back to GDB, but don't notify |
2464 | yet. */ | |
14a00470 YQ |
2465 | notif_event_enque (¬if_stop, |
2466 | (struct notif_event *) new_notif); | |
8336d594 PA |
2467 | } |
2468 | else | |
2469 | { | |
2470 | if (thread_stopped (thread)) | |
2471 | { | |
2472 | if (debug_threads) | |
3360c0bf LM |
2473 | { |
2474 | char *status_string | |
2475 | = target_waitstatus_to_string (&thread->last_status); | |
2476 | ||
2477 | fprintf (stderr, | |
2478 | "Reporting thread %s as already stopped with %s\n", | |
2479 | target_pid_to_str (entry->id), | |
2480 | status_string); | |
2481 | ||
2482 | xfree (status_string); | |
2483 | } | |
8336d594 | 2484 | |
d20a8ad9 PA |
2485 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
2486 | ||
8336d594 PA |
2487 | /* Pass the last stop reply back to GDB, but don't notify |
2488 | yet. */ | |
2489 | queue_stop_reply (entry->id, &thread->last_status); | |
2490 | } | |
95954743 PA |
2491 | } |
2492 | ||
2493 | return 0; | |
64386c31 DJ |
2494 | } |
2495 | ||
ce1a5b52 PA |
2496 | /* Set this inferior threads's state as "want-stopped". We won't |
2497 | resume this thread until the client gives us another action for | |
2498 | it. */ | |
8336d594 PA |
2499 | |
2500 | static void | |
2501 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
2502 | { | |
2503 | struct thread_info *thread = (struct thread_info *) entry; | |
2504 | ||
2505 | thread->last_resume_kind = resume_stop; | |
2506 | ||
2507 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
2508 | { | |
ce1a5b52 PA |
2509 | /* Most threads are stopped implicitly (all-stop); tag that with |
2510 | signal 0. */ | |
8336d594 | 2511 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 2512 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
2513 | } |
2514 | } | |
2515 | ||
2516 | /* Set all threads' states as "want-stopped". */ | |
2517 | ||
2518 | static void | |
2519 | gdb_wants_all_threads_stopped (void) | |
2520 | { | |
2521 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
2522 | } | |
2523 | ||
2524 | /* Clear the gdb_detached flag of every process. */ | |
2525 | ||
2526 | static void | |
2527 | gdb_reattached_process (struct inferior_list_entry *entry) | |
2528 | { | |
2529 | struct process_info *process = (struct process_info *) entry; | |
2530 | ||
2531 | process->gdb_detached = 0; | |
2532 | } | |
2533 | ||
5b1c542e PA |
2534 | /* Status handler for the '?' packet. */ |
2535 | ||
2536 | static void | |
2537 | handle_status (char *own_buf) | |
2538 | { | |
8336d594 PA |
2539 | /* GDB is connected, don't forward events to the target anymore. */ |
2540 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
2541 | |
2542 | /* In non-stop mode, we must send a stop reply for each stopped | |
2543 | thread. In all-stop mode, just send one for the first stopped | |
2544 | thread we find. */ | |
2545 | ||
2546 | if (non_stop) | |
2547 | { | |
8336d594 PA |
2548 | discard_queued_stop_replies (-1); |
2549 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); | |
bd99dc85 PA |
2550 | |
2551 | /* The first is sent immediatly. OK is sent if there is no | |
2552 | stopped thread, which is the same handling of the vStopped | |
2553 | packet (by design). */ | |
14a00470 | 2554 | notif_write_event (¬if_stop, own_buf); |
bd99dc85 | 2555 | } |
5b1c542e | 2556 | else |
bd99dc85 | 2557 | { |
7984d532 | 2558 | pause_all (0); |
fa593d66 | 2559 | stabilize_threads (); |
8336d594 PA |
2560 | gdb_wants_all_threads_stopped (); |
2561 | ||
bd99dc85 | 2562 | if (all_threads.head) |
8336d594 PA |
2563 | { |
2564 | struct target_waitstatus status; | |
2565 | ||
2566 | status.kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 2567 | status.value.sig = GDB_SIGNAL_TRAP; |
8336d594 PA |
2568 | prepare_resume_reply (own_buf, |
2569 | all_threads.head->id, &status); | |
2570 | } | |
bd99dc85 PA |
2571 | else |
2572 | strcpy (own_buf, "W00"); | |
2573 | } | |
5b1c542e PA |
2574 | } |
2575 | ||
dd24457d DJ |
2576 | static void |
2577 | gdbserver_version (void) | |
2578 | { | |
c16158bc | 2579 | printf ("GNU gdbserver %s%s\n" |
b9786c74 | 2580 | "Copyright (C) 2013 Free Software Foundation, Inc.\n" |
493e2a69 MS |
2581 | "gdbserver is free software, covered by the " |
2582 | "GNU General Public License.\n" | |
dd24457d | 2583 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 2584 | PKGVERSION, version, host_name); |
dd24457d DJ |
2585 | } |
2586 | ||
0bc68c49 | 2587 | static void |
c16158bc | 2588 | gdbserver_usage (FILE *stream) |
0bc68c49 | 2589 | { |
c16158bc JM |
2590 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
2591 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
2592 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
2593 | "\n" | |
2594 | "COMM may either be a tty device (for serial debugging), or \n" | |
2595 | "HOST:PORT to listen for a TCP connection.\n" | |
2596 | "\n" | |
2597 | "Options:\n" | |
62709adf PA |
2598 | " --debug Enable general debugging output.\n" |
2599 | " --remote-debug Enable remote protocol debugging output.\n" | |
2600 | " --version Display version information and exit.\n" | |
03f2bd59 JK |
2601 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" |
2602 | " --once Exit after the first connection has " | |
