Commit | Line | Data |
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c906108c | 1 | /* Main code for remote server for GDB. |
ecd75fc8 | 2 | Copyright (C) 1989-2014 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "server.h" | |
623b6bdf | 20 | #include "gdbthread.h" |
d1feda86 | 21 | #include "agent.h" |
14a00470 | 22 | #include "notif.h" |
3aee8918 | 23 | #include "tdesc.h" |
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" |
602e3198 | 31 | #include "filestuff.h" |
c144c7a0 | 32 | #include "tracepoint.h" |
799cdc37 | 33 | #include "dll.h" |
533b0600 | 34 | #include "hostio.h" |
a9fa9f7d | 35 | |
122f36ef PA |
36 | /* The thread set with an `Hc' packet. `Hc' is deprecated in favor of |
37 | `vCont'. Note the multi-process extensions made `vCont' a | |
38 | requirement, so `Hc pPID.TID' is pretty much undefined. So | |
39 | CONT_THREAD can be null_ptid for no `Hc' thread, minus_one_ptid for | |
40 | resuming all threads of the process (again, `Hc' isn't used for | |
41 | multi-process), or a specific thread ptid_t. | |
42 | ||
43 | We also set this when handling a single-thread `vCont' resume, as | |
44 | some places in the backends check it to know when (and for which | |
45 | thread) single-thread scheduler-locking is in effect. */ | |
95954743 | 46 | ptid_t cont_thread; |
122f36ef PA |
47 | |
48 | /* The thread set with an `Hg' packet. */ | |
95954743 | 49 | ptid_t general_thread; |
5b1c542e | 50 | |
0d62e5e8 DJ |
51 | int server_waiting; |
52 | ||
2d717e4f | 53 | static int extended_protocol; |
2d717e4f DJ |
54 | static int response_needed; |
55 | static int exit_requested; | |
56 | ||
03f2bd59 JK |
57 | /* --once: Exit after the first connection has closed. */ |
58 | int run_once; | |
59 | ||
95954743 | 60 | int multi_process; |
bd99dc85 PA |
61 | int non_stop; |
62 | ||
03583c20 UW |
63 | /* Whether we should attempt to disable the operating system's address |
64 | space randomization feature before starting an inferior. */ | |
65 | int disable_randomization = 1; | |
66 | ||
ccd213ac | 67 | static char **program_argv, **wrapper_argv; |
2d717e4f | 68 | |
c74d0ad8 DJ |
69 | /* Enable miscellaneous debugging output. The name is historical - it |
70 | was originally used to debug LinuxThreads support. */ | |
71 | int debug_threads; | |
72 | ||
aa5ca48f DE |
73 | /* Enable debugging of h/w breakpoint/watchpoint support. */ |
74 | int debug_hw_points; | |
75 | ||
a493e3e2 PA |
76 | int pass_signals[GDB_SIGNAL_LAST]; |
77 | int program_signals[GDB_SIGNAL_LAST]; | |
9b224c5e | 78 | int program_signals_p; |
89be2091 | 79 | |
c906108c | 80 | jmp_buf toplevel; |
c906108c | 81 | |
a9fa9f7d DJ |
82 | /* The PID of the originally created or attached inferior. Used to |
83 | send signals to the process when GDB sends us an asynchronous interrupt | |
84 | (user hitting Control-C in the client), and to wait for the child to exit | |
85 | when no longer debugging it. */ | |
86 | ||
a1928bad | 87 | unsigned long signal_pid; |
a9fa9f7d | 88 | |
290fadea RS |
89 | #ifdef SIGTTOU |
90 | /* A file descriptor for the controlling terminal. */ | |
91 | int terminal_fd; | |
92 | ||
93 | /* TERMINAL_FD's original foreground group. */ | |
94 | pid_t old_foreground_pgrp; | |
95 | ||
96 | /* Hand back terminal ownership to the original foreground group. */ | |
97 | ||
98 | static void | |
99 | restore_old_foreground_pgrp (void) | |
100 | { | |
101 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
102 | } | |
103 | #endif | |
104 | ||
ec56be1b PA |
105 | /* Set if you want to disable optional thread related packets support |
106 | in gdbserver, for the sake of testing GDB against stubs that don't | |
107 | support them. */ | |
108 | int disable_packet_vCont; | |
109 | int disable_packet_Tthread; | |
110 | int disable_packet_qC; | |
111 | int disable_packet_qfThreadInfo; | |
112 | ||
5b1c542e PA |
113 | /* Last status reported to GDB. */ |
114 | static struct target_waitstatus last_status; | |
95954743 | 115 | static ptid_t last_ptid; |
5b1c542e | 116 | |
bd99dc85 PA |
117 | static char *own_buf; |
118 | static unsigned char *mem_buf; | |
119 | ||
14a00470 YQ |
120 | /* A sub-class of 'struct notif_event' for stop, holding information |
121 | relative to a single stop reply. We keep a queue of these to | |
122 | push to GDB in non-stop mode. */ | |
123 | ||
bd99dc85 PA |
124 | struct vstop_notif |
125 | { | |
14a00470 | 126 | struct notif_event base; |
bd99dc85 PA |
127 | |
128 | /* Thread or process that got the event. */ | |
95954743 | 129 | ptid_t ptid; |
bd99dc85 PA |
130 | |
131 | /* Event info. */ | |
132 | struct target_waitstatus status; | |
133 | }; | |
134 | ||
14a00470 | 135 | DEFINE_QUEUE_P (notif_event_p); |
bd99dc85 PA |
136 | |
137 | /* Put a stop reply to the stop reply queue. */ | |
138 | ||
139 | static void | |
95954743 | 140 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 141 | { |
14a00470 | 142 | struct vstop_notif *new_notif = xmalloc (sizeof (*new_notif)); |
bd99dc85 | 143 | |
bd99dc85 PA |
144 | new_notif->ptid = ptid; |
145 | new_notif->status = *status; | |
146 | ||
14a00470 | 147 | notif_event_enque (¬if_stop, (struct notif_event *) new_notif); |
bd99dc85 PA |
148 | } |
149 | ||
14a00470 YQ |
150 | static int |
151 | remove_all_on_match_pid (QUEUE (notif_event_p) *q, | |
152 | QUEUE_ITER (notif_event_p) *iter, | |
153 | struct notif_event *event, | |
154 | void *data) | |
bd99dc85 | 155 | { |
14a00470 | 156 | int *pid = data; |
d20a8ad9 | 157 | |
14a00470 YQ |
158 | if (*pid == -1 |
159 | || ptid_get_pid (((struct vstop_notif *) event)->ptid) == *pid) | |
bd99dc85 | 160 | { |
14a00470 YQ |
161 | if (q->free_func != NULL) |
162 | q->free_func (event); | |
163 | ||
164 | QUEUE_remove_elem (notif_event_p, q, iter); | |
bd99dc85 | 165 | } |
14a00470 YQ |
166 | |
167 | return 1; | |
bd99dc85 PA |
168 | } |
169 | ||
95954743 PA |
170 | /* Get rid of the currently pending stop replies for PID. If PID is |
171 | -1, then apply to all processes. */ | |
bd99dc85 PA |
172 | |
173 | static void | |
95954743 | 174 | discard_queued_stop_replies (int pid) |
bd99dc85 | 175 | { |
14a00470 YQ |
176 | QUEUE_iterate (notif_event_p, notif_stop.queue, |
177 | remove_all_on_match_pid, &pid); | |
bd99dc85 PA |
178 | } |
179 | ||
bd99dc85 | 180 | static void |
14a00470 | 181 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 182 | { |
14a00470 YQ |
183 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
184 | ||
185 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
186 | } |
187 | ||
14a00470 YQ |
188 | struct notif_server notif_stop = |
189 | { | |
190 | "vStopped", "Stop", NULL, vstop_notif_reply, | |
191 | }; | |
192 | ||
2d717e4f DJ |
193 | static int |
194 | target_running (void) | |
195 | { | |
196 | return all_threads.head != NULL; | |
197 | } | |
198 | ||
fc620387 | 199 | static int |
5b1c542e | 200 | start_inferior (char **argv) |
c906108c | 201 | { |
ccd213ac | 202 | char **new_argv = argv; |
2d717e4f | 203 | |
ccd213ac DJ |
204 | if (wrapper_argv != NULL) |
205 | { | |
206 | int i, count = 1; | |
207 | ||
208 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
209 | count++; | |
210 | for (i = 0; argv[i] != NULL; i++) | |
211 | count++; | |
212 | new_argv = alloca (sizeof (char *) * count); | |
213 | count = 0; | |
214 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
215 | new_argv[count++] = wrapper_argv[i]; | |
216 | for (i = 0; argv[i] != NULL; i++) | |
217 | new_argv[count++] = argv[i]; | |
218 | new_argv[count] = NULL; | |
219 | } | |
220 | ||
65730243 DE |
221 | if (debug_threads) |
222 | { | |
223 | int i; | |
224 | for (i = 0; new_argv[i]; ++i) | |
225 | fprintf (stderr, "new_argv[%d] = \"%s\"\n", i, new_argv[i]); | |
226 | fflush (stderr); | |
227 | } | |
228 | ||
b80864fb | 229 | #ifdef SIGTTOU |
a9fa9f7d DJ |
230 | signal (SIGTTOU, SIG_DFL); |
231 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 232 | #endif |
a9fa9f7d | 233 | |
122f36ef PA |
234 | /* Clear this so the backend doesn't get confused, thinking |
235 | CONT_THREAD died, and it needs to resume all threads. */ | |
236 | cont_thread = null_ptid; | |
237 | ||
ccd213ac | 238 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 239 | |
c588c53c MS |
240 | /* FIXME: we don't actually know at this point that the create |
241 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 242 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 243 | signal_pid); |
b80864fb | 244 | fflush (stderr); |
a9fa9f7d | 245 | |
b80864fb | 246 | #ifdef SIGTTOU |
a9fa9f7d DJ |
247 | signal (SIGTTOU, SIG_IGN); |
248 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
249 | terminal_fd = fileno (stderr); |
250 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
251 | tcsetpgrp (terminal_fd, signal_pid); | |
252 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 253 | #endif |
c906108c | 254 | |
ccd213ac DJ |
255 | if (wrapper_argv != NULL) |
256 | { | |
257 | struct thread_resume resume_info; | |
ccd213ac | 258 | |
ee47b2f8 | 259 | memset (&resume_info, 0, sizeof (resume_info)); |
95954743 | 260 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 261 | resume_info.kind = resume_continue; |
ccd213ac | 262 | resume_info.sig = 0; |
ccd213ac | 263 | |
06db92f0 | 264 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 265 | |
5b1c542e PA |
266 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
267 | return signal_pid; | |
ccd213ac DJ |
268 | |
269 | do | |
270 | { | |
2bd7c093 | 271 | (*the_target->resume) (&resume_info, 1); |
ccd213ac | 272 | |
06db92f0 | 273 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e PA |
274 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
275 | return signal_pid; | |
d20a8ad9 PA |
276 | |
277 | current_inferior->last_resume_kind = resume_stop; | |
278 | current_inferior->last_status = last_status; | |
ccd213ac | 279 | } |
a493e3e2 | 280 | while (last_status.value.sig != GDB_SIGNAL_TRAP); |
ccd213ac | 281 | |
5b1c542e | 282 | return signal_pid; |
ccd213ac DJ |
283 | } |
284 | ||
5b1c542e PA |
285 | /* Wait till we are at 1st instruction in program, return new pid |
286 | (assuming success). */ | |
95954743 | 287 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 288 | |
d20a8ad9 PA |
289 | if (last_status.kind != TARGET_WAITKIND_EXITED |
290 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
291 | { | |
292 | current_inferior->last_resume_kind = resume_stop; | |
293 | current_inferior->last_status = last_status; | |
294 | } | |
295 | ||
5b1c542e | 296 | return signal_pid; |
c906108c SS |
297 | } |
298 | ||
45b7b345 | 299 | static int |
5b1c542e | 300 | attach_inferior (int pid) |
45b7b345 DJ |
301 | { |
302 | /* myattach should return -1 if attaching is unsupported, | |
303 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 304 | |
45b7b345 DJ |
305 | if (myattach (pid) != 0) |
306 | return -1; | |
307 | ||
6910d122 | 308 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 309 | fflush (stderr); |
6910d122 | 310 | |
a9fa9f7d DJ |
311 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
312 | attach function, so that it can be the main thread instead of | |
313 | whichever we were told to attach to. */ | |
314 | signal_pid = pid; | |
315 | ||
7d5d4e98 PA |
316 | /* Clear this so the backend doesn't get confused, thinking |
317 | CONT_THREAD died, and it needs to resume all threads. */ | |
318 | cont_thread = null_ptid; | |
319 | ||
bd99dc85 PA |
320 | if (!non_stop) |
321 | { | |
95954743 | 322 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
323 | |
324 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
325 | process using the "attach" command, but this is different; it's | |
326 | just using "target remote". Pretend it's just starting up. */ | |
327 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 PA |
328 | && last_status.value.sig == GDB_SIGNAL_STOP) |
329 | last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 PA |
330 | |
331 | current_inferior->last_resume_kind = resume_stop; | |
332 | current_inferior->last_status = last_status; | |
bd99dc85 | 333 | } |
9db87ebd | 334 | |
45b7b345 DJ |
335 | return 0; |
336 | } | |
337 | ||
c906108c | 338 | extern int remote_debug; |
ce3a066d | 339 | |
0876f84a DJ |
340 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
341 | or -1 otherwise. */ | |
342 | ||
343 | static int | |
d08aafef | 344 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 345 | { |
d08aafef PA |
346 | /* After the read marker and annex, qXfer looks like a |
347 | traditional 'm' packet. */ | |
348 | decode_m_packet (buf, ofs, len); | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
353 | static int | |
354 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
355 | { | |
356 | /* Extract and NUL-terminate the object. */ | |
357 | *object = buf; | |
358 | while (*buf && *buf != ':') | |
359 | buf++; | |
360 | if (*buf == '\0') | |
361 | return -1; | |
362 | *buf++ = 0; | |
363 | ||
364 | /* Extract and NUL-terminate the read/write action. */ | |
365 | *rw = buf; | |
366 | while (*buf && *buf != ':') | |
367 | buf++; | |
368 | if (*buf == '\0') | |
369 | return -1; | |
370 | *buf++ = 0; | |
371 | ||
0876f84a DJ |
372 | /* Extract and NUL-terminate the annex. */ |
373 | *annex = buf; | |
374 | while (*buf && *buf != ':') | |
375 | buf++; | |
376 | if (*buf == '\0') | |
377 | return -1; | |
378 | *buf++ = 0; | |
379 | ||
d08aafef | 380 | *offset = buf; |
0876f84a DJ |
381 | return 0; |
382 | } | |
383 | ||
384 | /* Write the response to a successful qXfer read. Returns the | |
385 | length of the (binary) data stored in BUF, corresponding | |
386 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
387 | the first character of the response. */ | |
388 | static int | |
23181151 | 389 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
0876f84a DJ |
390 | { |
391 | int out_len; | |
392 | ||
393 | if (is_more) | |
394 | buf[0] = 'm'; | |
395 | else | |
396 | buf[0] = 'l'; | |
397 | ||
398 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, | |
399 | PBUFSIZ - 2) + 1; | |
400 | } | |
401 | ||
9accd112 MM |
402 | /* Handle btrace enabling. */ |
403 | ||
404 | static const char * | |
405 | handle_btrace_enable (struct thread_info *thread) | |
406 | { | |
407 | if (thread->btrace != NULL) | |
408 | return "E.Btrace already enabled."; | |
409 | ||
410 | thread->btrace = target_enable_btrace (thread->entry.id); | |
411 | if (thread->btrace == NULL) | |
412 | return "E.Could not enable btrace."; | |
413 | ||
414 | return NULL; | |
415 | } | |
416 | ||
417 | /* Handle btrace disabling. */ | |
418 | ||
419 | static const char * | |
420 | handle_btrace_disable (struct thread_info *thread) | |
421 | { | |
422 | ||
423 | if (thread->btrace == NULL) | |
424 | return "E.Branch tracing not enabled."; | |
425 | ||
426 | if (target_disable_btrace (thread->btrace) != 0) | |
427 | return "E.Could not disable branch tracing."; | |
428 | ||
429 | thread->btrace = NULL; | |
430 | return NULL; | |
431 | } | |
432 | ||
433 | /* Handle the "Qbtrace" packet. */ | |
434 | ||
435 | static int | |
436 | handle_btrace_general_set (char *own_buf) | |
437 | { | |
438 | struct thread_info *thread; | |
439 | const char *err; | |
440 | char *op; | |
441 | ||
442 | if (strncmp ("Qbtrace:", own_buf, strlen ("Qbtrace:")) != 0) | |
443 | return 0; | |
444 | ||
445 | op = own_buf + strlen ("Qbtrace:"); | |
446 | ||
447 | if (!target_supports_btrace ()) | |
448 | { | |
449 | strcpy (own_buf, "E.Target does not support branch tracing."); | |
450 | return -1; | |
451 | } | |
452 | ||
453 | if (ptid_equal (general_thread, null_ptid) | |
454 | || ptid_equal (general_thread, minus_one_ptid)) | |
455 | { | |
456 | strcpy (own_buf, "E.Must select a single thread."); | |
457 | return -1; | |
458 | } | |
459 | ||
460 | thread = find_thread_ptid (general_thread); | |
461 | if (thread == NULL) | |
462 | { | |
463 | strcpy (own_buf, "E.No such thread."); | |
464 | return -1; | |
465 | } | |
466 | ||
467 | err = NULL; | |
468 | ||
469 | if (strcmp (op, "bts") == 0) | |
470 | err = handle_btrace_enable (thread); | |
471 | else if (strcmp (op, "off") == 0) | |
472 | err = handle_btrace_disable (thread); | |
473 | else | |
474 | err = "E.Bad Qbtrace operation. Use bts or off."; | |
