Commit | Line | Data |
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c906108c | 1 | /* Main code for remote server for GDB. |
6aba47ca | 2 | Copyright (C) 1989, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2002, 2003, |
4c38e0a4 | 3 | 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "server.h" | |
21 | ||
68070c10 | 22 | #if HAVE_UNISTD_H |
a9fa9f7d | 23 | #include <unistd.h> |
68070c10 PA |
24 | #endif |
25 | #if HAVE_SIGNAL_H | |
a9fa9f7d | 26 | #include <signal.h> |
68070c10 | 27 | #endif |
b80864fb | 28 | #if HAVE_SYS_WAIT_H |
a9fa9f7d | 29 | #include <sys/wait.h> |
b80864fb | 30 | #endif |
ec56be1b PA |
31 | #if HAVE_MALLOC_H |
32 | #include <malloc.h> | |
33 | #endif | |
a9fa9f7d | 34 | |
95954743 PA |
35 | ptid_t cont_thread; |
36 | ptid_t general_thread; | |
37 | ptid_t step_thread; | |
5b1c542e | 38 | |
0d62e5e8 DJ |
39 | int server_waiting; |
40 | ||
2d717e4f | 41 | static int extended_protocol; |
2d717e4f DJ |
42 | static int response_needed; |
43 | static int exit_requested; | |
44 | ||
95954743 | 45 | int multi_process; |
bd99dc85 PA |
46 | int non_stop; |
47 | ||
ccd213ac | 48 | static char **program_argv, **wrapper_argv; |
2d717e4f | 49 | |
c74d0ad8 DJ |
50 | /* Enable miscellaneous debugging output. The name is historical - it |
51 | was originally used to debug LinuxThreads support. */ | |
52 | int debug_threads; | |
53 | ||
aa5ca48f DE |
54 | /* Enable debugging of h/w breakpoint/watchpoint support. */ |
55 | int debug_hw_points; | |
56 | ||
89be2091 DJ |
57 | int pass_signals[TARGET_SIGNAL_LAST]; |
58 | ||
c906108c | 59 | jmp_buf toplevel; |
c906108c | 60 | |
9b4b61c8 UW |
61 | const char *gdbserver_xmltarget; |
62 | ||
a9fa9f7d DJ |
63 | /* The PID of the originally created or attached inferior. Used to |
64 | send signals to the process when GDB sends us an asynchronous interrupt | |
65 | (user hitting Control-C in the client), and to wait for the child to exit | |
66 | when no longer debugging it. */ | |
67 | ||
a1928bad | 68 | unsigned long signal_pid; |
a9fa9f7d | 69 | |
290fadea RS |
70 | #ifdef SIGTTOU |
71 | /* A file descriptor for the controlling terminal. */ | |
72 | int terminal_fd; | |
73 | ||
74 | /* TERMINAL_FD's original foreground group. */ | |
75 | pid_t old_foreground_pgrp; | |
76 | ||
77 | /* Hand back terminal ownership to the original foreground group. */ | |
78 | ||
79 | static void | |
80 | restore_old_foreground_pgrp (void) | |
81 | { | |
82 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
83 | } | |
84 | #endif | |
85 | ||
ec56be1b PA |
86 | /* Set if you want to disable optional thread related packets support |
87 | in gdbserver, for the sake of testing GDB against stubs that don't | |
88 | support them. */ | |
89 | int disable_packet_vCont; | |
90 | int disable_packet_Tthread; | |
91 | int disable_packet_qC; | |
92 | int disable_packet_qfThreadInfo; | |
93 | ||
5b1c542e PA |
94 | /* Last status reported to GDB. */ |
95 | static struct target_waitstatus last_status; | |
95954743 | 96 | static ptid_t last_ptid; |
5b1c542e | 97 | |
bd99dc85 PA |
98 | static char *own_buf; |
99 | static unsigned char *mem_buf; | |
100 | ||
101 | /* Structure holding information relative to a single stop reply. We | |
102 | keep a queue of these (really a singly-linked list) to push to GDB | |
103 | in non-stop mode. */ | |
104 | struct vstop_notif | |
105 | { | |
106 | /* Pointer to next in list. */ | |
107 | struct vstop_notif *next; | |
108 | ||
109 | /* Thread or process that got the event. */ | |
95954743 | 110 | ptid_t ptid; |
bd99dc85 PA |
111 | |
112 | /* Event info. */ | |
113 | struct target_waitstatus status; | |
114 | }; | |
115 | ||
116 | /* The pending stop replies list head. */ | |
117 | static struct vstop_notif *notif_queue = NULL; | |
118 | ||
119 | /* Put a stop reply to the stop reply queue. */ | |
120 | ||
121 | static void | |
95954743 | 122 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 PA |
123 | { |
124 | struct vstop_notif *new_notif; | |
125 | ||
126 | new_notif = malloc (sizeof (*new_notif)); | |
127 | new_notif->next = NULL; | |
128 | new_notif->ptid = ptid; | |
129 | new_notif->status = *status; | |
130 | ||
131 | if (notif_queue) | |
132 | { | |
133 | struct vstop_notif *tail; | |
134 | for (tail = notif_queue; | |
135 | tail && tail->next; | |
136 | tail = tail->next) | |
137 | ; | |
138 | tail->next = new_notif; | |
139 | } | |
140 | else | |
141 | notif_queue = new_notif; | |
142 | ||
143 | if (remote_debug) | |
144 | { | |
145 | int i = 0; | |
146 | struct vstop_notif *n; | |
147 | ||
148 | for (n = notif_queue; n; n = n->next) | |
149 | i++; | |
150 | ||
151 | fprintf (stderr, "pending stop replies: %d\n", i); | |
152 | } | |
153 | } | |
154 | ||
155 | /* Place an event in the stop reply queue, and push a notification if | |
156 | we aren't sending one yet. */ | |
157 | ||
158 | void | |
95954743 | 159 | push_event (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 PA |
160 | { |
161 | queue_stop_reply (ptid, status); | |
162 | ||
163 | /* If this is the first stop reply in the queue, then inform GDB | |
164 | about it, by sending a Stop notification. */ | |
165 | if (notif_queue->next == NULL) | |
166 | { | |
167 | char *p = own_buf; | |
168 | strcpy (p, "Stop:"); | |
169 | p += strlen (p); | |
170 | prepare_resume_reply (p, | |
171 | notif_queue->ptid, ¬if_queue->status); | |
172 | putpkt_notif (own_buf); | |
173 | } | |
174 | } | |
175 | ||
95954743 PA |
176 | /* Get rid of the currently pending stop replies for PID. If PID is |
177 | -1, then apply to all processes. */ | |
bd99dc85 PA |
178 | |
179 | static void | |
95954743 | 180 | discard_queued_stop_replies (int pid) |
bd99dc85 | 181 | { |
95954743 | 182 | struct vstop_notif *prev = NULL, *reply, *next; |
bd99dc85 | 183 | |
95954743 | 184 | for (reply = notif_queue; reply; reply = next) |
bd99dc85 | 185 | { |
95954743 PA |
186 | next = reply->next; |
187 | ||
188 | if (pid == -1 | |
189 | || ptid_get_pid (reply->ptid) == pid) | |
190 | { | |
191 | if (reply == notif_queue) | |
192 | notif_queue = next; | |
193 | else | |
194 | prev->next = reply->next; | |
bd99dc85 | 195 | |
95954743 PA |
196 | free (reply); |
197 | } | |
198 | else | |
199 | prev = reply; | |
bd99dc85 PA |
200 | } |
201 | } | |
202 | ||
203 | /* If there are more stop replies to push, push one now. */ | |
204 | ||
205 | static void | |
206 | send_next_stop_reply (char *own_buf) | |
207 | { | |
208 | if (notif_queue) | |
209 | prepare_resume_reply (own_buf, | |
210 | notif_queue->ptid, | |
211 | ¬if_queue->status); | |
212 | else | |
213 | write_ok (own_buf); | |
214 | } | |
215 | ||
2d717e4f DJ |
216 | static int |
217 | target_running (void) | |
218 | { | |
219 | return all_threads.head != NULL; | |
220 | } | |
221 | ||
fc620387 | 222 | static int |
5b1c542e | 223 | start_inferior (char **argv) |
c906108c | 224 | { |
ccd213ac | 225 | char **new_argv = argv; |
2d717e4f | 226 | |
ccd213ac DJ |
227 | if (wrapper_argv != NULL) |
228 | { | |
229 | int i, count = 1; | |
230 | ||
231 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
232 | count++; | |
233 | for (i = 0; argv[i] != NULL; i++) | |
234 | count++; | |
235 | new_argv = alloca (sizeof (char *) * count); | |
236 | count = 0; | |
237 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
238 | new_argv[count++] = wrapper_argv[i]; | |
239 | for (i = 0; argv[i] != NULL; i++) | |
240 | new_argv[count++] = argv[i]; | |
241 | new_argv[count] = NULL; | |
242 | } | |
243 | ||
b80864fb | 244 | #ifdef SIGTTOU |
a9fa9f7d DJ |
245 | signal (SIGTTOU, SIG_DFL); |
246 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 247 | #endif |
a9fa9f7d | 248 | |
ccd213ac | 249 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 250 | |
c588c53c MS |
251 | /* FIXME: we don't actually know at this point that the create |
252 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 253 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 254 | signal_pid); |
b80864fb | 255 | fflush (stderr); |
a9fa9f7d | 256 | |
b80864fb | 257 | #ifdef SIGTTOU |
a9fa9f7d DJ |
258 | signal (SIGTTOU, SIG_IGN); |
259 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
260 | terminal_fd = fileno (stderr); |
261 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
262 | tcsetpgrp (terminal_fd, signal_pid); | |
263 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 264 | #endif |
c906108c | 265 | |
ccd213ac DJ |
266 | if (wrapper_argv != NULL) |
267 | { | |
268 | struct thread_resume resume_info; | |
95954743 | 269 | ptid_t ptid; |
ccd213ac | 270 | |
95954743 | 271 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 272 | resume_info.kind = resume_continue; |
ccd213ac | 273 | resume_info.sig = 0; |
ccd213ac | 274 | |
95954743 | 275 | ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 276 | |
5b1c542e PA |
277 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
278 | return signal_pid; | |
ccd213ac DJ |
279 | |
280 | do | |
281 | { | |
2bd7c093 | 282 | (*the_target->resume) (&resume_info, 1); |
ccd213ac | 283 | |
95954743 | 284 | mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e PA |
285 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
286 | return signal_pid; | |
ccd213ac | 287 | } |
5b1c542e | 288 | while (last_status.value.sig != TARGET_SIGNAL_TRAP); |
ccd213ac | 289 | |
5b1c542e | 290 | return signal_pid; |
ccd213ac DJ |
291 | } |
292 | ||
5b1c542e PA |
293 | /* Wait till we are at 1st instruction in program, return new pid |
294 | (assuming success). */ | |
95954743 | 295 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e PA |
296 | |
297 | return signal_pid; | |
c906108c SS |
298 | } |
299 | ||
45b7b345 | 300 | static int |
5b1c542e | 301 | attach_inferior (int pid) |
45b7b345 DJ |
302 | { |
303 | /* myattach should return -1 if attaching is unsupported, | |
304 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 305 | |
45b7b345 DJ |
306 | if (myattach (pid) != 0) |
307 | return -1; | |
308 | ||
6910d122 | 309 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 310 | fflush (stderr); |
6910d122 | 311 | |
a9fa9f7d DJ |
312 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
313 | attach function, so that it can be the main thread instead of | |
314 | whichever we were told to attach to. */ | |
315 | signal_pid = pid; | |
316 | ||
bd99dc85 PA |
317 | if (!non_stop) |
318 | { | |
95954743 | 319 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
320 | |
321 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
322 | process using the "attach" command, but this is different; it's | |
323 | just using "target remote". Pretend it's just starting up. */ | |
324 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
325 | && last_status.value.sig == TARGET_SIGNAL_STOP) | |
326 | last_status.value.sig = TARGET_SIGNAL_TRAP; | |
327 | } | |
9db87ebd | 328 | |
45b7b345 DJ |
329 | return 0; |
330 | } | |
331 | ||
c906108c | 332 | extern int remote_debug; |
ce3a066d | 333 | |
0876f84a DJ |
334 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
335 | or -1 otherwise. */ | |
336 | ||
337 | static int | |
338 | decode_xfer_read (char *buf, char **annex, CORE_ADDR *ofs, unsigned int *len) | |
339 | { | |
340 | /* Extract and NUL-terminate the annex. */ | |
341 | *annex = buf; | |
342 | while (*buf && *buf != ':') | |
343 | buf++; | |
344 | if (*buf == '\0') | |
345 | return -1; | |
346 | *buf++ = 0; | |
347 | ||
0e7f50da | 348 | /* After the read marker and annex, qXfer looks like a |
0876f84a DJ |
349 | traditional 'm' packet. */ |
350 | decode_m_packet (buf, ofs, len); | |
351 | ||
352 | return 0; | |
353 | } | |
354 | ||
355 | /* Write the response to a successful qXfer read. Returns the | |
356 | length of the (binary) data stored in BUF, corresponding | |
357 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
358 | the first character of the response. */ | |
359 | static int | |
23181151 | 360 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
0876f84a DJ |
361 | { |
362 | int out_len; | |
363 | ||
364 | if (is_more) | |
365 | buf[0] = 'm'; | |
366 | else | |
367 | buf[0] = 'l'; | |
368 | ||
369 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, | |
370 | PBUFSIZ - 2) + 1; | |
371 | } | |
372 | ||
89be2091 DJ |
373 | /* Handle all of the extended 'Q' packets. */ |
374 | void | |
375 | handle_general_set (char *own_buf) | |
376 | { | |
377 | if (strncmp ("QPassSignals:", own_buf, strlen ("QPassSignals:")) == 0) | |
378 | { | |
379 | int numsigs = (int) TARGET_SIGNAL_LAST, i; | |
380 | const char *p = own_buf + strlen ("QPassSignals:"); | |
381 | CORE_ADDR cursig; | |
382 | ||
383 | p = decode_address_to_semicolon (&cursig, p); | |