2603 | "closed.\n"); | |
c16158bc JM |
2604 | if (REPORT_BUGS_TO[0] && stream == stdout) |
2605 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
2606 | } |
2607 | ||
db42f210 PA |
2608 | static void |
2609 | gdbserver_show_disableable (FILE *stream) | |
2610 | { | |
2611 | fprintf (stream, "Disableable packets:\n" | |
2612 | " vCont \tAll vCont packets\n" | |
2613 | " qC \tQuerying the current thread\n" | |
2614 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
2615 | " Tthread \tPassing the thread specifier in the " |
2616 | "T stop reply packet\n" | |
db42f210 PA |
2617 | " threads \tAll of the above\n"); |
2618 | } | |
2619 | ||
2620 | ||
2d717e4f DJ |
2621 | #undef require_running |
2622 | #define require_running(BUF) \ | |
2623 | if (!target_running ()) \ | |
2624 | { \ | |
2625 | write_enn (BUF); \ | |
2626 | break; \ | |
2627 | } | |
2628 | ||
95954743 PA |
2629 | static int |
2630 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
2631 | { | |
2632 | int pid = * (int *) args; | |
2633 | ||
2634 | if (ptid_get_pid (entry->id) == pid) | |
2635 | return 1; | |
2636 | ||
2637 | return 0; | |
2638 | } | |
2639 | ||
2640 | static void | |
2641 | kill_inferior_callback (struct inferior_list_entry *entry) | |
2642 | { | |
2643 | struct process_info *process = (struct process_info *) entry; | |
2644 | int pid = ptid_get_pid (process->head.id); | |
2645 | ||
2646 | kill_inferior (pid); | |
2647 | discard_queued_stop_replies (pid); | |
2648 | } | |
2649 | ||
9f767825 DE |
2650 | /* Callback for for_each_inferior to detach or kill the inferior, |
2651 | depending on whether we attached to it or not. | |
2652 | We inform the user whether we're detaching or killing the process | |
2653 | as this is only called when gdbserver is about to exit. */ | |
2654 | ||
95954743 PA |
2655 | static void |
2656 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
2657 | { | |
2658 | struct process_info *process = (struct process_info *) entry; | |
2659 | int pid = ptid_get_pid (process->head.id); | |
2660 | ||
2661 | if (process->attached) | |
2662 | detach_inferior (pid); | |
2663 | else | |
2664 | kill_inferior (pid); | |
2665 | ||
2666 | discard_queued_stop_replies (pid); | |
2667 | } | |
2668 | ||
9f767825 DE |
2669 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
2670 | the pids of started inferiors. */ | |
2671 | ||
2672 | static void | |
2673 | print_started_pid (struct inferior_list_entry *entry) | |
2674 | { | |
2675 | struct process_info *process = (struct process_info *) entry; | |
2676 | ||
2677 | if (! process->attached) | |
2678 | { | |
2679 | int pid = ptid_get_pid (process->head.id); | |
2680 | fprintf (stderr, " %d", pid); | |
2681 | } | |
2682 | } | |
2683 | ||
2684 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
2685 | the pids of attached inferiors. */ | |
2686 | ||
2687 | static void | |
2688 | print_attached_pid (struct inferior_list_entry *entry) | |
2689 | { | |
2690 | struct process_info *process = (struct process_info *) entry; | |
2691 | ||
2692 | if (process->attached) | |
2693 | { | |
2694 | int pid = ptid_get_pid (process->head.id); | |
2695 | fprintf (stderr, " %d", pid); | |
2696 | } | |
2697 | } | |
2698 | ||
2699 | /* Call this when exiting gdbserver with possible inferiors that need | |
2700 | to be killed or detached from. */ | |
2701 | ||
2702 | static void | |
2703 | detach_or_kill_for_exit (void) | |
2704 | { | |
2705 | /* First print a list of the inferiors we will be killing/detaching. | |
2706 | This is to assist the user, for example, in case the inferior unexpectedly | |
2707 | dies after we exit: did we screw up or did the inferior exit on its own? | |
2708 | Having this info will save some head-scratching. */ | |
2709 | ||
2710 | if (have_started_inferiors_p ()) | |
2711 | { | |
2712 | fprintf (stderr, "Killing process(es):"); | |
2713 | for_each_inferior (&all_processes, print_started_pid); | |
2714 | fprintf (stderr, "\n"); | |
2715 | } | |
2716 | if (have_attached_inferiors_p ()) | |
2717 | { | |
2718 | fprintf (stderr, "Detaching process(es):"); | |
2719 | for_each_inferior (&all_processes, print_attached_pid); | |
2720 | fprintf (stderr, "\n"); | |
2721 | } | |
2722 | ||
2723 | /* Now we can kill or detach the inferiors. */ | |
2724 | ||
2725 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
2726 | } | |
2727 | ||
c906108c | 2728 | int |
da85418c | 2729 | main (int argc, char *argv[]) |
c906108c | 2730 | { |
0729219d DJ |
2731 | int bad_attach; |
2732 | int pid; | |
2d717e4f DJ |
2733 | char *arg_end, *port; |
2734 | char **next_arg = &argv[1]; | |
89dc0afd JK |
2735 | volatile int multi_mode = 0; |
2736 | volatile int attach = 0; | |
2d717e4f | 2737 | int was_running; |
c906108c | 2738 | |
2d717e4f | 2739 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 2740 | { |
2d717e4f DJ |
2741 | if (strcmp (*next_arg, "--version") == 0) |
2742 | { | |
2743 | gdbserver_version (); | |
2744 | exit (0); | |
2745 | } | |
2746 | else if (strcmp (*next_arg, "--help") == 0) | |
2747 | { | |
c16158bc | 2748 | gdbserver_usage (stdout); |
2d717e4f DJ |
2749 | exit (0); |
2750 | } | |
2751 | else if (strcmp (*next_arg, "--attach") == 0) | |
2752 | attach = 1; | |
2753 | else if (strcmp (*next_arg, "--multi") == 0) | |
