Commit | Line | Data |
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c906108c | 1 | /* Remote utility routines for the remote server for GDB. |
0b302171 | 2 | Copyright (C) 1986, 1989, 1993-2012 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" |
c906108c SS |
23 | #include <stdio.h> |
24 | #include <string.h> | |
b80864fb | 25 | #if HAVE_SYS_IOCTL_H |
c906108c | 26 | #include <sys/ioctl.h> |
b80864fb | 27 | #endif |
68070c10 | 28 | #if HAVE_SYS_FILE_H |
c906108c | 29 | #include <sys/file.h> |
68070c10 | 30 | #endif |
b80864fb | 31 | #if HAVE_NETINET_IN_H |
c906108c | 32 | #include <netinet/in.h> |
b80864fb DJ |
33 | #endif |
34 | #if HAVE_SYS_SOCKET_H | |
c906108c | 35 | #include <sys/socket.h> |
b80864fb DJ |
36 | #endif |
37 | #if HAVE_NETDB_H | |
c906108c | 38 | #include <netdb.h> |
b80864fb DJ |
39 | #endif |
40 | #if HAVE_NETINET_TCP_H | |
c906108c | 41 | #include <netinet/tcp.h> |
b80864fb DJ |
42 | #endif |
43 | #if HAVE_SYS_IOCTL_H | |
c906108c | 44 | #include <sys/ioctl.h> |
b80864fb | 45 | #endif |
68070c10 | 46 | #if HAVE_SIGNAL_H |
c906108c | 47 | #include <signal.h> |
68070c10 PA |
48 | #endif |
49 | #if HAVE_FCNTL_H | |
c906108c | 50 | #include <fcntl.h> |
68070c10 | 51 | #endif |
cf30a8e1 | 52 | #include <sys/time.h> |
68070c10 | 53 | #if HAVE_UNISTD_H |
cf30a8e1 | 54 | #include <unistd.h> |
68070c10 | 55 | #endif |
b80864fb | 56 | #if HAVE_ARPA_INET_H |
0729219d | 57 | #include <arpa/inet.h> |
b80864fb | 58 | #endif |
8264bb58 | 59 | #include <sys/stat.h> |
68070c10 | 60 | #if HAVE_ERRNO_H |
8264bb58 | 61 | #include <errno.h> |
68070c10 | 62 | #endif |
b80864fb DJ |
63 | |
64 | #if USE_WIN32API | |
12ea4b69 | 65 | #include <winsock2.h> |
b80864fb | 66 | #endif |
c906108c | 67 | |
ac8c974e AR |
68 | #if __QNX__ |
69 | #include <sys/iomgr.h> | |
70 | #endif /* __QNX__ */ | |
71 | ||
f450004a DJ |
72 | #ifndef HAVE_SOCKLEN_T |
73 | typedef int socklen_t; | |
74 | #endif | |
75 | ||
0fb4aa4b PA |
76 | #ifndef IN_PROCESS_AGENT |
77 | ||
7390519e PA |
78 | #if USE_WIN32API |
79 | # define INVALID_DESCRIPTOR INVALID_SOCKET | |
80 | #else | |
81 | # define INVALID_DESCRIPTOR -1 | |
82 | #endif | |
83 | ||
24b066ba DE |
84 | /* Extra value for readchar_callback. */ |
85 | enum { | |
86 | /* The callback is currently not scheduled. */ | |
87 | NOT_SCHEDULED = -1 | |
88 | }; | |
89 | ||
90 | /* Status of the readchar callback. | |
91 | Either NOT_SCHEDULED or the callback id. */ | |
92 | static int readchar_callback = NOT_SCHEDULED; | |
93 | ||
bc3b5632 | 94 | static int readchar (void); |
24b066ba DE |
95 | static void reset_readchar (void); |
96 | static void reschedule (void); | |
bc3b5632 | 97 | |
fd500816 DJ |
98 | /* A cache entry for a successfully looked-up symbol. */ |
99 | struct sym_cache | |
100 | { | |
95954743 | 101 | char *name; |
fd500816 DJ |
102 | CORE_ADDR addr; |
103 | struct sym_cache *next; | |
104 | }; | |
105 | ||
c906108c | 106 | int remote_debug = 0; |
03863182 | 107 | struct ui_file *gdb_stdlog; |
c906108c | 108 | |
e0f9f062 DE |
109 | static int remote_is_stdio = 0; |
110 | ||
ec48365d PA |
111 | static gdb_fildes_t remote_desc = INVALID_DESCRIPTOR; |