384 | for (i = 0; i < numsigs; i++) | |
385 | { | |
386 | if (i == cursig) | |
387 | { | |
388 | pass_signals[i] = 1; | |
389 | if (*p == '\0') | |
390 | /* Keep looping, to clear the remaining signals. */ | |
391 | cursig = -1; | |
392 | else | |
393 | p = decode_address_to_semicolon (&cursig, p); | |
394 | } | |
395 | else | |
396 | pass_signals[i] = 0; | |
397 | } | |
398 | strcpy (own_buf, "OK"); | |
399 | return; | |
400 | } | |
401 | ||
a6f3e723 SL |
402 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
403 | { | |
404 | if (remote_debug) | |
405 | { | |
406 | fprintf (stderr, "[noack mode enabled]\n"); | |
407 | fflush (stderr); | |
408 | } | |
409 | ||
410 | noack_mode = 1; | |
411 | write_ok (own_buf); | |
412 | return; | |
413 | } | |
414 | ||
bd99dc85 PA |
415 | if (strncmp (own_buf, "QNonStop:", 9) == 0) |
416 | { | |
417 | char *mode = own_buf + 9; | |
418 | int req = -1; | |
419 | char *req_str; | |
420 | ||
421 | if (strcmp (mode, "0") == 0) | |
422 | req = 0; | |
423 | else if (strcmp (mode, "1") == 0) | |
424 | req = 1; | |
425 | else | |
426 | { | |
427 | /* We don't know what this mode is, so complain to | |
428 | GDB. */ | |
429 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
430 | own_buf); | |
431 | write_enn (own_buf); | |
432 | return; | |
433 | } | |
434 | ||
435 | req_str = req ? "non-stop" : "all-stop"; | |
436 | if (start_non_stop (req) != 0) | |
437 | { | |
438 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
439 | write_enn (own_buf); | |
440 | return; | |
441 | } | |
442 | ||
443 | non_stop = req; | |
444 | ||
445 | if (remote_debug) | |
446 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
447 | ||
448 | write_ok (own_buf); | |
449 | return; | |
450 | } | |
451 | ||
219f2f23 PA |
452 | if (target_supports_tracepoints () |
453 | && handle_tracepoint_general_set (own_buf)) | |
454 | return; | |
455 | ||
89be2091 DJ |
456 | /* Otherwise we didn't know what packet it was. Say we didn't |
457 | understand it. */ | |
458 | own_buf[0] = 0; | |
459 | } | |
460 | ||
23181151 | 461 | static const char * |
fb1e4ffc | 462 | get_features_xml (const char *annex) |
23181151 | 463 | { |
9b4b61c8 UW |
464 | /* gdbserver_xmltarget defines what to return when looking |
465 | for the "target.xml" file. Its contents can either be | |
466 | verbatim XML code (prefixed with a '@') or else the name | |
467 | of the actual XML file to be used in place of "target.xml". | |
fb1e4ffc | 468 | |
9b4b61c8 UW |
469 | This variable is set up from the auto-generated |
470 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 471 | |
9b4b61c8 | 472 | if (gdbserver_xmltarget |
221c031f | 473 | && strcmp (annex, "target.xml") == 0) |
23181151 | 474 | { |
9b4b61c8 UW |
475 | if (*gdbserver_xmltarget == '@') |
476 | return gdbserver_xmltarget + 1; | |
23181151 | 477 | else |
9b4b61c8 | 478 | annex = gdbserver_xmltarget; |
23181151 DJ |
479 | } |
480 | ||
9b4b61c8 UW |
481 | #ifdef USE_XML |
482 | { | |
483 | extern const char *const xml_builtin[][2]; | |
484 | int i; | |
485 | ||
486 | /* Look for the annex. */ | |
487 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
488 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
489 | break; | |
490 | ||
491 | if (xml_builtin[i][0] != NULL) | |
492 | return xml_builtin[i][1]; | |
493 | } | |
494 | #endif | |
495 | ||
496 | return NULL; | |
23181151 DJ |
497 | } |
498 | ||
c74d0ad8 DJ |
499 | void |
500 | monitor_show_help (void) | |
501 | { | |
502 | monitor_output ("The following monitor commands are supported:\n"); | |
503 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 504 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
505 | monitor_output (" set debug-hw-points <0|1>\n"); |
506 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
507 | monitor_output (" set remote-debug <0|1>\n"); |
508 | monitor_output (" Enable remote protocol debugging messages\n"); | |
ecd7ecbc DJ |
509 | monitor_output (" exit\n"); |
510 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
511 | } |
512 | ||
219f2f23 PA |
513 | /* Read trace frame or inferior memory. */ |
514 | ||
515 | static int | |
516 | read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) | |
517 | { | |
518 | if (current_traceframe >= 0) | |
519 | { | |
520 | ULONGEST nbytes; | |
521 | ULONGEST length = len; | |
522 | ||
523 | if (traceframe_read_mem (current_traceframe, | |
524 | memaddr, myaddr, len, &nbytes)) | |
525 | return EIO; | |
526 | /* Data read from trace buffer, we're done. */ | |
527 | if (nbytes == length) | |
528 | return 0; | |
529 | if (!in_readonly_region (memaddr, length)) | |
530 | return EIO; | |
531 | /* Otherwise we have a valid readonly case, fall through. */ | |
532 | /* (assume no half-trace half-real blocks for now) */ | |
533 | } | |
534 | ||
535 | return read_inferior_memory (memaddr, myaddr, len); | |
536 | } | |
537 | ||
538 | /* Write trace frame or inferior memory. Actually, writing to trace | |
539 | frames is forbidden. */ | |
540 | ||
541 | static int | |
542 | write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) | |
543 | { | |
544 | if (current_traceframe >= 0) | |
545 | return EIO; | |
546 | else | |
547 | return write_inferior_memory (memaddr, myaddr, len); | |
548 | } | |
549 | ||
08388c79 DE |
550 | /* Subroutine of handle_search_memory to simplify it. */ |
551 | ||
552 | static int | |
553 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
554 | gdb_byte *pattern, unsigned pattern_len, | |
555 | gdb_byte *search_buf, | |
556 | unsigned chunk_size, unsigned search_buf_size, | |
557 | CORE_ADDR *found_addrp) | |
558 | { | |
559 | /* Prime the search buffer. */ | |
560 | ||
219f2f23 | 561 | if (read_memory (start_addr, search_buf, search_buf_size) != 0) |
08388c79 | 562 | { |
5e1471f5 | 563 | warning ("Unable to access target memory at 0x%lx, halting search.", |
08388c79 DE |
564 | (long) start_addr); |
565 | return -1; | |
566 | } | |
567 | ||
568 | /* Perform the search. | |
569 | ||
570 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
571 | When we've scanned N bytes we copy the trailing bytes to the start and | |
572 | read in another N bytes. */ | |
573 | ||
574 | while (search_space_len >= pattern_len) | |
575 | { | |
576 | gdb_byte *found_ptr; | |
577 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
578 | ? search_space_len | |
579 | : search_buf_size); | |
580 | ||
581 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); | |
582 | ||
583 | if (found_ptr != NULL) | |
584 | { | |
585 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
586 | *found_addrp = found_addr; | |
587 | return 1; | |
588 | } | |
589 | ||
590 | /* Not found in this chunk, skip to next chunk. */ | |
591 | ||
592 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
593 | if (search_space_len >= chunk_size) | |
594 | search_space_len -= chunk_size; | |
595 | else | |
596 | search_space_len = 0; | |
597 | ||
598 | if (search_space_len >= pattern_len) | |
599 | { | |
600 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 601 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
602 | int nr_to_read; |
603 | ||
604 | /* Copy the trailing part of the previous iteration to the front | |
605 | of the buffer for the next iteration. */ | |
606 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
607 | ||
608 | nr_to_read = (search_space_len - keep_len < chunk_size | |
609 | ? search_space_len - keep_len | |
610 | : chunk_size); | |
611 | ||
219f2f23 | 612 | if (read_memory (read_addr, search_buf + keep_len, |
08388c79 DE |
613 | nr_to_read) != 0) |
614 | { | |
5e1471f5 | 615 | warning ("Unable to access target memory at 0x%lx, halting search.", |
08388c79 DE |
616 | (long) read_addr); |
617 | return -1; | |
618 | } | |
619 | ||
620 | start_addr += chunk_size; | |
621 | } | |
622 | } | |
623 | ||
624 | /* Not found. */ | |
625 | ||
626 | return 0; | |
627 | } | |
628 | ||
629 | /* Handle qSearch:memory packets. */ | |
630 | ||
631 | static void | |
632 | handle_search_memory (char *own_buf, int packet_len) | |
633 | { | |
634 | CORE_ADDR start_addr; | |
635 | CORE_ADDR search_space_len; | |
636 | gdb_byte *pattern; | |
637 | unsigned int pattern_len; | |
638 | /* NOTE: also defined in find.c testcase. */ | |
639 | #define SEARCH_CHUNK_SIZE 16000 | |
640 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
641 | /* Buffer to hold memory contents for searching. */ | |
642 | gdb_byte *search_buf; | |
643 | unsigned search_buf_size; | |
644 | int found; | |
645 | CORE_ADDR found_addr; | |
646 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
647 | ||
aef93bd7 | 648 | pattern = malloc (packet_len); |
08388c79 DE |
649 | if (pattern == NULL) |
650 | { | |
5e1471f5 | 651 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
652 | strcpy (own_buf, "E00"); |
653 | return; | |
654 | } | |
655 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
656 | packet_len - cmd_name_len, | |
657 | &start_addr, &search_space_len, | |
658 | pattern, &pattern_len) < 0) | |
659 | { | |
660 | free (pattern); | |
5e1471f5 | 661 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
662 | strcpy (own_buf, "E00"); |
663 | return; | |
664 | } | |
665 | ||
666 | search_buf_size = chunk_size + pattern_len - 1; | |
667 | ||
668 | /* No point in trying to allocate a buffer larger than the search space. */ | |
669 | if (search_space_len < search_buf_size) | |
670 | search_buf_size = search_space_len; | |
671 | ||
aef93bd7 | 672 | search_buf = malloc (search_buf_size); |
08388c79 DE |
673 | if (search_buf == NULL) |
674 | { | |
675 | free (pattern); | |
5e1471f5 | 676 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
677 | strcpy (own_buf, "E00"); |
678 | return; | |
679 | } | |
680 | ||
681 | found = handle_search_memory_1 (start_addr, search_space_len, | |
682 | pattern, pattern_len, | |
683 | search_buf, chunk_size, search_buf_size, | |
684 | &found_addr); | |
685 | ||
686 | if (found > 0) | |
687 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
688 | else if (found == 0) | |
689 | strcpy (own_buf, "0"); | |
690 | else | |
691 | strcpy (own_buf, "E00"); | |
692 | ||
693 | free (search_buf); | |
694 | free (pattern); | |
695 | } | |
696 | ||
2d717e4f DJ |
697 | #define require_running(BUF) \ |
698 | if (!target_running ()) \ | |
699 | { \ | |
700 | write_enn (BUF); \ | |
701 | return; \ | |
702 | } | |
703 | ||
cdbfd419 PP |
704 | /* Handle monitor commands not handled by target-specific handlers. */ |
705 | ||
706 | static void | |
707 | handle_monitor_command (char *mon) | |
708 | { | |
709 | if (strcmp (mon, "set debug 1") == 0) | |
710 | { | |
711 | debug_threads = 1; | |
712 | monitor_output ("Debug output enabled.\n"); | |
713 | } | |
714 | else if (strcmp (mon, "set debug 0") == 0) | |
715 | { | |
716 | debug_threads = 0; | |
717 | monitor_output ("Debug output disabled.\n"); | |
718 | } | |
719 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
720 | { | |
721 | debug_hw_points = 1; | |
722 | monitor_output ("H/W point debugging output enabled.\n"); | |
723 | } | |
724 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
725 | { | |
726 | debug_hw_points = 0; | |
727 | monitor_output ("H/W point debugging output disabled.\n"); | |
728 | } | |
729 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
730 | { | |
731 | remote_debug = 1; | |
732 | monitor_output ("Protocol debug output enabled.\n"); | |
733 | } | |
734 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
735 | { | |
736 | remote_debug = 0; | |
737 | monitor_output ("Protocol debug output disabled.\n"); | |
738 | } | |
739 | else if (strcmp (mon, "help") == 0) | |
740 | monitor_show_help (); | |
741 | else if (strcmp (mon, "exit") == 0) | |
742 | exit_requested = 1; | |
743 | else | |
744 | { | |
745 | monitor_output ("Unknown monitor command.\n\n"); | |
746 | monitor_show_help (); | |
747 | write_enn (own_buf); | |
748 | } | |
749 | } | |
750 | ||
dc146f7c VP |
751 | static void |
752 | handle_threads_qxfer_proper (struct buffer *buffer) | |
753 | { | |
754 | struct inferior_list_entry *thread; | |
755 | ||
756 | buffer_grow_str (buffer, "<threads>\n"); | |
757 | ||
758 | for (thread = all_threads.head; thread; thread = thread->next) | |
759 | { | |
760 | ptid_t ptid = thread_to_gdb_id ((struct thread_info *)thread); | |
761 | char ptid_s[100]; | |
762 | int core = -1; | |
763 | char core_s[21]; | |
764 | ||
765 | write_ptid (ptid_s, ptid); | |
766 | ||
767 | if (the_target->core_of_thread) | |
768 | core = (*the_target->core_of_thread) (ptid); | |
769 | ||
770 | if (core != -1) | |
771 | { | |
772 | sprintf (core_s, "%d", core); | |
773 | buffer_xml_printf (buffer, "<thread id=\"%s\" core=\"%s\"/>\n", | |