475 | ||
476 | if (err != 0) | |
477 | strcpy (own_buf, err); | |
478 | else | |
479 | write_ok (own_buf); | |
480 | ||
481 | return 1; | |
482 | } | |
483 | ||
89be2091 | 484 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
485 | |
486 | static void | |
89be2091 DJ |
487 | handle_general_set (char *own_buf) |
488 | { | |
489 | if (strncmp ("QPassSignals:", own_buf, strlen ("QPassSignals:")) == 0) | |
490 | { | |
a493e3e2 | 491 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
492 | const char *p = own_buf + strlen ("QPassSignals:"); |
493 | CORE_ADDR cursig; | |
494 | ||
495 | p = decode_address_to_semicolon (&cursig, p); | |
496 | for (i = 0; i < numsigs; i++) | |
497 | { | |
498 | if (i == cursig) | |
499 | { | |
500 | pass_signals[i] = 1; | |
501 | if (*p == '\0') | |
502 | /* Keep looping, to clear the remaining signals. */ | |
503 | cursig = -1; | |
504 | else | |
505 | p = decode_address_to_semicolon (&cursig, p); | |
506 | } | |
507 | else | |
508 | pass_signals[i] = 0; | |
509 | } | |
510 | strcpy (own_buf, "OK"); | |
511 | return; | |
512 | } | |
513 | ||
9b224c5e PA |
514 | if (strncmp ("QProgramSignals:", own_buf, strlen ("QProgramSignals:")) == 0) |
515 | { | |
a493e3e2 | 516 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
517 | const char *p = own_buf + strlen ("QProgramSignals:"); |
518 | CORE_ADDR cursig; | |
519 | ||
520 | program_signals_p = 1; | |
521 | ||
522 | p = decode_address_to_semicolon (&cursig, p); | |
523 | for (i = 0; i < numsigs; i++) | |
524 | { | |
525 | if (i == cursig) | |
526 | { | |
527 | program_signals[i] = 1; | |
528 | if (*p == '\0') | |
529 | /* Keep looping, to clear the remaining signals. */ | |
530 | cursig = -1; | |
531 | else | |
532 | p = decode_address_to_semicolon (&cursig, p); | |
533 | } | |
534 | else | |
535 | program_signals[i] = 0; | |
536 | } | |
537 | strcpy (own_buf, "OK"); | |
538 | return; | |
539 | } | |
540 | ||
a6f3e723 SL |
541 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
542 | { | |
543 | if (remote_debug) | |
544 | { | |
545 | fprintf (stderr, "[noack mode enabled]\n"); | |
546 | fflush (stderr); | |
547 | } | |
548 | ||
549 | noack_mode = 1; | |
550 | write_ok (own_buf); | |
551 | return; | |
552 | } | |
553 | ||
bd99dc85 PA |
554 | if (strncmp (own_buf, "QNonStop:", 9) == 0) |
555 | { | |
556 | char *mode = own_buf + 9; | |
557 | int req = -1; | |
558 | char *req_str; | |
559 | ||
560 | if (strcmp (mode, "0") == 0) | |
561 | req = 0; | |
562 | else if (strcmp (mode, "1") == 0) | |
563 | req = 1; | |
564 | else | |
565 | { | |
566 | /* We don't know what this mode is, so complain to | |
567 | GDB. */ | |
568 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
569 | own_buf); | |
570 | write_enn (own_buf); | |
571 | return; | |
572 | } | |
573 | ||
574 | req_str = req ? "non-stop" : "all-stop"; | |
575 | if (start_non_stop (req) != 0) | |
576 | { | |
577 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
578 | write_enn (own_buf); | |
579 | return; | |
580 | } | |
581 | ||
582 | non_stop = req; | |
583 | ||
584 | if (remote_debug) | |
585 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
586 | ||
587 | write_ok (own_buf); | |
588 | return; | |
589 | } | |
590 | ||
03583c20 UW |
591 | if (strncmp ("QDisableRandomization:", own_buf, |
592 | strlen ("QDisableRandomization:")) == 0) | |
593 | { | |
594 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
595 | ULONGEST setting; | |
596 | ||
597 | unpack_varlen_hex (packet, &setting); | |
598 | disable_randomization = setting; | |
599 | ||
600 | if (remote_debug) | |
601 | { | |
602 | if (disable_randomization) | |
603 | fprintf (stderr, "[address space randomization disabled]\n"); | |
604 | else | |
605 | fprintf (stderr, "[address space randomization enabled]\n"); | |
606 | } | |
607 | ||
608 | write_ok (own_buf); | |
609 | return; | |
610 | } | |
611 | ||
219f2f23 PA |
612 | if (target_supports_tracepoints () |
613 | && handle_tracepoint_general_set (own_buf)) | |
614 | return; | |
615 | ||
d1feda86 YQ |
616 | if (strncmp ("QAgent:", own_buf, strlen ("QAgent:")) == 0) |
617 | { | |
618 | char *mode = own_buf + strlen ("QAgent:"); | |
619 | int req = 0; | |
620 | ||
621 | if (strcmp (mode, "0") == 0) | |
622 | req = 0; | |
623 | else if (strcmp (mode, "1") == 0) | |
624 | req = 1; | |
625 | else | |
626 | { | |
627 | /* We don't know what this value is, so complain to GDB. */ | |
628 | sprintf (own_buf, "E.Unknown QAgent value"); | |
629 | return; | |
630 | } | |
631 | ||
632 | /* Update the flag. */ | |
633 | use_agent = req; | |
634 | if (remote_debug) | |
635 | fprintf (stderr, "[%s agent]\n", req ? "Enable" : "Disable"); | |
636 | write_ok (own_buf); | |
637 | return; | |
638 | } | |
639 | ||
9accd112 MM |
640 | if (handle_btrace_general_set (own_buf)) |
641 | return; | |
642 | ||
89be2091 DJ |
643 | /* Otherwise we didn't know what packet it was. Say we didn't |
644 | understand it. */ | |
645 | own_buf[0] = 0; | |
646 | } | |
647 | ||
23181151 | 648 | static const char * |
fb1e4ffc | 649 | get_features_xml (const char *annex) |
23181151 | 650 | { |
3aee8918 PA |
651 | const struct target_desc *desc = current_target_desc (); |
652 | ||
653 | /* `desc->xmltarget' defines what to return when looking for the | |
654 | "target.xml" file. Its contents can either be verbatim XML code | |
655 | (prefixed with a '@') or else the name of the actual XML file to | |
656 | be used in place of "target.xml". | |
fb1e4ffc | 657 | |
9b4b61c8 UW |
658 | This variable is set up from the auto-generated |
659 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 660 | |
3aee8918 | 661 | if (desc->xmltarget != NULL && strcmp (annex, "target.xml") == 0) |
23181151 | 662 | { |
3aee8918 PA |
663 | if (*desc->xmltarget == '@') |
664 | return desc->xmltarget + 1; | |
23181151 | 665 | else |
3aee8918 | 666 | annex = desc->xmltarget; |
23181151 DJ |
667 | } |
668 | ||
9b4b61c8 UW |
669 | #ifdef USE_XML |
670 | { | |
671 | extern const char *const xml_builtin[][2]; | |
672 | int i; | |
673 | ||
674 | /* Look for the annex. */ | |
675 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
676 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
677 | break; | |
678 | ||
679 | if (xml_builtin[i][0] != NULL) | |
680 | return xml_builtin[i][1]; | |
681 | } | |
682 | #endif | |
683 | ||
684 | return NULL; | |
23181151 DJ |
685 | } |
686 | ||
c74d0ad8 DJ |
687 | void |
688 | monitor_show_help (void) | |
689 | { | |
690 | monitor_output ("The following monitor commands are supported:\n"); | |
691 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 692 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
693 | monitor_output (" set debug-hw-points <0|1>\n"); |
694 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
695 | monitor_output (" set remote-debug <0|1>\n"); |
696 | monitor_output (" Enable remote protocol debugging messages\n"); | |
ecd7ecbc DJ |
697 | monitor_output (" exit\n"); |
698 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
699 | } |
700 | ||
764880b7 PA |
701 | /* Read trace frame or inferior memory. Returns the number of bytes |
702 | actually read, zero when no further transfer is possible, and -1 on | |
703 | error. Return of a positive value smaller than LEN does not | |
704 | indicate there's no more to be read, only the end of the transfer. | |
705 | E.g., when GDB reads memory from a traceframe, a first request may | |
706 | be served from a memory block that does not cover the whole request | |
707 | length. A following request gets the rest served from either | |
708 | another block (of the same traceframe) or from the read-only | |
709 | regions. */ | |
219f2f23 PA |
710 | |
711 | static int | |
90d74c30 | 712 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 713 | { |
764880b7 | 714 | int res; |
90d74c30 | 715 | |
219f2f23 PA |
716 | if (current_traceframe >= 0) |
717 | { | |
718 | ULONGEST nbytes; | |
719 | ULONGEST length = len; | |
720 | ||
721 | if (traceframe_read_mem (current_traceframe, | |
722 | memaddr, myaddr, len, &nbytes)) | |
9a13b2fa | 723 | return -1; |
219f2f23 | 724 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
725 | if (nbytes > 0) |
726 | return nbytes; | |
219f2f23 | 727 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 728 | return -1; |
219f2f23 PA |
729 | /* Otherwise we have a valid readonly case, fall through. */ |
730 | /* (assume no half-trace half-real blocks for now) */ | |
731 | } | |
732 | ||
764880b7 PA |
733 | res = prepare_to_access_memory (); |
734 | if (res == 0) | |
90d74c30 | 735 | { |
764880b7 | 736 | res = read_inferior_memory (memaddr, myaddr, len); |
0146f85b | 737 | done_accessing_memory (); |
90d74c30 | 738 | |
764880b7 PA |
739 | return res == 0 ? len : -1; |
740 | } | |
741 | else | |
742 | return -1; | |
219f2f23 PA |
743 | } |
744 | ||
745 | /* Write trace frame or inferior memory. Actually, writing to trace | |
746 | frames is forbidden. */ | |
747 | ||
748 | static int | |
90d74c30 | 749 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
750 | { |
751 | if (current_traceframe >= 0) | |
752 | return EIO; | |
753 | else | |
90d74c30 PA |
754 | { |
755 | int ret; | |
756 | ||
757 | ret = prepare_to_access_memory (); | |
758 | if (ret == 0) | |
759 | { | |
760 | ret = write_inferior_memory (memaddr, myaddr, len); | |
0146f85b | 761 | done_accessing_memory (); |
90d74c30 PA |
762 | } |
763 | return ret; | |
764 | } | |
219f2f23 PA |
765 | } |
766 | ||
08388c79 DE |
767 | /* Subroutine of handle_search_memory to simplify it. */ |
768 | ||
769 | static int | |
770 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
771 | gdb_byte *pattern, unsigned pattern_len, | |
772 | gdb_byte *search_buf, | |
773 | unsigned chunk_size, unsigned search_buf_size, | |
774 | CORE_ADDR *found_addrp) | |
775 | { | |
776 | /* Prime the search buffer. */ | |
777 | ||
764880b7 PA |
778 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
779 | != search_buf_size) | |
08388c79 | 780 | { |
b3dc46ff AB |
781 | warning ("Unable to access %ld bytes of target " |
782 | "memory at 0x%lx, halting search.", | |
783 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
784 | return -1; |
785 | } | |
786 | ||
787 | /* Perform the search. | |
788 | ||
789 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
790 | When we've scanned N bytes we copy the trailing bytes to the start and | |
791 | read in another N bytes. */ | |
792 | ||
793 | while (search_space_len >= pattern_len) | |
794 | { | |
795 | gdb_byte *found_ptr; | |
796 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
797 | ? search_space_len | |
798 | : search_buf_size); | |
799 | ||
800 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); | |
801 | ||
802 | if (found_ptr != NULL) | |
803 | { | |
804 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
805 | *found_addrp = found_addr; | |
806 | return 1; | |
807 | } | |
808 | ||
809 | /* Not found in this chunk, skip to next chunk. */ | |
810 | ||
811 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
812 | if (search_space_len >= chunk_size) | |
813 | search_space_len -= chunk_size; | |
814 | else | |
815 | search_space_len = 0; | |
816 | ||
817 | if (search_space_len >= pattern_len) | |
818 | { | |
819 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 820 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
821 | int nr_to_read; |
822 | ||
823 | /* Copy the trailing part of the previous iteration to the front | |
824 | of the buffer for the next iteration. */ | |
825 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
826 | ||
827 | nr_to_read = (search_space_len - keep_len < chunk_size | |
828 | ? search_space_len - keep_len | |
829 | : chunk_size); | |
830 | ||
90d74c30 | 831 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 832 | nr_to_read) != search_buf_size) |
08388c79 | 833 | { |
b3dc46ff | 834 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 835 | "at 0x%lx, halting search.", |
b3dc46ff | 836 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
837 | return -1; |
838 | } | |
839 | ||
840 | start_addr += chunk_size; | |
841 | } | |
842 | } | |
843 | ||
844 | /* Not found. */ | |
845 | ||
846 | return 0; | |
847 | } | |
848 | ||
849 | /* Handle qSearch:memory packets. */ | |
850 | ||
851 | static void | |
852 | handle_search_memory (char *own_buf, int packet_len) | |
853 | { | |
854 | CORE_ADDR start_addr; | |
855 | CORE_ADDR search_space_len; | |
856 | gdb_byte *pattern; | |
857 | unsigned int pattern_len; | |
858 | /* NOTE: also defined in find.c testcase. */ | |
859 | #define SEARCH_CHUNK_SIZE 16000 | |
860 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
861 | /* Buffer to hold memory contents for searching. */ | |
862 | gdb_byte *search_buf; | |
863 | unsigned search_buf_size; | |
864 | int found; | |
865 | CORE_ADDR found_addr; | |
866 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
867 | ||
aef93bd7 | 868 | pattern = malloc (packet_len); |
08388c79 DE |
869 | if (pattern == NULL) |
870 | { | |
5e1471f5 | 871 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
872 | strcpy (own_buf, "E00"); |
873 | return; | |
874 | } | |
875 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
876 | packet_len - cmd_name_len, | |
877 | &start_addr, &search_space_len, | |
878 | pattern, &pattern_len) < 0) | |
879 | { | |
880 | free (pattern); | |
5e1471f5 | 881 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
882 | strcpy (own_buf, "E00"); |
883 | return; | |
884 | } | |
885 | ||
886 | search_buf_size = chunk_size + pattern_len - 1; | |
887 | ||
888 | /* No point in trying to allocate a buffer larger than the search space. */ | |
889 | if (search_space_len < search_buf_size) | |
890 | search_buf_size = search_space_len; | |
891 | ||
aef93bd7 | 892 | search_buf = malloc (search_buf_size); |
08388c79 DE |
893 | if (search_buf == NULL) |
894 | { | |
895 | free (pattern); | |
5e1471f5 | 896 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
897 | strcpy (own_buf, "E00"); |
898 | return; | |
899 | } | |
900 | ||
901 | found = handle_search_memory_1 (start_addr, search_space_len, | |
902 | pattern, pattern_len, | |
903 | search_buf, chunk_size, search_buf_size, | |
904 | &found_addr); | |
905 | ||
906 | if (found > 0) | |
907 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
908 | else if (found == 0) | |
909 | strcpy (own_buf, "0"); | |
910 | else | |
911 | strcpy (own_buf, "E00"); | |
912 | ||
913 | free (search_buf); | |
914 | free (pattern); | |
915 | } | |
916 | ||
2d717e4f DJ |
917 | #define require_running(BUF) \ |
918 | if (!target_running ()) \ | |
919 | { \ | |
920 | write_enn (BUF); \ | |
921 | return; \ | |
922 | } | |
923 | ||
cdbfd419 PP |
924 | /* Handle monitor commands not handled by target-specific handlers. */ |
925 | ||
926 | static void | |
d73f2619 | 927 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
928 | { |
929 | if (strcmp (mon, "set debug 1") == 0) | |
930 | { | |
931 | debug_threads = 1; | |
932 | monitor_output ("Debug output enabled.\n"); | |
933 | } | |
934 | else if (strcmp (mon, "set debug 0") == 0) | |
935 | { | |
936 | debug_threads = 0; | |
937 | monitor_output ("Debug output disabled.\n"); | |
938 | } | |
939 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
940 | { | |
941 | debug_hw_points = 1; | |
942 | monitor_output ("H/W point debugging output enabled.\n"); | |
943 | } | |
944 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
945 | { | |
946 | debug_hw_points = 0; | |
947 | monitor_output ("H/W point debugging output disabled.\n"); | |
948 | } | |
949 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
950 | { | |
951 | remote_debug = 1; | |
952 | monitor_output ("Protocol debug output enabled.\n"); | |
953 | } | |
954 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
955 | { | |
956 | remote_debug = 0; | |
957 | monitor_output ("Protocol debug output disabled.\n"); | |
958 | } | |
959 | else if (strcmp (mon, "help") == 0) | |
960 | monitor_show_help (); | |
961 | else if (strcmp (mon, "exit") == 0) | |
962 | exit_requested = 1; | |
963 | else | |
964 | { | |
965 | monitor_output ("Unknown monitor command.\n\n"); | |
966 | monitor_show_help (); | |
967 | write_enn (own_buf); | |