112 | static gdb_fildes_t listen_desc = INVALID_DESCRIPTOR; | |
c906108c | 113 | |
0d62e5e8 DJ |
114 | /* FIXME headerize? */ |
115 | extern int using_threads; | |
116 | extern int debug_threads; | |
117 | ||
a6f3e723 SL |
118 | /* If true, then GDB has requested noack mode. */ |
119 | int noack_mode = 0; | |
120 | /* If true, then we tell GDB to use noack mode by default. */ | |
121 | int transport_is_reliable = 0; | |
122 | ||
0f48aa01 | 123 | #ifdef USE_WIN32API |
68070c10 PA |
124 | # define read(fd, buf, len) recv (fd, (char *) buf, len, 0) |
125 | # define write(fd, buf, len) send (fd, (char *) buf, len, 0) | |
0f48aa01 DJ |
126 | #endif |
127 | ||
8336d594 PA |
128 | int |
129 | gdb_connected (void) | |
130 | { | |
131 | return remote_desc != INVALID_DESCRIPTOR; | |
132 | } | |
133 | ||
e0f9f062 DE |
134 | /* Return true if the remote connection is over stdio. */ |
135 | ||
136 | int | |
137 | remote_connection_is_stdio (void) | |
138 | { | |
139 | return remote_is_stdio; | |
140 | } | |
141 | ||
8336d594 PA |
142 | static void |
143 | enable_async_notification (int fd) | |
144 | { | |
145 | #if defined(F_SETFL) && defined (FASYNC) | |
146 | int save_fcntl_flags; | |
147 | ||
148 | save_fcntl_flags = fcntl (fd, F_GETFL, 0); | |
149 | fcntl (fd, F_SETFL, save_fcntl_flags | FASYNC); | |
150 | #if defined (F_SETOWN) | |
151 | fcntl (fd, F_SETOWN, getpid ()); | |
152 | #endif | |
153 | #endif | |
154 | } | |
155 | ||
156 | static int | |
157 | handle_accept_event (int err, gdb_client_data client_data) | |
158 | { | |
159 | struct sockaddr_in sockaddr; | |
160 | socklen_t tmp; | |
161 | ||
162 | if (debug_threads) | |
163 | fprintf (stderr, "handling possible accept event\n"); | |
164 | ||
165 | tmp = sizeof (sockaddr); | |
166 | remote_desc = accept (listen_desc, (struct sockaddr *) &sockaddr, &tmp); | |
167 | if (remote_desc == -1) | |
168 | perror_with_name ("Accept failed"); | |
169 | ||
170 | /* Enable TCP keep alive process. */ | |
171 | tmp = 1; | |
172 | setsockopt (remote_desc, SOL_SOCKET, SO_KEEPALIVE, | |
173 | (char *) &tmp, sizeof (tmp)); | |
174 | ||
175 | /* Tell TCP not to delay small packets. This greatly speeds up | |
176 | interactive response. */ | |
177 | tmp = 1; | |
178 | setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY, | |
179 | (char *) &tmp, sizeof (tmp)); | |
180 | ||
181 | #ifndef USE_WIN32API | |
8336d594 PA |
182 | signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply |
183 | exits when the remote side dies. */ | |
03f2bd59 JK |
184 | #endif |
185 | ||
186 | if (run_once) | |
187 | { | |
188 | #ifndef USE_WIN32API | |
189 | close (listen_desc); /* No longer need this */ | |
8336d594 | 190 | #else |
03f2bd59 | 191 | closesocket (listen_desc); /* No longer need this */ |
8336d594 | 192 | #endif |
03f2bd59 | 193 | } |
8336d594 | 194 | |
03f2bd59 JK |
195 | /* Even if !RUN_ONCE no longer notice new connections. Still keep the |
196 | descriptor open for add_file_handler to wait for a new connection. */ | |
8336d594 PA |
197 | delete_file_handler (listen_desc); |
198 | ||
199 | /* Convert IP address to string. */ | |