774 | ptid_s, core_s); | |
775 | } | |
776 | else | |
777 | { | |
778 | buffer_xml_printf (buffer, "<thread id=\"%s\"/>\n", | |
779 | ptid_s); | |
780 | } | |
781 | } | |
782 | ||
783 | buffer_grow_str0 (buffer, "</threads>\n"); | |
784 | } | |
785 | ||
786 | static int | |
787 | handle_threads_qxfer (const char *annex, | |
788 | unsigned char *readbuf, | |
789 | CORE_ADDR offset, int length) | |
790 | { | |
791 | static char *result = 0; | |
792 | static unsigned int result_length = 0; | |
793 | ||
794 | if (annex && strcmp (annex, "") != 0) | |
795 | return 0; | |
796 | ||
797 | if (offset == 0) | |
798 | { | |
799 | struct buffer buffer; | |
800 | /* When asked for data at offset 0, generate everything and store into | |
801 | 'result'. Successive reads will be served off 'result'. */ | |
802 | if (result) | |
803 | free (result); | |
804 | ||
805 | buffer_init (&buffer); | |
806 | ||
807 | handle_threads_qxfer_proper (&buffer); | |
808 | ||
809 | result = buffer_finish (&buffer); | |
810 | result_length = strlen (result); | |
811 | buffer_free (&buffer); | |
812 | } | |
813 | ||
814 | if (offset >= result_length) | |
815 | { | |
816 | /* We're out of data. */ | |
817 | free (result); | |
818 | result = NULL; | |
819 | result_length = 0; | |
820 | return 0; | |
821 | } | |
822 | ||
823 | if (length > result_length - offset) | |
824 | length = result_length - offset; | |
825 | ||
826 | memcpy (readbuf, result + offset, length); | |
827 | ||
828 | return length; | |
829 | ||
830 | } | |
831 | ||
30ba68cb MS |
832 | /* Table used by the crc32 function to calcuate the checksum. */ |
833 | ||
834 | static unsigned int crc32_table[256] = | |
835 | {0, 0}; | |
836 | ||
837 | /* Compute 32 bit CRC from inferior memory. | |
838 | ||
839 | On success, return 32 bit CRC. | |
840 | On failure, return (unsigned long long) -1. */ | |
841 | ||
842 | static unsigned long long | |
843 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
844 | { | |
845 | if (!crc32_table[1]) | |
846 | { | |
847 | /* Initialize the CRC table and the decoding table. */ | |
848 | int i, j; | |
849 | unsigned int c; | |
850 | ||
851 | for (i = 0; i < 256; i++) | |
852 | { | |
853 | for (c = i << 24, j = 8; j > 0; --j) | |
854 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
855 | crc32_table[i] = c; | |
856 | } | |
857 | } | |
858 | ||
859 | while (len--) | |
860 | { | |
861 | unsigned char byte = 0; | |
862 | ||
863 | /* Return failure if memory read fails. */ | |
864 | if (read_inferior_memory (base, &byte, 1) != 0) | |
865 | return (unsigned long long) -1; | |
866 | ||
867 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ byte) & 255]; | |
868 | base++; | |
869 | } | |
870 | return (unsigned long long) crc; | |
871 | } | |
872 | ||
ce3a066d DJ |
873 | /* Handle all of the extended 'q' packets. */ |
874 | void | |
0e7f50da | 875 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 876 | { |
0d62e5e8 DJ |
877 | static struct inferior_list_entry *thread_ptr; |
878 | ||
bb63802a | 879 | /* Reply the current thread id. */ |
db42f210 | 880 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 881 | { |
95954743 | 882 | ptid_t gdb_id; |
2d717e4f | 883 | require_running (own_buf); |
bd99dc85 | 884 | |
95954743 PA |
885 | if (!ptid_equal (general_thread, null_ptid) |
886 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
887 | gdb_id = general_thread; |
888 | else | |
889 | { | |
890 | thread_ptr = all_threads.head; | |
891 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
892 | } | |
893 | ||
95954743 PA |
894 | sprintf (own_buf, "QC"); |
895 | own_buf += 2; | |
896 | own_buf = write_ptid (own_buf, gdb_id); | |
bb63802a UW |
897 | return; |
898 | } | |
899 | ||
ce3a066d DJ |
900 | if (strcmp ("qSymbol::", own_buf) == 0) |
901 | { | |
d3bbe7a0 PA |
902 | /* GDB is suggesting new symbols have been loaded. This may |
903 | mean a new shared library has been detected as loaded, so | |
904 | take the opportunity to check if breakpoints we think are | |
905 | inserted, still are. Note that it isn't guaranteed that | |
906 | we'll see this when a shared library is loaded, and nor will | |
907 | we see this for unloads (although breakpoints in unloaded | |
908 | libraries shouldn't trigger), as GDB may not find symbols for | |
909 | the library at all. We also re-validate breakpoints when we | |
910 | see a second GDB breakpoint for the same address, and or when | |
911 | we access breakpoint shadows. */ | |
912 | validate_breakpoints (); | |
913 | ||
2d717e4f | 914 | if (target_running () && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
915 | (*the_target->look_up_symbols) (); |
916 | ||
ce3a066d DJ |
917 | strcpy (own_buf, "OK"); |
918 | return; | |
919 | } | |
920 | ||
db42f210 | 921 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 922 | { |
db42f210 | 923 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 924 | { |
95954743 PA |
925 | ptid_t gdb_id; |
926 | ||
db42f210 PA |
927 | require_running (own_buf); |
928 | thread_ptr = all_threads.head; | |
95954743 PA |
929 | |
930 | *own_buf++ = 'm'; | |
931 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
932 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
933 | thread_ptr = thread_ptr->next; |
934 | return; | |
935 | } | |
db42f210 PA |
936 | |
937 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 938 | { |
95954743 PA |
939 | ptid_t gdb_id; |
940 | ||
db42f210 PA |
941 | require_running (own_buf); |
942 | if (thread_ptr != NULL) | |
943 | { | |
95954743 PA |
944 | *own_buf++ = 'm'; |
945 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
946 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
947 | thread_ptr = thread_ptr->next; |
948 | return; | |
949 | } | |
950 | else | |
951 | { | |
952 | sprintf (own_buf, "l"); | |
953 | return; | |
954 | } | |
0d62e5e8 DJ |
955 | } |
956 | } | |
aa691b87 | 957 | |
52fb6437 NS |
958 | if (the_target->read_offsets != NULL |
959 | && strcmp ("qOffsets", own_buf) == 0) | |
960 | { | |
961 | CORE_ADDR text, data; | |
2d717e4f DJ |
962 | |
963 | require_running (own_buf); | |
52fb6437 NS |
964 | if (the_target->read_offsets (&text, &data)) |
965 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
966 | (long)text, (long)data, (long)data); | |
967 | else | |
968 | write_enn (own_buf); | |
1b3f6016 | 969 | |
52fb6437 NS |
970 | return; |
971 | } | |
972 | ||
0e7f50da UW |
973 | if (the_target->qxfer_spu != NULL |
974 | && strncmp ("qXfer:spu:read:", own_buf, 15) == 0) | |
975 | { | |
976 | char *annex; | |
977 | int n; | |
978 | unsigned int len; | |
979 | CORE_ADDR ofs; | |
980 | unsigned char *spu_buf; | |
981 | ||
2d717e4f | 982 | require_running (own_buf); |
0e7f50da UW |
983 | strcpy (own_buf, "E00"); |
984 | if (decode_xfer_read (own_buf + 15, &annex, &ofs, &len) < 0) | |
78e5cee6 | 985 | return; |
0e7f50da UW |
986 | if (len > PBUFSIZ - 2) |
987 | len = PBUFSIZ - 2; | |
aef93bd7 | 988 | spu_buf = malloc (len + 1); |
0e7f50da | 989 | if (!spu_buf) |
1b3f6016 | 990 | return; |
0e7f50da UW |
991 | |
992 | n = (*the_target->qxfer_spu) (annex, spu_buf, NULL, ofs, len + 1); | |
1b3f6016 | 993 | if (n < 0) |
0e7f50da UW |
994 | write_enn (own_buf); |
995 | else if (n > len) | |
78e5cee6 | 996 | *new_packet_len_p = write_qxfer_response (own_buf, spu_buf, len, 1); |
1b3f6016 | 997 | else |
78e5cee6 | 998 | *new_packet_len_p = write_qxfer_response (own_buf, spu_buf, n, 0); |
0e7f50da UW |
999 | |
1000 | free (spu_buf); | |
1001 | return; | |
1002 | } | |
1003 | ||
1004 | if (the_target->qxfer_spu != NULL | |
1005 | && strncmp ("qXfer:spu:write:", own_buf, 16) == 0) | |
1006 | { | |
1007 | char *annex; | |
1008 | int n; | |
1009 | unsigned int len; | |
1010 | CORE_ADDR ofs; | |
1011 | unsigned char *spu_buf; | |
1012 | ||
2d717e4f | 1013 | require_running (own_buf); |
0e7f50da | 1014 | strcpy (own_buf, "E00"); |
aef93bd7 | 1015 | spu_buf = malloc (packet_len - 15); |
0e7f50da | 1016 | if (!spu_buf) |
1b3f6016 | 1017 | return; |
0e7f50da UW |
1018 | if (decode_xfer_write (own_buf + 16, packet_len - 16, &annex, |
1019 | &ofs, &len, spu_buf) < 0) | |
1020 | { | |
1021 | free (spu_buf); | |
1022 | return; | |
1023 | } | |
1024 | ||
1b3f6016 | 1025 | n = (*the_target->qxfer_spu) |
0e7f50da UW |
1026 | (annex, NULL, (unsigned const char *)spu_buf, ofs, len); |
1027 | if (n < 0) | |
1028 | write_enn (own_buf); | |
1029 | else | |
1030 | sprintf (own_buf, "%x", n); | |
1031 | ||
1032 | free (spu_buf); | |
1033 | return; | |
1034 | } | |
1035 | ||
aa691b87 | 1036 | if (the_target->read_auxv != NULL |
0876f84a | 1037 | && strncmp ("qXfer:auxv:read:", own_buf, 16) == 0) |
aa691b87 | 1038 | { |
0876f84a DJ |
1039 | unsigned char *data; |
1040 | int n; | |
aa691b87 RM |
1041 | CORE_ADDR ofs; |
1042 | unsigned int len; | |
0876f84a DJ |
1043 | char *annex; |
1044 | ||
2d717e4f DJ |
1045 | require_running (own_buf); |
1046 | ||
0876f84a DJ |
1047 | /* Reject any annex; grab the offset and length. */ |
1048 | if (decode_xfer_read (own_buf + 16, &annex, &ofs, &len) < 0 | |
1049 | || annex[0] != '\0') | |
1050 | { | |
1051 | strcpy (own_buf, "E00"); | |
1052 | return; | |
1053 | } | |
1054 | ||
1055 | /* Read one extra byte, as an indicator of whether there is | |
1056 | more. */ | |
1057 | if (len > PBUFSIZ - 2) | |
1058 | len = PBUFSIZ - 2; | |
aef93bd7 DE |
1059 | data = malloc (len + 1); |
1060 | if (data == NULL) | |
1061 | { | |
1062 | write_enn (own_buf); | |
1063 | return; | |
1064 | } | |
0876f84a | 1065 | n = (*the_target->read_auxv) (ofs, data, len + 1); |
000ef4f0 DJ |
1066 | if (n < 0) |
1067 | write_enn (own_buf); | |
1068 | else if (n > len) | |
0876f84a | 1069 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); |
aa691b87 | 1070 | else |
0876f84a DJ |
1071 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); |
1072 | ||
1073 | free (data); | |
1074 | ||
aa691b87 RM |
1075 | return; |
1076 | } | |
1077 | ||
23181151 DJ |
1078 | if (strncmp ("qXfer:features:read:", own_buf, 20) == 0) |
1079 | { | |
1080 | CORE_ADDR ofs; | |
1081 | unsigned int len, total_len; | |
1082 | const char *document; | |
1083 | char *annex; | |
1084 | ||
2d717e4f DJ |
1085 | require_running (own_buf); |
1086 | ||
fb1e4ffc DJ |
1087 | /* Grab the annex, offset, and length. */ |
1088 | if (decode_xfer_read (own_buf + 20, &annex, &ofs, &len) < 0) | |
1089 | { | |
1090 | strcpy (own_buf, "E00"); | |
1091 | return; | |
1092 | } | |
1093 | ||
1094 | /* Now grab the correct annex. */ | |
1095 | document = get_features_xml (annex); | |
1096 | if (document == NULL) | |
23181151 DJ |
1097 | { |
1098 | strcpy (own_buf, "E00"); | |
1099 | return; | |
1100 | } | |
1101 | ||
1102 | total_len = strlen (document); | |
1103 | if (len > PBUFSIZ - 2) | |
1104 | len = PBUFSIZ - 2; | |
1105 | ||
1106 | if (ofs > total_len) | |
1107 | write_enn (own_buf); | |
1108 | else if (len < total_len - ofs) | |
1109 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, | |
1110 | len, 1); | |
1111 | else | |
1112 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, | |
1113 | total_len - ofs, 0); | |
1114 | ||
1115 | return; | |
1116 | } | |
1117 | ||
255e7678 DJ |
1118 | if (strncmp ("qXfer:libraries:read:", own_buf, 21) == 0) |
1119 | { | |
1120 | CORE_ADDR ofs; | |
1121 | unsigned int len, total_len; | |
1122 | char *document, *p; | |
1123 | struct inferior_list_entry *dll_ptr; | |
1124 | char *annex; | |
1125 | ||
2d717e4f DJ |
1126 | require_running (own_buf); |
1127 | ||
255e7678 DJ |
1128 | /* Reject any annex; grab the offset and length. */ |
1129 | if (decode_xfer_read (own_buf + 21, &annex, &ofs, &len) < 0 | |
1130 | || annex[0] != '\0') | |
1131 | { | |
1132 | strcpy (own_buf, "E00"); | |
1133 | return; | |
1134 | } | |
1135 | ||
1136 | /* Over-estimate the necessary memory. Assume that every character | |
1137 | in the library name must be escaped. */ | |
1138 | total_len = 64; | |
1139 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
1140 | total_len += 128 + 6 * strlen (((struct dll_info *) dll_ptr)->name); | |
1141 | ||
aef93bd7 DE |
1142 | document = malloc (total_len); |
1143 | if (document == NULL) | |
1144 | { | |
1145 | write_enn (own_buf); | |
1146 | return; | |
1147 | } | |
255e7678 DJ |
1148 | strcpy (document, "<library-list>\n"); |
1149 | p = document + strlen (document); | |
1150 | ||
1151 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
1152 | { | |
1153 | struct dll_info *dll = (struct dll_info *) dll_ptr; | |
1154 | char *name; | |
1155 | ||
1156 | strcpy (p, " <library name=\""); | |
1157 | p = p + strlen (p); | |
1158 | name = xml_escape_text (dll->name); | |
1159 | strcpy (p, name); | |
1160 | free (name); | |
1161 | p = p + strlen (p); | |