968 | } | |
969 | } | |
970 | ||
d08aafef PA |
971 | /* Associates a callback with each supported qXfer'able object. */ |
972 | ||
973 | struct qxfer | |
974 | { | |
975 | /* The object this handler handles. */ | |
976 | const char *object; | |
977 | ||
978 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
979 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
980 | the starting point. The ANNEX can be used to provide additional | |
981 | data-specific information to the target. | |
982 | ||
983 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
984 | further transfer is possible, -1 on error, -2 when the transfer |
985 | is not supported, and -3 on a verbose error message that should | |
986 | be preserved. Return of a positive value smaller than LEN does | |
987 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
988 | |
989 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
990 | int (*xfer) (const char *annex, | |
991 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
992 | ULONGEST offset, LONGEST len); | |
993 | }; | |
994 | ||
995 | /* Handle qXfer:auxv:read. */ | |
996 | ||
997 | static int | |
998 | handle_qxfer_auxv (const char *annex, | |
999 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1000 | ULONGEST offset, LONGEST len) | |
1001 | { | |
1002 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1003 | return -2; | |
1004 | ||
1005 | if (annex[0] != '\0' || !target_running ()) | |
1006 | return -1; | |
1007 | ||
1008 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1009 | } | |
1010 | ||
1011 | /* Handle qXfer:features:read. */ | |
1012 | ||
1013 | static int | |
1014 | handle_qxfer_features (const char *annex, | |
1015 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1016 | ULONGEST offset, LONGEST len) | |
1017 | { | |
1018 | const char *document; | |
1019 | size_t total_len; | |
1020 | ||
1021 | if (writebuf != NULL) | |
1022 | return -2; | |
1023 | ||
1024 | if (!target_running ()) | |
1025 | return -1; | |
1026 | ||
1027 | /* Grab the correct annex. */ | |
1028 | document = get_features_xml (annex); | |
1029 | if (document == NULL) | |
1030 | return -1; | |
1031 | ||
1032 | total_len = strlen (document); | |
1033 | ||
1034 | if (offset > total_len) | |
1035 | return -1; | |
1036 | ||
1037 | if (offset + len > total_len) | |
1038 | len = total_len - offset; | |
1039 | ||
1040 | memcpy (readbuf, document + offset, len); | |
1041 | return len; | |
1042 | } | |
1043 | ||
1044 | /* Handle qXfer:libraries:read. */ | |
1045 | ||
1046 | static int | |
1047 | handle_qxfer_libraries (const char *annex, | |
1048 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1049 | ULONGEST offset, LONGEST len) | |
1050 | { | |
1051 | unsigned int total_len; | |
1052 | char *document, *p; | |
1053 | struct inferior_list_entry *dll_ptr; | |
1054 | ||
1055 | if (writebuf != NULL) | |
1056 | return -2; | |
1057 | ||
1058 | if (annex[0] != '\0' || !target_running ()) | |
1059 | return -1; | |
1060 | ||
1061 | /* Over-estimate the necessary memory. Assume that every character | |
1062 | in the library name must be escaped. */ | |
1063 | total_len = 64; | |
1064 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
1065 | total_len += 128 + 6 * strlen (((struct dll_info *) dll_ptr)->name); | |
1066 | ||
1067 | document = malloc (total_len); | |
1068 | if (document == NULL) | |
1069 | return -1; | |
1070 | ||
1071 | strcpy (document, "<library-list>\n"); | |
1072 | p = document + strlen (document); | |
1073 | ||
1074 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
1075 | { | |
1076 | struct dll_info *dll = (struct dll_info *) dll_ptr; | |
1077 | char *name; | |
1078 | ||
1079 | strcpy (p, " <library name=\""); | |
1080 | p = p + strlen (p); | |
1081 | name = xml_escape_text (dll->name); | |
1082 | strcpy (p, name); | |
1083 | free (name); | |
1084 | p = p + strlen (p); | |
1085 | strcpy (p, "\"><segment address=\""); | |
1086 | p = p + strlen (p); | |
1087 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1088 | p = p + strlen (p); | |
1089 | strcpy (p, "\"/></library>\n"); | |
1090 | p = p + strlen (p); | |
1091 | } | |
1092 | ||
1093 | strcpy (p, "</library-list>\n"); | |
1094 | ||
1095 | total_len = strlen (document); | |
1096 | ||
1097 | if (offset > total_len) | |
1098 | { | |
1099 | free (document); | |
1100 | return -1; | |
1101 | } | |
1102 | ||
1103 | if (offset + len > total_len) | |
1104 | len = total_len - offset; | |
1105 | ||
1106 | memcpy (readbuf, document + offset, len); | |
1107 | free (document); | |
1108 | return len; | |
1109 | } | |
1110 | ||
2268b414 JK |
1111 | /* Handle qXfer:libraries-svr4:read. */ |
1112 | ||
1113 | static int | |
1114 | handle_qxfer_libraries_svr4 (const char *annex, | |
1115 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1116 | ULONGEST offset, LONGEST len) | |
1117 | { | |
1118 | if (writebuf != NULL) | |
1119 | return -2; | |
1120 | ||
b1fbec62 | 1121 | if (!target_running () || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1122 | return -1; |
1123 | ||
1124 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1125 | } | |
1126 | ||
d08aafef PA |
1127 | /* Handle qXfer:osadata:read. */ |
1128 | ||
1129 | static int | |
1130 | handle_qxfer_osdata (const char *annex, | |
1131 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1132 | ULONGEST offset, LONGEST len) | |
1133 | { | |
1134 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1135 | return -2; | |
1136 | ||
1137 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1138 | } | |
1139 | ||
1140 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1141 | ||
1142 | static int | |
1143 | handle_qxfer_siginfo (const char *annex, | |
1144 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1145 | ULONGEST offset, LONGEST len) | |
1146 | { | |
1147 | if (the_target->qxfer_siginfo == NULL) | |
1148 | return -2; | |
1149 | ||
1150 | if (annex[0] != '\0' || !target_running ()) | |
1151 | return -1; | |
1152 | ||
1153 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1154 | } | |
1155 | ||
1156 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1157 | ||
1158 | static int | |
1159 | handle_qxfer_spu (const char *annex, | |
1160 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1161 | ULONGEST offset, LONGEST len) | |
1162 | { | |
1163 | if (the_target->qxfer_spu == NULL) | |
1164 | return -2; | |
1165 | ||
1166 | if (!target_running ()) | |
1167 | return -1; | |
1168 | ||
1169 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1170 | } | |
1171 | ||
1172 | /* Handle qXfer:statictrace:read. */ | |
1173 | ||
1174 | static int | |
1175 | handle_qxfer_statictrace (const char *annex, | |
1176 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1177 | ULONGEST offset, LONGEST len) | |
1178 | { | |
1179 | ULONGEST nbytes; | |
1180 | ||
1181 | if (writebuf != NULL) | |
1182 | return -2; | |
1183 | ||
1184 | if (annex[0] != '\0' || !target_running () || current_traceframe == -1) | |
1185 | return -1; | |
1186 | ||
1187 | if (traceframe_read_sdata (current_traceframe, offset, | |
1188 | readbuf, len, &nbytes)) | |
1189 | return -1; | |
1190 | return nbytes; | |
1191 | } | |
1192 | ||
1193 | /* Helper for handle_qxfer_threads. */ | |
1194 | ||
dc146f7c | 1195 | static void |
d08aafef | 1196 | handle_qxfer_threads_proper (struct buffer *buffer) |
dc146f7c VP |
1197 | { |
1198 | struct inferior_list_entry *thread; | |
1199 | ||
1200 | buffer_grow_str (buffer, "<threads>\n"); | |
1201 | ||
1202 | for (thread = all_threads.head; thread; thread = thread->next) | |
1203 | { | |
1204 | ptid_t ptid = thread_to_gdb_id ((struct thread_info *)thread); | |
1205 | char ptid_s[100]; | |
3e10640f | 1206 | int core = target_core_of_thread (ptid); |
dc146f7c VP |
1207 | char core_s[21]; |
1208 | ||
1209 | write_ptid (ptid_s, ptid); | |
1210 | ||
dc146f7c VP |
1211 | if (core != -1) |
1212 | { | |
1213 | sprintf (core_s, "%d", core); | |
1214 | buffer_xml_printf (buffer, "<thread id=\"%s\" core=\"%s\"/>\n", | |
1215 | ptid_s, core_s); | |
1216 | } | |
1217 | else | |
1218 | { | |
1219 | buffer_xml_printf (buffer, "<thread id=\"%s\"/>\n", | |
1220 | ptid_s); | |
1221 | } | |
1222 | } | |
1223 | ||
1224 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1225 | } | |
1226 | ||
d08aafef PA |
1227 | /* Handle qXfer:threads:read. */ |
1228 | ||
dc146f7c | 1229 | static int |
d08aafef PA |
1230 | handle_qxfer_threads (const char *annex, |
1231 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1232 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1233 | { |
1234 | static char *result = 0; | |
1235 | static unsigned int result_length = 0; | |
1236 | ||
d08aafef PA |
1237 | if (writebuf != NULL) |
1238 | return -2; | |
1239 | ||
1240 | if (!target_running () || annex[0] != '\0') | |
1241 | return -1; | |
dc146f7c VP |
1242 | |
1243 | if (offset == 0) | |
1244 | { | |
1245 | struct buffer buffer; | |
1246 | /* When asked for data at offset 0, generate everything and store into | |
1247 | 'result'. Successive reads will be served off 'result'. */ | |
1248 | if (result) | |
1249 | free (result); | |
1250 | ||
1251 | buffer_init (&buffer); | |
1252 | ||
d08aafef | 1253 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1254 | |
1255 | result = buffer_finish (&buffer); | |
1256 | result_length = strlen (result); | |
1257 | buffer_free (&buffer); | |
1258 | } | |
1259 | ||
1260 | if (offset >= result_length) | |
1261 | { | |
1262 | /* We're out of data. */ | |
1263 | free (result); | |
1264 | result = NULL; | |
1265 | result_length = 0; | |
1266 | return 0; | |
1267 | } | |
1268 | ||
d08aafef PA |
1269 | if (len > result_length - offset) |
1270 | len = result_length - offset; | |
1271 | ||
1272 | memcpy (readbuf, result + offset, len); | |
1273 | ||
1274 | return len; | |
1275 | } | |
1276 | ||
b3b9301e PA |
1277 | /* Handle qXfer:traceframe-info:read. */ |
1278 | ||
1279 | static int | |
1280 | handle_qxfer_traceframe_info (const char *annex, | |
1281 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1282 | ULONGEST offset, LONGEST len) | |
1283 | { | |
1284 | static char *result = 0; | |
1285 | static unsigned int result_length = 0; | |
1286 | ||
1287 | if (writebuf != NULL) | |
1288 | return -2; | |
1289 | ||
1290 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1291 | return -1; | |
1292 | ||
1293 | if (offset == 0) | |
1294 | { | |
1295 | struct buffer buffer; | |
1296 | ||
1297 | /* When asked for data at offset 0, generate everything and | |
1298 | store into 'result'. Successive reads will be served off | |
1299 | 'result'. */ | |
1300 | free (result); | |
1301 | ||
1302 | buffer_init (&buffer); | |
1303 | ||
1304 | traceframe_read_info (current_traceframe, &buffer); | |
1305 | ||
1306 | result = buffer_finish (&buffer); | |
1307 | result_length = strlen (result); | |
1308 | buffer_free (&buffer); | |
1309 | } | |
1310 | ||
1311 | if (offset >= result_length) | |
1312 | { | |
1313 | /* We're out of data. */ | |
1314 | free (result); | |
1315 | result = NULL; | |
1316 | result_length = 0; | |
1317 | return 0; | |
1318 | } | |
1319 | ||
1320 | if (len > result_length - offset) | |
1321 | len = result_length - offset; | |
1322 | ||
1323 | memcpy (readbuf, result + offset, len); | |
1324 | return len; | |
1325 | } | |
1326 | ||
78d85199 YQ |
1327 | /* Handle qXfer:fdpic:read. */ |
1328 | ||
1329 | static int | |
1330 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1331 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1332 | { | |
1333 | if (the_target->read_loadmap == NULL) | |
1334 | return -2; | |
1335 | ||
1336 | if (!target_running ()) | |
1337 | return -1; | |
1338 | ||
1339 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1340 | } | |
1341 | ||
9accd112 MM |
1342 | /* Handle qXfer:btrace:read. */ |
1343 | ||
1344 | static int | |
1345 | handle_qxfer_btrace (const char *annex, | |
1346 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1347 | ULONGEST offset, LONGEST len) | |
1348 | { | |
1349 | static struct buffer cache; | |
1350 | struct thread_info *thread; | |
969c39fb | 1351 | int type, result; |
9accd112 MM |
1352 | |
1353 | if (the_target->read_btrace == NULL || writebuf != NULL) | |
1354 | return -2; | |
1355 | ||
1356 | if (!target_running ()) | |
1357 | return -1; | |
1358 | ||
1359 | if (ptid_equal (general_thread, null_ptid) | |
1360 | || ptid_equal (general_thread, minus_one_ptid)) | |
1361 | { | |
1362 | strcpy (own_buf, "E.Must select a single thread."); | |
1363 | return -3; | |
1364 | } | |
1365 | ||
1366 | thread = find_thread_ptid (general_thread); | |
1367 | if (thread == NULL) | |
1368 | { | |
1369 | strcpy (own_buf, "E.No such thread."); | |
1370 | return -3; | |
1371 | } | |
1372 | ||
1373 | if (thread->btrace == NULL) | |
1374 | { | |
1375 | strcpy (own_buf, "E.Btrace not enabled."); | |
1376 | return -3; | |
1377 | } | |
1378 | ||
1379 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1380 | type = BTRACE_READ_ALL; |
9accd112 | 1381 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1382 | type = BTRACE_READ_NEW; |
969c39fb MM |
1383 | else if (strcmp (annex, "delta") == 0) |
1384 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1385 | else |
1386 | { | |
1387 | strcpy (own_buf, "E.Bad annex."); | |
1388 | return -3; | |
1389 | } | |
1390 | ||
1391 | if (offset == 0) | |
1392 | { | |
1393 | buffer_free (&cache); | |
1394 | ||
969c39fb MM |
1395 | result = target_read_btrace (thread->btrace, &cache, type); |
1396 | if (result != 0) | |
1397 | { | |
1398 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1399 | return -3; | |
1400 | } | |
9accd112 MM |
1401 | } |
1402 | else if (offset > cache.used_size) | |
1403 | { | |
1404 | buffer_free (&cache); | |
1405 | return -3; | |
1406 | } | |
1407 | ||
1408 | if (len > cache.used_size - offset) | |
1409 | len = cache.used_size - offset; | |
1410 | ||
1411 | memcpy (readbuf, cache.buffer + offset, len); | |
1412 | ||
1413 | return len; | |
1414 | } | |
1415 | ||
d08aafef PA |
1416 | static const struct qxfer qxfer_packets[] = |
1417 | { | |
1418 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1419 | { "btrace", handle_qxfer_btrace }, |
78d85199 | 1420 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1421 | { "features", handle_qxfer_features }, |
1422 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1423 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1424 | { "osdata", handle_qxfer_osdata }, |
1425 | { "siginfo", handle_qxfer_siginfo }, | |
1426 | { "spu", handle_qxfer_spu }, | |
1427 | { "statictrace", handle_qxfer_statictrace }, | |
1428 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1429 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1430 | }; |
1431 | ||
1432 | static int | |
1433 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1434 | { | |
1435 | int i; | |
1436 | char *object; | |
1437 | char *rw; | |
1438 | char *annex; | |
1439 | char *offset; | |
1440 | ||
1441 | if (strncmp (own_buf, "qXfer:", 6) != 0) | |
1442 | return 0; | |
1443 | ||
1444 | /* Grab the object, r/w and annex. */ | |
1445 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1446 | { | |
1447 | write_enn (own_buf); | |
1448 | return 1; | |
1449 | } | |
1450 | ||
1451 | for (i = 0; | |
1452 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1453 | i++) | |
1454 | { | |
1455 | const struct qxfer *q = &qxfer_packets[i]; | |
1456 | ||
1457 | if (strcmp (object, q->object) == 0) | |
1458 | { | |
1459 | if (strcmp (rw, "read") == 0) | |
1460 | { | |
1461 | unsigned char *data; | |
1462 | int n; | |
1463 | CORE_ADDR ofs; | |
1464 | unsigned int len; | |
1465 | ||
1466 | /* Grab the offset and length. */ | |
1467 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
1468 | { | |
1469 | write_enn (own_buf); | |
1470 | return 1; | |
1471 | } | |
1472 | ||
1473 | /* Read one extra byte, as an indicator of whether there is | |
1474 | more. */ | |
1475 | if (len > PBUFSIZ - 2) | |
1476 | len = PBUFSIZ - 2; | |
1477 | data = malloc (len + 1); | |
1478 | if (data == NULL) | |
1479 | { | |
1480 | write_enn (own_buf); | |
1481 | return 1; | |
1482 | } | |
1483 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
1484 | if (n == -2) | |
1485 | { | |
