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c906108c | 1 | /* Remote utility routines for the remote server for GDB. |
ecd75fc8 | 2 | Copyright (C) 1986-2014 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "server.h" | |
20 | #include "terminal.h" | |
5b1c542e | 21 | #include "target.h" |
623b6bdf | 22 | #include "gdbthread.h" |
3aee8918 | 23 | #include "tdesc.h" |
799cdc37 PA |
24 | #include "dll.h" |
25 | ||
c906108c SS |
26 | #include <stdio.h> |
27 | #include <string.h> | |
b80864fb | 28 | #if HAVE_SYS_IOCTL_H |
c906108c | 29 | #include <sys/ioctl.h> |
b80864fb | 30 | #endif |
68070c10 | 31 | #if HAVE_SYS_FILE_H |
c906108c | 32 | #include <sys/file.h> |
68070c10 | 33 | #endif |
b80864fb | 34 | #if HAVE_NETINET_IN_H |
c906108c | 35 | #include <netinet/in.h> |
b80864fb DJ |
36 | #endif |
37 | #if HAVE_SYS_SOCKET_H | |
c906108c | 38 | #include <sys/socket.h> |
b80864fb DJ |
39 | #endif |
40 | #if HAVE_NETDB_H | |
c906108c | 41 | #include <netdb.h> |
b80864fb DJ |
42 | #endif |
43 | #if HAVE_NETINET_TCP_H | |
c906108c | 44 | #include <netinet/tcp.h> |
b80864fb DJ |
45 | #endif |
46 | #if HAVE_SYS_IOCTL_H | |
c906108c | 47 | #include <sys/ioctl.h> |
b80864fb | 48 | #endif |
68070c10 | 49 | #if HAVE_SIGNAL_H |
c906108c | 50 | #include <signal.h> |
68070c10 PA |
51 | #endif |
52 | #if HAVE_FCNTL_H | |
c906108c | 53 | #include <fcntl.h> |
68070c10 | 54 | #endif |
cf30a8e1 C |
55 | #include <sys/time.h> |
56 | #include <unistd.h> | |
b80864fb | 57 | #if HAVE_ARPA_INET_H |
0729219d | 58 | #include <arpa/inet.h> |
b80864fb | 59 | #endif |
53ce3c39 | 60 | #include <sys/stat.h> |
68070c10 | 61 | #if HAVE_ERRNO_H |
8264bb58 | 62 | #include <errno.h> |
68070c10 | 63 | #endif |
b80864fb DJ |
64 | |
65 | #if USE_WIN32API | |
12ea4b69 | 66 | #include <winsock2.h> |
b80864fb | 67 | #endif |
c906108c | 68 | |
ac8c974e AR |
69 | #if __QNX__ |
70 | #include <sys/iomgr.h> | |
71 | #endif /* __QNX__ */ | |
72 | ||
f450004a DJ |
73 | #ifndef HAVE_SOCKLEN_T |
74 | typedef int socklen_t; | |
75 | #endif | |
76 | ||
0fb4aa4b PA |
77 | #ifndef IN_PROCESS_AGENT |
78 | ||
7390519e PA |
79 | #if USE_WIN32API |
80 | # define INVALID_DESCRIPTOR INVALID_SOCKET | |
81 | #else | |
82 | # define INVALID_DESCRIPTOR -1 | |
83 | #endif | |
84 | ||
24b066ba DE |
85 | /* Extra value for readchar_callback. */ |
86 | enum { | |
87 | /* The callback is currently not scheduled. */ | |
88 | NOT_SCHEDULED = -1 | |
89 | }; | |
90 | ||
91 | /* Status of the readchar callback. | |
92 | Either NOT_SCHEDULED or the callback id. */ | |
93 | static int readchar_callback = NOT_SCHEDULED; | |
94 | ||
bc3b5632 | 95 | static int readchar (void); |
24b066ba DE |
96 | static void reset_readchar (void); |
97 | static void reschedule (void); | |
bc3b5632 | 98 | |
fd500816 DJ |
99 | /* A cache entry for a successfully looked-up symbol. */ |
100 | struct sym_cache | |
101 | { | |
95954743 | 102 | char *name; |
fd500816 DJ |
103 | CORE_ADDR addr; |
104 | struct sym_cache *next; | |
105 | }; | |
106 | ||
c906108c | 107 | int remote_debug = 0; |
03863182 | 108 | struct ui_file *gdb_stdlog; |
c906108c | 109 | |
e0f9f062 DE |
110 | static int remote_is_stdio = 0; |
111 | ||
ec48365d PA |
112 | static gdb_fildes_t remote_desc = INVALID_DESCRIPTOR; |
113 | static gdb_fildes_t listen_desc = INVALID_DESCRIPTOR; | |
c906108c | 114 | |
0d62e5e8 DJ |
115 | /* FIXME headerize? */ |
116 | extern int using_threads; | |
117 | extern int debug_threads; | |
118 | ||
a6f3e723 SL |
119 | /* If true, then GDB has requested noack mode. */ |
120 | int noack_mode = 0; | |
121 | /* If true, then we tell GDB to use noack mode by default. */ | |
122 | int transport_is_reliable = 0; | |
123 | ||
0f48aa01 | 124 | #ifdef USE_WIN32API |
68070c10 PA |
125 | # define read(fd, buf, len) recv (fd, (char *) buf, len, 0) |
126 | # define write(fd, buf, len) send (fd, (char *) buf, len, 0) | |
0f48aa01 DJ |
127 | #endif |
128 | ||
8336d594 PA |
129 | int |
130 | gdb_connected (void) | |
131 | { | |
132 | return remote_desc != INVALID_DESCRIPTOR; | |
133 | } | |
134 | ||
e0f9f062 DE |
135 | /* Return true if the remote connection is over stdio. */ |
136 | ||
137 | int | |
138 | remote_connection_is_stdio (void) | |
139 | { | |
140 | return remote_is_stdio; | |
141 | } | |
142 | ||
8336d594 PA |
143 | static void |
144 | enable_async_notification (int fd) | |
145 | { | |
146 | #if defined(F_SETFL) && defined (FASYNC) | |
147 | int save_fcntl_flags; | |
148 | ||
149 | save_fcntl_flags = fcntl (fd, F_GETFL, 0); | |
150 | fcntl (fd, F_SETFL, save_fcntl_flags | FASYNC); | |
151 | #if defined (F_SETOWN) | |
152 | fcntl (fd, F_SETOWN, getpid ()); | |
153 | #endif | |
154 | #endif | |
155 | } | |
156 | ||
157 | static int | |
158 | handle_accept_event (int err, gdb_client_data client_data) | |
159 | { | |
160 | struct sockaddr_in sockaddr; | |
161 | socklen_t tmp; | |
162 | ||
163 | if (debug_threads) | |
164 | fprintf (stderr, "handling possible accept event\n"); | |
165 | ||
166 | tmp = sizeof (sockaddr); | |
167 | remote_desc = accept (listen_desc, (struct sockaddr *) &sockaddr, &tmp); | |
168 | if (remote_desc == -1) | |
169 | perror_with_name ("Accept failed"); | |
170 | ||
171 | /* Enable TCP keep alive process. */ | |
172 | tmp = 1; | |
173 | setsockopt (remote_desc, SOL_SOCKET, SO_KEEPALIVE, | |
174 | (char *) &tmp, sizeof (tmp)); | |
175 | ||
176 | /* Tell TCP not to delay small packets. This greatly speeds up | |
177 | interactive response. */ | |
178 | tmp = 1; | |
179 | setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY, | |
180 | (char *) &tmp, sizeof (tmp)); | |
181 | ||
182 | #ifndef USE_WIN32API | |
8336d594 PA |
183 | signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply |
184 | exits when the remote side dies. */ | |
03f2bd59 JK |
185 | #endif |
186 | ||
187 | if (run_once) | |
188 | { | |
189 | #ifndef USE_WIN32API | |
190 | close (listen_desc); /* No longer need this */ | |
8336d594 | 191 | #else |
03f2bd59 | 192 | closesocket (listen_desc); /* No longer need this */ |
8336d594 | 193 | #endif |
03f2bd59 | 194 | } |
8336d594 | 195 | |
03f2bd59 JK |
196 | /* Even if !RUN_ONCE no longer notice new connections. Still keep the |
197 | descriptor open for add_file_handler to wait for a new connection. */ | |
8336d594 PA |
198 | delete_file_handler (listen_desc); |
199 | ||
200 | /* Convert IP address to string. */ | |
201 | fprintf (stderr, "Remote debugging from host %s\n", | |
202 | inet_ntoa (sockaddr.sin_addr)); | |
203 | ||
204 | enable_async_notification (remote_desc); | |
205 | ||
206 | /* Register the event loop handler. */ | |
207 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
208 | ||
209 | /* We have a new GDB connection now. If we were disconnected | |
210 | tracing, there's a window where the target could report a stop | |
211 | event to the event loop, and since we have a connection now, we'd | |
212 | try to send vStopped notifications to GDB. But, don't do that | |
213 | until GDB as selected all-stop/non-stop, and has queried the | |
214 | threads' status ('?'). */ | |
215 | target_async (0); | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
03f2bd59 JK |