2754 | multi_mode = 1; | |
ccd213ac DJ |
2755 | else if (strcmp (*next_arg, "--wrapper") == 0) |
2756 | { | |
2757 | next_arg++; | |
2758 | ||
2759 | wrapper_argv = next_arg; | |
2760 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
2761 | next_arg++; | |
2762 | ||
2763 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
2764 | { | |
c16158bc | 2765 | gdbserver_usage (stderr); |
ccd213ac DJ |
2766 | exit (1); |
2767 | } | |
2768 | ||
2769 | /* Consume the "--". */ | |
2770 | *next_arg = NULL; | |
2771 | } | |
2d717e4f DJ |
2772 | else if (strcmp (*next_arg, "--debug") == 0) |
2773 | debug_threads = 1; | |
62709adf PA |
2774 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
2775 | remote_debug = 1; | |
db42f210 PA |
2776 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
2777 | { | |
2778 | gdbserver_show_disableable (stdout); | |
2779 | exit (0); | |
2780 | } | |
2781 | else if (strncmp (*next_arg, | |
2782 | "--disable-packet=", | |
2783 | sizeof ("--disable-packet=") - 1) == 0) | |
2784 | { | |
2785 | char *packets, *tok; | |
2786 | ||
2787 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
2788 | for (tok = strtok (packets, ","); | |
2789 | tok != NULL; | |
2790 | tok = strtok (NULL, ",")) | |
2791 | { | |
2792 | if (strcmp ("vCont", tok) == 0) | |
2793 | disable_packet_vCont = 1; | |
2794 | else if (strcmp ("Tthread", tok) == 0) | |
2795 | disable_packet_Tthread = 1; | |
2796 | else if (strcmp ("qC", tok) == 0) | |
2797 | disable_packet_qC = 1; | |
2798 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
2799 | disable_packet_qfThreadInfo = 1; | |
2800 | else if (strcmp ("threads", tok) == 0) | |
2801 | { | |
2802 | disable_packet_vCont = 1; | |
2803 | disable_packet_Tthread = 1; | |
2804 | disable_packet_qC = 1; | |
2805 | disable_packet_qfThreadInfo = 1; | |
2806 | } | |
2807 | else | |
2808 | { | |
2809 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
2810 | tok); | |
2811 | gdbserver_show_disableable (stderr); | |
2812 | exit (1); | |
2813 | } | |
2814 | } | |
2815 | } | |
e0f9f062 DE |
2816 | else if (strcmp (*next_arg, "-") == 0) |
2817 | { | |
2818 | /* "-" specifies a stdio connection and is a form of port | |
2819 | specification. */ | |
2820 | *next_arg = STDIO_CONNECTION_NAME; | |
2821 | break; | |
2822 | } | |
03583c20 UW |
2823 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
2824 | disable_randomization = 1; | |
2825 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
2826 | disable_randomization = 0; | |
03f2bd59 JK |
2827 | else if (strcmp (*next_arg, "--once") == 0) |
2828 | run_once = 1; | |
2d717e4f DJ |
2829 | else |
2830 | { | |
2831 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
2832 | exit (1); | |
2833 | } | |
dd24457d | 2834 | |
2d717e4f DJ |
2835 | next_arg++; |
2836 | continue; | |
dd24457d DJ |
2837 | } |
2838 | ||
c5aa993b | 2839 | if (setjmp (toplevel)) |
c906108c | 2840 | { |
c5aa993b JM |
2841 | fprintf (stderr, "Exiting\n"); |
2842 | exit (1); | |
c906108c SS |
2843 | } |
2844 | ||
2d717e4f DJ |
2845 | port = *next_arg; |
2846 | next_arg++; | |
2847 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
2848 | { | |
c16158bc | 2849 | gdbserver_usage (stderr); |
2d717e4f DJ |
2850 | exit (1); |
2851 | } | |
2852 | ||
e0f9f062 DE |
2853 | /* We need to know whether the remote connection is stdio before |
2854 | starting the inferior. Inferiors created in this scenario have | |
2855 | stdin,stdout redirected. So do this here before we call | |
2856 | start_inferior. */ | |
2857 | remote_prepare (port); | |
2858 | ||
0729219d DJ |
2859 | bad_attach = 0; |
2860 | pid = 0; | |
2d717e4f DJ |
2861 | |
2862 | /* --attach used to come after PORT, so allow it there for | |
2863 | compatibility. */ | |
2864 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 2865 | { |
2d717e4f DJ |
2866 | attach = 1; |
2867 | next_arg++; | |
45b7b345 DJ |
2868 | } |
2869 | ||
2d717e4f DJ |
2870 | if (attach |
2871 | && (*next_arg == NULL | |
2872 | || (*next_arg)[0] == '\0' | |
2873 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
2874 | || *arg_end != '\0' | |
2875 | || next_arg[1] != NULL)) | |
2876 | bad_attach = 1; | |
2877 | ||
2878 | if (bad_attach) | |
dd24457d | 2879 | { |
c16158bc | 2880 | gdbserver_usage (stderr); |
dd24457d DJ |
2881 | exit (1); |
2882 | } | |
c906108c | 2883 | |
a20d5e98 | 2884 | initialize_async_io (); |
4ce44c66 | 2885 | initialize_low (); |
60f662b0 | 2886 | initialize_event_loop (); |
219f2f23 PA |
2887 | if (target_supports_tracepoints ()) |
2888 | initialize_tracepoint (); | |
4ce44c66 | 2889 | |
bca929d3 DE |
2890 | own_buf = xmalloc (PBUFSIZ + 1); |
2891 | mem_buf = xmalloc (PBUFSIZ); | |
0a30fbc4 | 2892 | |
2d717e4f | 2893 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 2894 | { |
2d717e4f DJ |
2895 | int i, n; |
2896 | ||
2897 | n = argc - (next_arg - argv); | |
bca929d3 | 2898 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
2d717e4f | 2899 | for (i = 0; i < n; i++) |
bca929d3 | 2900 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
2901 | program_argv[i] = NULL; |
2902 | ||
45b7b345 | 2903 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 2904 | start_inferior (program_argv); |
c906108c | 2905 | |
c588c53c MS |