1486 | free (data); | |
1487 | return 0; | |
1488 | } | |
5cc22e4c MM |
1489 | else if (n == -3) |
1490 | { | |
1491 | /* Preserve error message. */ | |
1492 | } | |
d08aafef PA |
1493 | else if (n < 0) |
1494 | write_enn (own_buf); | |
1495 | else if (n > len) | |
1496 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1497 | else | |
1498 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1499 | ||
1500 | free (data); | |
1501 | return 1; | |
1502 | } | |
1503 | else if (strcmp (rw, "write") == 0) | |
1504 | { | |
1505 | int n; | |
1506 | unsigned int len; | |
1507 | CORE_ADDR ofs; | |
1508 | unsigned char *data; | |
1509 | ||
1510 | strcpy (own_buf, "E00"); | |
1511 | data = malloc (packet_len - (offset - own_buf)); | |
1512 | if (data == NULL) | |
1513 | { | |
1514 | write_enn (own_buf); | |
1515 | return 1; | |
1516 | } | |
1517 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
1518 | &ofs, &len, data) < 0) | |
1519 | { | |
1520 | free (data); | |
1521 | write_enn (own_buf); | |
1522 | return 1; | |
1523 | } | |
1524 | ||
1525 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
1526 | if (n == -2) | |
1527 | { | |
1528 | free (data); | |
1529 | return 0; | |
1530 | } | |
5cc22e4c MM |
1531 | else if (n == -3) |
1532 | { | |
1533 | /* Preserve error message. */ | |
1534 | } | |
d08aafef PA |
1535 | else if (n < 0) |
1536 | write_enn (own_buf); | |
1537 | else | |
1538 | sprintf (own_buf, "%x", n); | |
dc146f7c | 1539 | |
d08aafef PA |
1540 | free (data); |
1541 | return 1; | |
1542 | } | |
dc146f7c | 1543 | |
d08aafef PA |
1544 | return 0; |
1545 | } | |
1546 | } | |
dc146f7c | 1547 | |
d08aafef | 1548 | return 0; |
dc146f7c VP |
1549 | } |
1550 | ||
30ba68cb MS |
1551 | /* Table used by the crc32 function to calcuate the checksum. */ |
1552 | ||
1553 | static unsigned int crc32_table[256] = | |
1554 | {0, 0}; | |
1555 | ||
1556 | /* Compute 32 bit CRC from inferior memory. | |
1557 | ||
1558 | On success, return 32 bit CRC. | |
1559 | On failure, return (unsigned long long) -1. */ | |
1560 | ||
1561 | static unsigned long long | |
1562 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
1563 | { | |
1564 | if (!crc32_table[1]) | |
1565 | { | |
1566 | /* Initialize the CRC table and the decoding table. */ | |
1567 | int i, j; | |
1568 | unsigned int c; | |
1569 | ||
1570 | for (i = 0; i < 256; i++) | |
1571 | { | |
1572 | for (c = i << 24, j = 8; j > 0; --j) | |
1573 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
1574 | crc32_table[i] = c; | |
1575 | } | |
1576 | } | |
1577 | ||
1578 | while (len--) | |
1579 | { | |
1580 | unsigned char byte = 0; | |
1581 | ||
1582 | /* Return failure if memory read fails. */ | |
1583 | if (read_inferior_memory (base, &byte, 1) != 0) | |
1584 | return (unsigned long long) -1; | |
1585 | ||
1586 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ byte) & 255]; | |
1587 | base++; | |
1588 | } | |
1589 | return (unsigned long long) crc; | |
1590 | } | |
1591 | ||
ce3a066d | 1592 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 1593 | |
ce3a066d | 1594 | void |
0e7f50da | 1595 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 1596 | { |
0d62e5e8 DJ |
1597 | static struct inferior_list_entry *thread_ptr; |
1598 | ||
bb63802a | 1599 | /* Reply the current thread id. */ |
db42f210 | 1600 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 1601 | { |
95954743 | 1602 | ptid_t gdb_id; |
2d717e4f | 1603 | require_running (own_buf); |
bd99dc85 | 1604 | |
95954743 PA |
1605 | if (!ptid_equal (general_thread, null_ptid) |
1606 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
1607 | gdb_id = general_thread; |
1608 | else | |
1609 | { | |
1610 | thread_ptr = all_threads.head; | |
1611 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1612 | } | |
1613 | ||
95954743 PA |
1614 | sprintf (own_buf, "QC"); |
1615 | own_buf += 2; | |
4b812f4e | 1616 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
1617 | return; |
1618 | } | |
1619 | ||
ce3a066d DJ |
1620 | if (strcmp ("qSymbol::", own_buf) == 0) |
1621 | { | |
d3bbe7a0 PA |
1622 | /* GDB is suggesting new symbols have been loaded. This may |
1623 | mean a new shared library has been detected as loaded, so | |
1624 | take the opportunity to check if breakpoints we think are | |
1625 | inserted, still are. Note that it isn't guaranteed that | |
1626 | we'll see this when a shared library is loaded, and nor will | |
1627 | we see this for unloads (although breakpoints in unloaded | |
1628 | libraries shouldn't trigger), as GDB may not find symbols for | |
1629 | the library at all. We also re-validate breakpoints when we | |
1630 | see a second GDB breakpoint for the same address, and or when | |
1631 | we access breakpoint shadows. */ | |
1632 | validate_breakpoints (); | |
1633 | ||
fa593d66 PA |
1634 | if (target_supports_tracepoints ()) |
1635 | tracepoint_look_up_symbols (); | |
1636 | ||
2d717e4f | 1637 | if (target_running () && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
1638 | (*the_target->look_up_symbols) (); |
1639 | ||
ce3a066d DJ |
1640 | strcpy (own_buf, "OK"); |
1641 | return; | |
1642 | } | |
1643 | ||
db42f210 | 1644 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 1645 | { |
db42f210 | 1646 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 1647 | { |
95954743 PA |
1648 | ptid_t gdb_id; |
1649 | ||
db42f210 PA |
1650 | require_running (own_buf); |
1651 | thread_ptr = all_threads.head; | |
95954743 PA |
1652 | |
1653 | *own_buf++ = 'm'; | |
1654 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1655 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
1656 | thread_ptr = thread_ptr->next; |
1657 | return; | |
1658 | } | |
db42f210 PA |
1659 | |
1660 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 1661 | { |
95954743 PA |
1662 | ptid_t gdb_id; |
1663 | ||
db42f210 PA |
1664 | require_running (own_buf); |
1665 | if (thread_ptr != NULL) | |
1666 | { | |
95954743 PA |
1667 | *own_buf++ = 'm'; |
1668 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1669 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
1670 | thread_ptr = thread_ptr->next; |
1671 | return; | |
1672 | } | |
1673 | else | |
1674 | { | |
1675 | sprintf (own_buf, "l"); | |
1676 | return; | |
1677 | } | |
0d62e5e8 DJ |
1678 | } |
1679 | } | |
aa691b87 | 1680 | |
52fb6437 NS |
1681 | if (the_target->read_offsets != NULL |
1682 | && strcmp ("qOffsets", own_buf) == 0) | |
1683 | { | |
1684 | CORE_ADDR text, data; | |
2d717e4f DJ |
1685 | |
1686 | require_running (own_buf); | |
52fb6437 NS |
1687 | if (the_target->read_offsets (&text, &data)) |
1688 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
1689 | (long)text, (long)data, (long)data); | |
1690 | else | |
1691 | write_enn (own_buf); | |
1b3f6016 | 1692 | |
52fb6437 NS |
1693 | return; |
1694 | } | |
1695 | ||
be2a5f71 DJ |
1696 | /* Protocol features query. */ |
1697 | if (strncmp ("qSupported", own_buf, 10) == 0 | |
1698 | && (own_buf[10] == ':' || own_buf[10] == '\0')) | |
1699 | { | |
95954743 | 1700 | char *p = &own_buf[10]; |
fa593d66 | 1701 | int gdb_supports_qRelocInsn = 0; |
95954743 | 1702 | |
1570b33e L |
1703 | /* Start processing qSupported packet. */ |
1704 | target_process_qsupported (NULL); | |
1705 | ||
95954743 PA |
1706 | /* Process each feature being provided by GDB. The first |
1707 | feature will follow a ':', and latter features will follow | |
1708 | ';'. */ | |
1709 | if (*p == ':') | |
d149dd1d PA |
1710 | { |
1711 | char **qsupported = NULL; | |
1712 | int count = 0; | |
1713 | int i; | |
1714 | ||
1715 | /* Two passes, to avoid nested strtok calls in | |
1716 | target_process_qsupported. */ | |
1717 | for (p = strtok (p + 1, ";"); | |
1718 | p != NULL; | |
1719 | p = strtok (NULL, ";")) | |
1720 | { | |
1721 | count++; | |
1722 | qsupported = xrealloc (qsupported, count * sizeof (char *)); | |
1723 | qsupported[count - 1] = xstrdup (p); | |
1724 | } | |
1725 | ||
1726 | for (i = 0; i < count; i++) | |
1727 | { | |
1728 | p = qsupported[i]; | |
1729 | if (strcmp (p, "multiprocess+") == 0) | |
1730 | { | |
1731 | /* GDB supports and wants multi-process support if | |
1732 | possible. */ | |
1733 | if (target_supports_multi_process ()) | |
1734 | multi_process = 1; | |
1735 | } | |
fa593d66 PA |
1736 | else if (strcmp (p, "qRelocInsn+") == 0) |
1737 | { | |
1738 | /* GDB supports relocate instruction requests. */ | |
1739 | gdb_supports_qRelocInsn = 1; | |
1740 | } | |
d149dd1d PA |
1741 | else |
1742 | target_process_qsupported (p); | |
1743 | ||
1744 | free (p); | |
1745 | } | |
1746 | ||
1747 | free (qsupported); | |
1748 | } | |
95954743 | 1749 | |
9b224c5e PA |
1750 | sprintf (own_buf, |
1751 | "PacketSize=%x;QPassSignals+;QProgramSignals+", | |
1752 | PBUFSIZ - 1); | |
0876f84a | 1753 | |
2268b414 | 1754 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
1755 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
1756 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
1757 | else |
1758 | { | |
1759 | /* We do not have any hook to indicate whether the non-SVR4 target | |
1760 | backend supports qXfer:libraries:read, so always report it. */ | |
1761 | strcat (own_buf, ";qXfer:libraries:read+"); | |
1762 | } | |
255e7678 | 1763 | |
0876f84a | 1764 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 1765 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 1766 | |
0e7f50da UW |
1767 | if (the_target->qxfer_spu != NULL) |
1768 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 1769 | |
4aa995e1 PA |
1770 | if (the_target->qxfer_siginfo != NULL) |
1771 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
1772 | ||
78d85199 YQ |
1773 | if (the_target->read_loadmap != NULL) |
1774 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
1775 | ||
221c031f UW |
1776 | /* We always report qXfer:features:read, as targets may |
1777 | install XML files on a subsequent call to arch_setup. | |
1778 | If we reported to GDB on startup that we don't support | |
1779 | qXfer:feature:read at all, we will never be re-queried. */ | |
1780 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 1781 | |
a6f3e723 SL |
1782 | if (transport_is_reliable) |
1783 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
1784 | |
1785 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 1786 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 1787 | |
cf8fd78b PA |
1788 | if (target_supports_multi_process ()) |
1789 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 1790 | |
bd99dc85 PA |
1791 | if (target_supports_non_stop ()) |
1792 | strcat (own_buf, ";QNonStop+"); | |
1793 | ||
03583c20 UW |
1794 | if (target_supports_disable_randomization ()) |
1795 | strcat (own_buf, ";QDisableRandomization+"); | |
1796 | ||
dc146f7c VP |
1797 | strcat (own_buf, ";qXfer:threads:read+"); |
1798 | ||
219f2f23 PA |
1799 | if (target_supports_tracepoints ()) |
1800 | { | |
1801 | strcat (own_buf, ";ConditionalTracepoints+"); | |
1802 | strcat (own_buf, ";TraceStateVariables+"); | |
1803 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 1804 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
1805 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
1806 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 1807 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 1808 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 1809 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 1810 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 1811 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 1812 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 1813 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
1814 | } |
1815 | ||
d3ce09f5 | 1816 | /* Support target-side breakpoint conditions and commands. */ |
9f3a5c85 | 1817 | strcat (own_buf, ";ConditionalBreakpoints+"); |
d3ce09f5 | 1818 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 1819 | |
d1feda86 YQ |
1820 | if (target_supports_agent ()) |
1821 | strcat (own_buf, ";QAgent+"); | |
1822 | ||
9accd112 MM |
1823 | if (target_supports_btrace ()) |
1824 | { | |
1825 | strcat (own_buf, ";Qbtrace:bts+"); | |
1826 | strcat (own_buf, ";Qbtrace:off+"); | |
1827 | strcat (own_buf, ";qXfer:btrace:read+"); | |
1828 | } | |
1829 | ||
be2a5f71 DJ |
1830 | return; |
1831 | } | |
1832 | ||
dae5f5cf DJ |
1833 | /* Thread-local storage support. */ |
1834 | if (the_target->get_tls_address != NULL | |
1835 | && strncmp ("qGetTLSAddr:", own_buf, 12) == 0) | |
1836 | { | |
1837 | char *p = own_buf + 12; | |
5b1c542e | 1838 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 1839 | int i, err; |
95954743 | 1840 | ptid_t ptid = null_ptid; |
dae5f5cf | 1841 | |
2d717e4f DJ |
1842 | require_running (own_buf); |
1843 | ||
dae5f5cf DJ |
1844 | for (i = 0; i < 3; i++) |
1845 | { | |
1846 | char *p2; | |
1847 | int len; | |
1848 | ||
1849 | if (p == NULL) | |
1850 | break; | |
1851 | ||
1852 | p2 = strchr (p, ','); | |
1853 | if (p2) | |
1854 | { | |
1855 | len = p2 - p; | |
1856 | p2++; | |
1857 | } | |
1858 | else | |
1859 | { | |
1860 | len = strlen (p); | |
1861 | p2 = NULL; | |
1862 | } | |
1863 | ||
5b1c542e | 1864 | if (i == 0) |
95954743 | 1865 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
1866 | else |
1867 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
1868 | p = p2; |
1869 | } | |
1870 | ||
1871 | if (p != NULL || i < 3) | |
1872 | err = 1; | |
1873 | else | |
1874 | { | |
e09875d4 | 1875 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
1876 | |
1877 | if (thread == NULL) | |
1878 | err = 2; | |
1879 | else | |
5b1c542e | 1880 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
1881 | &address); |
1882 | } | |
1883 | ||
1884 | if (err == 0) | |
1885 | { | |
c6f46ca0 | 1886 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
1887 | return; |
1888 | } | |
1889 | else if (err > 0) | |
1890 | { | |
1891 | write_enn (own_buf); | |
1892 | return; | |
1893 | } | |
1894 | ||
1895 | /* Otherwise, pretend we do not understand this packet. */ | |
1896 | } | |
1897 | ||
711e434b PM |
1898 | /* Windows OS Thread Information Block address support. */ |
1899 | if (the_target->get_tib_address != NULL | |
1900 | && strncmp ("qGetTIBAddr:", own_buf, 12) == 0) | |
1901 | { | |
1902 | char *annex; | |
1903 | int n; | |
1904 | CORE_ADDR tlb; | |
1905 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
1906 | ||
1907 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
1908 | if (n == 1) | |
1909 | { | |
c6f46ca0 | 1910 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
1911 | return; |
1912 | } | |
1913 | else if (n == 0) | |
1914 | { | |
1915 | write_enn (own_buf); | |
1916 | return; | |
1917 | } | |
1918 | return; | |
1919 | } | |
1920 | ||
c74d0ad8 DJ |
1921 | /* Handle "monitor" commands. */ |
1922 | if (strncmp ("qRcmd,", own_buf, 6) == 0) | |
1923 | { | |
aef93bd7 | 1924 | char *mon = malloc (PBUFSIZ); |
c74d0ad8 DJ |
1925 | int len = strlen (own_buf + 6); |
1926 | ||
aef93bd7 DE |
1927 | if (mon == NULL) |
1928 | { | |
1929 | write_enn (own_buf); | |
1930 | return; | |
1931 | } | |
1932 | ||
d41b6bb4 | 1933 | if ((len % 2) != 0 || unhexify (mon, own_buf + 6, len / 2) != len / 2) |
c74d0ad8 DJ |
1934 | { |
1935 | write_enn (own_buf); | |
1936 | free (mon); | |
1937 | return; | |
1938 | } | |
1939 | mon[len / 2] = '\0'; | |
1940 | ||
1941 | write_ok (own_buf); | |
1942 | ||
cdbfd419 PP |
1943 | if (the_target->handle_monitor_command == NULL |
1944 | || (*the_target->handle_monitor_command) (mon) == 0) | |
1945 | /* Default processing. */ | |
d73f2619 | 1946 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
1947 | |
1948 | free (mon); | |
1949 | return; | |
1950 | } | |
1951 | ||
493e2a69 MS |
1952 | if (strncmp ("qSearch:memory:", own_buf, |
1953 | sizeof ("qSearch:memory:") - 1) == 0) | |
08388c79 DE |
1954 | { |
1955 | require_running (own_buf); | |
1956 | handle_search_memory (own_buf, packet_len); | |
1957 | return; | |
1958 | } | |
1959 | ||
95954743 PA |
1960 | if (strcmp (own_buf, "qAttached") == 0 |
1961 | || strncmp (own_buf, "qAttached:", sizeof ("qAttached:") - 1) == 0) | |
0b16c5cf | 1962 | { |
95954743 PA |
1963 | struct process_info *process; |
1964 | ||
1965 | if (own_buf[sizeof ("qAttached") - 1]) | |
1966 | { | |