220 | /* Prepare for a later connection to a remote debugger. |
221 | NAME is the filename used for communication. */ | |
222 | ||
223 | void | |
224 | remote_prepare (char *name) | |
225 | { | |
226 | char *port_str; | |
227 | #ifdef USE_WIN32API | |
228 | static int winsock_initialized; | |
229 | #endif | |
230 | int port; | |
231 | struct sockaddr_in sockaddr; | |
232 | socklen_t tmp; | |
233 | char *port_end; | |
234 | ||
e0f9f062 DE |
235 | remote_is_stdio = 0; |
236 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
237 | { | |
238 | /* We need to record fact that we're using stdio sooner than the | |
239 | call to remote_open so start_inferior knows the connection is | |
240 | via stdio. */ | |
241 | remote_is_stdio = 1; | |
242 | transport_is_reliable = 1; | |
243 | return; | |
244 | } | |
245 | ||
03f2bd59 JK |
246 | port_str = strchr (name, ':'); |
247 | if (port_str == NULL) | |
248 | { | |
249 | transport_is_reliable = 0; | |
250 | return; | |
251 | } | |
252 | ||
253 | port = strtoul (port_str + 1, &port_end, 10); | |
254 | if (port_str[1] == '\0' || *port_end != '\0') | |
255 | fatal ("Bad port argument: %s", name); | |
256 | ||
257 | #ifdef USE_WIN32API | |
258 | if (!winsock_initialized) | |
259 | { | |
260 | WSADATA wsad; | |
261 | ||
262 | WSAStartup (MAKEWORD (1, 0), &wsad); | |
263 | winsock_initialized = 1; | |
264 | } | |
265 | #endif | |
266 | ||
267 | listen_desc = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP); | |
268 | if (listen_desc == -1) | |
269 | perror_with_name ("Can't open socket"); | |
270 | ||
271 | /* Allow rapid reuse of this port. */ | |
272 | tmp = 1; | |
273 | setsockopt (listen_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, | |
274 | sizeof (tmp)); | |
275 | ||
276 | sockaddr.sin_family = PF_INET; | |
277 | sockaddr.sin_port = htons (port); | |
278 | sockaddr.sin_addr.s_addr = INADDR_ANY; | |
279 | ||
280 | if (bind (listen_desc, (struct sockaddr *) &sockaddr, sizeof (sockaddr)) | |
281 | || listen (listen_desc, 1)) | |
282 | perror_with_name ("Can't bind address"); | |
283 | ||
284 | transport_is_reliable = 1; | |
285 | } | |
286 | ||
c906108c SS |
287 | /* Open a connection to a remote debugger. |
288 | NAME is the filename used for communication. */ | |
289 | ||
290 | void | |
fba45db2 | 291 | remote_open (char *name) |
c906108c | 292 | { |
8264bb58 DJ |
293 | char *port_str; |
294 | ||
295 | port_str = strchr (name, ':'); | |
e0f9f062 | 296 | #ifdef USE_WIN32API |
8264bb58 | 297 | if (port_str == NULL) |
e0f9f062 DE |
298 | error ("Only <host>:<port> is supported on this platform."); |
299 | #endif | |
300 | ||
301 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
302 | { | |
303 | fprintf (stderr, "Remote debugging using stdio\n"); | |
304 | ||
305 | /* Use stdin as the handle of the connection. | |
306 | We only select on reads, for example. */ | |
307 | remote_desc = fileno (stdin); | |
308 | ||
309 | enable_async_notification (remote_desc); | |
310 | ||
311 | /* Register the event loop handler. */ | |
312 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
313 | } | |
314 | #ifndef USE_WIN32API | |
315 | else if (port_str == NULL) | |
c906108c | 316 | { |
8264bb58 DJ |
317 | struct stat statbuf; |
318 | ||
319 | if (stat (name, &statbuf) == 0 | |
320 | && (S_ISCHR (statbuf.st_mode) || S_ISFIFO (statbuf.st_mode))) | |
321 | remote_desc = open (name, O_RDWR); | |
322 | else | |
323 | { | |
324 | errno = EINVAL; | |
325 | remote_desc = -1; | |
326 | } | |
327 | ||
c906108c SS |
328 | if (remote_desc < 0) |
329 | perror_with_name ("Could not open remote device"); | |
330 | ||
331 | #ifdef HAVE_TERMIOS | |
332 | { | |
333 | struct termios termios; | |
c5aa993b | 334 | tcgetattr (remote_desc, &termios); |
c906108c SS |
335 | |
336 | termios.c_iflag = 0; | |
337 | termios.c_oflag = 0; | |
338 | termios.c_lflag = 0; | |
c5aa993b | 339 | termios.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 340 | termios.c_cflag |= CLOCAL | CS8; |
d0608e50 | 341 | termios.c_cc[VMIN] = 1; |
c906108c SS |
342 | termios.c_cc[VTIME] = 0; |
343 | ||
c5aa993b | 344 | tcsetattr (remote_desc, TCSANOW, &termios); |
c906108c SS |
345 | } |
346 | #endif | |
347 | ||
348 | #ifdef HAVE_TERMIO | |
349 | { | |
350 | struct termio termio; | |
351 | ioctl (remote_desc, TCGETA, &termio); | |
352 | ||
353 | termio.c_iflag = 0; | |
354 | termio.c_oflag = 0; | |
355 | termio.c_lflag = 0; | |
c5aa993b | 356 | termio.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 357 | termio.c_cflag |= CLOCAL | CS8; |
d0608e50 | 358 | termio.c_cc[VMIN] = 1; |
c906108c SS |
359 | termio.c_cc[VTIME] = 0; |
360 | ||
361 | ioctl (remote_desc, TCSETA, &termio); | |
362 | } | |
363 | #endif | |
364 | ||
365 | #ifdef HAVE_SGTTY | |
366 | { | |
367 | struct sgttyb sg; | |
368 | ||
369 | ioctl (remote_desc, TIOCGETP, &sg); | |
370 | sg.sg_flags = RAW; | |
371 | ioctl (remote_desc, TIOCSETP, &sg); | |
372 | } | |
373 | #endif | |
374 | ||
e641a1ca | 375 | fprintf (stderr, "Remote debugging using %s\n", name); |
a6f3e723 | 376 | |
8336d594 PA |
377 | enable_async_notification (remote_desc); |
378 | ||
379 | /* Register the event loop handler. */ | |
380 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
c906108c | 381 | } |
e0f9f062 | 382 | #endif /* USE_WIN32API */ |
c906108c SS |
383 | else |
384 | { | |
c906108c | 385 | int port; |
03f2bd59 | 386 | socklen_t len; |
c906108c | 387 | struct sockaddr_in sockaddr; |
c906108c | 388 | |
03f2bd59 JK |
389 | len = sizeof (sockaddr); |
390 | if (getsockname (listen_desc, | |
391 | (struct sockaddr *) &sockaddr, &len) < 0 | |
392 | || len < sizeof (sockaddr)) | |
393 | perror_with_name ("Can't determine port"); | |
394 | port = ntohs (sockaddr.sin_port); | |
6f8486da | 395 | |
6910d122 | 396 | fprintf (stderr, "Listening on port %d\n", port); |
b80864fb | 397 | fflush (stderr); |
6910d122 | 398 | |
8336d594 PA |
399 | /* Register the event loop handler. */ |
400 | add_file_handler (listen_desc, handle_accept_event, NULL); | |
c906108c | 401 | } |
c906108c SS |
402 | } |
403 | ||
404 | void | |
fba45db2 | 405 | remote_close (void) |
c906108c | 406 | { |
bd99dc85 PA |
407 | delete_file_handler (remote_desc); |
408 | ||
b80864fb DJ |
409 | #ifdef USE_WIN32API |
410 | closesocket (remote_desc); | |
411 | #else | |
e0f9f062 DE |
412 | if (! remote_connection_is_stdio ()) |
413 | close (remote_desc); | |
b80864fb | 414 | #endif |
8336d594 | 415 | remote_desc = INVALID_DESCRIPTOR; |
24b066ba DE |
416 | |
417 | reset_readchar (); | |
c906108c SS |
418 | } |
419 | ||
420 | /* Convert hex digit A to a number. */ | |
421 | ||
422 | static int | |
fba45db2 | 423 | fromhex (int a) |
c906108c SS |
424 | { |
425 | if (a >= '0' && a <= '9') | |
426 | return a - '0'; | |
427 | else if (a >= 'a' && a <= 'f') | |
428 | return a - 'a' + 10; | |
429 | else | |
430 | error ("Reply contains invalid hex digit"); | |
0a30fbc4 | 431 | return 0; |
c906108c SS |
432 | } |
433 | ||
0fb4aa4b PA |
434 | #endif |
435 | ||
95954743 PA |
436 | static const char hexchars[] = "0123456789abcdef"; |
437 | ||
438 | static int | |
439 | ishex (int ch, int *val) | |
440 | { | |
441 | if ((ch >= 'a') && (ch <= 'f')) | |