2906 | /* We are now (hopefully) stopped at the first instruction of |
2907 | the target process. This assumes that the target process was | |
2908 | successfully created. */ | |
45b7b345 | 2909 | } |
2d717e4f DJ |
2910 | else if (pid != 0) |
2911 | { | |
5b1c542e | 2912 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
2913 | error ("Attaching not supported on this target"); |
2914 | ||
2915 | /* Otherwise succeeded. */ | |
2916 | } | |
45b7b345 DJ |
2917 | else |
2918 | { | |
5b1c542e PA |
2919 | last_status.kind = TARGET_WAITKIND_EXITED; |
2920 | last_status.value.integer = 0; | |
95954743 | 2921 | last_ptid = minus_one_ptid; |
45b7b345 | 2922 | } |
c906108c | 2923 | |
14a00470 YQ |
2924 | initialize_notif (); |
2925 | ||
311de423 PA |
2926 | /* Don't report shared library events on the initial connection, |
2927 | even if some libraries are preloaded. Avoids the "stopped by | |
2928 | shared library event" notice on gdb side. */ | |
2929 | dlls_changed = 0; | |
2930 | ||
8264bb58 DJ |
2931 | if (setjmp (toplevel)) |
2932 | { | |
f128d5e9 PA |
2933 | /* If something fails and longjmps while detaching or killing |
2934 | inferiors, we'd end up here again, stuck in an infinite loop | |
2935 | trap. Be sure that if that happens, we exit immediately | |
2936 | instead. */ | |
01b17894 PA |
2937 | if (setjmp (toplevel) == 0) |
2938 | detach_or_kill_for_exit (); | |
2939 | else | |
2940 | fprintf (stderr, "Detach or kill failed. Exiting\n"); | |
8264bb58 DJ |
2941 | exit (1); |
2942 | } | |
2943 | ||
5b1c542e PA |
2944 | if (last_status.kind == TARGET_WAITKIND_EXITED |
2945 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
2946 | was_running = 0; |
2947 | else | |
2948 | was_running = 1; | |
2949 | ||
2950 | if (!was_running && !multi_mode) | |
c588c53c | 2951 | { |
2d717e4f | 2952 | fprintf (stderr, "No program to debug. GDBserver exiting.\n"); |
c588c53c MS |
2953 | exit (1); |
2954 | } | |
2955 | ||
c906108c SS |
2956 | while (1) |
2957 | { | |
a6f3e723 | 2958 | noack_mode = 0; |
95954743 | 2959 | multi_process = 0; |
8336d594 PA |
2960 | /* Be sure we're out of tfind mode. */ |
2961 | current_traceframe = -1; | |
bd99dc85 | 2962 | |
2d717e4f | 2963 | remote_open (port); |
c906108c | 2964 | |
2d717e4f DJ |
2965 | if (setjmp (toplevel) != 0) |
2966 | { | |
2967 | /* An error occurred. */ | |
2968 | if (response_needed) | |
2969 | { | |
2970 | write_enn (own_buf); | |
2971 | putpkt (own_buf); | |
2972 | } | |
2973 | } | |
2974 | ||
bd99dc85 | 2975 | /* Wait for events. This will return when all event sources are |
8336d594 | 2976 | removed from the event loop. */ |
bd99dc85 PA |
2977 | start_event_loop (); |
2978 | ||
2979 | /* If an exit was requested (using the "monitor exit" command), | |
2980 | terminate now. The only other way to get here is for | |
2981 | getpkt to fail; close the connection and reopen it at the | |
2982 | top of the loop. */ | |
2983 | ||
03f2bd59 | 2984 | if (exit_requested || run_once) |
c906108c | 2985 | { |
01b17894 PA |
2986 | /* If something fails and longjmps while detaching or |
2987 | killing inferiors, we'd end up here again, stuck in an | |
2988 | infinite loop trap. Be sure that if that happens, we | |
2989 | exit immediately instead. */ | |
2990 | if (setjmp (toplevel) == 0) | |
2991 | { | |
2992 | detach_or_kill_for_exit (); | |
2993 | exit (0); | |
2994 | } | |
2995 | else | |
2996 | { | |
2997 | fprintf (stderr, "Detach or kill failed. Exiting\n"); | |
2998 | exit (1); | |
2999 | } | |
bd99dc85 | 3000 | } |
8336d594 PA |
3001 | |
3002 | fprintf (stderr, | |
3003 | "Remote side has terminated connection. " | |
3004 | "GDBserver will reopen the connection.\n"); | |
3005 | ||
3006 | if (tracing) | |
3007 | { | |
3008 | if (disconnected_tracing) | |
3009 | { | |
3010 | /* Try to enable non-stop/async mode, so we we can both | |
3011 | wait for an async socket accept, and handle async | |
3012 | target events simultaneously. There's also no point | |
3013 | either in having the target always stop all threads, | |
3014 | when we're going to pass signals down without | |
3015 | informing GDB. */ | |
3016 | if (!non_stop) | |
3017 | { | |
3018 | if (start_non_stop (1)) | |
3019 | non_stop = 1; | |
3020 | ||
3021 | /* Detaching implicitly resumes all threads; simply | |
3022 | disconnecting does not. */ | |
3023 | } | |
3024 | } | |
3025 | else | |
3026 | { | |
3027 | fprintf (stderr, | |
3028 | "Disconnected tracing disabled; stopping trace run.\n"); | |
3029 | stop_tracing (); | |
3030 | } | |
3031 | } | |
bd99dc85 PA |
3032 | } |
3033 | } | |
01f9e8fa | 3034 | |
9f3a5c85 LM |
3035 | /* Process options coming from Z packets for *point at address |
3036 | POINT_ADDR. PACKET is the packet buffer. *PACKET is updated | |
3037 | to point to the first char after the last processed option. */ | |
3038 | ||
3039 | static void | |
3040 | process_point_options (CORE_ADDR point_addr, char **packet) | |
3041 | { | |
3042 | char *dataptr = *packet; | |
d3ce09f5 | 3043 | int persist; |
9f3a5c85 LM |
3044 | |
3045 | /* Check if data has the correct format. */ | |
3046 | if (*dataptr != ';') | |
3047 | return; | |
3048 | ||
3049 | dataptr++; | |
3050 | ||
3051 | while (*dataptr) | |
3052 | { | |
d3ce09f5 SS |