1967 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
1968 | process = (struct process_info *) | |
1969 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
1970 | } | |
1971 | else | |
1972 | { | |
1973 | require_running (own_buf); | |
1974 | process = current_process (); | |
1975 | } | |
1976 | ||
1977 | if (process == NULL) | |
1978 | { | |
1979 | write_enn (own_buf); | |
1980 | return; | |
1981 | } | |
1982 | ||
1983 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
1984 | return; |
1985 | } | |
1986 | ||
30ba68cb MS |
1987 | if (strncmp ("qCRC:", own_buf, 5) == 0) |
1988 | { | |
1989 | /* CRC check (compare-section). */ | |
1990 | char *comma; | |
aca22551 | 1991 | ULONGEST base; |
30ba68cb MS |
1992 | int len; |
1993 | unsigned long long crc; | |
1994 | ||
1995 | require_running (own_buf); | |
aca22551 | 1996 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
1997 | if (*comma++ != ',') |
1998 | { | |
1999 | write_enn (own_buf); | |
2000 | return; | |
2001 | } | |
2002 | len = strtoul (comma, NULL, 16); | |
2003 | crc = crc32 (base, len, 0xffffffff); | |
2004 | /* Check for memory failure. */ | |
2005 | if (crc == (unsigned long long) -1) | |
2006 | { | |
2007 | write_enn (own_buf); | |
2008 | return; | |
2009 | } | |
2010 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2011 | return; | |
2012 | } | |
2013 | ||
d08aafef PA |
2014 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2015 | return; | |
2016 | ||
219f2f23 PA |
2017 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2018 | return; | |
2019 | ||
ce3a066d DJ |
2020 | /* Otherwise we didn't know what packet it was. Say we didn't |
2021 | understand it. */ | |
2022 | own_buf[0] = 0; | |
2023 | } | |
2024 | ||
ce1a5b52 | 2025 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2026 | static void resume (struct thread_resume *actions, size_t n); |
2027 | ||
2028 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns | |
2029 | true if CALLBACK returns true. Returns false if no matching thread | |
2030 | is found or CALLBACK results false. */ | |
2031 | ||
2032 | static int | |
2033 | visit_actioned_threads (const struct thread_resume *actions, | |
2034 | size_t num_actions, | |
2035 | int (*callback) (const struct thread_resume *, | |
2036 | struct thread_info *)) | |
2037 | { | |
2038 | struct inferior_list_entry *entry; | |
2039 | ||
2040 | for (entry = all_threads.head; entry != NULL; entry = entry->next) | |
2041 | { | |
2042 | size_t i; | |
2043 | ||
2044 | for (i = 0; i < num_actions; i++) | |
2045 | { | |
2046 | const struct thread_resume *action = &actions[i]; | |
2047 | ||
2048 | if (ptid_equal (action->thread, minus_one_ptid) | |
2049 | || ptid_equal (action->thread, entry->id) | |
2050 | || ((ptid_get_pid (action->thread) | |
2051 | == ptid_get_pid (entry->id)) | |
2052 | && ptid_get_lwp (action->thread) == -1)) | |
2053 | { | |
2054 | struct thread_info *thread = (struct thread_info *) entry; | |
2055 | ||
2056 | if ((*callback) (action, thread)) | |
2057 | return 1; | |
2058 | } | |
2059 | } | |
2060 | } | |
2061 | ||
2062 | return 0; | |
2063 | } | |
2064 | ||
2065 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2066 | status to report, report it now. */ | |
2067 | ||
2068 | static int | |
2069 | handle_pending_status (const struct thread_resume *resumption, | |
2070 | struct thread_info *thread) | |
2071 | { | |
2072 | if (thread->status_pending_p) | |
2073 | { | |
2074 | thread->status_pending_p = 0; | |
2075 | ||
2076 | last_status = thread->last_status; | |
2077 | last_ptid = thread->entry.id; | |
2078 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2079 | return 1; | |
2080 | } | |
2081 | return 0; | |
2082 | } | |
ce1a5b52 | 2083 | |
64386c31 DJ |
2084 | /* Parse vCont packets. */ |
2085 | void | |
5b1c542e | 2086 | handle_v_cont (char *own_buf) |
64386c31 DJ |
2087 | { |
2088 | char *p, *q; | |
2089 | int n = 0, i = 0; | |
2bd7c093 | 2090 | struct thread_resume *resume_info; |
95954743 | 2091 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
2092 | |
2093 | /* Count the number of semicolons in the packet. There should be one | |
2094 | for every action. */ | |
2095 | p = &own_buf[5]; | |
2096 | while (p) | |
2097 | { | |
2098 | n++; | |
2099 | p++; | |
2100 | p = strchr (p, ';'); | |
2101 | } | |
2bd7c093 PA |
2102 | |
2103 | resume_info = malloc (n * sizeof (resume_info[0])); | |
aef93bd7 DE |
2104 | if (resume_info == NULL) |
2105 | goto err; | |
64386c31 | 2106 | |
64386c31 | 2107 | p = &own_buf[5]; |
64386c31 DJ |
2108 | while (*p) |
2109 | { | |
2110 | p++; | |
2111 | ||
c2d6af84 PA |
2112 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2113 | ||
64386c31 | 2114 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2115 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2116 | else if (p[0] == 'r') |
2117 | resume_info[i].kind = resume_step; | |
64386c31 | 2118 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2119 | resume_info[i].kind = resume_continue; |
2120 | else if (p[0] == 't') | |
2121 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2122 | else |
2123 | goto err; | |
2124 | ||
2125 | if (p[0] == 'S' || p[0] == 'C') | |
2126 | { | |
2127 | int sig; | |
2128 | sig = strtol (p + 1, &q, 16); | |
2129 | if (p == q) | |
2130 | goto err; | |
2131 | p = q; | |
2132 | ||
2ea28649 | 2133 | if (!gdb_signal_to_host_p (sig)) |
64386c31 | 2134 | goto err; |
2ea28649 | 2135 | resume_info[i].sig = gdb_signal_to_host (sig); |
64386c31 | 2136 | } |
c2d6af84 PA |
2137 | else if (p[0] == 'r') |
2138 | { | |
6740dc9c | 2139 | ULONGEST addr; |
c2d6af84 | 2140 | |
6740dc9c PA |
2141 | p = unpack_varlen_hex (p + 1, &addr); |
2142 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2143 | |
6740dc9c PA |
2144 | if (*p != ',') |
2145 | goto err; | |
c2d6af84 | 2146 | |
6740dc9c PA |
2147 | p = unpack_varlen_hex (p + 1, &addr); |
2148 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2149 | } |
64386c31 DJ |
2150 | else |
2151 | { | |
64386c31 DJ |
2152 | p = p + 1; |
2153 | } | |
2154 | ||
2155 | if (p[0] == 0) | |
2156 | { | |
95954743 | 2157 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2158 | default_action = resume_info[i]; |
2159 | ||
2160 | /* Note: we don't increment i here, we'll overwrite this entry | |
2161 | the next time through. */ | |
2162 | } | |
2163 | else if (p[0] == ':') | |
2164 | { | |
95954743 | 2165 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2166 | |
64386c31 DJ |
2167 | if (p == q) |
2168 | goto err; | |
2169 | p = q; | |
2170 | if (p[0] != ';' && p[0] != 0) | |
2171 | goto err; | |
2172 | ||
95954743 | 2173 | resume_info[i].thread = ptid; |
a06660f7 | 2174 | |
64386c31 DJ |
2175 | i++; |
2176 | } | |
2177 | } | |
2178 | ||
2bd7c093 PA |
2179 | if (i < n) |
2180 | resume_info[i] = default_action; | |
64386c31 | 2181 | |
122f36ef PA |
2182 | /* `cont_thread' is still used in occasional places in the backend, |
2183 | to implement single-thread scheduler-locking. Doesn't make sense | |
0c9070b3 YQ |
2184 | to set it if we see a stop request, or a wildcard action (one |
2185 | with '-1' (all threads), or 'pPID.-1' (all threads of PID)). */ | |
bd99dc85 | 2186 | if (n == 1 |
122f36ef PA |
2187 | && !(ptid_equal (resume_info[0].thread, minus_one_ptid) |
2188 | || ptid_get_lwp (resume_info[0].thread) == -1) | |
bd99dc85 | 2189 | && resume_info[0].kind != resume_stop) |
64386c31 DJ |
2190 | cont_thread = resume_info[0].thread; |
2191 | else | |
95954743 | 2192 | cont_thread = minus_one_ptid; |
dc3f8883 | 2193 | set_desired_inferior (0); |
64386c31 | 2194 | |
b7ea362b PA |
2195 | resume (resume_info, n); |
2196 | free (resume_info); | |
2197 | return; | |
2198 | ||
2199 | err: | |
2200 | write_enn (own_buf); | |
2201 | free (resume_info); | |
2202 | return; | |
2203 | } | |
2204 | ||
2205 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2206 | ||
2207 | static void | |
2208 | resume (struct thread_resume *actions, size_t num_actions) | |
2209 | { | |
bd99dc85 | 2210 | if (!non_stop) |
b7ea362b PA |
2211 | { |
2212 | /* Check if among the threads that GDB wants actioned, there's | |
2213 | one with a pending status to report. If so, skip actually | |
2214 | resuming/stopping and report the pending event | |
2215 | immediately. */ | |
2216 | if (visit_actioned_threads (actions, num_actions, handle_pending_status)) | |
2217 | return; | |
bd99dc85 | 2218 | |
b7ea362b PA |
2219 | enable_async_io (); |
2220 | } | |
64386c31 | 2221 | |
b7ea362b | 2222 | (*the_target->resume) (actions, num_actions); |
64386c31 | 2223 | |
bd99dc85 PA |
2224 | if (non_stop) |
2225 | write_ok (own_buf); | |
2226 | else | |
2227 | { | |
95954743 | 2228 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 2229 | |
d20a8ad9 PA |
2230 | if (last_status.kind != TARGET_WAITKIND_EXITED |
2231 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
2232 | current_inferior->last_status = last_status; | |
2233 | ||
ce1a5b52 PA |
2234 | /* From the client's perspective, all-stop mode always stops all |
2235 | threads implicitly (and the target backend has already done | |
2236 | so by now). Tag all threads as "want-stopped", so we don't | |
2237 | resume them implicitly without the client telling us to. */ | |
2238 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
2239 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2240 | disable_async_io (); | |
6bd31874 JB |
2241 | |
2242 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2243 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2244 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 | 2245 | } |
64386c31 DJ |
2246 | } |
2247 | ||
2d717e4f DJ |
2248 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
2249 | int | |
5b1c542e | 2250 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
2251 | { |
2252 | int pid; | |
2253 | ||
2254 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2255 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2256 | { |
aeba519e PA |
2257 | /* Don't report shared library events after attaching, even if |
2258 | some libraries are preloaded. GDB will always poll the | |
2259 | library list. Avoids the "stopped by shared library event" | |
2260 | notice on the GDB side. */ | |
2261 | dlls_changed = 0; | |
bd99dc85 PA |
2262 | |
2263 | if (non_stop) | |
2264 | { | |
2265 | /* In non-stop, we don't send a resume reply. Stop events | |
2266 | will follow up using the normal notification | |
2267 | mechanism. */ | |
2268 | write_ok (own_buf); | |
2269 | } | |
2270 | else | |
2271 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2272 | ||
2d717e4f DJ |
2273 | return 1; |
2274 | } | |
2275 | else | |
2276 | { | |
2277 | write_enn (own_buf); | |
2278 | return 0; | |
2279 | } | |
2280 | } | |
2281 | ||
2282 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2283 | static int | |
5b1c542e | 2284 | handle_v_run (char *own_buf) |
2d717e4f | 2285 | { |
aef93bd7 | 2286 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
2287 | int i, new_argc; |
2288 | ||
2289 | new_argc = 0; | |
2290 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2291 | { | |
2292 | p++; | |
2293 | new_argc++; | |
2294 | } | |
2295 | ||
aef93bd7 DE |
2296 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
2297 | if (new_argv == NULL) | |
2298 | { | |
2299 | write_enn (own_buf); | |
2300 | return 0; | |
2301 | } | |
2302 | ||
2d717e4f DJ |
2303 | i = 0; |
2304 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
2305 | { | |
2306 | next_p = strchr (p, ';'); | |
2307 | if (next_p == NULL) | |
2308 | next_p = p + strlen (p); | |
2309 | ||
2310 | if (i == 0 && p == next_p) | |
2311 | new_argv[i] = NULL; | |
2312 | else | |
2313 | { | |
aef93bd7 | 2314 | /* FIXME: Fail request if out of memory instead of dying. */ |
bca929d3 | 2315 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
2d717e4f DJ |
2316 | unhexify (new_argv[i], p, (next_p - p) / 2); |
2317 | new_argv[i][(next_p - p) / 2] = '\0'; | |
2318 | } | |
2319 | ||
2320 | if (*next_p) | |
2321 | next_p++; | |
2322 | i++; | |
2323 | } | |
2324 | new_argv[i] = NULL; | |
2325 | ||
2326 | if (new_argv[0] == NULL) | |
2327 | { | |
f142445f DJ |
2328 | /* GDB didn't specify a program to run. Use the program from the |
2329 | last run with the new argument list. */ | |
9b710a42 | 2330 | |
2d717e4f DJ |
2331 | if (program_argv == NULL) |
2332 | { | |
2333 | write_enn (own_buf); | |
b2c04452 | 2334 | freeargv (new_argv); |
2d717e4f DJ |
2335 | return 0; |
2336 | } | |
2337 | ||
aef93bd7 DE |
2338 | new_argv[0] = strdup (program_argv[0]); |
2339 | if (new_argv[0] == NULL) | |
2340 | { | |
aef93bd7 | 2341 | write_enn (own_buf); |
b2c04452 | 2342 | freeargv (new_argv); |
aef93bd7 | 2343 | return 0; |
1b3f6016 | 2344 | } |
2d717e4f | 2345 | } |
f142445f | 2346 | |
aef93bd7 DE |
2347 | /* Free the old argv and install the new one. */ |
2348 | freeargv (program_argv); | |
f142445f | 2349 | program_argv = new_argv; |
2d717e4f | 2350 | |
5b1c542e PA |
2351 | start_inferior (program_argv); |
2352 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 2353 | { |
5b1c542e | 2354 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
2355 | |
2356 | /* In non-stop, sending a resume reply doesn't set the general | |
2357 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
2358 | query which is the main thread of the new inferior. */ | |
2359 | if (non_stop) | |
2360 | general_thread = last_ptid; | |
2361 | ||
2d717e4f DJ |
2362 | return 1; |
2363 | } | |
2364 | else | |
2365 | { | |
2366 | write_enn (own_buf); | |
2367 | return 0; | |
2368 | } | |
2369 | } | |
2370 | ||
95954743 PA |
2371 | /* Kill process. Return 1 if successful, 0 if failure. */ |
2372 | int | |
2373 | handle_v_kill (char *own_buf) | |
2374 | { | |
2375 | int pid; | |
2376 | char *p = &own_buf[6]; | |
0f54c268 PM |
2377 | if (multi_process) |
2378 | pid = strtol (p, NULL, 16); | |
2379 | else | |
2380 | pid = signal_pid; | |
95954743 PA |
2381 | if (pid != 0 && kill_inferior (pid) == 0) |
2382 | { | |
2383 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
a493e3e2 | 2384 | last_status.value.sig = GDB_SIGNAL_KILL; |
95954743 PA |
2385 | last_ptid = pid_to_ptid (pid); |
2386 | discard_queued_stop_replies (pid); | |
2387 | write_ok (own_buf); | |
2388 | return 1; | |
2389 | } | |
2390 | else | |
2391 | { | |
2392 | write_enn (own_buf); | |
2393 | return 0; | |
2394 | } | |
2395 | } | |
2396 | ||
64386c31 DJ |
2397 | /* Handle all of the extended 'v' packets. */ |
2398 | void | |
5b1c542e | 2399 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2400 | { |
db42f210 | 2401 | if (!disable_packet_vCont) |
64386c31 | 2402 | { |
db42f210 PA |
2403 | if (strncmp (own_buf, "vCont;", 6) == 0) |
2404 | { | |
2405 | require_running (own_buf); | |
5b1c542e | 2406 | handle_v_cont (own_buf); |
db42f210 PA |
2407 | return; |
2408 | } | |
64386c31 | 2409 | |
db42f210 PA |
2410 | if (strncmp (own_buf, "vCont?", 6) == 0) |
2411 | { | |
bd99dc85 | 2412 | strcpy (own_buf, "vCont;c;C;s;S;t"); |
c2d6af84 PA |
2413 | if (target_supports_range_stepping ()) |
2414 | { | |
2415 | own_buf = own_buf + strlen (own_buf); | |
2416 | strcpy (own_buf, ";r"); | |
2417 | } | |
db42f210 PA |
2418 | return; |
2419 | } | |
64386c31 DJ |
2420 | } |
2421 | ||
a6b151f1 DJ |
2422 | if (strncmp (own_buf, "vFile:", 6) == 0 |
2423 | && handle_vFile (own_buf, packet_len, new_packet_len)) | |
2424 | return; | |
2425 | ||
2d717e4f DJ |
2426 | if (strncmp (own_buf, "vAttach;", 8) == 0) |
2427 | { | |
901f9912 | 2428 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2429 | { |
fd96d250 PA |
2430 | fprintf (stderr, "Already debugging a process\n"); |
2431 | write_enn (own_buf); | |
2432 | return; | |
2d717e4f | 2433 | } |
5b1c542e | 2434 | handle_v_attach (own_buf); |
2d717e4f DJ |
2435 | return; |
2436 | } | |
2437 | ||
2438 | if (strncmp (own_buf, "vRun;", 5) == 0) | |
2439 | { | |
901f9912 | 2440 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2441 | { |
fd96d250 PA |
2442 | fprintf (stderr, "Already debugging a process\n"); |
2443 | write_enn (own_buf); | |
2444 | return; | |
2d717e4f | 2445 | } |
5b1c542e | 2446 | handle_v_run (own_buf); |
2d717e4f DJ |
2447 | return; |
2448 | } | |
2449 | ||
95954743 PA |
2450 | if (strncmp (own_buf, "vKill;", 6) == 0) |