442 | { | |
443 | *val = ch - 'a' + 10; | |
444 | return 1; | |
445 | } | |
446 | if ((ch >= 'A') && (ch <= 'F')) | |
447 | { | |
448 | *val = ch - 'A' + 10; | |
449 | return 1; | |
450 | } | |
451 | if ((ch >= '0') && (ch <= '9')) | |
452 | { | |
453 | *val = ch - '0'; | |
454 | return 1; | |
455 | } | |
456 | return 0; | |
457 | } | |
458 | ||
0fb4aa4b PA |
459 | #ifndef IN_PROCESS_AGENT |
460 | ||
ce3a066d DJ |
461 | int |
462 | unhexify (char *bin, const char *hex, int count) | |
463 | { | |
464 | int i; | |
465 | ||
466 | for (i = 0; i < count; i++) | |
467 | { | |
468 | if (hex[0] == 0 || hex[1] == 0) | |
1b3f6016 PA |
469 | { |
470 | /* Hex string is short, or of uneven length. | |
471 | Return the count that has been converted so far. */ | |
472 | return i; | |
473 | } | |
ce3a066d DJ |
474 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); |
475 | hex += 2; | |
476 | } | |
477 | return i; | |
478 | } | |
479 | ||
dae5f5cf | 480 | void |
2f2893d9 DJ |
481 | decode_address (CORE_ADDR *addrp, const char *start, int len) |
482 | { | |
483 | CORE_ADDR addr; | |
484 | char ch; | |
485 | int i; | |
486 | ||
487 | addr = 0; | |
488 | for (i = 0; i < len; i++) | |
489 | { | |
490 | ch = start[i]; | |
491 | addr = addr << 4; | |
492 | addr = addr | (fromhex (ch) & 0x0f); | |
493 | } | |
494 | *addrp = addr; | |
495 | } | |
496 | ||
89be2091 DJ |
497 | const char * |
498 | decode_address_to_semicolon (CORE_ADDR *addrp, const char *start) | |
499 | { | |
500 | const char *end; | |
501 | ||
502 | end = start; | |
503 | while (*end != '\0' && *end != ';') | |
504 | end++; | |
505 | ||
506 | decode_address (addrp, start, end - start); | |
507 | ||
508 | if (*end == ';') | |
509 | end++; | |
510 | return end; | |
511 | } | |
512 | ||
0fb4aa4b PA |
513 | #endif |
514 | ||
c906108c SS |
515 | /* Convert number NIB to a hex digit. */ |
516 | ||
517 | static int | |
fba45db2 | 518 | tohex (int nib) |
c906108c SS |
519 | { |
520 | if (nib < 10) | |
521 | return '0' + nib; | |
522 | else | |
523 | return 'a' + nib - 10; | |
524 | } | |
525 | ||
0fb4aa4b PA |
526 | #ifndef IN_PROCESS_AGENT |
527 | ||
ce3a066d DJ |
528 | int |
529 | hexify (char *hex, const char *bin, int count) | |
530 | { | |
531 | int i; | |
532 | ||
533 | /* May use a length, or a nul-terminated string as input. */ | |
534 | if (count == 0) | |
535 | count = strlen (bin); | |
536 | ||
537 | for (i = 0; i < count; i++) | |
538 | { | |
539 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
540 | *hex++ = tohex (*bin++ & 0xf); | |
541 | } | |
542 | *hex = 0; | |
543 | return i; | |
544 | } | |
545 | ||
01f9e8fa DJ |
546 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
547 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
548 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
549 | (which may be more than *OUT_LEN due to escape characters). The | |
550 | total number of bytes in the output buffer will be at most | |
551 | OUT_MAXLEN. */ | |
552 | ||
553 | int | |
554 | remote_escape_output (const gdb_byte *buffer, int len, | |
555 | gdb_byte *out_buf, int *out_len, | |
556 | int out_maxlen) | |
557 | { | |
558 | int input_index, output_index; | |
559 | ||
560 | output_index = 0; | |
561 | for (input_index = 0; input_index < len; input_index++) | |
562 | { | |
563 | gdb_byte b = buffer[input_index]; | |
564 | ||
565 | if (b == '$' || b == '#' || b == '}' || b == '*') | |
566 | { | |
567 | /* These must be escaped. */ | |
568 | if (output_index + 2 > out_maxlen) | |
569 | break; | |
570 | out_buf[output_index++] = '}'; | |
571 | out_buf[output_index++] = b ^ 0x20; | |
572 | } | |
573 | else | |
574 | { | |
575 | if (output_index + 1 > out_maxlen) | |
576 | break; | |
577 | out_buf[output_index++] = b; | |
578 | } | |
579 | } | |
580 | ||
581 | *out_len = input_index; | |
582 | return output_index; | |
583 | } | |
584 | ||
585 | /* Convert BUFFER, escaped data LEN bytes long, into binary data | |
586 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
587 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
588 | ||
589 | This function reverses remote_escape_output. It allows more | |
590 | escaped characters than that function does, in particular because | |
591 | '*' must be escaped to avoid the run-length encoding processing | |
592 | in reading packets. */ | |
593 | ||
594 | static int | |
595 | remote_unescape_input (const gdb_byte *buffer, int len, | |
596 | gdb_byte *out_buf, int out_maxlen) | |
597 | { | |
598 | int input_index, output_index; | |
599 | int escaped; | |
600 | ||
601 | output_index = 0; | |
602 | escaped = 0; | |
603 | for (input_index = 0; input_index < len; input_index++) | |
604 | { | |
605 | gdb_byte b = buffer[input_index]; | |
606 | ||
607 | if (output_index + 1 > out_maxlen) | |
608 | error ("Received too much data from the target."); | |
609 | ||
610 | if (escaped) | |
611 | { | |
612 | out_buf[output_index++] = b ^ 0x20; | |
613 | escaped = 0; | |
614 | } | |
615 | else if (b == '}') | |
616 | escaped = 1; | |
617 | else | |
618 | out_buf[output_index++] = b; | |
619 | } | |
620 | ||
621 | if (escaped) | |
622 | error ("Unmatched escape character in target response."); | |
623 | ||
624 | return output_index; | |
625 | } | |
626 | ||
5ffff7c1 DJ |
627 | /* Look for a sequence of characters which can be run-length encoded. |
628 | If there are any, update *CSUM and *P. Otherwise, output the | |
629 | single character. Return the number of characters consumed. */ | |
630 | ||
631 | static int | |
632 | try_rle (char *buf, int remaining, unsigned char *csum, char **p) | |
633 | { | |
634 | int n; | |
635 | ||
636 | /* Always output the character. */ | |
637 | *csum += buf[0]; | |
638 | *(*p)++ = buf[0]; | |
639 | ||
640 | /* Don't go past '~'. */ | |
641 | if (remaining > 97) | |
642 | remaining = 97; | |
643 | ||
644 | for (n = 1; n < remaining; n++) | |
645 | if (buf[n] != buf[0]) | |
646 | break; | |
647 | ||
648 | /* N is the index of the first character not the same as buf[0]. | |
649 | buf[0] is counted twice, so by decrementing N, we get the number | |
650 | of characters the RLE sequence will replace. */ | |
651 | n--; | |
652 | ||
653 | if (n < 3) | |
654 | return 1; | |
655 | ||
656 | /* Skip the frame characters. The manual says to skip '+' and '-' | |
657 | also, but there's no reason to. Unfortunately these two unusable | |
658 | characters double the encoded length of a four byte zero | |
659 | value. */ | |
660 | while (n + 29 == '$' || n + 29 == '#') | |
661 | n--; | |
662 | ||
663 | *csum += '*'; | |
664 | *(*p)++ = '*'; | |
665 | *csum += n + 29; | |
666 | *(*p)++ = n + 29; | |
667 | ||
668 | return n + 1; | |
669 | } | |
670 | ||
0fb4aa4b PA |
671 | #endif |
672 | ||
95954743 PA |
673 | char * |
674 | unpack_varlen_hex (char *buff, /* packet to parse */ | |
675 | ULONGEST *result) | |
676 | { | |
677 | int nibble; | |
678 | ULONGEST retval = 0; | |
679 | ||
680 | while (ishex (*buff, &nibble)) | |
681 | { | |
682 | buff++; | |
683 | retval = retval << 4; | |
684 | retval |= nibble & 0x0f; | |
685 | } | |
686 | *result = retval; | |
687 | return buff; | |
688 | } | |
689 | ||
0fb4aa4b PA |