1162 | strcpy (p, "\"><segment address=\""); | |
1163 | p = p + strlen (p); | |
1164 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1165 | p = p + strlen (p); | |
1166 | strcpy (p, "\"/></library>\n"); | |
1167 | p = p + strlen (p); | |
1168 | } | |
1169 | ||
1170 | strcpy (p, "</library-list>\n"); | |
1171 | ||
1172 | total_len = strlen (document); | |
1173 | if (len > PBUFSIZ - 2) | |
1174 | len = PBUFSIZ - 2; | |
1175 | ||
1176 | if (ofs > total_len) | |
1177 | write_enn (own_buf); | |
1178 | else if (len < total_len - ofs) | |
1179 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, | |
1180 | len, 1); | |
1181 | else | |
1182 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, | |
1183 | total_len - ofs, 0); | |
1184 | ||
1185 | free (document); | |
1186 | return; | |
1187 | } | |
1188 | ||
07e059b5 VP |
1189 | if (the_target->qxfer_osdata != NULL |
1190 | && strncmp ("qXfer:osdata:read:", own_buf, 18) == 0) | |
1191 | { | |
1192 | char *annex; | |
1193 | int n; | |
1194 | unsigned int len; | |
1195 | CORE_ADDR ofs; | |
1196 | unsigned char *workbuf; | |
1197 | ||
1198 | strcpy (own_buf, "E00"); | |
1199 | if (decode_xfer_read (own_buf + 18, &annex, &ofs, &len) < 0) | |
78e5cee6 | 1200 | return; |
07e059b5 | 1201 | if (len > PBUFSIZ - 2) |
78e5cee6 | 1202 | len = PBUFSIZ - 2; |
aef93bd7 | 1203 | workbuf = malloc (len + 1); |
07e059b5 | 1204 | if (!workbuf) |
1b3f6016 | 1205 | return; |
07e059b5 VP |
1206 | |
1207 | n = (*the_target->qxfer_osdata) (annex, workbuf, NULL, ofs, len + 1); | |
1208 | if (n < 0) | |
78e5cee6 | 1209 | write_enn (own_buf); |
07e059b5 | 1210 | else if (n > len) |
78e5cee6 | 1211 | *new_packet_len_p = write_qxfer_response (own_buf, workbuf, len, 1); |
07e059b5 | 1212 | else |
78e5cee6 | 1213 | *new_packet_len_p = write_qxfer_response (own_buf, workbuf, n, 0); |
07e059b5 VP |
1214 | |
1215 | free (workbuf); | |
1216 | return; | |
1217 | } | |
1218 | ||
4aa995e1 PA |
1219 | if (the_target->qxfer_siginfo != NULL |
1220 | && strncmp ("qXfer:siginfo:read:", own_buf, 19) == 0) | |
1221 | { | |
1222 | unsigned char *data; | |
1223 | int n; | |
1224 | CORE_ADDR ofs; | |
1225 | unsigned int len; | |
1226 | char *annex; | |
1227 | ||
1228 | require_running (own_buf); | |
1229 | ||
1230 | /* Reject any annex; grab the offset and length. */ | |
1231 | if (decode_xfer_read (own_buf + 19, &annex, &ofs, &len) < 0 | |
1232 | || annex[0] != '\0') | |
1233 | { | |
1234 | strcpy (own_buf, "E00"); | |
1235 | return; | |
1236 | } | |
1237 | ||
1238 | /* Read one extra byte, as an indicator of whether there is | |
1239 | more. */ | |
1240 | if (len > PBUFSIZ - 2) | |
1241 | len = PBUFSIZ - 2; | |
1242 | data = malloc (len + 1); | |
1243 | if (!data) | |
1b3f6016 | 1244 | return; |
4aa995e1 PA |
1245 | n = (*the_target->qxfer_siginfo) (annex, data, NULL, ofs, len + 1); |
1246 | if (n < 0) | |
1247 | write_enn (own_buf); | |
1248 | else if (n > len) | |
1249 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1250 | else | |
1251 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1252 | ||
1253 | free (data); | |
1254 | return; | |
1255 | } | |
1256 | ||
1257 | if (the_target->qxfer_siginfo != NULL | |
1258 | && strncmp ("qXfer:siginfo:write:", own_buf, 20) == 0) | |
1259 | { | |
1260 | char *annex; | |
1261 | int n; | |
1262 | unsigned int len; | |
1263 | CORE_ADDR ofs; | |
1264 | unsigned char *data; | |
1265 | ||
1266 | require_running (own_buf); | |
1267 | ||
1268 | strcpy (own_buf, "E00"); | |
1269 | data = malloc (packet_len - 19); | |
1270 | if (!data) | |
1b3f6016 | 1271 | return; |
4aa995e1 PA |
1272 | if (decode_xfer_write (own_buf + 20, packet_len - 20, &annex, |
1273 | &ofs, &len, data) < 0) | |
1274 | { | |
1275 | free (data); | |
1276 | return; | |
1277 | } | |
1278 | ||
1279 | n = (*the_target->qxfer_siginfo) | |
1280 | (annex, NULL, (unsigned const char *)data, ofs, len); | |
1281 | if (n < 0) | |
1282 | write_enn (own_buf); | |
1283 | else | |
1284 | sprintf (own_buf, "%x", n); | |
1285 | ||
1286 | free (data); | |
1287 | return; | |
1288 | } | |
1289 | ||
dc146f7c VP |
1290 | if (strncmp ("qXfer:threads:read:", own_buf, 19) == 0) |
1291 | { | |
1292 | unsigned char *data; | |
1293 | int n; | |
1294 | CORE_ADDR ofs; | |
1295 | unsigned int len; | |
1296 | char *annex; | |
1297 | ||
1298 | require_running (own_buf); | |
1299 | ||
1300 | /* Reject any annex; grab the offset and length. */ | |
1301 | if (decode_xfer_read (own_buf + 19, &annex, &ofs, &len) < 0 | |
1302 | || annex[0] != '\0') | |
1303 | { | |
1304 | strcpy (own_buf, "E00"); | |
1305 | return; | |
1306 | } | |
1307 | ||
1308 | /* Read one extra byte, as an indicator of whether there is | |
1309 | more. */ | |
1310 | if (len > PBUFSIZ - 2) | |
1311 | len = PBUFSIZ - 2; | |
1312 | data = malloc (len + 1); | |
1313 | if (!data) | |
1314 | return; | |
1315 | n = handle_threads_qxfer (annex, data, ofs, len + 1); | |
1316 | if (n < 0) | |
1317 | write_enn (own_buf); | |
1318 | else if (n > len) | |
1319 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1320 | else | |
1321 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1322 | ||
1323 | free (data); | |
1324 | return; | |
1325 | } | |
1326 | ||
be2a5f71 DJ |
1327 | /* Protocol features query. */ |
1328 | if (strncmp ("qSupported", own_buf, 10) == 0 | |
1329 | && (own_buf[10] == ':' || own_buf[10] == '\0')) | |
1330 | { | |
95954743 PA |
1331 | char *p = &own_buf[10]; |
1332 | ||
1570b33e L |
1333 | /* Start processing qSupported packet. */ |
1334 | target_process_qsupported (NULL); | |
1335 | ||
95954743 PA |
1336 | /* Process each feature being provided by GDB. The first |
1337 | feature will follow a ':', and latter features will follow | |
1338 | ';'. */ | |
1339 | if (*p == ':') | |
1340 | for (p = strtok (p + 1, ";"); | |
1341 | p != NULL; | |
1342 | p = strtok (NULL, ";")) | |
1343 | { | |
95954743 | 1344 | if (strcmp (p, "multiprocess+") == 0) |
cf8fd78b PA |
1345 | { |
1346 | /* GDB supports and wants multi-process support if | |
1347 | possible. */ | |
1348 | if (target_supports_multi_process ()) | |
1349 | multi_process = 1; | |
1350 | } | |
1570b33e L |
1351 | else |
1352 | target_process_qsupported (p); | |
95954743 PA |
1353 | } |
1354 | ||
89be2091 | 1355 | sprintf (own_buf, "PacketSize=%x;QPassSignals+", PBUFSIZ - 1); |
0876f84a | 1356 | |
255e7678 DJ |
1357 | /* We do not have any hook to indicate whether the target backend |
1358 | supports qXfer:libraries:read, so always report it. */ | |
1359 | strcat (own_buf, ";qXfer:libraries:read+"); | |
1360 | ||
0876f84a | 1361 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 1362 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 1363 | |
0e7f50da UW |
1364 | if (the_target->qxfer_spu != NULL) |
1365 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 1366 | |
4aa995e1 PA |
1367 | if (the_target->qxfer_siginfo != NULL) |
1368 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
1369 | ||
221c031f UW |
1370 | /* We always report qXfer:features:read, as targets may |
1371 | install XML files on a subsequent call to arch_setup. | |
1372 | If we reported to GDB on startup that we don't support | |
1373 | qXfer:feature:read at all, we will never be re-queried. */ | |
1374 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 1375 | |
a6f3e723 SL |
1376 | if (transport_is_reliable) |
1377 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
1378 | |
1379 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 1380 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 1381 | |
cf8fd78b PA |
1382 | if (target_supports_multi_process ()) |
1383 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 1384 | |
bd99dc85 PA |
1385 | if (target_supports_non_stop ()) |
1386 | strcat (own_buf, ";QNonStop+"); | |
1387 | ||
dc146f7c VP |
1388 | strcat (own_buf, ";qXfer:threads:read+"); |
1389 | ||
219f2f23 PA |
1390 | if (target_supports_tracepoints ()) |
1391 | { | |
1392 | strcat (own_buf, ";ConditionalTracepoints+"); | |
1393 | strcat (own_buf, ";TraceStateVariables+"); | |
1394 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 1395 | strcat (own_buf, ";DisconnectedTracing+"); |
219f2f23 PA |
1396 | } |
1397 | ||
be2a5f71 DJ |
1398 | return; |
1399 | } | |
1400 | ||
dae5f5cf DJ |
1401 | /* Thread-local storage support. */ |
1402 | if (the_target->get_tls_address != NULL | |
1403 | && strncmp ("qGetTLSAddr:", own_buf, 12) == 0) | |
1404 | { | |
1405 | char *p = own_buf + 12; | |
5b1c542e | 1406 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 1407 | int i, err; |
95954743 | 1408 | ptid_t ptid = null_ptid; |
dae5f5cf | 1409 | |
2d717e4f DJ |
1410 | require_running (own_buf); |
1411 | ||
dae5f5cf DJ |
1412 | for (i = 0; i < 3; i++) |
1413 | { | |
1414 | char *p2; | |
1415 | int len; | |
1416 | ||
1417 | if (p == NULL) | |
1418 | break; | |
1419 | ||
1420 | p2 = strchr (p, ','); | |
1421 | if (p2) | |
1422 | { | |
1423 | len = p2 - p; | |
1424 | p2++; | |
1425 | } | |
1426 | else | |
1427 | { | |
1428 | len = strlen (p); | |
1429 | p2 = NULL; | |
1430 | } | |
1431 | ||
5b1c542e | 1432 | if (i == 0) |
95954743 | 1433 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
1434 | else |
1435 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
1436 | p = p2; |
1437 | } | |
1438 | ||
1439 | if (p != NULL || i < 3) | |
1440 | err = 1; | |
1441 | else | |
1442 | { | |
e09875d4 | 1443 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
1444 | |
1445 | if (thread == NULL) | |
1446 | err = 2; | |
1447 | else | |
5b1c542e | 1448 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
1449 | &address); |
1450 | } | |
1451 | ||
1452 | if (err == 0) | |
1453 | { | |
1454 | sprintf (own_buf, "%llx", address); | |
1455 | return; | |
1456 | } | |
1457 | else if (err > 0) | |
1458 | { | |
1459 | write_enn (own_buf); | |
1460 | return; | |
1461 | } | |
1462 | ||
1463 | /* Otherwise, pretend we do not understand this packet. */ | |
1464 | } | |
1465 | ||
c74d0ad8 DJ |
1466 | /* Handle "monitor" commands. */ |
1467 | if (strncmp ("qRcmd,", own_buf, 6) == 0) | |
1468 | { | |
aef93bd7 | 1469 | char *mon = malloc (PBUFSIZ); |
c74d0ad8 DJ |
1470 | int len = strlen (own_buf + 6); |
1471 | ||
aef93bd7 DE |
1472 | if (mon == NULL) |
1473 | { | |
1474 | write_enn (own_buf); | |
1475 | return; | |
1476 | } | |
1477 | ||
d41b6bb4 | 1478 | if ((len % 2) != 0 || unhexify (mon, own_buf + 6, len / 2) != len / 2) |
c74d0ad8 DJ |
1479 | { |
1480 | write_enn (own_buf); | |
1481 | free (mon); | |
1482 | return; | |
1483 | } | |
1484 | mon[len / 2] = '\0'; | |
1485 | ||
1486 | write_ok (own_buf); | |
1487 | ||
cdbfd419 PP |
1488 | if (the_target->handle_monitor_command == NULL |
1489 | || (*the_target->handle_monitor_command) (mon) == 0) | |
1490 | /* Default processing. */ | |
1491 | handle_monitor_command (mon); | |
c74d0ad8 DJ |
1492 | |
1493 | free (mon); | |
1494 | return; | |
1495 | } | |
1496 | ||
08388c79 DE |
1497 | if (strncmp ("qSearch:memory:", own_buf, sizeof ("qSearch:memory:") - 1) == 0) |
1498 | { | |
1499 | require_running (own_buf); | |
1500 | handle_search_memory (own_buf, packet_len); | |
1501 | return; | |
1502 | } | |
1503 | ||
95954743 PA |
1504 | if (strcmp (own_buf, "qAttached") == 0 |
1505 | || strncmp (own_buf, "qAttached:", sizeof ("qAttached:") - 1) == 0) | |
0b16c5cf | 1506 | { |
95954743 PA |
1507 | struct process_info *process; |
1508 | ||
1509 | if (own_buf[sizeof ("qAttached") - 1]) | |
1510 | { | |
1511 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
1512 | process = (struct process_info *) | |
1513 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
1514 | } | |
1515 | else | |
1516 | { | |
1517 | require_running (own_buf); | |
1518 | process = current_process (); | |
1519 | } | |
1520 | ||
1521 | if (process == NULL) | |
1522 | { | |
1523 | write_enn (own_buf); | |
1524 | return; | |
1525 | } | |
1526 | ||
1527 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
1528 | return; |
1529 | } | |
1530 | ||
30ba68cb MS |
1531 | if (strncmp ("qCRC:", own_buf, 5) == 0) |
1532 | { | |
1533 | /* CRC check (compare-section). */ | |
1534 | char *comma; | |
1535 | CORE_ADDR base; | |
1536 | int len; | |
1537 | unsigned long long crc; | |
1538 | ||
1539 | require_running (own_buf); | |
2280c721 | 1540 | base = strtoul (own_buf + 5, &comma, 16); |
30ba68cb MS |
1541 | if (*comma++ != ',') |
1542 | { | |
1543 | write_enn (own_buf); | |
1544 | return; | |
1545 | } | |
1546 | len = strtoul (comma, NULL, 16); | |
1547 | crc = crc32 (base, len, 0xffffffff); | |
1548 | /* Check for memory failure. */ | |
1549 | if (crc == (unsigned long long) -1) | |
1550 | { | |
1551 | write_enn (own_buf); | |
1552 | return; | |