2451 | { | |
2452 | if (!target_running ()) | |
2453 | { | |
2454 | fprintf (stderr, "No process to kill\n"); | |
2455 | write_enn (own_buf); | |
2456 | return; | |
2457 | } | |
2458 | handle_v_kill (own_buf); | |
2459 | return; | |
2460 | } | |
2461 | ||
14a00470 YQ |
2462 | if (handle_notif_ack (own_buf, packet_len)) |
2463 | return; | |
bd99dc85 | 2464 | |
64386c31 DJ |
2465 | /* Otherwise we didn't know what packet it was. Say we didn't |
2466 | understand it. */ | |
2467 | own_buf[0] = 0; | |
2468 | return; | |
2469 | } | |
2470 | ||
bd99dc85 PA |
2471 | /* Resume inferior and wait for another event. In non-stop mode, |
2472 | don't really wait here, but return immediatelly to the event | |
2473 | loop. */ | |
1fd7cdc2 | 2474 | static void |
5b1c542e | 2475 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
2476 | { |
2477 | struct thread_resume resume_info[2]; | |
2478 | int n = 0; | |
2bd7c093 | 2479 | int valid_cont_thread; |
a20d5e98 DJ |
2480 | |
2481 | set_desired_inferior (0); | |
64386c31 | 2482 | |
95954743 PA |
2483 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
2484 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
2485 | |
2486 | if (step || sig || valid_cont_thread) | |
64386c31 | 2487 | { |
fbd5db48 | 2488 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
2489 | if (step) |
2490 | resume_info[0].kind = resume_step; | |
2491 | else | |
2492 | resume_info[0].kind = resume_continue; | |
64386c31 | 2493 | resume_info[0].sig = sig; |
64386c31 DJ |
2494 | n++; |
2495 | } | |
2bd7c093 PA |
2496 | |
2497 | if (!valid_cont_thread) | |
2498 | { | |
95954743 | 2499 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 2500 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
2501 | resume_info[n].sig = 0; |
2502 | n++; | |
2503 | } | |
64386c31 | 2504 | |
b7ea362b | 2505 | resume (resume_info, n); |
bd99dc85 PA |
2506 | } |
2507 | ||
2508 | /* Callback for for_each_inferior. Make a new stop reply for each | |
2509 | stopped thread. */ | |
2510 | ||
95954743 PA |
2511 | static int |
2512 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 2513 | { |
8336d594 | 2514 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 2515 | |
8336d594 PA |
2516 | /* For now, assume targets that don't have this callback also don't |
2517 | manage the thread's last_status field. */ | |
2518 | if (the_target->thread_stopped == NULL) | |
95954743 | 2519 | { |
14a00470 YQ |
2520 | struct vstop_notif *new_notif = xmalloc (sizeof (*new_notif)); |
2521 | ||
2522 | new_notif->ptid = entry->id; | |
2523 | new_notif->status = thread->last_status; | |
8336d594 PA |
2524 | /* Pass the last stop reply back to GDB, but don't notify |
2525 | yet. */ | |
14a00470 YQ |
2526 | notif_event_enque (¬if_stop, |
2527 | (struct notif_event *) new_notif); | |
8336d594 PA |
2528 | } |
2529 | else | |
2530 | { | |
2531 | if (thread_stopped (thread)) | |
2532 | { | |
2533 | if (debug_threads) | |
3360c0bf LM |
2534 | { |
2535 | char *status_string | |
2536 | = target_waitstatus_to_string (&thread->last_status); | |
2537 | ||
2538 | fprintf (stderr, | |
2539 | "Reporting thread %s as already stopped with %s\n", | |
2540 | target_pid_to_str (entry->id), | |
2541 | status_string); | |
2542 | ||
2543 | xfree (status_string); | |
2544 | } | |
8336d594 | 2545 | |
d20a8ad9 PA |
2546 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
2547 | ||
8336d594 PA |
2548 | /* Pass the last stop reply back to GDB, but don't notify |
2549 | yet. */ | |
2550 | queue_stop_reply (entry->id, &thread->last_status); | |
2551 | } | |
95954743 PA |
2552 | } |
2553 | ||
2554 | return 0; | |
64386c31 DJ |
2555 | } |
2556 | ||
ce1a5b52 PA |
2557 | /* Set this inferior threads's state as "want-stopped". We won't |
2558 | resume this thread until the client gives us another action for | |
2559 | it. */ | |
8336d594 PA |
2560 | |
2561 | static void | |
2562 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
2563 | { | |
2564 | struct thread_info *thread = (struct thread_info *) entry; | |
2565 | ||
2566 | thread->last_resume_kind = resume_stop; | |
2567 | ||
2568 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
2569 | { | |
ce1a5b52 PA |
2570 | /* Most threads are stopped implicitly (all-stop); tag that with |
2571 | signal 0. */ | |
8336d594 | 2572 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 2573 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
2574 | } |
2575 | } | |
2576 | ||
2577 | /* Set all threads' states as "want-stopped". */ | |
2578 | ||
2579 | static void | |
2580 | gdb_wants_all_threads_stopped (void) | |
2581 | { | |
2582 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
2583 | } | |
2584 | ||
2585 | /* Clear the gdb_detached flag of every process. */ | |
2586 | ||
2587 | static void | |
2588 | gdb_reattached_process (struct inferior_list_entry *entry) | |
2589 | { | |
2590 | struct process_info *process = (struct process_info *) entry; | |
2591 | ||
2592 | process->gdb_detached = 0; | |
2593 | } | |
2594 | ||
b7ea362b PA |
2595 | /* Callback for for_each_inferior. Clear the thread's pending status |
2596 | flag. */ | |
2597 | ||
2598 | static void | |
2599 | clear_pending_status_callback (struct inferior_list_entry *entry) | |
2600 | { | |
2601 | struct thread_info *thread = (struct thread_info *) entry; | |
2602 | ||
2603 | thread->status_pending_p = 0; | |
2604 | } | |
2605 | ||
2606 | /* Callback for for_each_inferior. If the thread is stopped with an | |
2607 | interesting event, mark it as having a pending event. */ | |
2608 | ||
2609 | static void | |
2610 | set_pending_status_callback (struct inferior_list_entry *entry) | |
2611 | { | |
2612 | struct thread_info *thread = (struct thread_info *) entry; | |
2613 | ||
2614 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED | |
2615 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
2616 | /* A breakpoint, watchpoint or finished step from a previous | |
2617 | GDB run isn't considered interesting for a new GDB run. | |
2618 | If we left those pending, the new GDB could consider them | |
2619 | random SIGTRAPs. This leaves out real async traps. We'd | |
2620 | have to peek into the (target-specific) siginfo to | |
2621 | distinguish those. */ | |
2622 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
2623 | thread->status_pending_p = 1; | |
2624 | } | |
2625 | ||
2626 | /* Callback for find_inferior. Return true if ENTRY (a thread) has a | |
2627 | pending status to report to GDB. */ | |
2628 | ||
2629 | static int | |
2630 | find_status_pending_thread_callback (struct inferior_list_entry *entry, void *data) | |
2631 | { | |
2632 | struct thread_info *thread = (struct thread_info *) entry; | |
2633 | ||
2634 | return thread->status_pending_p; | |
2635 | } | |
2636 | ||
5b1c542e PA |
2637 | /* Status handler for the '?' packet. */ |
2638 | ||
2639 | static void | |
2640 | handle_status (char *own_buf) | |
2641 | { | |
8336d594 PA |
2642 | /* GDB is connected, don't forward events to the target anymore. */ |
2643 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
2644 | |
2645 | /* In non-stop mode, we must send a stop reply for each stopped | |
2646 | thread. In all-stop mode, just send one for the first stopped | |
2647 | thread we find. */ | |
2648 | ||
2649 | if (non_stop) | |
2650 | { | |
8336d594 | 2651 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); |
bd99dc85 PA |
2652 | |
2653 | /* The first is sent immediatly. OK is sent if there is no | |
2654 | stopped thread, which is the same handling of the vStopped | |
2655 | packet (by design). */ | |
14a00470 | 2656 | notif_write_event (¬if_stop, own_buf); |
bd99dc85 | 2657 | } |
5b1c542e | 2658 | else |
bd99dc85 | 2659 | { |
b7ea362b PA |
2660 | struct inferior_list_entry *thread = NULL; |
2661 | ||
7984d532 | 2662 | pause_all (0); |
fa593d66 | 2663 | stabilize_threads (); |
8336d594 PA |
2664 | gdb_wants_all_threads_stopped (); |
2665 | ||
b7ea362b PA |
2666 | /* We can only report one status, but we might be coming out of |
2667 | non-stop -- if more than one thread is stopped with | |
2668 | interesting events, leave events for the threads we're not | |
2669 | reporting now pending. They'll be reported the next time the | |
2670 | threads are resumed. Start by marking all interesting events | |
2671 | as pending. */ | |
2672 | for_each_inferior (&all_threads, set_pending_status_callback); | |
2673 | ||
2674 | /* Prefer the last thread that reported an event to GDB (even if | |
2675 | that was a GDB_SIGNAL_TRAP). */ | |
2676 | if (last_status.kind != TARGET_WAITKIND_IGNORE | |
2677 | && last_status.kind != TARGET_WAITKIND_EXITED | |
2678 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
2679 | thread = find_inferior_id (&all_threads, last_ptid); | |
2680 | ||
2681 | /* If the last event thread is not found for some reason, look | |
2682 | for some other thread that might have an event to report. */ | |
2683 | if (thread == NULL) | |
2684 | thread = find_inferior (&all_threads, | |
2685 | find_status_pending_thread_callback, NULL); | |
2686 | ||
2687 | /* If we're still out of luck, simply pick the first thread in | |
2688 | the thread list. */ | |
2689 | if (thread == NULL) | |
2690 | thread = all_threads.head; | |
2691 | ||
2692 | if (thread != NULL) | |
8336d594 | 2693 | { |
b7ea362b PA |
2694 | struct thread_info *tp = (struct thread_info *) thread; |
2695 | ||
2696 | /* We're reporting this event, so it's no longer | |
2697 | pending. */ | |
2698 | tp->status_pending_p = 0; | |
2699 | ||
2700 | /* GDB assumes the current thread is the thread we're | |
2701 | reporting the status for. */ | |
2702 | general_thread = thread->id; | |
2703 | set_desired_inferior (1); | |
8336d594 | 2704 | |
b7ea362b PA |
2705 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
2706 | prepare_resume_reply (own_buf, tp->entry.id, &tp->last_status); | |
8336d594 | 2707 | } |
bd99dc85 PA |
2708 | else |
2709 | strcpy (own_buf, "W00"); | |
2710 | } | |
5b1c542e PA |
2711 | } |
2712 | ||
dd24457d DJ |
2713 | static void |
2714 | gdbserver_version (void) | |
2715 | { | |
c16158bc | 2716 | printf ("GNU gdbserver %s%s\n" |
28498c42 | 2717 | "Copyright (C) 2014 Free Software Foundation, Inc.\n" |
493e2a69 MS |
2718 | "gdbserver is free software, covered by the " |
2719 | "GNU General Public License.\n" | |
dd24457d | 2720 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 2721 | PKGVERSION, version, host_name); |
dd24457d DJ |
2722 | } |
2723 | ||
0bc68c49 | 2724 | static void |
c16158bc | 2725 | gdbserver_usage (FILE *stream) |
0bc68c49 | 2726 | { |
c16158bc JM |
2727 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
2728 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
2729 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
2730 | "\n" | |
2731 | "COMM may either be a tty device (for serial debugging), or \n" | |
2732 | "HOST:PORT to listen for a TCP connection.\n" | |
2733 | "\n" | |
2734 | "Options:\n" | |
62709adf PA |
2735 | " --debug Enable general debugging output.\n" |
2736 | " --remote-debug Enable remote protocol debugging output.\n" | |
2737 | " --version Display version information and exit.\n" | |
03f2bd59 JK |
2738 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" |
2739 | " --once Exit after the first connection has " | |
2740 | "closed.\n"); | |
c16158bc JM |
2741 | if (REPORT_BUGS_TO[0] && stream == stdout) |
2742 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
2743 | } |
2744 | ||
db42f210 PA |
2745 | static void |
2746 | gdbserver_show_disableable (FILE *stream) | |
2747 | { | |
2748 | fprintf (stream, "Disableable packets:\n" | |
2749 | " vCont \tAll vCont packets\n" | |
2750 | " qC \tQuerying the current thread\n" | |
2751 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
2752 | " Tthread \tPassing the thread specifier in the " |
2753 | "T stop reply packet\n" | |
db42f210 PA |
2754 | " threads \tAll of the above\n"); |
2755 | } | |
2756 | ||
2757 | ||
2d717e4f DJ |
2758 | #undef require_running |
2759 | #define require_running(BUF) \ | |
2760 | if (!target_running ()) \ | |
2761 | { \ | |
2762 | write_enn (BUF); \ | |
2763 | break; \ | |
2764 | } | |
2765 | ||
95954743 PA |
2766 | static int |
2767 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
2768 | { | |
2769 | int pid = * (int *) args; | |
2770 | ||
2771 | if (ptid_get_pid (entry->id) == pid) | |
2772 | return 1; | |
2773 | ||
2774 | return 0; | |
2775 | } | |
2776 | ||
2777 | static void | |
2778 | kill_inferior_callback (struct inferior_list_entry *entry) | |
2779 | { | |
2780 | struct process_info *process = (struct process_info *) entry; | |
2781 | int pid = ptid_get_pid (process->head.id); | |
2782 | ||
2783 | kill_inferior (pid); | |
2784 | discard_queued_stop_replies (pid); | |
2785 | } | |
2786 | ||
9f767825 DE |
2787 | /* Callback for for_each_inferior to detach or kill the inferior, |
2788 | depending on whether we attached to it or not. | |
2789 | We inform the user whether we're detaching or killing the process | |
2790 | as this is only called when gdbserver is about to exit. */ | |
2791 | ||
95954743 PA |
2792 | static void |
2793 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
2794 | { | |
2795 | struct process_info *process = (struct process_info *) entry; | |
2796 | int pid = ptid_get_pid (process->head.id); | |
2797 | ||
2798 | if (process->attached) | |
2799 | detach_inferior (pid); | |
2800 | else | |
2801 | kill_inferior (pid); | |
2802 | ||
2803 | discard_queued_stop_replies (pid); | |
2804 | } | |
2805 | ||
9f767825 DE |
2806 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
2807 | the pids of started inferiors. */ | |
2808 | ||
2809 | static void | |
2810 | print_started_pid (struct inferior_list_entry *entry) | |
2811 | { | |
2812 | struct process_info *process = (struct process_info *) entry; | |
2813 | ||
2814 | if (! process->attached) | |
2815 | { | |
2816 | int pid = ptid_get_pid (process->head.id); | |
2817 | fprintf (stderr, " %d", pid); | |
2818 | } | |
2819 | } | |
2820 | ||
2821 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
2822 | the pids of attached inferiors. */ | |
2823 | ||
2824 | static void | |
2825 | print_attached_pid (struct inferior_list_entry *entry) | |
2826 | { | |
2827 | struct process_info *process = (struct process_info *) entry; | |
2828 | ||
2829 | if (process->attached) | |
2830 | { | |
2831 | int pid = ptid_get_pid (process->head.id); | |
2832 | fprintf (stderr, " %d", pid); | |
2833 | } | |
2834 | } | |
2835 | ||
2836 | /* Call this when exiting gdbserver with possible inferiors that need | |
2837 | to be killed or detached from. */ | |
2838 | ||
2839 | static void | |
2840 | detach_or_kill_for_exit (void) | |
2841 | { | |
2842 | /* First print a list of the inferiors we will be killing/detaching. | |
2843 | This is to assist the user, for example, in case the inferior unexpectedly | |
2844 | dies after we exit: did we screw up or did the inferior exit on its own? | |
2845 | Having this info will save some head-scratching. */ | |
2846 | ||
2847 | if (have_started_inferiors_p ()) | |
2848 | { | |
2849 | fprintf (stderr, "Killing process(es):"); | |
2850 | for_each_inferior (&all_processes, print_started_pid); | |
2851 | fprintf (stderr, "\n"); | |
2852 | } | |
2853 | if (have_attached_inferiors_p ()) | |
2854 | { | |
2855 | fprintf (stderr, "Detaching process(es):"); | |
2856 | for_each_inferior (&all_processes, print_attached_pid); | |
2857 | fprintf (stderr, "\n"); | |
2858 | } | |
2859 | ||
2860 | /* Now we can kill or detach the inferiors. */ | |
2861 | ||
2862 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
2863 | } | |
2864 | ||
c906108c | 2865 | int |
da85418c | 2866 | main (int argc, char *argv[]) |
c906108c | 2867 | { |
0729219d DJ |
2868 | int bad_attach; |
2869 | int pid; | |
2d717e4f DJ |
2870 | char *arg_end, *port; |
2871 | char **next_arg = &argv[1]; | |
89dc0afd JK |
2872 | volatile int multi_mode = 0; |
2873 | volatile int attach = 0; | |
2d717e4f | 2874 | int was_running; |
c906108c | 2875 | |
2d717e4f | 2876 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 2877 | { |
2d717e4f DJ |
2878 | if (strcmp (*next_arg, "--version") == 0) |
2879 | { | |
2880 | gdbserver_version (); | |