690 | #ifndef IN_PROCESS_AGENT |
691 | ||
95954743 PA |
692 | /* Write a PTID to BUF. Returns BUF+CHARACTERS_WRITTEN. */ |
693 | ||
694 | char * | |
695 | write_ptid (char *buf, ptid_t ptid) | |
696 | { | |
697 | int pid, tid; | |
698 | ||
699 | if (multi_process) | |
700 | { | |
701 | pid = ptid_get_pid (ptid); | |
702 | if (pid < 0) | |
703 | buf += sprintf (buf, "p-%x.", -pid); | |
704 | else | |
705 | buf += sprintf (buf, "p%x.", pid); | |
706 | } | |
707 | tid = ptid_get_lwp (ptid); | |
708 | if (tid < 0) | |
709 | buf += sprintf (buf, "-%x", -tid); | |
710 | else | |
711 | buf += sprintf (buf, "%x", tid); | |
712 | ||
713 | return buf; | |
714 | } | |
715 | ||
716 | ULONGEST | |
717 | hex_or_minus_one (char *buf, char **obuf) | |
718 | { | |
719 | ULONGEST ret; | |
720 | ||
721 | if (strncmp (buf, "-1", 2) == 0) | |
722 | { | |
723 | ret = (ULONGEST) -1; | |
724 | buf += 2; | |
725 | } | |
726 | else | |
727 | buf = unpack_varlen_hex (buf, &ret); | |
728 | ||
729 | if (obuf) | |
730 | *obuf = buf; | |
731 | ||
732 | return ret; | |
733 | } | |
734 | ||
735 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
736 | passed the last parsed char. Returns null_ptid on error. */ | |
737 | ptid_t | |
738 | read_ptid (char *buf, char **obuf) | |
739 | { | |
740 | char *p = buf; | |
741 | char *pp; | |
742 | ULONGEST pid = 0, tid = 0; | |
743 | ||
744 | if (*p == 'p') | |
745 | { | |
746 | /* Multi-process ptid. */ | |
747 | pp = unpack_varlen_hex (p + 1, &pid); | |
748 | if (*pp != '.') | |
749 | error ("invalid remote ptid: %s\n", p); | |
750 | ||
751 | p = pp + 1; | |
752 | ||
753 | tid = hex_or_minus_one (p, &pp); | |
754 | ||
755 | if (obuf) | |
756 | *obuf = pp; | |
757 | return ptid_build (pid, tid, 0); | |
758 | } | |
759 | ||
760 | /* No multi-process. Just a tid. */ | |
761 | tid = hex_or_minus_one (p, &pp); | |
762 | ||
763 | /* Since the stub is not sending a process id, then default to | |
764 | what's in the current inferior. */ | |
fbd5db48 | 765 | pid = ptid_get_pid (current_ptid); |
95954743 PA |
766 | |
767 | if (obuf) | |
768 | *obuf = pp; | |
769 | return ptid_build (pid, tid, 0); | |
770 | } | |
771 | ||
e0f9f062 DE |
772 | /* Write COUNT bytes in BUF to the client. |
773 | The result is the number of bytes written or -1 if error. | |
774 | This may return less than COUNT. */ | |
775 | ||
776 | static int | |
777 | write_prim (const void *buf, int count) | |
778 | { | |
779 | if (remote_connection_is_stdio ()) | |
780 | return write (fileno (stdout), buf, count); | |
781 | else | |
782 | return write (remote_desc, buf, count); | |
783 | } | |
784 | ||
785 | /* Read COUNT bytes from the client and store in BUF. | |
786 | The result is the number of bytes read or -1 if error. | |
787 | This may return less than COUNT. */ | |
788 | ||
789 | static int | |
790 | read_prim (void *buf, int count) | |
791 | { | |
792 | if (remote_connection_is_stdio ()) | |
793 | return read (fileno (stdin), buf, count); | |
794 | else | |
795 | return read (remote_desc, buf, count); | |
796 | } | |
797 | ||
c906108c | 798 | /* Send a packet to the remote machine, with error checking. |
01f9e8fa DJ |
799 | The data of the packet is in BUF, and the length of the |
800 | packet is in CNT. Returns >= 0 on success, -1 otherwise. */ | |
c906108c | 801 | |
bd99dc85 PA |
802 | static int |
803 | putpkt_binary_1 (char *buf, int cnt, int is_notif) | |
c906108c SS |
804 | { |
805 | int i; | |
806 | unsigned char csum = 0; | |
0a30fbc4 | 807 | char *buf2; |
c906108c | 808 | char *p; |
bc3b5632 | 809 | int cc; |
c906108c | 810 | |
e6edda56 | 811 | buf2 = xmalloc (strlen ("$") + cnt + strlen ("#nn") + 1); |
0a30fbc4 | 812 | |
c906108c SS |
813 | /* Copy the packet into buffer BUF2, encapsulating it |
814 | and giving it a checksum. */ | |
815 | ||
816 | p = buf2; | |
bd99dc85 PA |
817 | if (is_notif) |
818 | *p++ = '%'; | |
819 | else | |
820 | *p++ = '$'; | |
c906108c | 821 | |
5ffff7c1 DJ |
822 | for (i = 0; i < cnt;) |
823 | i += try_rle (buf + i, cnt - i, &csum, &p); | |
824 | ||
c906108c SS |
825 | *p++ = '#'; |
826 | *p++ = tohex ((csum >> 4) & 0xf); | |
827 | *p++ = tohex (csum & 0xf); | |
828 | ||
829 | *p = '\0'; | |
830 | ||
831 | /* Send it over and over until we get a positive ack. */ | |
832 | ||
833 | do | |
834 | { | |
e0f9f062 | 835 | if (write_prim (buf2, p - buf2) != p - buf2) |
c906108c SS |
836 | { |
837 | perror ("putpkt(write)"); | |
f88c79e6 | 838 | free (buf2); |
c906108c SS |
839 | return -1; |
840 | } | |
841 | ||
bd99dc85 | 842 | if (noack_mode || is_notif) |
a6f3e723 SL |
843 | { |
844 | /* Don't expect an ack then. */ | |
845 | if (remote_debug) | |
846 | { | |
bd99dc85 PA |
847 | if (is_notif) |
848 | fprintf (stderr, "putpkt (\"%s\"); [notif]\n", buf2); | |
849 | else | |
850 | fprintf (stderr, "putpkt (\"%s\"); [noack mode]\n", buf2); | |
a6f3e723 SL |
851 | fflush (stderr); |
852 | } | |
853 | break; | |
854 | } | |
855 | ||
c906108c | 856 | if (remote_debug) |
0d62e5e8 DJ |
857 | { |
858 | fprintf (stderr, "putpkt (\"%s\"); [looking for ack]\n", buf2); | |
859 | fflush (stderr); | |
860 | } | |
0d62e5e8 | 861 | |
bc3b5632 | 862 | cc = readchar (); |
c906108c | 863 | |
bc3b5632 DE |
864 | if (cc < 0) |
865 | { | |
0a30fbc4 | 866 | free (buf2); |
c906108c SS |
867 | return -1; |
868 | } | |
0d62e5e8 | 869 | |
bc3b5632 DE |
870 | if (remote_debug) |
871 | { | |
872 | fprintf (stderr, "[received '%c' (0x%x)]\n", cc, cc); | |
873 | fflush (stderr); | |
874 | } | |
875 | ||
0d62e5e8 | 876 | /* Check for an input interrupt while we're here. */ |
bc3b5632 | 877 | if (cc == '\003' && current_inferior != NULL) |
ef57601b | 878 | (*the_target->request_interrupt) (); |
c906108c | 879 | } |
bc3b5632 | 880 | while (cc != '+'); |
c906108c | 881 | |
0a30fbc4 | 882 | free (buf2); |
c906108c SS |
883 | return 1; /* Success! */ |
884 | } | |
885 | ||
bd99dc85 PA |
886 | int |
887 | putpkt_binary (char *buf, int cnt) | |
888 | { | |
889 | return putpkt_binary_1 (buf, cnt, 0); | |
890 | } | |
891 | ||
01f9e8fa DJ |
892 | /* Send a packet to the remote machine, with error checking. The data |
893 | of the packet is in BUF, and the packet should be a NUL-terminated | |
894 | string. Returns >= 0 on success, -1 otherwise. */ | |
895 | ||
896 | int | |
897 | putpkt (char *buf) | |
898 | { | |
899 | return putpkt_binary (buf, strlen (buf)); | |
900 | } | |
901 | ||
bd99dc85 PA |
902 | int |
903 | putpkt_notif (char *buf) | |
904 | { | |
905 | return putpkt_binary_1 (buf, strlen (buf), 1); | |
906 | } | |
907 | ||
c906108c SS |
908 | /* Come here when we get an input interrupt from the remote side. This |
909 | interrupt should only be active while we are waiting for the child to do | |
bc3b5632 DE |
910 | something. Thus this assumes readchar:bufcnt is 0. |
911 | About the only thing that should come through is a ^C, which | |
ef57601b | 912 | will cause us to request child interruption. */ |
c906108c SS |
913 | |
914 | static void | |
0a30fbc4 | 915 | input_interrupt (int unused) |
c906108c | 916 | { |
cf30a8e1 C |
917 | fd_set readset; |
918 | struct timeval immediate = { 0, 0 }; | |
c906108c | 919 | |
cf30a8e1 C |