1553 | } | |
1554 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
1555 | return; | |
1556 | } | |
1557 | ||
219f2f23 PA |
1558 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
1559 | return; | |
1560 | ||
ce3a066d DJ |
1561 | /* Otherwise we didn't know what packet it was. Say we didn't |
1562 | understand it. */ | |
1563 | own_buf[0] = 0; | |
1564 | } | |
1565 | ||
64386c31 DJ |
1566 | /* Parse vCont packets. */ |
1567 | void | |
5b1c542e | 1568 | handle_v_cont (char *own_buf) |
64386c31 DJ |
1569 | { |
1570 | char *p, *q; | |
1571 | int n = 0, i = 0; | |
2bd7c093 | 1572 | struct thread_resume *resume_info; |
95954743 | 1573 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
1574 | |
1575 | /* Count the number of semicolons in the packet. There should be one | |
1576 | for every action. */ | |
1577 | p = &own_buf[5]; | |
1578 | while (p) | |
1579 | { | |
1580 | n++; | |
1581 | p++; | |
1582 | p = strchr (p, ';'); | |
1583 | } | |
2bd7c093 PA |
1584 | |
1585 | resume_info = malloc (n * sizeof (resume_info[0])); | |
aef93bd7 DE |
1586 | if (resume_info == NULL) |
1587 | goto err; | |
64386c31 | 1588 | |
64386c31 | 1589 | p = &own_buf[5]; |
64386c31 DJ |
1590 | while (*p) |
1591 | { | |
1592 | p++; | |
1593 | ||
64386c31 | 1594 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 1595 | resume_info[i].kind = resume_step; |
64386c31 | 1596 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
1597 | resume_info[i].kind = resume_continue; |
1598 | else if (p[0] == 't') | |
1599 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
1600 | else |
1601 | goto err; | |
1602 | ||
1603 | if (p[0] == 'S' || p[0] == 'C') | |
1604 | { | |
1605 | int sig; | |
1606 | sig = strtol (p + 1, &q, 16); | |
1607 | if (p == q) | |
1608 | goto err; | |
1609 | p = q; | |
1610 | ||
1611 | if (!target_signal_to_host_p (sig)) | |
1612 | goto err; | |
1613 | resume_info[i].sig = target_signal_to_host (sig); | |
1614 | } | |
1615 | else | |
1616 | { | |
1617 | resume_info[i].sig = 0; | |
1618 | p = p + 1; | |
1619 | } | |
1620 | ||
1621 | if (p[0] == 0) | |
1622 | { | |
95954743 | 1623 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
1624 | default_action = resume_info[i]; |
1625 | ||
1626 | /* Note: we don't increment i here, we'll overwrite this entry | |
1627 | the next time through. */ | |
1628 | } | |
1629 | else if (p[0] == ':') | |
1630 | { | |
95954743 | 1631 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 1632 | |
64386c31 DJ |
1633 | if (p == q) |
1634 | goto err; | |
1635 | p = q; | |
1636 | if (p[0] != ';' && p[0] != 0) | |
1637 | goto err; | |
1638 | ||
95954743 | 1639 | resume_info[i].thread = ptid; |
a06660f7 | 1640 | |
64386c31 DJ |
1641 | i++; |
1642 | } | |
1643 | } | |
1644 | ||
2bd7c093 PA |
1645 | if (i < n) |
1646 | resume_info[i] = default_action; | |
64386c31 DJ |
1647 | |
1648 | /* Still used in occasional places in the backend. */ | |
bd99dc85 | 1649 | if (n == 1 |
95954743 | 1650 | && !ptid_equal (resume_info[0].thread, minus_one_ptid) |
bd99dc85 | 1651 | && resume_info[0].kind != resume_stop) |
64386c31 DJ |
1652 | cont_thread = resume_info[0].thread; |
1653 | else | |
95954743 | 1654 | cont_thread = minus_one_ptid; |
dc3f8883 | 1655 | set_desired_inferior (0); |
64386c31 | 1656 | |
bd99dc85 PA |
1657 | if (!non_stop) |
1658 | enable_async_io (); | |
1659 | ||
2bd7c093 | 1660 | (*the_target->resume) (resume_info, n); |
64386c31 DJ |
1661 | |
1662 | free (resume_info); | |
1663 | ||
bd99dc85 PA |
1664 | if (non_stop) |
1665 | write_ok (own_buf); | |
1666 | else | |
1667 | { | |
95954743 | 1668 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
bd99dc85 PA |
1669 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
1670 | disable_async_io (); | |
1671 | } | |
64386c31 DJ |
1672 | return; |
1673 | ||
1674 | err: | |
255e7678 | 1675 | write_enn (own_buf); |
64386c31 DJ |
1676 | free (resume_info); |
1677 | return; | |
1678 | } | |
1679 | ||
2d717e4f DJ |
1680 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
1681 | int | |
5b1c542e | 1682 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
1683 | { |
1684 | int pid; | |
1685 | ||
1686 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 1687 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 1688 | { |
aeba519e PA |
1689 | /* Don't report shared library events after attaching, even if |
1690 | some libraries are preloaded. GDB will always poll the | |
1691 | library list. Avoids the "stopped by shared library event" | |
1692 | notice on the GDB side. */ | |
1693 | dlls_changed = 0; | |
bd99dc85 PA |
1694 | |
1695 | if (non_stop) | |
1696 | { | |
1697 | /* In non-stop, we don't send a resume reply. Stop events | |
1698 | will follow up using the normal notification | |
1699 | mechanism. */ | |
1700 | write_ok (own_buf); | |
1701 | } | |
1702 | else | |
1703 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
1704 | ||
2d717e4f DJ |
1705 | return 1; |
1706 | } | |
1707 | else | |
1708 | { | |
1709 | write_enn (own_buf); | |
1710 | return 0; | |
1711 | } | |
1712 | } | |
1713 | ||
1714 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
1715 | static int | |
5b1c542e | 1716 | handle_v_run (char *own_buf) |
2d717e4f | 1717 | { |
aef93bd7 | 1718 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
1719 | int i, new_argc; |
1720 | ||
1721 | new_argc = 0; | |
1722 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
1723 | { | |
1724 | p++; | |
1725 | new_argc++; | |
1726 | } | |
1727 | ||
aef93bd7 DE |
1728 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
1729 | if (new_argv == NULL) | |
1730 | { | |
1731 | write_enn (own_buf); | |
1732 | return 0; | |
1733 | } | |
1734 | ||
2d717e4f DJ |
1735 | i = 0; |
1736 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
1737 | { | |
1738 | next_p = strchr (p, ';'); | |
1739 | if (next_p == NULL) | |
1740 | next_p = p + strlen (p); | |
1741 | ||
1742 | if (i == 0 && p == next_p) | |
1743 | new_argv[i] = NULL; | |
1744 | else | |
1745 | { | |
aef93bd7 | 1746 | /* FIXME: Fail request if out of memory instead of dying. */ |
bca929d3 | 1747 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
2d717e4f DJ |
1748 | unhexify (new_argv[i], p, (next_p - p) / 2); |
1749 | new_argv[i][(next_p - p) / 2] = '\0'; | |
1750 | } | |
1751 | ||
1752 | if (*next_p) | |
1753 | next_p++; | |
1754 | i++; | |
1755 | } | |
1756 | new_argv[i] = NULL; | |
1757 | ||
1758 | if (new_argv[0] == NULL) | |
1759 | { | |
f142445f DJ |
1760 | /* GDB didn't specify a program to run. Use the program from the |
1761 | last run with the new argument list. */ | |
9b710a42 | 1762 | |
2d717e4f DJ |
1763 | if (program_argv == NULL) |
1764 | { | |
aef93bd7 | 1765 | /* FIXME: new_argv memory leak */ |
2d717e4f DJ |
1766 | write_enn (own_buf); |
1767 | return 0; | |
1768 | } | |
1769 | ||
aef93bd7 DE |
1770 | new_argv[0] = strdup (program_argv[0]); |
1771 | if (new_argv[0] == NULL) | |
1772 | { | |
1773 | /* FIXME: new_argv memory leak */ | |
1774 | write_enn (own_buf); | |
1775 | return 0; | |
1b3f6016 | 1776 | } |
2d717e4f | 1777 | } |
f142445f | 1778 | |
aef93bd7 DE |
1779 | /* Free the old argv and install the new one. */ |
1780 | freeargv (program_argv); | |
f142445f | 1781 | program_argv = new_argv; |
2d717e4f | 1782 | |
5b1c542e PA |
1783 | start_inferior (program_argv); |
1784 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 1785 | { |
5b1c542e | 1786 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
1787 | |
1788 | /* In non-stop, sending a resume reply doesn't set the general | |
1789 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
1790 | query which is the main thread of the new inferior. */ | |
1791 | if (non_stop) | |
1792 | general_thread = last_ptid; | |
1793 | ||
2d717e4f DJ |
1794 | return 1; |
1795 | } | |
1796 | else | |
1797 | { | |
1798 | write_enn (own_buf); | |
1799 | return 0; | |
1800 | } | |
1801 | } | |
1802 | ||
95954743 PA |
1803 | /* Kill process. Return 1 if successful, 0 if failure. */ |
1804 | int | |
1805 | handle_v_kill (char *own_buf) | |
1806 | { | |
1807 | int pid; | |
1808 | char *p = &own_buf[6]; | |
0f54c268 PM |
1809 | if (multi_process) |
1810 | pid = strtol (p, NULL, 16); | |
1811 | else | |
1812 | pid = signal_pid; | |
95954743 PA |
1813 | if (pid != 0 && kill_inferior (pid) == 0) |
1814 | { | |
1815 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
1816 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
1817 | last_ptid = pid_to_ptid (pid); | |
1818 | discard_queued_stop_replies (pid); | |
1819 | write_ok (own_buf); | |
1820 | return 1; | |
1821 | } | |
1822 | else | |
1823 | { | |
1824 | write_enn (own_buf); | |
1825 | return 0; | |
1826 | } | |
1827 | } | |
1828 | ||
bd99dc85 PA |
1829 | /* Handle a 'vStopped' packet. */ |
1830 | static void | |
1831 | handle_v_stopped (char *own_buf) | |
1832 | { | |
1833 | /* If we're waiting for GDB to acknowledge a pending stop reply, | |
1834 | consider that done. */ | |
1835 | if (notif_queue) | |
1836 | { | |
1837 | struct vstop_notif *head; | |
1838 | ||
1839 | if (remote_debug) | |
95954743 PA |
1840 | fprintf (stderr, "vStopped: acking %s\n", |
1841 | target_pid_to_str (notif_queue->ptid)); | |
bd99dc85 PA |
1842 | |
1843 | head = notif_queue; | |
1844 | notif_queue = notif_queue->next; | |
1845 | free (head); | |
1846 | } | |
1847 | ||
1848 | /* Push another stop reply, or if there are no more left, an OK. */ | |
1849 | send_next_stop_reply (own_buf); | |
1850 | } | |
1851 | ||
64386c31 DJ |
1852 | /* Handle all of the extended 'v' packets. */ |
1853 | void | |
5b1c542e | 1854 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 1855 | { |
db42f210 | 1856 | if (!disable_packet_vCont) |
64386c31 | 1857 | { |
db42f210 PA |
1858 | if (strncmp (own_buf, "vCont;", 6) == 0) |
1859 | { | |
1860 | require_running (own_buf); | |
5b1c542e | 1861 | handle_v_cont (own_buf); |
db42f210 PA |
1862 | return; |
1863 | } | |
64386c31 | 1864 | |
db42f210 PA |
1865 | if (strncmp (own_buf, "vCont?", 6) == 0) |
1866 | { | |
bd99dc85 | 1867 | strcpy (own_buf, "vCont;c;C;s;S;t"); |
db42f210 PA |
1868 | return; |
1869 | } | |
64386c31 DJ |
1870 | } |
1871 | ||
a6b151f1 DJ |
1872 | if (strncmp (own_buf, "vFile:", 6) == 0 |
1873 | && handle_vFile (own_buf, packet_len, new_packet_len)) | |
1874 | return; | |
1875 | ||
2d717e4f DJ |
1876 | if (strncmp (own_buf, "vAttach;", 8) == 0) |
1877 | { | |
95954743 | 1878 | if (!multi_process && target_running ()) |
2d717e4f | 1879 | { |
fd96d250 PA |
1880 | fprintf (stderr, "Already debugging a process\n"); |
1881 | write_enn (own_buf); | |
1882 | return; | |
2d717e4f | 1883 | } |
5b1c542e | 1884 | handle_v_attach (own_buf); |
2d717e4f DJ |
1885 | return; |
1886 | } | |
1887 | ||
1888 | if (strncmp (own_buf, "vRun;", 5) == 0) | |
1889 | { | |
95954743 | 1890 | if (!multi_process && target_running ()) |
2d717e4f | 1891 | { |
fd96d250 PA |
1892 | fprintf (stderr, "Already debugging a process\n"); |
1893 | write_enn (own_buf); | |
1894 | return; | |
2d717e4f | 1895 | } |
5b1c542e | 1896 | handle_v_run (own_buf); |
2d717e4f DJ |
1897 | return; |
1898 | } | |
1899 | ||
95954743 PA |
1900 | if (strncmp (own_buf, "vKill;", 6) == 0) |
1901 | { | |
1902 | if (!target_running ()) | |
1903 | { | |
1904 | fprintf (stderr, "No process to kill\n"); | |
1905 | write_enn (own_buf); | |
1906 | return; | |
1907 | } | |
1908 | handle_v_kill (own_buf); | |
1909 | return; | |
1910 | } | |
1911 | ||
bd99dc85 PA |
1912 | if (strncmp (own_buf, "vStopped", 8) == 0) |
1913 | { | |
1914 | handle_v_stopped (own_buf); | |
1915 | return; | |
1916 | } | |
1917 | ||
64386c31 DJ |
1918 | /* Otherwise we didn't know what packet it was. Say we didn't |
1919 | understand it. */ | |
1920 | own_buf[0] = 0; | |
1921 | return; | |
1922 | } | |
1923 | ||
bd99dc85 PA |
1924 | /* Resume inferior and wait for another event. In non-stop mode, |
1925 | don't really wait here, but return immediatelly to the event | |
1926 | loop. */ | |
64386c31 | 1927 | void |
5b1c542e | 1928 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
1929 | { |
1930 | struct thread_resume resume_info[2]; | |
1931 | int n = 0; | |
2bd7c093 | 1932 | int valid_cont_thread; |
a20d5e98 DJ |
1933 | |
1934 | set_desired_inferior (0); | |
64386c31 | 1935 | |
95954743 PA |
1936 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
1937 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
1938 | |
1939 | if (step || sig || valid_cont_thread) | |
64386c31 DJ |
1940 | { |
1941 | resume_info[0].thread | |
1942 | = ((struct inferior_list_entry *) current_inferior)->id; | |
bd99dc85 PA |
1943 | if (step) |
1944 | resume_info[0].kind = resume_step; | |
1945 | else | |