2881 | exit (0); | |
2882 | } | |
2883 | else if (strcmp (*next_arg, "--help") == 0) | |
2884 | { | |
c16158bc | 2885 | gdbserver_usage (stdout); |
2d717e4f DJ |
2886 | exit (0); |
2887 | } | |
2888 | else if (strcmp (*next_arg, "--attach") == 0) | |
2889 | attach = 1; | |
2890 | else if (strcmp (*next_arg, "--multi") == 0) | |
2891 | multi_mode = 1; | |
ccd213ac DJ |
2892 | else if (strcmp (*next_arg, "--wrapper") == 0) |
2893 | { | |
2894 | next_arg++; | |
2895 | ||
2896 | wrapper_argv = next_arg; | |
2897 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
2898 | next_arg++; | |
2899 | ||
2900 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
2901 | { | |
c16158bc | 2902 | gdbserver_usage (stderr); |
ccd213ac DJ |
2903 | exit (1); |
2904 | } | |
2905 | ||
2906 | /* Consume the "--". */ | |
2907 | *next_arg = NULL; | |
2908 | } | |
2d717e4f DJ |
2909 | else if (strcmp (*next_arg, "--debug") == 0) |
2910 | debug_threads = 1; | |
62709adf PA |
2911 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
2912 | remote_debug = 1; | |
db42f210 PA |
2913 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
2914 | { | |
2915 | gdbserver_show_disableable (stdout); | |
2916 | exit (0); | |
2917 | } | |
2918 | else if (strncmp (*next_arg, | |
2919 | "--disable-packet=", | |
2920 | sizeof ("--disable-packet=") - 1) == 0) | |
2921 | { | |
2922 | char *packets, *tok; | |
2923 | ||
2924 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
2925 | for (tok = strtok (packets, ","); | |
2926 | tok != NULL; | |
2927 | tok = strtok (NULL, ",")) | |
2928 | { | |
2929 | if (strcmp ("vCont", tok) == 0) | |
2930 | disable_packet_vCont = 1; | |
2931 | else if (strcmp ("Tthread", tok) == 0) | |
2932 | disable_packet_Tthread = 1; | |
2933 | else if (strcmp ("qC", tok) == 0) | |
2934 | disable_packet_qC = 1; | |
2935 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
2936 | disable_packet_qfThreadInfo = 1; | |
2937 | else if (strcmp ("threads", tok) == 0) | |
2938 | { | |
2939 | disable_packet_vCont = 1; | |
2940 | disable_packet_Tthread = 1; | |
2941 | disable_packet_qC = 1; | |
2942 | disable_packet_qfThreadInfo = 1; | |
2943 | } | |
2944 | else | |
2945 | { | |
2946 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
2947 | tok); | |
2948 | gdbserver_show_disableable (stderr); | |
2949 | exit (1); | |
2950 | } | |
2951 | } | |
2952 | } | |
e0f9f062 DE |
2953 | else if (strcmp (*next_arg, "-") == 0) |
2954 | { | |
2955 | /* "-" specifies a stdio connection and is a form of port | |
2956 | specification. */ | |
2957 | *next_arg = STDIO_CONNECTION_NAME; | |
2958 | break; | |
2959 | } | |
03583c20 UW |
2960 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
2961 | disable_randomization = 1; | |
2962 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
2963 | disable_randomization = 0; | |
03f2bd59 JK |
2964 | else if (strcmp (*next_arg, "--once") == 0) |
2965 | run_once = 1; | |
2d717e4f DJ |
2966 | else |
2967 | { | |
2968 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
2969 | exit (1); | |
2970 | } | |
dd24457d | 2971 | |
2d717e4f DJ |
2972 | next_arg++; |
2973 | continue; | |
dd24457d DJ |
2974 | } |
2975 | ||
c5aa993b | 2976 | if (setjmp (toplevel)) |
c906108c | 2977 | { |
c5aa993b JM |
2978 | fprintf (stderr, "Exiting\n"); |
2979 | exit (1); | |
c906108c SS |
2980 | } |
2981 | ||
2d717e4f DJ |
2982 | port = *next_arg; |
2983 | next_arg++; | |
2984 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
2985 | { | |
c16158bc | 2986 | gdbserver_usage (stderr); |
2d717e4f DJ |
2987 | exit (1); |
2988 | } | |
2989 | ||
602e3198 JK |
2990 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
2991 | opened by remote_prepare. */ | |
2992 | notice_open_fds (); | |
2993 | ||
e0f9f062 DE |
2994 | /* We need to know whether the remote connection is stdio before |
2995 | starting the inferior. Inferiors created in this scenario have | |
2996 | stdin,stdout redirected. So do this here before we call | |
2997 | start_inferior. */ | |
2998 | remote_prepare (port); | |
2999 | ||
0729219d DJ |
3000 | bad_attach = 0; |
3001 | pid = 0; | |
2d717e4f DJ |
3002 | |
3003 | /* --attach used to come after PORT, so allow it there for | |
3004 | compatibility. */ | |
3005 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3006 | { |
2d717e4f DJ |
3007 | attach = 1; |
3008 | next_arg++; | |
45b7b345 DJ |
3009 | } |
3010 | ||
2d717e4f DJ |
3011 | if (attach |
3012 | && (*next_arg == NULL | |
3013 | || (*next_arg)[0] == '\0' | |
3014 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3015 | || *arg_end != '\0' | |
3016 | || next_arg[1] != NULL)) | |
3017 | bad_attach = 1; | |
3018 | ||
3019 | if (bad_attach) | |
dd24457d | 3020 | { |
c16158bc | 3021 | gdbserver_usage (stderr); |
dd24457d DJ |
3022 | exit (1); |
3023 | } | |
c906108c | 3024 | |
a20d5e98 | 3025 | initialize_async_io (); |
4ce44c66 | 3026 | initialize_low (); |
60f662b0 | 3027 | initialize_event_loop (); |
219f2f23 PA |
3028 | if (target_supports_tracepoints ()) |
3029 | initialize_tracepoint (); | |
4ce44c66 | 3030 | |
bca929d3 DE |
3031 | own_buf = xmalloc (PBUFSIZ + 1); |
3032 | mem_buf = xmalloc (PBUFSIZ); | |
0a30fbc4 | 3033 | |
2d717e4f | 3034 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3035 | { |
2d717e4f DJ |
3036 | int i, n; |
3037 | ||
3038 | n = argc - (next_arg - argv); | |
bca929d3 | 3039 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
2d717e4f | 3040 | for (i = 0; i < n; i++) |
bca929d3 | 3041 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
3042 | program_argv[i] = NULL; |
3043 | ||
45b7b345 | 3044 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 3045 | start_inferior (program_argv); |
c906108c | 3046 | |
c588c53c MS |
3047 | /* We are now (hopefully) stopped at the first instruction of |
3048 | the target process. This assumes that the target process was | |
3049 | successfully created. */ | |
45b7b345 | 3050 | } |
2d717e4f DJ |
3051 | else if (pid != 0) |
3052 | { | |
5b1c542e | 3053 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3054 | error ("Attaching not supported on this target"); |
3055 | ||
3056 | /* Otherwise succeeded. */ | |
3057 | } | |
45b7b345 DJ |
3058 | else |
3059 | { | |
5b1c542e PA |
3060 | last_status.kind = TARGET_WAITKIND_EXITED; |
3061 | last_status.value.integer = 0; | |
95954743 | 3062 | last_ptid = minus_one_ptid; |
45b7b345 | 3063 | } |
c906108c | 3064 | |
14a00470 YQ |
3065 | initialize_notif (); |
3066 | ||
311de423 PA |
3067 | /* Don't report shared library events on the initial connection, |
3068 | even if some libraries are preloaded. Avoids the "stopped by | |
3069 | shared library event" notice on gdb side. */ | |
3070 | dlls_changed = 0; | |
3071 | ||
8264bb58 DJ |
3072 | if (setjmp (toplevel)) |
3073 | { | |
f128d5e9 PA |
3074 | /* If something fails and longjmps while detaching or killing |
3075 | inferiors, we'd end up here again, stuck in an infinite loop | |
3076 | trap. Be sure that if that happens, we exit immediately | |
3077 | instead. */ | |
01b17894 PA |
3078 | if (setjmp (toplevel) == 0) |
3079 | detach_or_kill_for_exit (); | |
3080 | else | |
3081 | fprintf (stderr, "Detach or kill failed. Exiting\n"); | |
8264bb58 DJ |
3082 | exit (1); |
3083 | } | |
3084 | ||
5b1c542e PA |
3085 | if (last_status.kind == TARGET_WAITKIND_EXITED |
3086 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3087 | was_running = 0; |
3088 | else | |
3089 | was_running = 1; | |
3090 | ||
3091 | if (!was_running && !multi_mode) | |
c588c53c | 3092 | { |
2d717e4f | 3093 | fprintf (stderr, "No program to debug. GDBserver exiting.\n"); |
c588c53c MS |
3094 | exit (1); |
3095 | } | |
3096 | ||
c906108c SS |
3097 | while (1) |
3098 | { | |
a6f3e723 | 3099 | noack_mode = 0; |
95954743 | 3100 | multi_process = 0; |
8336d594 PA |
3101 | /* Be sure we're out of tfind mode. */ |
3102 | current_traceframe = -1; | |
bd99dc85 | 3103 | |
2d717e4f | 3104 | remote_open (port); |
c906108c | 3105 | |
2d717e4f DJ |
3106 | if (setjmp (toplevel) != 0) |
3107 | { | |
3108 | /* An error occurred. */ | |
3109 | if (response_needed) | |
3110 | { | |
3111 | write_enn (own_buf); | |
3112 | putpkt (own_buf); | |
3113 | } | |
3114 | } | |
3115 | ||
bd99dc85 | 3116 | /* Wait for events. This will return when all event sources are |
8336d594 | 3117 | removed from the event loop. */ |
bd99dc85 PA |
3118 | start_event_loop (); |
3119 | ||
3120 | /* If an exit was requested (using the "monitor exit" command), | |
3121 | terminate now. The only other way to get here is for | |
3122 | getpkt to fail; close the connection and reopen it at the | |
3123 | top of the loop. */ | |
3124 | ||
03f2bd59 | 3125 | if (exit_requested || run_once) |
c906108c | 3126 | { |
01b17894 PA |
3127 | /* If something fails and longjmps while detaching or |
3128 | killing inferiors, we'd end up here again, stuck in an | |
3129 | infinite loop trap. Be sure that if that happens, we | |
3130 | exit immediately instead. */ | |
3131 | if (setjmp (toplevel) == 0) | |
3132 | { | |
3133 | detach_or_kill_for_exit (); | |
3134 | exit (0); | |
3135 | } | |
3136 | else | |
3137 | { | |
3138 | fprintf (stderr, "Detach or kill failed. Exiting\n"); | |
3139 | exit (1); | |
3140 | } | |
bd99dc85 | 3141 | } |
8336d594 PA |
3142 | |
3143 | fprintf (stderr, | |
3144 | "Remote side has terminated connection. " | |
3145 | "GDBserver will reopen the connection.\n"); | |
3146 | ||
9939e131 PA |
3147 | /* Get rid of any pending statuses. An eventual reconnection |
3148 | (by the same GDB instance or another) will refresh all its | |
3149 | state from scratch. */ | |
3150 | discard_queued_stop_replies (-1); | |
3151 | for_each_inferior (&all_threads, clear_pending_status_callback); | |
3152 | ||
8336d594 PA |
3153 | if (tracing) |
3154 | { | |
3155 | if (disconnected_tracing) | |
3156 | { | |
3157 | /* Try to enable non-stop/async mode, so we we can both | |
3158 | wait for an async socket accept, and handle async | |
3159 | target events simultaneously. There's also no point | |
3160 | either in having the target always stop all threads, | |
3161 | when we're going to pass signals down without | |
3162 | informing GDB. */ | |
3163 | if (!non_stop) | |
3164 | { | |
3165 | if (start_non_stop (1)) | |
3166 | non_stop = 1; | |
3167 | ||
3168 | /* Detaching implicitly resumes all threads; simply | |
3169 | disconnecting does not. */ | |
3170 | } | |
3171 | } | |
3172 | else | |
3173 | { | |
3174 | fprintf (stderr, | |
3175 | "Disconnected tracing disabled; stopping trace run.\n"); | |
3176 | stop_tracing (); | |
3177 | } | |
3178 | } | |
bd99dc85 PA |
3179 | } |
3180 | } | |
01f9e8fa | 3181 | |
9f3a5c85 LM |
3182 | /* Process options coming from Z packets for *point at address |
3183 | POINT_ADDR. PACKET is the packet buffer. *PACKET is updated | |
3184 | to point to the first char after the last processed option. */ | |
3185 | ||
3186 | static void | |
3187 | process_point_options (CORE_ADDR point_addr, char **packet) | |
3188 | { | |
3189 | char *dataptr = *packet; | |
d3ce09f5 | 3190 | int persist; |
9f3a5c85 LM |
3191 | |
3192 | /* Check if data has the correct format. */ | |
3193 | if (*dataptr != ';') | |
3194 | return; | |
3195 | ||
3196 | dataptr++; | |
3197 | ||
3198 | while (*dataptr) | |
3199 | { | |
d3ce09f5 SS |
3200 | if (*dataptr == ';') |
3201 | ++dataptr; | |
3202 | ||
3203 | if (*dataptr == 'X') | |
9f3a5c85 | 3204 | { |
d3ce09f5 | 3205 | /* Conditional expression. */ |
d171ca78 YQ |
3206 | if (debug_threads) |
3207 | fprintf (stderr, "Found breakpoint condition.\n"); | |
d3ce09f5 SS |
3208 | add_breakpoint_condition (point_addr, &dataptr); |
3209 | } | |
3210 | else if (strncmp (dataptr, "cmds:", strlen ("cmds:")) == 0) | |
3211 | { | |
3212 | dataptr += strlen ("cmds:"); | |
3213 | if (debug_threads) | |
3214 | fprintf (stderr, "Found breakpoint commands %s.\n", dataptr); | |
3215 | persist = (*dataptr == '1'); | |
3216 | dataptr += 2; | |
3217 | add_breakpoint_commands (point_addr, &dataptr, persist); | |
3218 | } | |
3219 | else | |
3220 | { | |
d3ce09f5 SS |
3221 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
3222 | *dataptr); | |
78a99e91 PA |
3223 | /* Skip tokens until we find one that we recognize. */ |
3224 | while (*dataptr && *dataptr != ';') | |
3225 | dataptr++; | |
9f3a5c85 | 3226 | } |
9f3a5c85 LM |
3227 | } |
3228 | *packet = dataptr; | |
3229 | } | |
3230 | ||
bd99dc85 PA |
3231 | /* Event loop callback that handles a serial event. The first byte in |
3232 | the serial buffer gets us here. We expect characters to arrive at | |
3233 | a brisk pace, so we read the rest of the packet with a blocking | |
3234 | getpkt call. */ | |
01f9e8fa | 3235 | |
8336d594 | 3236 | static int |
bd99dc85 PA |
3237 | process_serial_event (void) |
3238 | { | |
3239 | char ch; | |
3240 | int i = 0; | |
3241 | int signal; | |
3242 | unsigned int len; | |
764880b7 | 3243 | int res; |
bd99dc85 | 3244 | CORE_ADDR mem_addr; |
95954743 | 3245 | int pid; |
bd99dc85 PA |
3246 | unsigned char sig; |
3247 | int packet_len; | |
3248 | int new_packet_len = -1; | |
3249 | ||
3250 | /* Used to decide when gdbserver should exit in | |
3251 | multi-mode/remote. */ | |
3252 | static int have_ran = 0; | |
3253 | ||
3254 | if (!have_ran) | |
3255 | have_ran = target_running (); | |
3256 | ||
3257 | disable_async_io (); | |
3258 | ||
3259 | response_needed = 0; | |
3260 | packet_len = getpkt (own_buf); | |
3261 | if (packet_len <= 0) | |
3262 | { | |
bd99dc85 | 3263 | remote_close (); |
8336d594 PA |
3264 | /* Force an event loop break. */ |
3265 | return -1; | |
bd99dc85 PA |
3266 | } |
3267 | response_needed = 1; | |
3268 | ||
3269 | i = 0; | |
3270 | ch = own_buf[i++]; | |
3271 | switch (ch) | |
3272 | { | |
3273 | case 'q': | |
3274 | handle_query (own_buf, packet_len, &new_packet_len); | |
3275 | break; | |
3276 | case 'Q': | |
3277 | handle_general_set (own_buf); | |
3278 | break; | |
3279 | case 'D': | |
3280 | require_running (own_buf); | |
95954743 PA |
3281 | |
3282 | if (multi_process) | |
3283 | { | |
3284 | i++; /* skip ';' */ | |
3285 | pid = strtol (&own_buf[i], NULL, 16); | |
3286 | } | |
3287 | else | |
fbd5db48 | 3288 | pid = ptid_get_pid (current_ptid); |
95954743 | 3289 | |
d3ce09f5 | 3290 | if ((tracing && disconnected_tracing) || any_persistent_commands ()) |
8336d594 PA |
3291 | { |
3292 | struct thread_resume resume_info; | |
3293 | struct process_info *process = find_process_pid (pid); | |
3294 | ||
3295 | if (process == NULL) | |
3296 | { | |
3297 | write_enn (own_buf); | |
3298 | break; | |
3299 | } | |
3300 | ||
d3ce09f5 SS |
3301 | if (tracing && disconnected_tracing) |
3302 | fprintf (stderr, | |
3303 | "Disconnected tracing in effect, " | |
3304 | "leaving gdbserver attached to the process\n"); | |
3305 | ||
3306 | if (any_persistent_commands ()) | |
3307 | fprintf (stderr, | |
3308 | "Persistent commands are present, " | |
3309 | "leaving gdbserver attached to the process\n"); | |
8336d594 PA |
3310 | |
3311 | /* Make sure we're in non-stop/async mode, so we we can both | |
3312 | wait for an async socket accept, and handle async target | |
3313 | events simultaneously. There's also no point either in | |
3314 | having the target stop all threads, when we're going to | |
3315 | pass signals down without informing GDB. */ | |
3316 | if (!non_stop) | |
3317 | { | |
3318 | if (debug_threads) | |
3319 | fprintf (stderr, "Forcing non-stop mode\n"); | |
3320 | ||
3321 | non_stop = 1; | |
3322 | start_non_stop (1); | |
3323 | } | |
3324 | ||
3325 | process->gdb_detached = 1; | |
3326 | ||
3327 | /* Detaching implicitly resumes all threads. */ | |
3328 | resume_info.thread = minus_one_ptid; | |
3329 | resume_info.kind = resume_continue; | |
3330 | resume_info.sig = 0; | |
3331 | (*the_target->resume) (&resume_info, 1); | |
3332 | ||
3333 | write_ok (own_buf); | |
3334 | break; /* from switch/case */ | |
3335 | } | |
3336 | ||
95954743 | 3337 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 3338 | stop_tracing (); |
95954743 | 3339 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
3340 | write_enn (own_buf); |
3341 | else | |
3342 | { | |
95954743 | 3343 | discard_queued_stop_replies (pid); |
bd99dc85 PA |
3344 | write_ok (own_buf); |