920 | /* Protect against spurious interrupts. This has been observed to |
921 | be a problem under NetBSD 1.4 and 1.5. */ | |
c906108c | 922 | |
cf30a8e1 C |
923 | FD_ZERO (&readset); |
924 | FD_SET (remote_desc, &readset); | |
925 | if (select (remote_desc + 1, &readset, 0, 0, &immediate) > 0) | |
c906108c | 926 | { |
cf30a8e1 | 927 | int cc; |
fd500816 | 928 | char c = 0; |
7390519e | 929 | |
e0f9f062 | 930 | cc = read_prim (&c, 1); |
c906108c | 931 | |
2d717e4f | 932 | if (cc != 1 || c != '\003' || current_inferior == NULL) |
cf30a8e1 | 933 | { |
fd500816 DJ |
934 | fprintf (stderr, "input_interrupt, count = %d c = %d ('%c')\n", |
935 | cc, c, c); | |
cf30a8e1 C |
936 | return; |
937 | } | |
7390519e | 938 | |
ef57601b | 939 | (*the_target->request_interrupt) (); |
cf30a8e1 | 940 | } |
c906108c | 941 | } |
7390519e PA |
942 | |
943 | /* Check if the remote side sent us an interrupt request (^C). */ | |
944 | void | |
945 | check_remote_input_interrupt_request (void) | |
946 | { | |
947 | /* This function may be called before establishing communications, | |
948 | therefore we need to validate the remote descriptor. */ | |
949 | ||
950 | if (remote_desc == INVALID_DESCRIPTOR) | |
951 | return; | |
952 | ||
953 | input_interrupt (0); | |
954 | } | |
b80864fb DJ |
955 | |
956 | /* Asynchronous I/O support. SIGIO must be enabled when waiting, in order to | |
957 | accept Control-C from the client, and must be disabled when talking to | |
958 | the client. */ | |
c906108c | 959 | |
a20d5e98 | 960 | static void |
62ea82f5 DJ |
961 | unblock_async_io (void) |
962 | { | |
b80864fb | 963 | #ifndef USE_WIN32API |
62ea82f5 | 964 | sigset_t sigio_set; |
a20d5e98 | 965 | |
62ea82f5 DJ |
966 | sigemptyset (&sigio_set); |
967 | sigaddset (&sigio_set, SIGIO); | |
968 | sigprocmask (SIG_UNBLOCK, &sigio_set, NULL); | |
b80864fb | 969 | #endif |
62ea82f5 DJ |
970 | } |
971 | ||
ac8c974e AR |
972 | #ifdef __QNX__ |
973 | static void | |
974 | nto_comctrl (int enable) | |
975 | { | |
976 | struct sigevent event; | |
977 | ||
978 | if (enable) | |
979 | { | |
980 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
981 | event.sigev_signo = SIGIO; | |
982 | event.sigev_code = 0; | |
983 | event.sigev_value.sival_ptr = NULL; | |
984 | event.sigev_priority = -1; | |
985 | ionotify (remote_desc, _NOTIFY_ACTION_POLLARM, _NOTIFY_COND_INPUT, | |
986 | &event); | |
987 | } | |
988 | else | |
989 | ionotify (remote_desc, _NOTIFY_ACTION_POLL, _NOTIFY_COND_INPUT, NULL); | |
990 | } | |
991 | #endif /* __QNX__ */ | |
992 | ||
993 | ||
fd500816 DJ |
994 | /* Current state of asynchronous I/O. */ |
995 | static int async_io_enabled; | |
996 | ||
997 | /* Enable asynchronous I/O. */ | |
c906108c | 998 | void |
fba45db2 | 999 | enable_async_io (void) |
c906108c | 1000 | { |
fd500816 DJ |
1001 | if (async_io_enabled) |
1002 | return; | |
1003 | ||
b80864fb | 1004 | #ifndef USE_WIN32API |
c906108c | 1005 | signal (SIGIO, input_interrupt); |
b80864fb | 1006 | #endif |
fd500816 | 1007 | async_io_enabled = 1; |
ac8c974e AR |
1008 | #ifdef __QNX__ |
1009 | nto_comctrl (1); | |
1010 | #endif /* __QNX__ */ | |
c906108c SS |
1011 | } |
1012 | ||
fd500816 | 1013 | /* Disable asynchronous I/O. */ |
c906108c | 1014 | void |
fba45db2 | 1015 | disable_async_io (void) |
c906108c | 1016 | { |
fd500816 DJ |
1017 | if (!async_io_enabled) |
1018 | return; | |
1019 | ||
b80864fb | 1020 | #ifndef USE_WIN32API |
c906108c | 1021 | signal (SIGIO, SIG_IGN); |
b80864fb | 1022 | #endif |
fd500816 | 1023 | async_io_enabled = 0; |
ac8c974e AR |
1024 | #ifdef __QNX__ |
1025 | nto_comctrl (0); | |
1026 | #endif /* __QNX__ */ | |
1027 | ||
c906108c SS |
1028 | } |
1029 | ||
a20d5e98 DJ |
1030 | void |
1031 | initialize_async_io (void) | |
1032 | { | |
1033 | /* Make sure that async I/O starts disabled. */ | |
1034 | async_io_enabled = 1; | |
1035 | disable_async_io (); | |
1036 | ||
1037 | /* Make sure the signal is unblocked. */ | |
1038 | unblock_async_io (); | |
1039 | } | |
1040 | ||
24b066ba DE |
1041 | /* Internal buffer used by readchar. |
1042 | These are global to readchar because reschedule_remote needs to be | |
1043 | able to tell whether the buffer is empty. */ | |
1044 | ||
1045 | static unsigned char readchar_buf[BUFSIZ]; | |
1046 | static int readchar_bufcnt = 0; | |
1047 | static unsigned char *readchar_bufp; | |
1048 | ||
c906108c SS |
1049 | /* Returns next char from remote GDB. -1 if error. */ |
1050 | ||
1051 | static int | |
fba45db2 | 1052 | readchar (void) |
c906108c | 1053 | { |
24b066ba | 1054 | int ch; |
c906108c | 1055 | |
24b066ba DE |
1056 | if (readchar_bufcnt == 0) |
1057 | { | |
e0f9f062 | 1058 | readchar_bufcnt = read_prim (readchar_buf, sizeof (readchar_buf)); |
c906108c | 1059 | |
24b066ba DE |
1060 | if (readchar_bufcnt <= 0) |
1061 | { | |
1062 | if (readchar_bufcnt == 0) | |
1063 | fprintf (stderr, "readchar: Got EOF\n"); | |
1064 | else | |
1065 | perror ("readchar"); | |
c906108c | 1066 | |
24b066ba DE |
1067 | return -1; |
1068 | } | |
c906108c | 1069 | |
24b066ba | 1070 | readchar_bufp = readchar_buf; |
c906108c SS |
1071 | } |
1072 | ||
24b066ba DE |
1073 | readchar_bufcnt--; |
1074 | ch = *readchar_bufp++; | |
1075 | reschedule (); | |
1076 | return ch; | |
1077 | } | |
1078 | ||
1079 | /* Reset the readchar state machine. */ | |
1080 | ||
1081 | static void | |
1082 | reset_readchar (void) | |
1083 | { | |
1084 | readchar_bufcnt = 0; | |
1085 | if (readchar_callback != NOT_SCHEDULED) | |
1086 | { | |
1087 | delete_callback_event (readchar_callback); | |
1088 | readchar_callback = NOT_SCHEDULED; | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | /* Process remaining data in readchar_buf. */ | |
1093 | ||
1094 | static int | |
1095 | process_remaining (void *context) | |
1096 | { | |
1097 | int res; | |
1098 | ||
1099 | /* This is a one-shot event. */ | |
1100 | readchar_callback = NOT_SCHEDULED; | |
1101 | ||
1102 | if (readchar_bufcnt > 0) | |
1103 | res = handle_serial_event (0, NULL); | |
1104 | else | |
1105 | res = 0; | |
1106 | ||
1107 | return res; | |
1108 | } | |
1109 | ||
1110 | /* If there is still data in the buffer, queue another event to process it, | |
1111 | we can't sleep in select yet. */ | |
1112 | ||
1113 | static void | |
1114 | reschedule (void) | |
1115 | { | |
1116 | if (readchar_bufcnt > 0 && readchar_callback == NOT_SCHEDULED) | |
1117 | readchar_callback = append_callback_event (process_remaining, NULL); | |
c906108c SS |
1118 | } |
1119 | ||
1120 | /* Read a packet from the remote machine, with error checking, | |
1121 | and store it in BUF. Returns length of packet, or negative if error. */ | |
1122 | ||
1123 | int | |
fba45db2 | 1124 | getpkt (char *buf) |
c906108c SS |
1125 | { |
1126 | char *bp; | |
1127 | unsigned char csum, c1, c2; | |
1128 | int c; | |
1129 | ||
1130 | while (1) | |
1131 | { | |
1132 | csum = 0; | |
1133 | ||
1134 | while (1) | |
1135 | { | |
1136 | c = readchar (); | |
1137 | if (c == '$') | |
1138 | break; | |
1139 | if (remote_debug) | |
0d62e5e8 DJ |
1140 | { |
1141 | fprintf (stderr, "[getpkt: discarding char '%c']\n", c); | |
1142 | fflush (stderr); | |
1143 | } | |
1144 | ||
c906108c SS |