1946 | resume_info[0].kind = resume_continue; | |
64386c31 | 1947 | resume_info[0].sig = sig; |
64386c31 DJ |
1948 | n++; |
1949 | } | |
2bd7c093 PA |
1950 | |
1951 | if (!valid_cont_thread) | |
1952 | { | |
95954743 | 1953 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 1954 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
1955 | resume_info[n].sig = 0; |
1956 | n++; | |
1957 | } | |
64386c31 | 1958 | |
bd99dc85 PA |
1959 | if (!non_stop) |
1960 | enable_async_io (); | |
1961 | ||
2bd7c093 | 1962 | (*the_target->resume) (resume_info, n); |
bd99dc85 PA |
1963 | |
1964 | if (non_stop) | |
1965 | write_ok (own_buf); | |
1966 | else | |
1967 | { | |
95954743 | 1968 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
bd99dc85 PA |
1969 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
1970 | disable_async_io (); | |
1971 | } | |
1972 | } | |
1973 | ||
1974 | /* Callback for for_each_inferior. Make a new stop reply for each | |
1975 | stopped thread. */ | |
1976 | ||
95954743 PA |
1977 | static int |
1978 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 1979 | { |
8336d594 | 1980 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 1981 | |
8336d594 PA |
1982 | /* For now, assume targets that don't have this callback also don't |
1983 | manage the thread's last_status field. */ | |
1984 | if (the_target->thread_stopped == NULL) | |
95954743 PA |
1985 | { |
1986 | struct target_waitstatus status; | |
1987 | ||
1988 | status.kind = TARGET_WAITKIND_STOPPED; | |
1989 | status.value.sig = TARGET_SIGNAL_TRAP; | |
bd99dc85 | 1990 | |
8336d594 PA |
1991 | /* Pass the last stop reply back to GDB, but don't notify |
1992 | yet. */ | |
1993 | queue_stop_reply (entry->id, &thread->last_status); | |
1994 | } | |
1995 | else | |
1996 | { | |
1997 | if (thread_stopped (thread)) | |
1998 | { | |
1999 | if (debug_threads) | |
2000 | fprintf (stderr, "Reporting thread %s as already stopped with %s\n", | |
2001 | target_pid_to_str (entry->id), | |
2002 | target_waitstatus_to_string (&thread->last_status)); | |
2003 | ||
2004 | /* Pass the last stop reply back to GDB, but don't notify | |
2005 | yet. */ | |
2006 | queue_stop_reply (entry->id, &thread->last_status); | |
2007 | } | |
95954743 PA |
2008 | } |
2009 | ||
2010 | return 0; | |
64386c31 DJ |
2011 | } |
2012 | ||
8336d594 PA |
2013 | /* Set this inferior LWP's state as "want-stopped". We won't resume |
2014 | this LWP until the client gives us another action for it. */ | |
2015 | ||
2016 | static void | |
2017 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
2018 | { | |
2019 | struct thread_info *thread = (struct thread_info *) entry; | |
2020 | ||
2021 | thread->last_resume_kind = resume_stop; | |
2022 | ||
2023 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
2024 | { | |
2025 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; | |
2026 | thread->last_status.value.sig = TARGET_SIGNAL_0; | |
2027 | } | |
2028 | } | |
2029 | ||
2030 | /* Set all threads' states as "want-stopped". */ | |
2031 | ||
2032 | static void | |
2033 | gdb_wants_all_threads_stopped (void) | |
2034 | { | |
2035 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
2036 | } | |
2037 | ||
2038 | /* Clear the gdb_detached flag of every process. */ | |
2039 | ||
2040 | static void | |
2041 | gdb_reattached_process (struct inferior_list_entry *entry) | |
2042 | { | |
2043 | struct process_info *process = (struct process_info *) entry; | |
2044 | ||
2045 | process->gdb_detached = 0; | |
2046 | } | |
2047 | ||
5b1c542e PA |
2048 | /* Status handler for the '?' packet. */ |
2049 | ||
2050 | static void | |
2051 | handle_status (char *own_buf) | |
2052 | { | |
8336d594 PA |
2053 | /* GDB is connected, don't forward events to the target anymore. */ |
2054 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
2055 | |
2056 | /* In non-stop mode, we must send a stop reply for each stopped | |
2057 | thread. In all-stop mode, just send one for the first stopped | |
2058 | thread we find. */ | |
2059 | ||
2060 | if (non_stop) | |
2061 | { | |
8336d594 PA |
2062 | discard_queued_stop_replies (-1); |
2063 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); | |
bd99dc85 PA |
2064 | |
2065 | /* The first is sent immediatly. OK is sent if there is no | |
2066 | stopped thread, which is the same handling of the vStopped | |
2067 | packet (by design). */ | |
2068 | send_next_stop_reply (own_buf); | |
2069 | } | |
5b1c542e | 2070 | else |
bd99dc85 | 2071 | { |
8336d594 PA |
2072 | pause_all (); |
2073 | gdb_wants_all_threads_stopped (); | |
2074 | ||
bd99dc85 | 2075 | if (all_threads.head) |
8336d594 PA |
2076 | { |
2077 | struct target_waitstatus status; | |
2078 | ||
2079 | status.kind = TARGET_WAITKIND_STOPPED; | |
2080 | status.value.sig = TARGET_SIGNAL_TRAP; | |
2081 | prepare_resume_reply (own_buf, | |
2082 | all_threads.head->id, &status); | |
2083 | } | |
bd99dc85 PA |
2084 | else |
2085 | strcpy (own_buf, "W00"); | |
2086 | } | |
5b1c542e PA |
2087 | } |
2088 | ||
dd24457d DJ |
2089 | static void |
2090 | gdbserver_version (void) | |
2091 | { | |
c16158bc | 2092 | printf ("GNU gdbserver %s%s\n" |
6e7ffa39 | 2093 | "Copyright (C) 2010 Free Software Foundation, Inc.\n" |
dd24457d DJ |
2094 | "gdbserver is free software, covered by the GNU General Public License.\n" |
2095 | "This gdbserver was configured as \"%s\"\n", | |
c16158bc | 2096 | PKGVERSION, version, host_name); |
dd24457d DJ |
2097 | } |
2098 | ||
0bc68c49 | 2099 | static void |
c16158bc | 2100 | gdbserver_usage (FILE *stream) |
0bc68c49 | 2101 | { |
c16158bc JM |
2102 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
2103 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
2104 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
2105 | "\n" | |
2106 | "COMM may either be a tty device (for serial debugging), or \n" | |
2107 | "HOST:PORT to listen for a TCP connection.\n" | |
2108 | "\n" | |
2109 | "Options:\n" | |
62709adf PA |
2110 | " --debug Enable general debugging output.\n" |
2111 | " --remote-debug Enable remote protocol debugging output.\n" | |
2112 | " --version Display version information and exit.\n" | |
2113 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n"); | |
c16158bc JM |
2114 | if (REPORT_BUGS_TO[0] && stream == stdout) |
2115 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
2116 | } |
2117 | ||
db42f210 PA |
2118 | static void |
2119 | gdbserver_show_disableable (FILE *stream) | |
2120 | { | |
2121 | fprintf (stream, "Disableable packets:\n" | |
2122 | " vCont \tAll vCont packets\n" | |
2123 | " qC \tQuerying the current thread\n" | |
2124 | " qfThreadInfo\tThread listing\n" | |
2125 | " Tthread \tPassing the thread specifier in the T stop reply packet\n" | |
2126 | " threads \tAll of the above\n"); | |
2127 | } | |
2128 | ||
2129 | ||
2d717e4f DJ |
2130 | #undef require_running |
2131 | #define require_running(BUF) \ | |
2132 | if (!target_running ()) \ | |
2133 | { \ | |
2134 | write_enn (BUF); \ | |
2135 | break; \ | |
2136 | } | |
2137 | ||
95954743 PA |
2138 | static int |
2139 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
2140 | { | |
2141 | int pid = * (int *) args; | |
2142 | ||
2143 | if (ptid_get_pid (entry->id) == pid) | |
2144 | return 1; | |
2145 | ||
2146 | return 0; | |
2147 | } | |
2148 | ||
2149 | static void | |
2150 | kill_inferior_callback (struct inferior_list_entry *entry) | |
2151 | { | |
2152 | struct process_info *process = (struct process_info *) entry; | |
2153 | int pid = ptid_get_pid (process->head.id); | |
2154 | ||
2155 | kill_inferior (pid); | |
2156 | discard_queued_stop_replies (pid); | |
2157 | } | |
2158 | ||
9f767825 DE |
2159 | /* Callback for for_each_inferior to detach or kill the inferior, |
2160 | depending on whether we attached to it or not. | |
2161 | We inform the user whether we're detaching or killing the process | |
2162 | as this is only called when gdbserver is about to exit. */ | |
2163 | ||
95954743 PA |
2164 | static void |
2165 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
2166 | { | |
2167 | struct process_info *process = (struct process_info *) entry; | |
2168 | int pid = ptid_get_pid (process->head.id); | |
2169 | ||
2170 | if (process->attached) | |
2171 | detach_inferior (pid); | |
2172 | else | |
2173 | kill_inferior (pid); | |
2174 | ||
2175 | discard_queued_stop_replies (pid); | |
2176 | } | |
2177 | ||
9f767825 DE |
2178 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
2179 | the pids of started inferiors. */ | |
2180 | ||
2181 | static void | |
2182 | print_started_pid (struct inferior_list_entry *entry) | |
2183 | { | |
2184 | struct process_info *process = (struct process_info *) entry; | |
2185 | ||
2186 | if (! process->attached) | |
2187 | { | |
2188 | int pid = ptid_get_pid (process->head.id); | |
2189 | fprintf (stderr, " %d", pid); | |
2190 | } | |
2191 | } | |
2192 | ||
2193 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
2194 | the pids of attached inferiors. */ | |
2195 | ||
2196 | static void | |
2197 | print_attached_pid (struct inferior_list_entry *entry) | |
2198 | { | |
2199 | struct process_info *process = (struct process_info *) entry; | |
2200 | ||
2201 | if (process->attached) | |
2202 | { | |
2203 | int pid = ptid_get_pid (process->head.id); | |
2204 | fprintf (stderr, " %d", pid); | |
2205 | } | |
2206 | } | |
2207 | ||
2208 | /* Call this when exiting gdbserver with possible inferiors that need | |
2209 | to be killed or detached from. */ | |
2210 | ||
2211 | static void | |
2212 | detach_or_kill_for_exit (void) | |
2213 | { | |
2214 | /* First print a list of the inferiors we will be killing/detaching. | |
2215 | This is to assist the user, for example, in case the inferior unexpectedly | |
2216 | dies after we exit: did we screw up or did the inferior exit on its own? | |
2217 | Having this info will save some head-scratching. */ | |
2218 | ||
2219 | if (have_started_inferiors_p ()) | |
2220 | { | |
2221 | fprintf (stderr, "Killing process(es):"); | |
2222 | for_each_inferior (&all_processes, print_started_pid); | |
2223 | fprintf (stderr, "\n"); | |
2224 | } | |
2225 | if (have_attached_inferiors_p ()) | |
2226 | { | |
2227 | fprintf (stderr, "Detaching process(es):"); | |
2228 | for_each_inferior (&all_processes, print_attached_pid); | |
2229 | fprintf (stderr, "\n"); | |
2230 | } | |
2231 | ||
2232 | /* Now we can kill or detach the inferiors. */ | |
2233 | ||
2234 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
2235 | } | |
2236 | ||
95954743 PA |
2237 | static void |
2238 | join_inferiors_callback (struct inferior_list_entry *entry) | |
2239 | { | |
2240 | struct process_info *process = (struct process_info *) entry; | |
2241 | ||
2242 | /* If we are attached, then we can exit. Otherwise, we need to hang | |
2243 | around doing nothing, until the child is gone. */ | |
2244 | if (!process->attached) | |
2245 | join_inferior (ptid_get_pid (process->head.id)); | |
2246 | } | |
2247 | ||
c906108c | 2248 | int |
da85418c | 2249 | main (int argc, char *argv[]) |
c906108c | 2250 | { |
0729219d DJ |
2251 | int bad_attach; |
2252 | int pid; | |
2d717e4f DJ |
2253 | char *arg_end, *port; |
2254 | char **next_arg = &argv[1]; | |
2255 | int multi_mode = 0; | |
2256 | int attach = 0; | |
2257 | int was_running; | |
c906108c | 2258 | |
2d717e4f | 2259 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 2260 | { |
2d717e4f DJ |
2261 | if (strcmp (*next_arg, "--version") == 0) |
2262 | { | |
2263 | gdbserver_version (); | |
2264 | exit (0); | |
2265 | } | |
2266 | else if (strcmp (*next_arg, "--help") == 0) | |
2267 | { | |
c16158bc | 2268 | gdbserver_usage (stdout); |
2d717e4f DJ |
2269 | exit (0); |
2270 | } | |
2271 | else if (strcmp (*next_arg, "--attach") == 0) | |
2272 | attach = 1; | |
2273 | else if (strcmp (*next_arg, "--multi") == 0) | |
2274 | multi_mode = 1; | |
ccd213ac DJ |
2275 | else if (strcmp (*next_arg, "--wrapper") == 0) |
2276 | { | |
2277 | next_arg++; | |
2278 | ||
2279 | wrapper_argv = next_arg; | |
2280 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
2281 | next_arg++; | |
2282 | ||
2283 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
2284 | { | |
c16158bc | 2285 | gdbserver_usage (stderr); |
ccd213ac DJ |
2286 | exit (1); |
2287 | } | |
2288 | ||
2289 | /* Consume the "--". */ | |
2290 | *next_arg = NULL; | |
2291 | } | |
2d717e4f DJ |
2292 | else if (strcmp (*next_arg, "--debug") == 0) |
2293 | debug_threads = 1; | |
62709adf PA |
2294 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
2295 | remote_debug = 1; | |
db42f210 PA |
2296 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
2297 | { | |
2298 | gdbserver_show_disableable (stdout); | |