3345 | ||
3346 | if (extended_protocol) | |
c906108c | 3347 | { |
bd99dc85 PA |
3348 | /* Treat this like a normal program exit. */ |
3349 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3350 | last_status.value.integer = 0; | |
95954743 | 3351 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 3352 | |
bd99dc85 PA |
3353 | current_inferior = NULL; |
3354 | } | |
3355 | else | |
3356 | { | |
3357 | putpkt (own_buf); | |
3358 | remote_close (); | |
3359 | ||
3360 | /* If we are attached, then we can exit. Otherwise, we | |
3361 | need to hang around doing nothing, until the child is | |
3362 | gone. */ | |
71f55dd8 | 3363 | join_inferior (pid); |
bd99dc85 PA |
3364 | exit (0); |
3365 | } | |
3366 | } | |
3367 | break; | |
3368 | case '!': | |
3369 | extended_protocol = 1; | |
3370 | write_ok (own_buf); | |
3371 | break; | |
3372 | case '?': | |
3373 | handle_status (own_buf); | |
3374 | break; | |
3375 | case 'H': | |
3376 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
3377 | { | |
95954743 PA |
3378 | ptid_t gdb_id, thread_id; |
3379 | int pid; | |
bd99dc85 PA |
3380 | |
3381 | require_running (own_buf); | |
95954743 PA |
3382 | |
3383 | gdb_id = read_ptid (&own_buf[2], NULL); | |
3384 | ||
3385 | pid = ptid_get_pid (gdb_id); | |
3386 | ||
3387 | if (ptid_equal (gdb_id, null_ptid) | |
3388 | || ptid_equal (gdb_id, minus_one_ptid)) | |
3389 | thread_id = null_ptid; | |
3390 | else if (pid != 0 | |
3391 | && ptid_equal (pid_to_ptid (pid), | |
3392 | gdb_id)) | |
3393 | { | |
3394 | struct thread_info *thread = | |
3395 | (struct thread_info *) find_inferior (&all_threads, | |
3396 | first_thread_of, | |
3397 | &pid); | |
3398 | if (!thread) | |
3399 | { | |
3400 | write_enn (own_buf); | |
3401 | break; | |
3402 | } | |
3403 | ||
3404 | thread_id = ((struct inferior_list_entry *)thread)->id; | |
3405 | } | |
bd99dc85 PA |
3406 | else |
3407 | { | |
3408 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 3409 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3410 | { |
a06660f7 | 3411 | write_enn (own_buf); |
c906108c SS |
3412 | break; |
3413 | } | |
c906108c SS |
3414 | } |
3415 | ||
bd99dc85 | 3416 | if (own_buf[1] == 'g') |
c906108c | 3417 | { |
95954743 | 3418 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3419 | { |
bd99dc85 PA |
3420 | /* GDB is telling us to choose any thread. Check if |
3421 | the currently selected thread is still valid. If | |
3422 | it is not, select the first available. */ | |
3423 | struct thread_info *thread = | |
3424 | (struct thread_info *) find_inferior_id (&all_threads, | |
3425 | general_thread); | |
3426 | if (thread == NULL) | |
3427 | thread_id = all_threads.head->id; | |
c906108c | 3428 | } |
bd99dc85 PA |
3429 | |
3430 | general_thread = thread_id; | |
3431 | set_desired_inferior (1); | |
c906108c | 3432 | } |
bd99dc85 PA |
3433 | else if (own_buf[1] == 'c') |
3434 | cont_thread = thread_id; | |
c906108c | 3435 | |
bd99dc85 PA |
3436 | write_ok (own_buf); |
3437 | } | |
3438 | else | |
3439 | { | |
3440 | /* Silently ignore it so that gdb can extend the protocol | |
3441 | without compatibility headaches. */ | |
3442 | own_buf[0] = '\0'; | |
2d717e4f | 3443 | } |
bd99dc85 PA |
3444 | break; |
3445 | case 'g': | |
219f2f23 PA |
3446 | require_running (own_buf); |
3447 | if (current_traceframe >= 0) | |
3448 | { | |
3aee8918 PA |
3449 | struct regcache *regcache |
3450 | = new_register_cache (current_target_desc ()); | |
219f2f23 PA |
3451 | |
3452 | if (fetch_traceframe_registers (current_traceframe, | |
3453 | regcache, -1) == 0) | |
3454 | registers_to_string (regcache, own_buf); | |
3455 | else | |
3456 | write_enn (own_buf); | |
3457 | free_register_cache (regcache); | |
3458 | } | |
3459 | else | |
3460 | { | |
3461 | struct regcache *regcache; | |
3462 | ||
3463 | set_desired_inferior (1); | |
3464 | regcache = get_thread_regcache (current_inferior, 1); | |
3465 | registers_to_string (regcache, own_buf); | |
3466 | } | |
bd99dc85 PA |
3467 | break; |
3468 | case 'G': | |
219f2f23 PA |
3469 | require_running (own_buf); |
3470 | if (current_traceframe >= 0) | |
3471 | write_enn (own_buf); | |
3472 | else | |
3473 | { | |
442ea881 PA |
3474 | struct regcache *regcache; |
3475 | ||
442ea881 PA |
3476 | set_desired_inferior (1); |
3477 | regcache = get_thread_regcache (current_inferior, 1); | |
3478 | registers_from_string (regcache, &own_buf[1]); | |
3479 | write_ok (own_buf); | |
3480 | } | |
bd99dc85 PA |
3481 | break; |
3482 | case 'm': | |
3483 | require_running (own_buf); | |
3484 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
764880b7 PA |
3485 | res = gdb_read_memory (mem_addr, mem_buf, len); |
3486 | if (res < 0) | |
bd99dc85 | 3487 | write_enn (own_buf); |
764880b7 PA |
3488 | else |
3489 | convert_int_to_ascii (mem_buf, own_buf, res); | |
bd99dc85 PA |
3490 | break; |
3491 | case 'M': | |
3492 | require_running (own_buf); | |
fa593d66 | 3493 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 3494 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
3495 | write_ok (own_buf); |
3496 | else | |
3497 | write_enn (own_buf); | |
3498 | break; | |
3499 | case 'X': | |
3500 | require_running (own_buf); | |
3501 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 3502 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 3503 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
3504 | write_enn (own_buf); |
3505 | else | |
3506 | write_ok (own_buf); | |
3507 | break; | |
3508 | case 'C': | |
3509 | require_running (own_buf); | |
3510 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
2ea28649 PA |
3511 | if (gdb_signal_to_host_p (sig)) |
3512 | signal = gdb_signal_to_host (sig); | |
bd99dc85 PA |
3513 | else |
3514 | signal = 0; | |
3515 | myresume (own_buf, 0, signal); | |
3516 | break; | |
3517 | case 'S': | |
3518 | require_running (own_buf); | |
3519 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
2ea28649 PA |
3520 | if (gdb_signal_to_host_p (sig)) |
3521 | signal = gdb_signal_to_host (sig); | |
bd99dc85 PA |
3522 | else |
3523 | signal = 0; | |
3524 | myresume (own_buf, 1, signal); | |
3525 | break; | |
3526 | case 'c': | |
3527 | require_running (own_buf); | |
3528 | signal = 0; | |
3529 | myresume (own_buf, 0, signal); | |
3530 | break; | |
3531 | case 's': | |
3532 | require_running (own_buf); | |
3533 | signal = 0; | |
3534 | myresume (own_buf, 1, signal); | |
3535 | break; | |
c6314022 AR |
3536 | case 'Z': /* insert_ ... */ |
3537 | /* Fallthrough. */ | |
3538 | case 'z': /* remove_ ... */ | |
bd99dc85 | 3539 | { |
bd99dc85 | 3540 | char *dataptr; |
aca22551 PA |
3541 | ULONGEST addr; |
3542 | int len; | |
bd99dc85 | 3543 | char type = own_buf[1]; |
c6314022 | 3544 | int res; |
d993e290 | 3545 | const int insert = ch == 'Z'; |
aca22551 PA |
3546 | char *p = &own_buf[3]; |
3547 | ||
3548 | p = unpack_varlen_hex (p, &addr); | |
3549 | len = strtol (p + 1, &dataptr, 16); | |
c6314022 | 3550 | |
d993e290 PA |
3551 | /* Default to unrecognized/unsupported. */ |
3552 | res = 1; | |
3553 | switch (type) | |
3554 | { | |
3555 | case '0': /* software-breakpoint */ | |
3556 | case '1': /* hardware-breakpoint */ | |
3557 | case '2': /* write watchpoint */ | |
3558 | case '3': /* read watchpoint */ | |
3559 | case '4': /* access watchpoint */ | |
3560 | require_running (own_buf); | |
3561 | if (insert && the_target->insert_point != NULL) | |
9f3a5c85 LM |
3562 | { |
3563 | /* Insert the breakpoint. If it is already inserted, nothing | |
3564 | will take place. */ | |
3565 | res = (*the_target->insert_point) (type, addr, len); | |
3566 | ||
3567 | /* GDB may have sent us a list of *point parameters to be | |
3568 | evaluated on the target's side. Read such list here. If we | |
3569 | already have a list of parameters, GDB is telling us to drop | |
3570 | that list and use this one instead. */ | |
3571 | if (!res && (type == '0' || type == '1')) | |
3572 | { | |
3573 | /* Remove previous conditions. */ | |
3574 | clear_gdb_breakpoint_conditions (addr); | |
3575 | process_point_options (addr, &dataptr); | |
3576 | } | |
3577 | } | |
d993e290 PA |
3578 | else if (!insert && the_target->remove_point != NULL) |
3579 | res = (*the_target->remove_point) (type, addr, len); | |
3580 | break; | |
3581 | default: | |
3582 | break; | |
3583 | } | |
bd99dc85 | 3584 | |
c6314022 AR |
3585 | if (res == 0) |
3586 | write_ok (own_buf); | |
3587 | else if (res == 1) | |
3588 | /* Unsupported. */ | |
3589 | own_buf[0] = '\0'; | |
bd99dc85 | 3590 | else |
c6314022 | 3591 | write_enn (own_buf); |
bd99dc85 PA |
3592 | break; |
3593 | } | |
3594 | case 'k': | |
3595 | response_needed = 0; | |
3596 | if (!target_running ()) | |
95954743 PA |
3597 | /* The packet we received doesn't make sense - but we can't |
3598 | reply to it, either. */ | |
8336d594 | 3599 | return 0; |
c906108c | 3600 | |
95954743 PA |
3601 | fprintf (stderr, "Killing all inferiors\n"); |
3602 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 3603 | |
bd99dc85 PA |
3604 | /* When using the extended protocol, we wait with no program |
3605 | running. The traditional protocol will exit instead. */ | |
3606 | if (extended_protocol) | |
3607 | { | |
3608 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 3609 | last_status.value.sig = GDB_SIGNAL_KILL; |
8336d594 | 3610 | return 0; |
bd99dc85 PA |
3611 | } |
3612 | else | |
8336d594 PA |
3613 | exit (0); |
3614 | ||
bd99dc85 PA |
3615 | case 'T': |
3616 | { | |
95954743 | 3617 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
3618 | |
3619 | require_running (own_buf); | |
95954743 PA |
3620 | |
3621 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 3622 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 3623 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
3624 | { |
3625 | write_enn (own_buf); | |
3626 | break; | |
3627 | } | |
3628 | ||
3629 | if (mythread_alive (thread_id)) | |
3630 | write_ok (own_buf); | |
3631 | else | |
3632 | write_enn (own_buf); | |
3633 | } | |
3634 | break; | |
3635 | case 'R': | |
3636 | response_needed = 0; | |
3637 | ||
3638 | /* Restarting the inferior is only supported in the extended | |
3639 | protocol. */ | |
3640 | if (extended_protocol) | |
3641 | { | |
3642 | if (target_running ()) | |
95954743 PA |
3643 | for_each_inferior (&all_processes, |
3644 | kill_inferior_callback); | |
bd99dc85 PA |
3645 | fprintf (stderr, "GDBserver restarting\n"); |
3646 | ||
3647 | /* Wait till we are at 1st instruction in prog. */ | |
3648 | if (program_argv != NULL) | |
3649 | start_inferior (program_argv); | |
3650 | else | |
3651 | { | |
3652 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 3653 | last_status.value.sig = GDB_SIGNAL_KILL; |
bd99dc85 | 3654 | } |
8336d594 | 3655 | return 0; |
c906108c SS |
3656 | } |
3657 | else | |
3658 | { | |
bd99dc85 PA |
3659 | /* It is a request we don't understand. Respond with an |
3660 | empty packet so that gdb knows that we don't support this | |
3661 | request. */ | |
3662 | own_buf[0] = '\0'; | |
3663 | break; | |
3664 | } | |
3665 | case 'v': | |
3666 | /* Extended (long) request. */ | |
3667 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
3668 | break; | |
3669 | ||
3670 | default: | |
3671 | /* It is a request we don't understand. Respond with an empty | |
3672 | packet so that gdb knows that we don't support this | |
3673 | request. */ | |
3674 | own_buf[0] = '\0'; | |
3675 | break; | |
3676 | } | |
3677 | ||
3678 | if (new_packet_len != -1) | |
3679 | putpkt_binary (own_buf, new_packet_len); | |
3680 | else | |
3681 | putpkt (own_buf); | |
3682 | ||
3683 | response_needed = 0; | |
3684 | ||
3685 | if (!extended_protocol && have_ran && !target_running ()) | |
3686 | { | |
3687 | /* In non-stop, defer exiting until GDB had a chance to query | |
3688 | the whole vStopped list (until it gets an OK). */ | |
14a00470 | 3689 | if (QUEUE_is_empty (notif_event_p, notif_stop.queue)) |
bd99dc85 | 3690 | { |
1a3d890b PA |
3691 | /* Be transparent when GDB is connected through stdio -- no |
3692 | need to spam GDB's console. */ | |
3693 | if (!remote_connection_is_stdio ()) | |
3694 | fprintf (stderr, "GDBserver exiting\n"); | |
c906108c | 3695 | remote_close (); |
bd99dc85 | 3696 | exit (0); |
c906108c SS |
3697 | } |
3698 | } | |
8336d594 PA |
3699 | |
3700 | if (exit_requested) | |
3701 | return -1; | |
3702 | ||
3703 | return 0; | |
c906108c | 3704 | } |
bd99dc85 PA |
3705 | |
3706 | /* Event-loop callback for serial events. */ | |
3707 | ||
8336d594 | 3708 | int |
bd99dc85 PA |
3709 | handle_serial_event (int err, gdb_client_data client_data) |
3710 | { | |
3711 | if (debug_threads) | |
3712 | fprintf (stderr, "handling possible serial event\n"); | |
3713 | ||
3714 | /* Really handle it. */ | |
8336d594 PA |
3715 | if (process_serial_event () < 0) |
3716 | return -1; | |
bd99dc85 PA |
3717 | |
3718 | /* Be sure to not change the selected inferior behind GDB's back. | |
3719 | Important in the non-stop mode asynchronous protocol. */ | |
3720 | set_desired_inferior (1); | |
8336d594 PA |
3721 | |
3722 | return 0; | |
bd99dc85 PA |
3723 | } |
3724 | ||
3725 | /* Event-loop callback for target events. */ | |
3726 | ||
8336d594 | 3727 | int |
bd99dc85 PA |
3728 | handle_target_event (int err, gdb_client_data client_data) |
3729 | { | |
3730 | if (debug_threads) | |
3731 | fprintf (stderr, "handling possible target event\n"); | |
3732 | ||
95954743 PA |
3733 | last_ptid = mywait (minus_one_ptid, &last_status, |
3734 | TARGET_WNOHANG, 1); | |
bd99dc85 PA |
3735 | |
3736 | if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
3737 | { | |
8336d594 PA |
3738 | int pid = ptid_get_pid (last_ptid); |
3739 | struct process_info *process = find_process_pid (pid); | |
3740 | int forward_event = !gdb_connected () || process->gdb_detached; | |
3741 | ||
3742 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
3743 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
3744 | { |
3745 | mark_breakpoints_out (process); | |
3746 | mourn_inferior (process); | |
3747 | } | |
ce1a5b52 | 3748 | else |
d20a8ad9 PA |
3749 | { |
3750 | /* We're reporting this thread as stopped. Update its | |
3751 | "want-stopped" state to what the client wants, until it | |
3752 | gets a new resume action. */ | |
3753 | current_inferior->last_resume_kind = resume_stop; | |
3754 | current_inferior->last_status = last_status; | |
3755 | } | |
8336d594 PA |
3756 | |
3757 | if (forward_event) | |
3758 | { | |
3759 | if (!target_running ()) | |
3760 | { | |
3761 | /* The last process exited. We're done. */ | |
3762 | exit (0); | |
3763 | } | |
3764 | ||
3765 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
3766 | { | |
3767 | /* A thread stopped with a signal, but gdb isn't | |
3768 | connected to handle it. Pass it down to the | |
3769 | inferior, as if it wasn't being traced. */ | |
3770 | struct thread_resume resume_info; | |
3771 | ||
3772 | if (debug_threads) | |
3773 | fprintf (stderr, | |
3774 | "GDB not connected; forwarding event %d for [%s]\n", | |
3775 | (int) last_status.kind, | |
3776 | target_pid_to_str (last_ptid)); | |
3777 | ||
3778 | resume_info.thread = last_ptid; | |
3779 | resume_info.kind = resume_continue; | |
2ea28649 | 3780 | resume_info.sig = gdb_signal_to_host (last_status.value.sig); |
8336d594 PA |
3781 | (*the_target->resume) (&resume_info, 1); |
3782 | } | |
3783 | else if (debug_threads) | |
3784 | fprintf (stderr, "GDB not connected; ignoring event %d for [%s]\n", | |
3785 | (int) last_status.kind, | |
3786 | target_pid_to_str (last_ptid)); | |
3787 | } | |
3788 | else | |
3789 | { | |
14a00470 YQ |
3790 | struct vstop_notif *vstop_notif |
3791 | = xmalloc (sizeof (struct vstop_notif)); | |
3792 | ||
3793 | vstop_notif->status = last_status; | |
3794 | vstop_notif->ptid = last_ptid; | |
3795 | /* Push Stop notification. */ | |
3796 | notif_push (¬if_stop, | |
3797 | (struct notif_event *) vstop_notif); | |
8336d594 | 3798 | } |
bd99dc85 PA |
3799 | } |
3800 | ||
3801 | /* Be sure to not change the selected inferior behind GDB's back. | |
3802 | Important in the non-stop mode asynchronous protocol. */ | |
3803 | set_desired_inferior (1); | |
8336d594 PA |
3804 | |
3805 | return 0; | |
bd99dc85 | 3806 | } |