1145 | if (c < 0) |
1146 | return -1; | |
1147 | } | |
1148 | ||
1149 | bp = buf; | |
1150 | while (1) | |
1151 | { | |
1152 | c = readchar (); | |
1153 | if (c < 0) | |
1154 | return -1; | |
1155 | if (c == '#') | |
1156 | break; | |
1157 | *bp++ = c; | |
1158 | csum += c; | |
1159 | } | |
1160 | *bp = 0; | |
1161 | ||
1162 | c1 = fromhex (readchar ()); | |
1163 | c2 = fromhex (readchar ()); | |
c5aa993b | 1164 | |
c906108c SS |
1165 | if (csum == (c1 << 4) + c2) |
1166 | break; | |
1167 | ||
a6f3e723 SL |
1168 | if (noack_mode) |
1169 | { | |
493e2a69 MS |
1170 | fprintf (stderr, |
1171 | "Bad checksum, sentsum=0x%x, csum=0x%x, " | |
1172 | "buf=%s [no-ack-mode, Bad medium?]\n", | |
a6f3e723 SL |
1173 | (c1 << 4) + c2, csum, buf); |
1174 | /* Not much we can do, GDB wasn't expecting an ack/nac. */ | |
1175 | break; | |
1176 | } | |
1177 | ||
c906108c SS |
1178 | fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n", |
1179 | (c1 << 4) + c2, csum, buf); | |
e0f9f062 | 1180 | if (write_prim ("-", 1) != 1) |
e581f2b4 | 1181 | return -1; |
c906108c SS |
1182 | } |
1183 | ||
a6f3e723 | 1184 | if (!noack_mode) |
0d62e5e8 | 1185 | { |
a6f3e723 SL |
1186 | if (remote_debug) |
1187 | { | |
1188 | fprintf (stderr, "getpkt (\"%s\"); [sending ack] \n", buf); | |
1189 | fflush (stderr); | |
1190 | } | |
c906108c | 1191 | |
e0f9f062 | 1192 | if (write_prim ("+", 1) != 1) |
e581f2b4 | 1193 | return -1; |
c906108c | 1194 | |
a6f3e723 SL |
1195 | if (remote_debug) |
1196 | { | |
1197 | fprintf (stderr, "[sent ack]\n"); | |
1198 | fflush (stderr); | |
1199 | } | |
0d62e5e8 | 1200 | } |
86b1f9c5 PM |
1201 | else |
1202 | { | |
1203 | if (remote_debug) | |
1204 | { | |
1205 | fprintf (stderr, "getpkt (\"%s\"); [no ack sent] \n", buf); | |
1206 | fflush (stderr); | |
1207 | } | |
1208 | } | |
0d62e5e8 | 1209 | |
c906108c SS |
1210 | return bp - buf; |
1211 | } | |
1212 | ||
1213 | void | |
fba45db2 | 1214 | write_ok (char *buf) |
c906108c SS |
1215 | { |
1216 | buf[0] = 'O'; | |
1217 | buf[1] = 'K'; | |
1218 | buf[2] = '\0'; | |
1219 | } | |
1220 | ||
1221 | void | |
fba45db2 | 1222 | write_enn (char *buf) |
c906108c | 1223 | { |
c89dc5d4 | 1224 | /* Some day, we should define the meanings of the error codes... */ |
c906108c | 1225 | buf[0] = 'E'; |
c89dc5d4 DJ |
1226 | buf[1] = '0'; |
1227 | buf[2] = '1'; | |
c906108c SS |
1228 | buf[3] = '\0'; |
1229 | } | |
1230 | ||
0fb4aa4b PA |
1231 | #endif |
1232 | ||
c906108c | 1233 | void |
fa593d66 | 1234 | convert_int_to_ascii (const unsigned char *from, char *to, int n) |
c906108c SS |
1235 | { |
1236 | int nib; | |
f450004a | 1237 | int ch; |
c906108c SS |
1238 | while (n--) |
1239 | { | |
1240 | ch = *from++; | |
1241 | nib = ((ch & 0xf0) >> 4) & 0x0f; | |
1242 | *to++ = tohex (nib); | |
1243 | nib = ch & 0x0f; | |
1244 | *to++ = tohex (nib); | |
1245 | } | |
1246 | *to++ = 0; | |
1247 | } | |
1248 | ||
0fb4aa4b | 1249 | #ifndef IN_PROCESS_AGENT |
c906108c SS |
1250 | |
1251 | void | |
fa593d66 | 1252 | convert_ascii_to_int (const char *from, unsigned char *to, int n) |
c906108c SS |
1253 | { |
1254 | int nib1, nib2; | |
1255 | while (n--) | |
1256 | { | |
1257 | nib1 = fromhex (*from++); | |
1258 | nib2 = fromhex (*from++); | |
1259 | *to++ = (((nib1 & 0x0f) << 4) & 0xf0) | (nib2 & 0x0f); | |
1260 | } | |
1261 | } | |
1262 | ||
1263 | static char * | |
442ea881 | 1264 | outreg (struct regcache *regcache, int regno, char *buf) |
c906108c | 1265 | { |
5c44784c JM |
1266 | if ((regno >> 12) != 0) |
1267 | *buf++ = tohex ((regno >> 12) & 0xf); | |
1268 | if ((regno >> 8) != 0) | |
1269 | *buf++ = tohex ((regno >> 8) & 0xf); | |
1270 | *buf++ = tohex ((regno >> 4) & 0xf); | |
c906108c SS |
1271 | *buf++ = tohex (regno & 0xf); |
1272 | *buf++ = ':'; | |
442ea881 | 1273 | collect_register_as_string (regcache, regno, buf); |
3aee8918 | 1274 | buf += 2 * register_size (regcache->tdesc, regno); |
c906108c SS |
1275 | *buf++ = ';'; |
1276 | ||
1277 | return buf; | |
1278 | } | |
1279 | ||
0d62e5e8 DJ |
1280 | void |
1281 | new_thread_notify (int id) | |
1282 | { | |
1283 | char own_buf[256]; | |
1284 | ||
1285 | /* The `n' response is not yet part of the remote protocol. Do nothing. */ | |
1286 | if (1) | |
1287 | return; | |
1288 | ||
1289 | if (server_waiting == 0) | |
1290 | return; | |
1291 | ||
1292 | sprintf (own_buf, "n%x", id); | |
1293 | disable_async_io (); | |
1294 | putpkt (own_buf); | |
1295 | enable_async_io (); | |
1296 | } | |
1297 | ||
1298 | void | |
1299 | dead_thread_notify (int id) | |
1300 | { | |
1301 | char own_buf[256]; | |
1302 | ||
1303 | /* The `x' response is not yet part of the remote protocol. Do nothing. */ | |
1304 | if (1) | |
1305 | return; | |
1306 | ||
1307 | sprintf (own_buf, "x%x", id); | |
1308 | disable_async_io (); | |
1309 | putpkt (own_buf); | |
1310 | enable_async_io (); | |
1311 | } | |
1312 | ||
c906108c | 1313 | void |
95954743 | 1314 | prepare_resume_reply (char *buf, ptid_t ptid, |
5b1c542e | 1315 | struct target_waitstatus *status) |
c906108c | 1316 | { |
5b1c542e | 1317 | if (debug_threads) |
e77616d7 | 1318 | fprintf (stderr, "Writing resume reply for %s:%d\n", |
95954743 | 1319 | target_pid_to_str (ptid), status->kind); |
c906108c | 1320 | |
5b1c542e | 1321 | switch (status->kind) |
c906108c | 1322 | { |
5b1c542e PA |
1323 | case TARGET_WAITKIND_STOPPED: |
1324 | { | |
1325 | struct thread_info *saved_inferior; | |
1326 | const char **regp; | |
442ea881 | 1327 | struct regcache *regcache; |
e013ee27 | 1328 | |
5b1c542e PA |
1329 | sprintf (buf, "T%02x", status->value.sig); |
1330 | buf += strlen (buf); | |
e013ee27 | 1331 | |
5b1c542e | 1332 | saved_inferior = current_inferior; |
e013ee27 | 1333 | |
e09875d4 | 1334 | current_inferior = find_thread_ptid (ptid); |
e013ee27 | 1335 | |
3aee8918 PA |
1336 | regp = current_target_desc ()->expedite_regs; |
1337 | ||
442ea881 PA |
1338 | regcache = get_thread_regcache (current_inferior, 1); |
1339 | ||
5b1c542e PA |
1340 | if (the_target->stopped_by_watchpoint != NULL |
1341 | && (*the_target->stopped_by_watchpoint) ()) | |
1342 | { | |
1343 | CORE_ADDR addr; | |
1344 | int i; | |
c906108c | 1345 | |
5b1c542e PA |
1346 | strncpy (buf, "watch:", 6); |
1347 | buf += 6; | |
0d62e5e8 | 1348 | |
5b1c542e | 1349 | addr = (*the_target->stopped_data_address) (); |
255e7678 | 1350 | |
5b1c542e PA |
1351 | /* Convert each byte of the address into two hexadecimal |
1352 | chars. Note that we take sizeof (void *) instead of | |
1353 | sizeof (addr); this is to avoid sending a 64-bit | |
1354 | address to a 32-bit GDB. */ | |
1355 | for (i = sizeof (void *) * 2; i > 0; i--) | |
1356 | *buf++ = tohex ((addr >> (i - 1) * 4) & 0xf); | |
1357 | *buf++ = ';'; | |
1358 | } | |
1359 | ||
1360 | while (*regp) | |
1361 | { | |
3aee8918 | 1362 | buf = outreg (regcache, find_regno (regcache->tdesc, *regp), buf); |
5b1c542e PA |
1363 | regp ++; |
1364 | } | |
5472f405 | 1365 | *buf = '\0'; |
5b1c542e PA |
1366 | |
1367 | /* Formerly, if the debugger had not used any thread features | |
1368 | we would not burden it with a thread status response. This | |
1369 | was for the benefit of GDB 4.13 and older. However, in | |