2299 | exit (0); | |
2300 | } | |
2301 | else if (strncmp (*next_arg, | |
2302 | "--disable-packet=", | |
2303 | sizeof ("--disable-packet=") - 1) == 0) | |
2304 | { | |
2305 | char *packets, *tok; | |
2306 | ||
2307 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
2308 | for (tok = strtok (packets, ","); | |
2309 | tok != NULL; | |
2310 | tok = strtok (NULL, ",")) | |
2311 | { | |
2312 | if (strcmp ("vCont", tok) == 0) | |
2313 | disable_packet_vCont = 1; | |
2314 | else if (strcmp ("Tthread", tok) == 0) | |
2315 | disable_packet_Tthread = 1; | |
2316 | else if (strcmp ("qC", tok) == 0) | |
2317 | disable_packet_qC = 1; | |
2318 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
2319 | disable_packet_qfThreadInfo = 1; | |
2320 | else if (strcmp ("threads", tok) == 0) | |
2321 | { | |
2322 | disable_packet_vCont = 1; | |
2323 | disable_packet_Tthread = 1; | |
2324 | disable_packet_qC = 1; | |
2325 | disable_packet_qfThreadInfo = 1; | |
2326 | } | |
2327 | else | |
2328 | { | |
2329 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
2330 | tok); | |
2331 | gdbserver_show_disableable (stderr); | |
2332 | exit (1); | |
2333 | } | |
2334 | } | |
2335 | } | |
2d717e4f DJ |
2336 | else |
2337 | { | |
2338 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
2339 | exit (1); | |
2340 | } | |
dd24457d | 2341 | |
2d717e4f DJ |
2342 | next_arg++; |
2343 | continue; | |
dd24457d DJ |
2344 | } |
2345 | ||
c5aa993b | 2346 | if (setjmp (toplevel)) |
c906108c | 2347 | { |
c5aa993b JM |
2348 | fprintf (stderr, "Exiting\n"); |
2349 | exit (1); | |
c906108c SS |
2350 | } |
2351 | ||
2d717e4f DJ |
2352 | port = *next_arg; |
2353 | next_arg++; | |
2354 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
2355 | { | |
c16158bc | 2356 | gdbserver_usage (stderr); |
2d717e4f DJ |
2357 | exit (1); |
2358 | } | |
2359 | ||
0729219d DJ |
2360 | bad_attach = 0; |
2361 | pid = 0; | |
2d717e4f DJ |
2362 | |
2363 | /* --attach used to come after PORT, so allow it there for | |
2364 | compatibility. */ | |
2365 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 2366 | { |
2d717e4f DJ |
2367 | attach = 1; |
2368 | next_arg++; | |
45b7b345 DJ |
2369 | } |
2370 | ||
2d717e4f DJ |
2371 | if (attach |
2372 | && (*next_arg == NULL | |
2373 | || (*next_arg)[0] == '\0' | |
2374 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
2375 | || *arg_end != '\0' | |
2376 | || next_arg[1] != NULL)) | |
2377 | bad_attach = 1; | |
2378 | ||
2379 | if (bad_attach) | |
dd24457d | 2380 | { |
c16158bc | 2381 | gdbserver_usage (stderr); |
dd24457d DJ |
2382 | exit (1); |
2383 | } | |
c906108c | 2384 | |
95954743 | 2385 | initialize_inferiors (); |
a20d5e98 | 2386 | initialize_async_io (); |
4ce44c66 | 2387 | initialize_low (); |
219f2f23 PA |
2388 | if (target_supports_tracepoints ()) |
2389 | initialize_tracepoint (); | |
4ce44c66 | 2390 | |
bca929d3 DE |
2391 | own_buf = xmalloc (PBUFSIZ + 1); |
2392 | mem_buf = xmalloc (PBUFSIZ); | |
0a30fbc4 | 2393 | |
2d717e4f | 2394 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 2395 | { |
2d717e4f DJ |
2396 | int i, n; |
2397 | ||
2398 | n = argc - (next_arg - argv); | |
bca929d3 | 2399 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
2d717e4f | 2400 | for (i = 0; i < n; i++) |
bca929d3 | 2401 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
2402 | program_argv[i] = NULL; |
2403 | ||
45b7b345 | 2404 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 2405 | start_inferior (program_argv); |
c906108c | 2406 | |
c588c53c MS |
2407 | /* We are now (hopefully) stopped at the first instruction of |
2408 | the target process. This assumes that the target process was | |
2409 | successfully created. */ | |
45b7b345 | 2410 | } |
2d717e4f DJ |
2411 | else if (pid != 0) |
2412 | { | |
5b1c542e | 2413 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
2414 | error ("Attaching not supported on this target"); |
2415 | ||
2416 | /* Otherwise succeeded. */ | |
2417 | } | |
45b7b345 DJ |
2418 | else |
2419 | { | |
5b1c542e PA |
2420 | last_status.kind = TARGET_WAITKIND_EXITED; |
2421 | last_status.value.integer = 0; | |
95954743 | 2422 | last_ptid = minus_one_ptid; |
45b7b345 | 2423 | } |
c906108c | 2424 | |
311de423 PA |
2425 | /* Don't report shared library events on the initial connection, |
2426 | even if some libraries are preloaded. Avoids the "stopped by | |
2427 | shared library event" notice on gdb side. */ | |
2428 | dlls_changed = 0; | |
2429 | ||
8264bb58 DJ |
2430 | if (setjmp (toplevel)) |
2431 | { | |
9f767825 | 2432 | detach_or_kill_for_exit (); |
8264bb58 DJ |
2433 | exit (1); |
2434 | } | |
2435 | ||
5b1c542e PA |
2436 | if (last_status.kind == TARGET_WAITKIND_EXITED |
2437 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
2438 | was_running = 0; |
2439 | else | |
2440 | was_running = 1; | |
2441 | ||
2442 | if (!was_running && !multi_mode) | |
c588c53c | 2443 | { |
2d717e4f | 2444 | fprintf (stderr, "No program to debug. GDBserver exiting.\n"); |
c588c53c MS |
2445 | exit (1); |
2446 | } | |
2447 | ||
c906108c SS |
2448 | while (1) |
2449 | { | |
a6f3e723 | 2450 | noack_mode = 0; |
95954743 | 2451 | multi_process = 0; |
8336d594 PA |
2452 | /* Be sure we're out of tfind mode. */ |
2453 | current_traceframe = -1; | |
bd99dc85 | 2454 | |
2d717e4f | 2455 | remote_open (port); |
c906108c | 2456 | |
2d717e4f DJ |
2457 | if (setjmp (toplevel) != 0) |
2458 | { | |
2459 | /* An error occurred. */ | |
2460 | if (response_needed) | |
2461 | { | |
2462 | write_enn (own_buf); | |
2463 | putpkt (own_buf); | |
2464 | } | |
2465 | } | |
2466 | ||
bd99dc85 | 2467 | /* Wait for events. This will return when all event sources are |
8336d594 | 2468 | removed from the event loop. */ |
bd99dc85 PA |
2469 | start_event_loop (); |
2470 | ||
2471 | /* If an exit was requested (using the "monitor exit" command), | |
2472 | terminate now. The only other way to get here is for | |
2473 | getpkt to fail; close the connection and reopen it at the | |
2474 | top of the loop. */ | |
2475 | ||
2476 | if (exit_requested) | |
c906108c | 2477 | { |
9f767825 | 2478 | detach_or_kill_for_exit (); |
bd99dc85 PA |
2479 | exit (0); |
2480 | } | |
8336d594 PA |
2481 | |
2482 | fprintf (stderr, | |
2483 | "Remote side has terminated connection. " | |
2484 | "GDBserver will reopen the connection.\n"); | |
2485 | ||
2486 | if (tracing) | |
2487 | { | |
2488 | if (disconnected_tracing) | |
2489 | { | |
2490 | /* Try to enable non-stop/async mode, so we we can both | |
2491 | wait for an async socket accept, and handle async | |
2492 | target events simultaneously. There's also no point | |
2493 | either in having the target always stop all threads, | |
2494 | when we're going to pass signals down without | |
2495 | informing GDB. */ | |
2496 | if (!non_stop) | |
2497 | { | |
2498 | if (start_non_stop (1)) | |
2499 | non_stop = 1; | |
2500 | ||
2501 | /* Detaching implicitly resumes all threads; simply | |
2502 | disconnecting does not. */ | |
2503 | } | |
2504 | } | |
2505 | else | |
2506 | { | |
2507 | fprintf (stderr, | |
2508 | "Disconnected tracing disabled; stopping trace run.\n"); | |
2509 | stop_tracing (); | |
2510 | } | |
2511 | } | |
bd99dc85 PA |
2512 | } |
2513 | } | |
01f9e8fa | 2514 | |
bd99dc85 PA |
2515 | /* Event loop callback that handles a serial event. The first byte in |
2516 | the serial buffer gets us here. We expect characters to arrive at | |
2517 | a brisk pace, so we read the rest of the packet with a blocking | |
2518 | getpkt call. */ | |
01f9e8fa | 2519 | |
8336d594 | 2520 | static int |
bd99dc85 PA |
2521 | process_serial_event (void) |
2522 | { | |
2523 | char ch; | |
2524 | int i = 0; | |
2525 | int signal; | |
2526 | unsigned int len; | |
2527 | CORE_ADDR mem_addr; | |
95954743 | 2528 | int pid; |
bd99dc85 PA |
2529 | unsigned char sig; |
2530 | int packet_len; | |
2531 | int new_packet_len = -1; | |
2532 | ||
2533 | /* Used to decide when gdbserver should exit in | |
2534 | multi-mode/remote. */ | |
2535 | static int have_ran = 0; | |
2536 | ||
2537 | if (!have_ran) | |
2538 | have_ran = target_running (); | |
2539 | ||
2540 | disable_async_io (); | |
2541 | ||
2542 | response_needed = 0; | |
2543 | packet_len = getpkt (own_buf); | |
2544 | if (packet_len <= 0) | |
2545 | { | |
bd99dc85 | 2546 | remote_close (); |
8336d594 PA |
2547 | /* Force an event loop break. */ |
2548 | return -1; | |
bd99dc85 PA |
2549 | } |
2550 | response_needed = 1; | |
2551 | ||
2552 | i = 0; | |
2553 | ch = own_buf[i++]; | |
2554 | switch (ch) | |
2555 | { | |
2556 | case 'q': | |
2557 | handle_query (own_buf, packet_len, &new_packet_len); | |
2558 | break; | |
2559 | case 'Q': | |
2560 | handle_general_set (own_buf); | |
2561 | break; | |
2562 | case 'D': | |
2563 | require_running (own_buf); | |
95954743 PA |
2564 | |
2565 | if (multi_process) | |
2566 | { | |
2567 | i++; /* skip ';' */ | |
2568 | pid = strtol (&own_buf[i], NULL, 16); | |
2569 | } | |
2570 | else | |
2571 | pid = | |
2572 | ptid_get_pid (((struct inferior_list_entry *) current_inferior)->id); | |
2573 | ||
8336d594 PA |
2574 | if (tracing && disconnected_tracing) |
2575 | { | |
2576 | struct thread_resume resume_info; | |
2577 | struct process_info *process = find_process_pid (pid); | |
2578 | ||
2579 | if (process == NULL) | |
2580 | { | |
2581 | write_enn (own_buf); | |
2582 | break; | |
2583 | } | |
2584 | ||
2585 | fprintf (stderr, | |
2586 | "Disconnected tracing in effect, " | |
2587 | "leaving gdbserver attached to the process\n"); | |
2588 | ||
2589 | /* Make sure we're in non-stop/async mode, so we we can both | |
2590 | wait for an async socket accept, and handle async target | |
2591 | events simultaneously. There's also no point either in | |
2592 | having the target stop all threads, when we're going to | |
2593 | pass signals down without informing GDB. */ | |
2594 | if (!non_stop) | |
2595 | { | |
2596 | if (debug_threads) | |
2597 | fprintf (stderr, "Forcing non-stop mode\n"); | |
2598 | ||
2599 | non_stop = 1; | |
2600 | start_non_stop (1); | |
2601 | } | |
2602 | ||
2603 | process->gdb_detached = 1; | |
2604 | ||
2605 | /* Detaching implicitly resumes all threads. */ | |
2606 | resume_info.thread = minus_one_ptid; | |
2607 | resume_info.kind = resume_continue; | |
2608 | resume_info.sig = 0; | |
2609 | (*the_target->resume) (&resume_info, 1); | |
2610 | ||
2611 | write_ok (own_buf); | |
2612 | break; /* from switch/case */ | |
2613 | } | |
2614 | ||
95954743 | 2615 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 2616 | stop_tracing (); |
95954743 | 2617 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
2618 | write_enn (own_buf); |
2619 | else | |
2620 | { | |
95954743 | 2621 | discard_queued_stop_replies (pid); |
bd99dc85 PA |
2622 | write_ok (own_buf); |
2623 | ||
2624 | if (extended_protocol) | |
c906108c | 2625 | { |
bd99dc85 PA |
2626 | /* Treat this like a normal program exit. */ |
2627 | last_status.kind = TARGET_WAITKIND_EXITED; | |
2628 | last_status.value.integer = 0; | |
95954743 | 2629 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 2630 | |
bd99dc85 PA |
2631 | current_inferior = NULL; |
2632 | } | |
2633 | else | |
2634 | { | |
2635 | putpkt (own_buf); | |
2636 | remote_close (); | |
2637 | ||
2638 | /* If we are attached, then we can exit. Otherwise, we | |
2639 | need to hang around doing nothing, until the child is | |
2640 | gone. */ | |
95954743 PA |
2641 | for_each_inferior (&all_processes, |
2642 | join_inferiors_callback); | |
bd99dc85 PA |
2643 | exit (0); |
2644 | } | |
2645 | } | |
2646 | break; | |
2647 | case '!': | |
2648 | extended_protocol = 1; | |
2649 | write_ok (own_buf); | |
2650 | break; | |
2651 | case '?': | |
2652 | handle_status (own_buf); | |
2653 | break; | |
2654 | case 'H': | |
2655 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
2656 | { | |
95954743 PA |
2657 | ptid_t gdb_id, thread_id; |
2658 | int pid; | |
bd99dc85 PA |
2659 | |
2660 | require_running (own_buf); | |
95954743 PA |
2661 | |
2662 | gdb_id = read_ptid (&own_buf[2], NULL); | |
2663 | ||
2664 | pid = ptid_get_pid (gdb_id); | |
2665 | ||
2666 | if (ptid_equal (gdb_id, null_ptid) | |
2667 | || ptid_equal (gdb_id, minus_one_ptid)) | |
2668 | thread_id = null_ptid; | |
2669 | else if (pid != 0 | |
2670 | && ptid_equal (pid_to_ptid (pid), | |
2671 | gdb_id)) | |
2672 | { | |
2673 | struct thread_info *thread = | |
2674 | (struct thread_info *) find_inferior (&all_threads, | |
2675 | first_thread_of, | |
2676 | &pid); | |
2677 | if (!thread) | |
2678 | { | |
2679 | write_enn (own_buf); | |
2680 | break; | |
2681 | } | |
2682 | ||
2683 | thread_id = ((struct inferior_list_entry *)thread)->id; | |
2684 | } | |