200 | fprintf (stderr, "Remote debugging from host %s\n", | |
201 | inet_ntoa (sockaddr.sin_addr)); | |
202 | ||
203 | enable_async_notification (remote_desc); | |
204 | ||
205 | /* Register the event loop handler. */ | |
206 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
207 | ||
208 | /* We have a new GDB connection now. If we were disconnected | |
209 | tracing, there's a window where the target could report a stop | |
210 | event to the event loop, and since we have a connection now, we'd | |
211 | try to send vStopped notifications to GDB. But, don't do that | |
212 | until GDB as selected all-stop/non-stop, and has queried the | |
213 | threads' status ('?'). */ | |
214 | target_async (0); | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
03f2bd59 JK |
219 | /* Prepare for a later connection to a remote debugger. |
220 | NAME is the filename used for communication. */ | |
221 | ||
222 | void | |
223 | remote_prepare (char *name) | |
224 | { | |
225 | char *port_str; | |
226 | #ifdef USE_WIN32API | |
227 | static int winsock_initialized; | |
228 | #endif | |
229 | int port; | |
230 | struct sockaddr_in sockaddr; | |
231 | socklen_t tmp; | |
232 | char *port_end; | |
233 | ||
e0f9f062 DE |
234 | remote_is_stdio = 0; |
235 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
236 | { | |
237 | /* We need to record fact that we're using stdio sooner than the | |
238 | call to remote_open so start_inferior knows the connection is | |
239 | via stdio. */ | |
240 | remote_is_stdio = 1; | |
241 | transport_is_reliable = 1; | |
242 | return; | |
243 | } | |
244 | ||
03f2bd59 JK |
245 | port_str = strchr (name, ':'); |
246 | if (port_str == NULL) | |
247 | { | |
248 | transport_is_reliable = 0; | |
249 | return; | |
250 | } | |
251 | ||
252 | port = strtoul (port_str + 1, &port_end, 10); | |
253 | if (port_str[1] == '\0' || *port_end != '\0') | |
254 | fatal ("Bad port argument: %s", name); | |
255 | ||
256 | #ifdef USE_WIN32API | |
257 | if (!winsock_initialized) | |
258 | { | |
259 | WSADATA wsad; | |
260 | ||
261 | WSAStartup (MAKEWORD (1, 0), &wsad); | |
262 | winsock_initialized = 1; | |
263 | } | |
264 | #endif | |
265 | ||
266 | listen_desc = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP); | |
267 | if (listen_desc == -1) | |
268 | perror_with_name ("Can't open socket"); | |
269 | ||
270 | /* Allow rapid reuse of this port. */ | |
271 | tmp = 1; | |
272 | setsockopt (listen_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, | |
273 | sizeof (tmp)); | |
274 | ||
275 | sockaddr.sin_family = PF_INET; | |
276 | sockaddr.sin_port = htons (port); | |
277 | sockaddr.sin_addr.s_addr = INADDR_ANY; | |
278 | ||
279 | if (bind (listen_desc, (struct sockaddr *) &sockaddr, sizeof (sockaddr)) | |
280 | || listen (listen_desc, 1)) | |
281 | perror_with_name ("Can't bind address"); | |
282 | ||
283 | transport_is_reliable = 1; | |
284 | } | |
285 | ||
c906108c SS |
286 | /* Open a connection to a remote debugger. |
287 | NAME is the filename used for communication. */ | |
288 | ||
289 | void | |
fba45db2 | 290 | remote_open (char *name) |
c906108c | 291 | { |
8264bb58 DJ |