3053 | if (*dataptr == ';') |
3054 | ++dataptr; | |
3055 | ||
3056 | if (*dataptr == 'X') | |
9f3a5c85 | 3057 | { |
d3ce09f5 | 3058 | /* Conditional expression. */ |
d171ca78 YQ |
3059 | if (debug_threads) |
3060 | fprintf (stderr, "Found breakpoint condition.\n"); | |
d3ce09f5 SS |
3061 | add_breakpoint_condition (point_addr, &dataptr); |
3062 | } | |
3063 | else if (strncmp (dataptr, "cmds:", strlen ("cmds:")) == 0) | |
3064 | { | |
3065 | dataptr += strlen ("cmds:"); | |
3066 | if (debug_threads) | |
3067 | fprintf (stderr, "Found breakpoint commands %s.\n", dataptr); | |
3068 | persist = (*dataptr == '1'); | |
3069 | dataptr += 2; | |
3070 | add_breakpoint_commands (point_addr, &dataptr, persist); | |
3071 | } | |
3072 | else | |
3073 | { | |
d3ce09f5 SS |
3074 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
3075 | *dataptr); | |
78a99e91 PA |
3076 | /* Skip tokens until we find one that we recognize. */ |
3077 | while (*dataptr && *dataptr != ';') | |
3078 | dataptr++; | |
9f3a5c85 | 3079 | } |
9f3a5c85 LM |
3080 | } |
3081 | *packet = dataptr; | |
3082 | } | |
3083 | ||
bd99dc85 PA |
3084 | /* Event loop callback that handles a serial event. The first byte in |
3085 | the serial buffer gets us here. We expect characters to arrive at | |
3086 | a brisk pace, so we read the rest of the packet with a blocking | |
3087 | getpkt call. */ | |
01f9e8fa | 3088 | |
8336d594 | 3089 | static int |
bd99dc85 PA |
3090 | process_serial_event (void) |
3091 | { | |
3092 | char ch; | |
3093 | int i = 0; | |
3094 | int signal; | |
3095 | unsigned int len; | |
764880b7 | 3096 | int res; |
bd99dc85 | 3097 | CORE_ADDR mem_addr; |
95954743 | 3098 | int pid; |
bd99dc85 PA |
3099 | unsigned char sig; |
3100 | int packet_len; | |
3101 | int new_packet_len = -1; | |
3102 | ||
3103 | /* Used to decide when gdbserver should exit in | |
3104 | multi-mode/remote. */ | |
3105 | static int have_ran = 0; | |
3106 | ||
3107 | if (!have_ran) | |
3108 | have_ran = target_running (); | |
3109 | ||
3110 | disable_async_io (); | |
3111 | ||
3112 | response_needed = 0; | |
3113 | packet_len = getpkt (own_buf); | |
3114 | if (packet_len <= 0) | |
3115 | { | |
bd99dc85 | 3116 | remote_close (); |
8336d594 PA |
3117 | /* Force an event loop break. */ |
3118 | return -1; | |
bd99dc85 PA |
3119 | } |
3120 | response_needed = 1; | |
3121 | ||
3122 | i = 0; | |
3123 | ch = own_buf[i++]; | |
3124 | switch (ch) | |
3125 | { | |
3126 | case 'q': | |
3127 | handle_query (own_buf, packet_len, &new_packet_len); | |
3128 | break; | |
3129 | case 'Q': | |
3130 | handle_general_set (own_buf); | |
3131 | break; | |
3132 | case 'D': | |
3133 | require_running (own_buf); | |
95954743 PA |
3134 | |
3135 | if (multi_process) | |
3136 | { | |
3137 | i++; /* skip ';' */ | |
3138 | pid = strtol (&own_buf[i], NULL, 16); | |
3139 | } | |
3140 | else | |
fbd5db48 | 3141 | pid = ptid_get_pid (current_ptid); |
95954743 | 3142 | |
d3ce09f5 | 3143 | if ((tracing && disconnected_tracing) || any_persistent_commands ()) |
8336d594 PA |
3144 | { |
3145 | struct thread_resume resume_info; | |
3146 | struct process_info *process = find_process_pid (pid); | |
3147 | ||
3148 | if (process == NULL) | |
3149 | { | |
3150 | write_enn (own_buf); | |
3151 | break; | |
3152 | } | |
3153 | ||
d3ce09f5 SS |
3154 | if (tracing && disconnected_tracing) |
3155 | fprintf (stderr, | |
3156 | "Disconnected tracing in effect, " | |
3157 | "leaving gdbserver attached to the process\n"); | |
3158 | ||
3159 | if (any_persistent_commands ()) | |
3160 | fprintf (stderr, | |
3161 | "Persistent commands are present, " | |
3162 | "leaving gdbserver attached to the process\n"); | |
8336d594 PA |
3163 | |
3164 | /* Make sure we're in non-stop/async mode, so we we can both | |
3165 | wait for an async socket accept, and handle async target | |
3166 | events simultaneously. There's also no point either in | |
3167 | having the target stop all threads, when we're going to | |
3168 | pass signals down without informing GDB. */ | |
3169 | if (!non_stop) | |
3170 | { | |
3171 | if (debug_threads) | |
3172 | fprintf (stderr, "Forcing non-stop mode\n"); | |
3173 | ||
3174 | non_stop = 1; | |
3175 | start_non_stop (1); | |
3176 | } | |
3177 | ||
3178 | process->gdb_detached = 1; | |
3179 | ||
3180 | /* Detaching implicitly resumes all threads. */ | |
3181 | resume_info.thread = minus_one_ptid; | |
3182 | resume_info.kind = resume_continue; | |
3183 | resume_info.sig = 0; | |
3184 | (*the_target->resume) (&resume_info, 1); | |
3185 | ||
3186 | write_ok (own_buf); | |
3187 | break; /* from switch/case */ | |
3188 | } | |
3189 | ||
95954743 | 3190 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 3191 | stop_tracing (); |
95954743 | 3192 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
3193 | write_enn (own_buf); |
3194 | else | |
3195 | { | |
95954743 | 3196 | discard_queued_stop_replies (pid); |
bd99dc85 PA |
3197 | write_ok (own_buf); |
3198 | ||
3199 | if (extended_protocol) | |
c906108c | 3200 | { |
bd99dc85 PA |
3201 | /* Treat this like a normal program exit. */ |
3202 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3203 | last_status.value.integer = 0; | |
95954743 | 3204 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 3205 | |