1370 | recent GDB versions the check (``if (cont_thread != 0)'') | |
1371 | does not have the desired effect because of sillyness in | |
1372 | the way that the remote protocol handles specifying a | |
1373 | thread. Since thread support relies on qSymbol support | |
1374 | anyway, assume GDB can handle threads. */ | |
1375 | ||
1376 | if (using_threads && !disable_packet_Tthread) | |
1377 | { | |
1378 | /* This if (1) ought to be unnecessary. But remote_wait | |
1379 | in GDB will claim this event belongs to inferior_ptid | |
1380 | if we do not specify a thread, and there's no way for | |
1381 | gdbserver to know what inferior_ptid is. */ | |
95954743 | 1382 | if (1 || !ptid_equal (general_thread, ptid)) |
5b1c542e | 1383 | { |
dc146f7c | 1384 | int core = -1; |
bd99dc85 PA |
1385 | /* In non-stop, don't change the general thread behind |
1386 | GDB's back. */ | |
1387 | if (!non_stop) | |
1388 | general_thread = ptid; | |
95954743 PA |
1389 | sprintf (buf, "thread:"); |
1390 | buf += strlen (buf); | |
1391 | buf = write_ptid (buf, ptid); | |
1392 | strcat (buf, ";"); | |
5b1c542e | 1393 | buf += strlen (buf); |
dc146f7c | 1394 | |
3e10640f YQ |
1395 | core = target_core_of_thread (ptid); |
1396 | ||
dc146f7c VP |
1397 | if (core != -1) |
1398 | { | |
1399 | sprintf (buf, "core:"); | |
1400 | buf += strlen (buf); | |
1401 | sprintf (buf, "%x", core); | |
1402 | strcat (buf, ";"); | |
1403 | buf += strlen (buf); | |
1404 | } | |
5b1c542e PA |
1405 | } |
1406 | } | |
1407 | ||
1408 | if (dlls_changed) | |
1409 | { | |
1410 | strcpy (buf, "library:;"); | |
1411 | buf += strlen (buf); | |
1412 | dlls_changed = 0; | |
1413 | } | |
1414 | ||
1415 | current_inferior = saved_inferior; | |
1416 | } | |
1417 | break; | |
1418 | case TARGET_WAITKIND_EXITED: | |
95954743 PA |
1419 | if (multi_process) |
1420 | sprintf (buf, "W%x;process:%x", | |
1421 | status->value.integer, ptid_get_pid (ptid)); | |
1422 | else | |
1423 | sprintf (buf, "W%02x", status->value.integer); | |
5b1c542e PA |
1424 | break; |
1425 | case TARGET_WAITKIND_SIGNALLED: | |
95954743 PA |
1426 | if (multi_process) |
1427 | sprintf (buf, "X%x;process:%x", | |
1428 | status->value.sig, ptid_get_pid (ptid)); | |
1429 | else | |
1430 | sprintf (buf, "X%02x", status->value.sig); | |
5b1c542e PA |
1431 | break; |
1432 | default: | |
1433 | error ("unhandled waitkind"); | |
1434 | break; | |
c906108c | 1435 | } |
c906108c SS |
1436 | } |
1437 | ||
1438 | void | |
fba45db2 | 1439 | decode_m_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr) |
c906108c SS |
1440 | { |
1441 | int i = 0, j = 0; | |
1442 | char ch; | |
1443 | *mem_addr_ptr = *len_ptr = 0; | |
1444 | ||
1445 | while ((ch = from[i++]) != ',') | |
1446 | { | |
1447 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1448 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1449 | } | |
1450 | ||
1451 | for (j = 0; j < 4; j++) | |
1452 | { | |
1453 | if ((ch = from[i++]) == 0) | |
1454 | break; | |
1455 | *len_ptr = *len_ptr << 4; | |
1456 | *len_ptr |= fromhex (ch) & 0x0f; | |
1457 | } | |
1458 | } | |
1459 | ||
1460 | void | |
fba45db2 | 1461 | decode_M_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr, |
fa593d66 | 1462 | unsigned char **to_p) |
c906108c SS |
1463 | { |
1464 | int i = 0; | |
1465 | char ch; | |
1466 | *mem_addr_ptr = *len_ptr = 0; | |
1467 | ||
1468 | while ((ch = from[i++]) != ',') | |
1469 | { | |
1470 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1471 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1472 | } | |
1473 | ||
1474 | while ((ch = from[i++]) != ':') | |
1475 | { | |
1476 | *len_ptr = *len_ptr << 4; | |
1477 | *len_ptr |= fromhex (ch) & 0x0f; | |
1478 | } | |
1479 | ||
fa593d66 PA |
1480 | if (*to_p == NULL) |
1481 | *to_p = xmalloc (*len_ptr); | |
1482 | ||
1483 | convert_ascii_to_int (&from[i++], *to_p, *len_ptr); | |
c906108c | 1484 | } |
2f2893d9 | 1485 | |
01f9e8fa DJ |
1486 | int |
1487 | decode_X_packet (char *from, int packet_len, CORE_ADDR *mem_addr_ptr, | |
fa593d66 | 1488 | unsigned int *len_ptr, unsigned char **to_p) |
01f9e8fa DJ |
1489 | { |
1490 | int i = 0; | |
1491 | char ch; | |
1492 | *mem_addr_ptr = *len_ptr = 0; | |
1493 | ||
1494 | while ((ch = from[i++]) != ',') | |
1495 | { | |
1496 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1497 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1498 | } | |
1499 | ||
1500 | while ((ch = from[i++]) != ':') | |
1501 | { | |
1502 | *len_ptr = *len_ptr << 4; | |
1503 | *len_ptr |= fromhex (ch) & 0x0f; | |
1504 | } | |
1505 | ||
fa593d66 PA |
1506 | if (*to_p == NULL) |
1507 | *to_p = xmalloc (*len_ptr); | |
1508 | ||
01f9e8fa | 1509 | if (remote_unescape_input ((const gdb_byte *) &from[i], packet_len - i, |
fa593d66 | 1510 | *to_p, *len_ptr) != *len_ptr) |
01f9e8fa DJ |
1511 | return -1; |
1512 | ||
1513 | return 0; | |
1514 | } | |
1515 | ||
0e7f50da | 1516 | /* Decode a qXfer write request. */ |
d08aafef | 1517 | |
0e7f50da | 1518 | int |
d08aafef | 1519 | decode_xfer_write (char *buf, int packet_len, CORE_ADDR *offset, |
0e7f50da UW |
1520 | unsigned int *len, unsigned char *data) |
1521 | { | |
1522 | char ch; | |
d08aafef | 1523 | char *b = buf; |
0e7f50da UW |
1524 | |
1525 | /* Extract the offset. */ | |
1526 | *offset = 0; | |
1527 | while ((ch = *buf++) != ':') | |
1528 | { | |
1529 | *offset = *offset << 4; | |
1530 | *offset |= fromhex (ch) & 0x0f; | |
1531 | } | |
1532 | ||
1533 | /* Get encoded data. */ | |
d08aafef | 1534 | packet_len -= buf - b; |
0e7f50da UW |
1535 | *len = remote_unescape_input ((const gdb_byte *) buf, packet_len, |
1536 | data, packet_len); | |
1537 | return 0; | |
1538 | } | |
1539 | ||
08388c79 DE |
1540 | /* Decode the parameters of a qSearch:memory packet. */ |
1541 | ||
1542 | int | |
1543 | decode_search_memory_packet (const char *buf, int packet_len, | |
1544 | CORE_ADDR *start_addrp, | |
1545 | CORE_ADDR *search_space_lenp, | |
1546 | gdb_byte *pattern, unsigned int *pattern_lenp) | |
1547 | { | |
1548 | const char *p = buf; | |
1549 | ||
1550 | p = decode_address_to_semicolon (start_addrp, p); | |
1551 | p = decode_address_to_semicolon (search_space_lenp, p); | |
1552 | packet_len -= p - buf; | |
1553 | *pattern_lenp = remote_unescape_input ((const gdb_byte *) p, packet_len, | |
1554 | pattern, packet_len); | |
1555 | return 0; | |
1556 | } | |
1557 | ||
95954743 PA |
1558 | static void |
1559 | free_sym_cache (struct sym_cache *sym) | |
1560 | { | |
1561 | if (sym != NULL) | |
1562 | { | |
1563 | free (sym->name); | |
1564 | free (sym); | |
1565 | } | |
1566 | } | |
1567 | ||
1568 | void | |
1569 | clear_symbol_cache (struct sym_cache **symcache_p) | |
1570 | { | |
1571 | struct sym_cache *sym, *next; | |
1572 | ||
1573 | /* Check the cache first. */ | |
1574 | for (sym = *symcache_p; sym; sym = next) | |
1575 | { | |
1576 | next = sym->next; | |
1577 | free_sym_cache (sym); | |
1578 | } | |
1579 | ||
1580 | *symcache_p = NULL; | |
1581 | } | |
1582 | ||
9836d6ea PA |
1583 | /* Get the address of NAME, and return it in ADDRP if found. if |
1584 | MAY_ASK_GDB is false, assume symbol cache misses are failures. | |
fd500816 DJ |