bd99dc85 PA |
2685 | else |
2686 | { | |
2687 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 2688 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 2689 | { |
a06660f7 | 2690 | write_enn (own_buf); |
c906108c SS |
2691 | break; |
2692 | } | |
c906108c SS |
2693 | } |
2694 | ||
bd99dc85 | 2695 | if (own_buf[1] == 'g') |
c906108c | 2696 | { |
95954743 | 2697 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 2698 | { |
bd99dc85 PA |
2699 | /* GDB is telling us to choose any thread. Check if |
2700 | the currently selected thread is still valid. If | |
2701 | it is not, select the first available. */ | |
2702 | struct thread_info *thread = | |
2703 | (struct thread_info *) find_inferior_id (&all_threads, | |
2704 | general_thread); | |
2705 | if (thread == NULL) | |
2706 | thread_id = all_threads.head->id; | |
c906108c | 2707 | } |
bd99dc85 PA |
2708 | |
2709 | general_thread = thread_id; | |
2710 | set_desired_inferior (1); | |
c906108c | 2711 | } |
bd99dc85 PA |
2712 | else if (own_buf[1] == 'c') |
2713 | cont_thread = thread_id; | |
2714 | else if (own_buf[1] == 's') | |
2715 | step_thread = thread_id; | |
c906108c | 2716 | |
bd99dc85 PA |
2717 | write_ok (own_buf); |
2718 | } | |
2719 | else | |
2720 | { | |
2721 | /* Silently ignore it so that gdb can extend the protocol | |
2722 | without compatibility headaches. */ | |
2723 | own_buf[0] = '\0'; | |
2d717e4f | 2724 | } |
bd99dc85 PA |
2725 | break; |
2726 | case 'g': | |
219f2f23 PA |
2727 | require_running (own_buf); |
2728 | if (current_traceframe >= 0) | |
2729 | { | |
2730 | struct regcache *regcache = new_register_cache (); | |
2731 | ||
2732 | if (fetch_traceframe_registers (current_traceframe, | |
2733 | regcache, -1) == 0) | |
2734 | registers_to_string (regcache, own_buf); | |
2735 | else | |
2736 | write_enn (own_buf); | |
2737 | free_register_cache (regcache); | |
2738 | } | |
2739 | else | |
2740 | { | |
2741 | struct regcache *regcache; | |
2742 | ||
2743 | set_desired_inferior (1); | |
2744 | regcache = get_thread_regcache (current_inferior, 1); | |
2745 | registers_to_string (regcache, own_buf); | |
2746 | } | |
bd99dc85 PA |
2747 | break; |
2748 | case 'G': | |
219f2f23 PA |
2749 | require_running (own_buf); |
2750 | if (current_traceframe >= 0) | |
2751 | write_enn (own_buf); | |
2752 | else | |
2753 | { | |
442ea881 PA |
2754 | struct regcache *regcache; |
2755 | ||
442ea881 PA |
2756 | set_desired_inferior (1); |
2757 | regcache = get_thread_regcache (current_inferior, 1); | |
2758 | registers_from_string (regcache, &own_buf[1]); | |
2759 | write_ok (own_buf); | |
2760 | } | |
bd99dc85 PA |
2761 | break; |
2762 | case 'm': | |
2763 | require_running (own_buf); | |
2764 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
219f2f23 | 2765 | if (read_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
2766 | convert_int_to_ascii (mem_buf, own_buf, len); |
2767 | else | |
2768 | write_enn (own_buf); | |
2769 | break; | |
2770 | case 'M': | |
2771 | require_running (own_buf); | |
2772 | decode_M_packet (&own_buf[1], &mem_addr, &len, mem_buf); | |
219f2f23 | 2773 | if (write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
2774 | write_ok (own_buf); |
2775 | else | |
2776 | write_enn (own_buf); | |
2777 | break; | |
2778 | case 'X': | |
2779 | require_running (own_buf); | |
2780 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
2781 | &mem_addr, &len, mem_buf) < 0 | |
219f2f23 | 2782 | || write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
2783 | write_enn (own_buf); |
2784 | else | |
2785 | write_ok (own_buf); | |
2786 | break; | |
2787 | case 'C': | |
2788 | require_running (own_buf); | |
2789 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
2790 | if (target_signal_to_host_p (sig)) | |
2791 | signal = target_signal_to_host (sig); | |
2792 | else | |
2793 | signal = 0; | |
2794 | myresume (own_buf, 0, signal); | |
2795 | break; | |
2796 | case 'S': | |
2797 | require_running (own_buf); | |
2798 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
2799 | if (target_signal_to_host_p (sig)) | |
2800 | signal = target_signal_to_host (sig); | |
2801 | else | |
2802 | signal = 0; | |
2803 | myresume (own_buf, 1, signal); | |
2804 | break; | |
2805 | case 'c': | |
2806 | require_running (own_buf); | |
2807 | signal = 0; | |
2808 | myresume (own_buf, 0, signal); | |
2809 | break; | |
2810 | case 's': | |
2811 | require_running (own_buf); | |
2812 | signal = 0; | |
2813 | myresume (own_buf, 1, signal); | |
2814 | break; | |
c6314022 AR |
2815 | case 'Z': /* insert_ ... */ |
2816 | /* Fallthrough. */ | |
2817 | case 'z': /* remove_ ... */ | |
bd99dc85 PA |
2818 | { |
2819 | char *lenptr; | |
2820 | char *dataptr; | |
2821 | CORE_ADDR addr = strtoul (&own_buf[3], &lenptr, 16); | |
2822 | int len = strtol (lenptr + 1, &dataptr, 16); | |
2823 | char type = own_buf[1]; | |
c6314022 | 2824 | int res; |
d993e290 | 2825 | const int insert = ch == 'Z'; |
c6314022 | 2826 | |
d993e290 PA |
2827 | /* Default to unrecognized/unsupported. */ |
2828 | res = 1; | |
2829 | switch (type) | |
2830 | { | |
2831 | case '0': /* software-breakpoint */ | |
2832 | case '1': /* hardware-breakpoint */ | |
2833 | case '2': /* write watchpoint */ | |
2834 | case '3': /* read watchpoint */ | |
2835 | case '4': /* access watchpoint */ | |
2836 | require_running (own_buf); | |
2837 | if (insert && the_target->insert_point != NULL) | |
2838 | res = (*the_target->insert_point) (type, addr, len); | |
2839 | else if (!insert && the_target->remove_point != NULL) | |
2840 | res = (*the_target->remove_point) (type, addr, len); | |
2841 | break; | |
2842 | default: | |
2843 | break; | |
2844 | } | |
bd99dc85 | 2845 | |
c6314022 AR |
2846 | if (res == 0) |
2847 | write_ok (own_buf); | |
2848 | else if (res == 1) | |
2849 | /* Unsupported. */ | |
2850 | own_buf[0] = '\0'; | |
bd99dc85 | 2851 | else |
c6314022 | 2852 | write_enn (own_buf); |
bd99dc85 PA |
2853 | break; |
2854 | } | |
2855 | case 'k': | |
2856 | response_needed = 0; | |
2857 | if (!target_running ()) | |
95954743 PA |
2858 | /* The packet we received doesn't make sense - but we can't |
2859 | reply to it, either. */ | |
8336d594 | 2860 | return 0; |
c906108c | 2861 | |
95954743 PA |
2862 | fprintf (stderr, "Killing all inferiors\n"); |
2863 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 2864 | |
bd99dc85 PA |
2865 | /* When using the extended protocol, we wait with no program |
2866 | running. The traditional protocol will exit instead. */ | |
2867 | if (extended_protocol) | |
2868 | { | |
2869 | last_status.kind = TARGET_WAITKIND_EXITED; | |
2870 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
8336d594 | 2871 | return 0; |
bd99dc85 PA |
2872 | } |
2873 | else | |
8336d594 PA |
2874 | exit (0); |
2875 | ||
bd99dc85 PA |
2876 | case 'T': |
2877 | { | |
95954743 | 2878 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
2879 | |
2880 | require_running (own_buf); | |
95954743 PA |
2881 | |
2882 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 2883 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 2884 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
2885 | { |
2886 | write_enn (own_buf); | |
2887 | break; | |
2888 | } | |
2889 | ||
2890 | if (mythread_alive (thread_id)) | |
2891 | write_ok (own_buf); | |
2892 | else | |
2893 | write_enn (own_buf); | |
2894 | } | |
2895 | break; | |
2896 | case 'R': | |
2897 | response_needed = 0; | |
2898 | ||
2899 | /* Restarting the inferior is only supported in the extended | |
2900 | protocol. */ | |
2901 | if (extended_protocol) | |
2902 | { | |
2903 | if (target_running ()) | |
95954743 PA |
2904 | for_each_inferior (&all_processes, |
2905 | kill_inferior_callback); | |
bd99dc85 PA |
2906 | fprintf (stderr, "GDBserver restarting\n"); |
2907 | ||
2908 | /* Wait till we are at 1st instruction in prog. */ | |
2909 | if (program_argv != NULL) | |
2910 | start_inferior (program_argv); | |
2911 | else | |
2912 | { | |
2913 | last_status.kind = TARGET_WAITKIND_EXITED; | |
2914 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
2915 | } | |
8336d594 | 2916 | return 0; |
c906108c SS |
2917 | } |
2918 | else | |
2919 | { | |
bd99dc85 PA |
2920 | /* It is a request we don't understand. Respond with an |
2921 | empty packet so that gdb knows that we don't support this | |
2922 | request. */ | |
2923 | own_buf[0] = '\0'; | |
2924 | break; | |
2925 | } | |
2926 | case 'v': | |
2927 | /* Extended (long) request. */ | |
2928 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
2929 | break; | |
2930 | ||
2931 | default: | |
2932 | /* It is a request we don't understand. Respond with an empty | |
2933 | packet so that gdb knows that we don't support this | |
2934 | request. */ | |
2935 | own_buf[0] = '\0'; | |
2936 | break; | |
2937 | } | |
2938 | ||
2939 | if (new_packet_len != -1) | |
2940 | putpkt_binary (own_buf, new_packet_len); | |
2941 | else | |
2942 | putpkt (own_buf); | |
2943 | ||
2944 | response_needed = 0; | |
2945 | ||
2946 | if (!extended_protocol && have_ran && !target_running ()) | |
2947 | { | |
2948 | /* In non-stop, defer exiting until GDB had a chance to query | |
2949 | the whole vStopped list (until it gets an OK). */ | |
2950 | if (!notif_queue) | |
2951 | { | |
2952 | fprintf (stderr, "GDBserver exiting\n"); | |
c906108c | 2953 | remote_close (); |
bd99dc85 | 2954 | exit (0); |
c906108c SS |
2955 | } |
2956 | } | |
8336d594 PA |
2957 | |
2958 | if (exit_requested) | |
2959 | return -1; | |
2960 | ||
2961 | return 0; | |
c906108c | 2962 | } |
bd99dc85 PA |
2963 | |
2964 | /* Event-loop callback for serial events. */ | |
2965 | ||
8336d594 | 2966 | int |
bd99dc85 PA |
2967 | handle_serial_event (int err, gdb_client_data client_data) |
2968 | { | |
2969 | if (debug_threads) | |
2970 | fprintf (stderr, "handling possible serial event\n"); | |
2971 | ||
2972 | /* Really handle it. */ | |
8336d594 PA |
2973 | if (process_serial_event () < 0) |
2974 | return -1; | |
bd99dc85 PA |
2975 | |
2976 | /* Be sure to not change the selected inferior behind GDB's back. | |
2977 | Important in the non-stop mode asynchronous protocol. */ | |
2978 | set_desired_inferior (1); | |
8336d594 PA |
2979 | |
2980 | return 0; | |
bd99dc85 PA |
2981 | } |
2982 | ||
2983 | /* Event-loop callback for target events. */ | |
2984 | ||
8336d594 | 2985 | int |
bd99dc85 PA |
2986 | handle_target_event (int err, gdb_client_data client_data) |
2987 | { | |
2988 | if (debug_threads) | |
2989 | fprintf (stderr, "handling possible target event\n"); | |
2990 | ||
95954743 PA |
2991 | last_ptid = mywait (minus_one_ptid, &last_status, |
2992 | TARGET_WNOHANG, 1); | |
bd99dc85 PA |
2993 | |
2994 | if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
2995 | { | |
8336d594 PA |
2996 | int pid = ptid_get_pid (last_ptid); |
2997 | struct process_info *process = find_process_pid (pid); | |
2998 | int forward_event = !gdb_connected () || process->gdb_detached; | |
2999 | ||
3000 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
3001 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
505106cd | 3002 | mourn_inferior (process); |
8336d594 PA |
3003 | |
3004 | if (forward_event) | |
3005 | { | |
3006 | if (!target_running ()) | |
3007 | { | |
3008 | /* The last process exited. We're done. */ | |
3009 | exit (0); | |
3010 | } | |
3011 | ||
3012 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
3013 | { | |
3014 | /* A thread stopped with a signal, but gdb isn't | |
3015 | connected to handle it. Pass it down to the | |
3016 | inferior, as if it wasn't being traced. */ | |
3017 | struct thread_resume resume_info; | |
3018 | ||
3019 | if (debug_threads) | |
3020 | fprintf (stderr, | |
3021 | "GDB not connected; forwarding event %d for [%s]\n", | |
3022 | (int) last_status.kind, | |
3023 | target_pid_to_str (last_ptid)); | |
3024 | ||
3025 | resume_info.thread = last_ptid; | |
3026 | resume_info.kind = resume_continue; | |
3027 | resume_info.sig = last_status.value.sig; | |
3028 | (*the_target->resume) (&resume_info, 1); | |
3029 | } | |
3030 | else if (debug_threads) | |
3031 | fprintf (stderr, "GDB not connected; ignoring event %d for [%s]\n", | |
3032 | (int) last_status.kind, | |
3033 | target_pid_to_str (last_ptid)); | |
3034 | } | |
3035 | else | |
3036 | { | |
3037 | /* Something interesting. Tell GDB about it. */ | |
3038 | push_event (last_ptid, &last_status); | |
3039 | } | |
bd99dc85 PA |
3040 | } |
3041 | ||
3042 | /* Be sure to not change the selected inferior behind GDB's back. | |
3043 | Important in the non-stop mode asynchronous protocol. */ | |
3044 | set_desired_inferior (1); | |
8336d594 PA |
3045 | |
3046 | return 0; | |
bd99dc85 | 3047 | } |