bd99dc85 PA |
3206 | current_inferior = NULL; |
3207 | } | |
3208 | else | |
3209 | { | |
3210 | putpkt (own_buf); | |
3211 | remote_close (); | |
3212 | ||
3213 | /* If we are attached, then we can exit. Otherwise, we | |
3214 | need to hang around doing nothing, until the child is | |
3215 | gone. */ | |
71f55dd8 | 3216 | join_inferior (pid); |
bd99dc85 PA |
3217 | exit (0); |
3218 | } | |
3219 | } | |
3220 | break; | |
3221 | case '!': | |
3222 | extended_protocol = 1; | |
3223 | write_ok (own_buf); | |
3224 | break; | |
3225 | case '?': | |
3226 | handle_status (own_buf); | |
3227 | break; | |
3228 | case 'H': | |
3229 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
3230 | { | |
95954743 PA |
3231 | ptid_t gdb_id, thread_id; |
3232 | int pid; | |
bd99dc85 PA |
3233 | |
3234 | require_running (own_buf); | |
95954743 PA |
3235 | |
3236 | gdb_id = read_ptid (&own_buf[2], NULL); | |
3237 | ||
3238 | pid = ptid_get_pid (gdb_id); | |
3239 | ||
3240 | if (ptid_equal (gdb_id, null_ptid) | |
3241 | || ptid_equal (gdb_id, minus_one_ptid)) | |
3242 | thread_id = null_ptid; | |
3243 | else if (pid != 0 | |
3244 | && ptid_equal (pid_to_ptid (pid), | |
3245 | gdb_id)) | |
3246 | { | |
3247 | struct thread_info *thread = | |
3248 | (struct thread_info *) find_inferior (&all_threads, | |
3249 | first_thread_of, | |
3250 | &pid); | |
3251 | if (!thread) | |
3252 | { | |
3253 | write_enn (own_buf); | |
3254 | break; | |
3255 | } | |
3256 | ||
3257 | thread_id = ((struct inferior_list_entry *)thread)->id; | |
3258 | } | |
bd99dc85 PA |
3259 | else |
3260 | { | |
3261 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 3262 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3263 | { |
a06660f7 | 3264 | write_enn (own_buf); |
c906108c SS |
3265 | break; |
3266 | } | |
c906108c SS |
3267 | } |
3268 | ||
bd99dc85 | 3269 | if (own_buf[1] == 'g') |
c906108c | 3270 | { |
95954743 | 3271 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3272 | { |
bd99dc85 PA |
3273 | /* GDB is telling us to choose any thread. Check if |
3274 | the currently selected thread is still valid. If | |
3275 | it is not, select the first available. */ | |
3276 | struct thread_info *thread = | |
3277 | (struct thread_info *) find_inferior_id (&all_threads, | |
3278 | general_thread); | |
3279 | if (thread == NULL) | |
3280 | thread_id = all_threads.head->id; | |
c906108c | 3281 | } |
bd99dc85 PA |
3282 | |
3283 | general_thread = thread_id; | |
3284 | set_desired_inferior (1); | |
c906108c | 3285 | } |
bd99dc85 PA |
3286 | else if (own_buf[1] == 'c') |
3287 | cont_thread = thread_id; | |
c906108c | 3288 | |
bd99dc85 PA |
3289 | write_ok (own_buf); |
3290 | } | |
3291 | else | |
3292 | { | |
3293 | /* Silently ignore it so that gdb can extend the protocol | |
3294 | without compatibility headaches. */ | |
3295 | own_buf[0] = '\0'; | |
2d717e4f | 3296 | } |
bd99dc85 PA |
3297 | break; |
3298 | case 'g': | |
219f2f23 PA |
3299 | require_running (own_buf); |
3300 | if (current_traceframe >= 0) | |
3301 | { | |
3aee8918 PA |
3302 | struct regcache *regcache |
3303 | = new_register_cache (current_target_desc ()); | |
219f2f23 PA |
3304 | |
3305 | if (fetch_traceframe_registers (current_traceframe, | |
3306 | regcache, -1) == 0) | |
3307 | registers_to_string (regcache, own_buf); | |
3308 | else | |
3309 | write_enn (own_buf); | |
3310 | free_register_cache (regcache); | |
3311 | } | |
3312 | else | |
3313 | { | |
3314 | struct regcache *regcache; | |
3315 | ||
3316 | set_desired_inferior (1); | |
3317 | regcache = get_thread_regcache (current_inferior, 1); | |
3318 | registers_to_string (regcache, own_buf); | |
3319 | } | |
bd99dc85 PA |
3320 | break; |
3321 | case 'G': | |
219f2f23 PA |
3322 | require_running (own_buf); |
3323 | if (current_traceframe >= 0) | |
3324 | write_enn (own_buf); | |
3325 | else | |
3326 | { | |
442ea881 PA |
3327 | struct regcache *regcache; |
3328 | ||
442ea881 PA |
3329 | set_desired_inferior (1); |
3330 | regcache = get_thread_regcache (current_inferior, 1); | |
3331 | registers_from_string (regcache, &own_buf[1]); | |
3332 | write_ok (own_buf); | |
3333 | } | |
bd99dc85 PA |
3334 | break; |
3335 | case 'm': | |
3336 | require_running (own_buf); | |
3337 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
764880b7 PA |
3338 | res = gdb_read_memory (mem_addr, mem_buf, len); |
3339 | if (res < 0) | |
bd99dc85 | 3340 | write_enn (own_buf); |
764880b7 PA |
3341 | else |
3342 | convert_int_to_ascii (mem_buf, own_buf, res); | |
bd99dc85 PA |
3343 | break; |
3344 | case 'M': | |
3345 | require_running (own_buf); | |
fa593d66 | 3346 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 3347 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
3348 | write_ok (own_buf); |
3349 | else | |
3350 | write_enn (own_buf); | |
3351 | break; | |
3352 | case 'X': | |
3353 | require_running (own_buf); | |
3354 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 3355 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 3356 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
3357 | write_enn (own_buf); |
3358 | else | |
3359 | write_ok (own_buf); | |
3360 | break; | |
3361 | case 'C': | |
3362 | require_running (own_buf); | |
3363 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