1585 | Returns 1 if the symbol is found, 0 if it is not, -1 on error. */ |
1586 | ||
2f2893d9 | 1587 | int |
9836d6ea | 1588 | look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb) |
2f2893d9 DJ |
1589 | { |
1590 | char own_buf[266], *p, *q; | |
1591 | int len; | |
fd500816 | 1592 | struct sym_cache *sym; |
95954743 PA |
1593 | struct process_info *proc; |
1594 | ||
1595 | proc = current_process (); | |
fd500816 DJ |
1596 | |
1597 | /* Check the cache first. */ | |
95954743 | 1598 | for (sym = proc->symbol_cache; sym; sym = sym->next) |
fd500816 DJ |
1599 | if (strcmp (name, sym->name) == 0) |
1600 | { | |
1601 | *addrp = sym->addr; | |
1602 | return 1; | |
1603 | } | |
2f2893d9 | 1604 | |
9836d6ea PA |
1605 | /* It might not be an appropriate time to look up a symbol, |
1606 | e.g. while we're trying to fetch registers. */ | |
1607 | if (!may_ask_gdb) | |
ea025f5f DJ |
1608 | return 0; |
1609 | ||
2f2893d9 DJ |
1610 | /* Send the request. */ |
1611 | strcpy (own_buf, "qSymbol:"); | |
1612 | hexify (own_buf + strlen ("qSymbol:"), name, strlen (name)); | |
1613 | if (putpkt (own_buf) < 0) | |
1614 | return -1; | |
1615 | ||
1616 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
1617 | len = getpkt (own_buf); | |
1618 | if (len < 0) | |
1619 | return -1; | |
1620 | ||
2bbe3cc1 DJ |
1621 | /* We ought to handle pretty much any packet at this point while we |
1622 | wait for the qSymbol "response". That requires re-entering the | |
1623 | main loop. For now, this is an adequate approximation; allow | |
1624 | GDB to read from memory while it figures out the address of the | |
1625 | symbol. */ | |
1626 | while (own_buf[0] == 'm') | |
1627 | { | |
1628 | CORE_ADDR mem_addr; | |
1629 | unsigned char *mem_buf; | |
1630 | unsigned int mem_len; | |
1631 | ||
1632 | decode_m_packet (&own_buf[1], &mem_addr, &mem_len); | |
bca929d3 | 1633 | mem_buf = xmalloc (mem_len); |
2bbe3cc1 DJ |
1634 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) |
1635 | convert_int_to_ascii (mem_buf, own_buf, mem_len); | |
1636 | else | |
1637 | write_enn (own_buf); | |
1638 | free (mem_buf); | |
1639 | if (putpkt (own_buf) < 0) | |
1640 | return -1; | |
1641 | len = getpkt (own_buf); | |
1642 | if (len < 0) | |
1643 | return -1; | |
1644 | } | |
1b3f6016 | 1645 | |
2f2893d9 DJ |
1646 | if (strncmp (own_buf, "qSymbol:", strlen ("qSymbol:")) != 0) |
1647 | { | |
2bbe3cc1 | 1648 | warning ("Malformed response to qSymbol, ignoring: %s\n", own_buf); |
2f2893d9 DJ |
1649 | return -1; |
1650 | } | |
1651 | ||
1652 | p = own_buf + strlen ("qSymbol:"); | |
1653 | q = p; | |
1654 | while (*q && *q != ':') | |
1655 | q++; | |
1656 | ||
1657 | /* Make sure we found a value for the symbol. */ | |
1658 | if (p == q || *q == '\0') | |
1659 | return 0; | |
1660 | ||
1661 | decode_address (addrp, p, q - p); | |
fd500816 DJ |
1662 | |
1663 | /* Save the symbol in our cache. */ | |
bca929d3 DE |
1664 | sym = xmalloc (sizeof (*sym)); |
1665 | sym->name = xstrdup (name); | |
fd500816 | 1666 | sym->addr = *addrp; |
95954743 PA |
1667 | sym->next = proc->symbol_cache; |
1668 | proc->symbol_cache = sym; | |
fd500816 | 1669 | |
2f2893d9 DJ |
1670 | return 1; |
1671 | } | |
c74d0ad8 | 1672 | |
fa593d66 PA |
1673 | /* Relocate an instruction to execute at a different address. OLDLOC |
1674 | is the address in the inferior memory where the instruction to | |
1675 | relocate is currently at. On input, TO points to the destination | |
1676 | where we want the instruction to be copied (and possibly adjusted) | |
1677 | to. On output, it points to one past the end of the resulting | |
1678 | instruction(s). The effect of executing the instruction at TO | |
86a30030 | 1679 | shall be the same as if executing it at OLDLOC. For example, call |
fa593d66 PA |
1680 | instructions that implicitly push the return address on the stack |
1681 | should be adjusted to return to the instruction after OLDLOC; | |
1682 | relative branches, and other PC-relative instructions need the | |
1683 | offset adjusted; etc. Returns 0 on success, -1 on failure. */ | |
1684 | ||
1685 | int | |
1686 | relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc) | |
1687 | { | |
1688 | char own_buf[266]; | |
1689 | int len; | |
1690 | ULONGEST written = 0; | |
1691 | ||
1692 | /* Send the request. */ | |
1693 | strcpy (own_buf, "qRelocInsn:"); | |
1694 | sprintf (own_buf, "qRelocInsn:%s;%s", paddress (oldloc), | |
1695 | paddress (*to)); | |
1696 | if (putpkt (own_buf) < 0) | |
1697 | return -1; | |
1698 | ||
1699 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
1700 | len = getpkt (own_buf); | |
1701 | if (len < 0) | |
1702 | return -1; | |
1703 | ||
1704 | /* We ought to handle pretty much any packet at this point while we | |
1705 | wait for the qRelocInsn "response". That requires re-entering | |
1706 | the main loop. For now, this is an adequate approximation; allow | |
1707 | GDB to access memory. */ | |
1708 | while (own_buf[0] == 'm' || own_buf[0] == 'M' || own_buf[0] == 'X') | |
1709 | { | |
1710 | CORE_ADDR mem_addr; | |
1711 | unsigned char *mem_buf = NULL; | |
1712 | unsigned int mem_len; | |
1713 | ||
1714 | if (own_buf[0] == 'm') | |
1715 | { | |
1716 | decode_m_packet (&own_buf[1], &mem_addr, &mem_len); | |
1717 | mem_buf = xmalloc (mem_len); | |
1718 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) | |
1719 | convert_int_to_ascii (mem_buf, own_buf, mem_len); | |
1720 | else | |
1721 | write_enn (own_buf); | |
1722 | } | |
1723 | else if (own_buf[0] == 'X') | |
1724 | { | |
1725 | if (decode_X_packet (&own_buf[1], len - 1, &mem_addr, | |
1726 | &mem_len, &mem_buf) < 0 | |
1727 | || write_inferior_memory (mem_addr, mem_buf, mem_len) != 0) | |
1728 | write_enn (own_buf); | |
1729 | else | |
1730 | write_ok (own_buf); | |
1731 | } | |
1732 | else | |
1733 | { | |
1734 | decode_M_packet (&own_buf[1], &mem_addr, &mem_len, &mem_buf); | |
1735 | if (write_inferior_memory (mem_addr, mem_buf, mem_len) == 0) | |
1736 | write_ok (own_buf); | |
1737 | else | |
1738 | write_enn (own_buf); | |
1739 | } | |
1740 | free (mem_buf); | |
1741 | if (putpkt (own_buf) < 0) | |
1742 | return -1; | |
1743 | len = getpkt (own_buf); | |
1744 | if (len < 0) | |
1745 | return -1; | |
1746 | } | |
1747 | ||
1748 | if (own_buf[0] == 'E') | |
1749 | { | |
1750 | warning ("An error occurred while relocating an instruction: %s\n", | |
1751 | own_buf); | |
1752 | return -1; | |
1753 | } | |
1754 | ||
1755 | if (strncmp (own_buf, "qRelocInsn:", strlen ("qRelocInsn:")) != 0) | |
1756 | { | |
1757 | warning ("Malformed response to qRelocInsn, ignoring: %s\n", | |
1758 | own_buf); | |
1759 | return -1; | |
1760 | } | |
1761 | ||
1762 | unpack_varlen_hex (own_buf + strlen ("qRelocInsn:"), &written); | |
1763 | ||
1764 | *to += written; | |
1765 | return 0; | |
1766 | } | |
1767 | ||
c74d0ad8 | 1768 | void |
bce7165d | 1769 | monitor_output (const char *msg) |
c74d0ad8 | 1770 | { |
bca929d3 | 1771 | char *buf = xmalloc (strlen (msg) * 2 + 2); |
c74d0ad8 DJ |
1772 | |
1773 | buf[0] = 'O'; | |
1774 | hexify (buf + 1, msg, 0); | |
1775 | ||
1776 | putpkt (buf); | |
1777 | free (buf); | |
1778 | } | |
255e7678 | 1779 | |
0fb4aa4b | 1780 | #endif |