2ea28649 PA |
3364 | if (gdb_signal_to_host_p (sig)) |
3365 | signal = gdb_signal_to_host (sig); | |
bd99dc85 PA |
3366 | else |
3367 | signal = 0; | |
3368 | myresume (own_buf, 0, signal); | |
3369 | break; | |
3370 | case 'S': | |
3371 | require_running (own_buf); | |
3372 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
2ea28649 PA |
3373 | if (gdb_signal_to_host_p (sig)) |
3374 | signal = gdb_signal_to_host (sig); | |
bd99dc85 PA |
3375 | else |
3376 | signal = 0; | |
3377 | myresume (own_buf, 1, signal); | |
3378 | break; | |
3379 | case 'c': | |
3380 | require_running (own_buf); | |
3381 | signal = 0; | |
3382 | myresume (own_buf, 0, signal); | |
3383 | break; | |
3384 | case 's': | |
3385 | require_running (own_buf); | |
3386 | signal = 0; | |
3387 | myresume (own_buf, 1, signal); | |
3388 | break; | |
c6314022 AR |
3389 | case 'Z': /* insert_ ... */ |
3390 | /* Fallthrough. */ | |
3391 | case 'z': /* remove_ ... */ | |
bd99dc85 | 3392 | { |
bd99dc85 | 3393 | char *dataptr; |
aca22551 PA |
3394 | ULONGEST addr; |
3395 | int len; | |
bd99dc85 | 3396 | char type = own_buf[1]; |
c6314022 | 3397 | int res; |
d993e290 | 3398 | const int insert = ch == 'Z'; |
aca22551 PA |
3399 | char *p = &own_buf[3]; |
3400 | ||
3401 | p = unpack_varlen_hex (p, &addr); | |
3402 | len = strtol (p + 1, &dataptr, 16); | |
c6314022 | 3403 | |
d993e290 PA |
3404 | /* Default to unrecognized/unsupported. */ |
3405 | res = 1; | |
3406 | switch (type) | |
3407 | { | |
3408 | case '0': /* software-breakpoint */ | |
3409 | case '1': /* hardware-breakpoint */ | |
3410 | case '2': /* write watchpoint */ | |
3411 | case '3': /* read watchpoint */ | |
3412 | case '4': /* access watchpoint */ | |
3413 | require_running (own_buf); | |
3414 | if (insert && the_target->insert_point != NULL) | |
9f3a5c85 LM |
3415 | { |
3416 | /* Insert the breakpoint. If it is already inserted, nothing | |
3417 | will take place. */ | |
3418 | res = (*the_target->insert_point) (type, addr, len); | |
3419 | ||
3420 | /* GDB may have sent us a list of *point parameters to be | |
3421 | evaluated on the target's side. Read such list here. If we | |
3422 | already have a list of parameters, GDB is telling us to drop | |
3423 | that list and use this one instead. */ | |
3424 | if (!res && (type == '0' || type == '1')) | |
3425 | { | |
3426 | /* Remove previous conditions. */ | |
3427 | clear_gdb_breakpoint_conditions (addr); | |
3428 | process_point_options (addr, &dataptr); | |
3429 | } | |
3430 | } | |
d993e290 PA |
3431 | else if (!insert && the_target->remove_point != NULL) |
3432 | res = (*the_target->remove_point) (type, addr, len); | |
3433 | break; | |
3434 | default: | |
3435 | break; | |
3436 | } | |
bd99dc85 | 3437 | |
c6314022 AR |
3438 | if (res == 0) |
3439 | write_ok (own_buf); | |
3440 | else if (res == 1) | |
3441 | /* Unsupported. */ | |
3442 | own_buf[0] = '\0'; | |
bd99dc85 | 3443 | else |
c6314022 | 3444 | write_enn (own_buf); |
bd99dc85 PA |
3445 | break; |
3446 | } | |
3447 | case 'k': | |
3448 | response_needed = 0; | |
3449 | if (!target_running ()) | |
95954743 PA |
3450 | /* The packet we received doesn't make sense - but we can't |
3451 | reply to it, either. */ | |
8336d594 | 3452 | return 0; |
c906108c | 3453 | |
95954743 PA |
3454 | fprintf (stderr, "Killing all inferiors\n"); |
3455 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 3456 | |
bd99dc85 PA |
3457 | /* When using the extended protocol, we wait with no program |
3458 | running. The traditional protocol will exit instead. */ | |
3459 | if (extended_protocol) | |
3460 | { | |
3461 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 3462 | last_status.value.sig = GDB_SIGNAL_KILL; |
8336d594 | 3463 | return 0; |
bd99dc85 PA |
3464 | } |
3465 | else | |
8336d594 PA |
3466 | exit (0); |
3467 | ||
bd99dc85 PA |
3468 | case 'T': |
3469 | { | |
95954743 | 3470 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
3471 | |
3472 | require_running (own_buf); | |
95954743 PA |
3473 | |
3474 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 3475 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 3476 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
3477 | { |
3478 | write_enn (own_buf); | |
3479 | break; | |
3480 | } | |
3481 | ||
3482 | if (mythread_alive (thread_id)) | |
3483 | write_ok (own_buf); | |
3484 | else | |
3485 | write_enn (own_buf); | |
3486 | } | |
3487 | break; | |
3488 | case 'R': | |
3489 | response_needed = 0; | |
3490 | ||
3491 | /* Restarting the inferior is only supported in the extended | |
3492 | protocol. */ | |
3493 | if (extended_protocol) | |
3494 | { | |
3495 | if (target_running ()) | |
95954743 PA |
3496 | for_each_inferior (&all_processes, |
3497 | kill_inferior_callback); | |
bd99dc85 PA |
3498 | fprintf (stderr, "GDBserver restarting\n"); |
3499 | ||
3500 | /* Wait till we are at 1st instruction in prog. */ | |
3501 | if (program_argv != NULL) | |
3502 | start_inferior (program_argv); | |
3503 | else | |
3504 | { | |
3505 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 3506 | last_status.value.sig = GDB_SIGNAL_KILL; |
bd99dc85 | 3507 | } |
8336d594 | 3508 | return 0; |
c906108c SS |
3509 | } |
3510 | else | |
3511 | { | |
bd99dc85 PA |
3512 | /* It is a request we don't understand. Respond with an |
3513 | empty packet so that gdb knows that we don't support this | |
3514 | request. */ | |
3515 | own_buf[0] = '\0'; | |
3516 | break; | |
3517 | } | |
3518 | case 'v': | |
3519 | /* Extended (long) request. */ | |
3520 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
3521 | break; | |
3522 | ||
3523 | default: | |
3524 | /* It is a request we don't understand. Respond with an empty | |
3525 | packet so that gdb knows that we don't support this | |
3526 | request. */ | |
3527 | own_buf[0] = '\0'; | |
3528 | break; | |
3529 | } | |
3530 | ||
3531 | if (new_packet_len != -1) | |
3532 | putpkt_binary (own_buf, new_packet_len); | |
3533 | else | |
3534 | putpkt (own_buf); | |
3535 | ||
3536 | response_needed = 0; | |
3537 | ||
3538 | if (!extended_protocol && have_ran && !target_running ()) | |
3539 | { | |
3540 | /* In non-stop, defer exiting until GDB had a chance to query | |
3541 | the whole vStopped list (until it gets an OK). */ | |
14a00470 | 3542 | if (QUEUE_is_empty (notif_event_p, notif_stop.queue)) |
bd99dc85 PA |
3543 | { |
3544 | fprintf (stderr, "GDBserver exiting\n"); | |
c906108c | 3545 | remote_close (); |
bd99dc85 | 3546 | exit (0); |
c906108c SS |
3547 | } |
3548 | } | |
8336d594 PA |
3549 | |
3550 | if (exit_requested) | |
3551 | return -1; | |
3552 | ||
3553 | return 0; | |
c906108c | 3554 | } |
bd99dc85 PA |
3555 | |
3556 | /* Event-loop callback for serial events. */ | |
3557 | ||
8336d594 | 3558 | int |
bd99dc85 PA |
3559 | handle_serial_event (int err, gdb_client_data client_data) |
3560 | { | |
3561 | if (debug_threads) | |
3562 | fprintf (stderr, "handling possible serial event\n"); | |
3563 | ||
3564 | /* Really handle it. */ | |
8336d594 PA |
3565 | if (process_serial_event () < 0) |
3566 | return -1; | |
bd99dc85 PA |
3567 | |
3568 | /* Be sure to not change the selected inferior behind GDB's back. | |
3569 | Important in the non-stop mode asynchronous protocol. */ | |
3570 | set_desired_inferior (1); | |
8336d594 PA |
3571 | |
3572 | return 0; | |
bd99dc85 PA |
3573 | } |
3574 | ||
3575 | /* Event-loop callback for target events. */ | |
3576 | ||
8336d594 | 3577 | int |
bd99dc85 PA |
3578 | handle_target_event (int err, gdb_client_data client_data) |
3579 | { | |
3580 | if (debug_threads) | |
3581 | fprintf (stderr, "handling possible target event\n"); | |
3582 | ||
95954743 PA |
3583 | last_ptid = mywait (minus_one_ptid, &last_status, |
3584 | TARGET_WNOHANG, 1); | |
bd99dc85 PA |
3585 | |
3586 | if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
3587 | { | |
8336d594 PA |
3588 | int pid = ptid_get_pid (last_ptid); |
3589 | struct process_info *process = find_process_pid (pid); | |
3590 | int forward_event = !gdb_connected () || process->gdb_detached; | |
3591 | ||
3592 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
3593 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
3594 | { |
3595 | mark_breakpoints_out (process); | |
3596 | mourn_inferior (process); | |
3597 | } | |
ce1a5b52 | 3598 | else |
d20a8ad9 PA |
3599 | { |
3600 | /* We're reporting this thread as stopped. Update its | |
3601 | "want-stopped" state to what the client wants, until it | |
3602 | gets a new resume action. */ | |
3603 | current_inferior->last_resume_kind = resume_stop; | |
3604 | current_inferior->last_status = last_status; | |
3605 | } | |
8336d594 PA |
3606 | |
3607 | if (forward_event) | |
3608 | { | |
3609 | if (!target_running ()) | |
3610 | { | |
3611 | /* The last process exited. We're done. */ | |
3612 | exit (0); | |
3613 | } | |
3614 | ||
3615 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
3616 | { | |
3617 | /* A thread stopped with a signal, but gdb isn't | |
3618 | connected to handle it. Pass it down to the | |
3619 | inferior, as if it wasn't being traced. */ | |
3620 | struct thread_resume resume_info; | |
3621 | ||
3622 | if (debug_threads) | |
3623 | fprintf (stderr, | |
3624 | "GDB not connected; forwarding event %d for [%s]\n", | |
3625 | (int) last_status.kind, | |
3626 | target_pid_to_str (last_ptid)); | |
3627 | ||
3628 | resume_info.thread = last_ptid; | |
3629 | resume_info.kind = resume_continue; | |
2ea28649 | 3630 | resume_info.sig = gdb_signal_to_host (last_status.value.sig); |
8336d594 PA |
3631 | (*the_target->resume) (&resume_info, 1); |
3632 | } | |
3633 | else if (debug_threads) | |
3634 | fprintf (stderr, "GDB not connected; ignoring event %d for [%s]\n", | |
3635 | (int) last_status.kind, | |
3636 | target_pid_to_str (last_ptid)); | |
3637 | } | |
3638 | else | |
3639 | { | |
14a00470 YQ |
3640 | struct vstop_notif *vstop_notif |
3641 | = xmalloc (sizeof (struct vstop_notif)); | |
3642 | ||
3643 | vstop_notif->status = last_status; | |
3644 | vstop_notif->ptid = last_ptid; | |
3645 | /* Push Stop notification. */ | |
3646 | notif_push (¬if_stop, | |
3647 | (struct notif_event *) vstop_notif); | |
8336d594 | 3648 | } |
bd99dc85 PA |
3649 | } |
3650 | ||
3651 | /* Be sure to not change the selected inferior behind GDB's back. | |
3652 | Important in the non-stop mode asynchronous protocol. */ | |
3653 | set_desired_inferior (1); | |
8336d594 PA |
3654 | |
3655 | return 0; | |
bd99dc85 | 3656 | } |