292 | char *port_str; |
293 | ||
294 | port_str = strchr (name, ':'); | |
e0f9f062 | 295 | #ifdef USE_WIN32API |
8264bb58 | 296 | if (port_str == NULL) |
e0f9f062 DE |
297 | error ("Only <host>:<port> is supported on this platform."); |
298 | #endif | |
299 | ||
300 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
301 | { | |
302 | fprintf (stderr, "Remote debugging using stdio\n"); | |
303 | ||
304 | /* Use stdin as the handle of the connection. | |
305 | We only select on reads, for example. */ | |
306 | remote_desc = fileno (stdin); | |
307 | ||
308 | enable_async_notification (remote_desc); | |
309 | ||
310 | /* Register the event loop handler. */ | |
311 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
312 | } | |
313 | #ifndef USE_WIN32API | |
314 | else if (port_str == NULL) | |
c906108c | 315 | { |
8264bb58 DJ |
316 | struct stat statbuf; |
317 | ||
318 | if (stat (name, &statbuf) == 0 | |
319 | && (S_ISCHR (statbuf.st_mode) || S_ISFIFO (statbuf.st_mode))) | |
320 | remote_desc = open (name, O_RDWR); | |
321 | else | |
322 | { | |
323 | errno = EINVAL; | |
324 | remote_desc = -1; | |
325 | } | |
326 | ||
c906108c SS |
327 | if (remote_desc < 0) |
328 | perror_with_name ("Could not open remote device"); | |
329 | ||
330 | #ifdef HAVE_TERMIOS | |
331 | { | |
332 | struct termios termios; | |
c5aa993b | 333 | tcgetattr (remote_desc, &termios); |
c906108c SS |
334 | |
335 | termios.c_iflag = 0; | |
336 | termios.c_oflag = 0; | |
337 | termios.c_lflag = 0; | |
c5aa993b | 338 | termios.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 339 | termios.c_cflag |= CLOCAL | CS8; |
d0608e50 | 340 | termios.c_cc[VMIN] = 1; |
c906108c SS |
341 | termios.c_cc[VTIME] = 0; |
342 | ||
c5aa993b | 343 | tcsetattr (remote_desc, TCSANOW, &termios); |
c906108c SS |
344 | } |
345 | #endif | |
346 | ||
347 | #ifdef HAVE_TERMIO | |
348 | { | |
349 | struct termio termio; | |
350 | ioctl (remote_desc, TCGETA, &termio); | |
351 | ||
352 | termio.c_iflag = 0; | |
353 | termio.c_oflag = 0; | |
354 | termio.c_lflag = 0; | |
c5aa993b | 355 | termio.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 356 | termio.c_cflag |= CLOCAL | CS8; |
d0608e50 | 357 | termio.c_cc[VMIN] = 1; |
c906108c SS |
358 | termio.c_cc[VTIME] = 0; |
359 | ||
360 | ioctl (remote_desc, TCSETA, &termio); | |
361 | } | |
362 | #endif | |
363 | ||
364 | #ifdef HAVE_SGTTY | |
365 | { | |
366 | struct sgttyb sg; | |
367 | ||
368 | ioctl (remote_desc, TIOCGETP, &sg); | |
369 | sg.sg_flags = RAW; | |
370 | ioctl (remote_desc, TIOCSETP, &sg); | |
371 | } | |
372 | #endif | |
373 | ||
e641a1ca | 374 | fprintf (stderr, "Remote debugging using %s\n", name); |
a6f3e723 | 375 | |
8336d594 PA |
376 | enable_async_notification (remote_desc); |
377 | ||
378 | /* Register the event loop handler. */ | |
379 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
c906108c | 380 | } |
e0f9f062 | 381 | #endif /* USE_WIN32API */ |
c906108c SS |
382 | else |
383 | { | |
c906108c | 384 | int port; |
03f2bd59 | 385 | socklen_t len; |
c906108c | 386 | struct sockaddr_in sockaddr; |
c906108c | 387 | |
03f2bd59 JK |
388 | len = sizeof (sockaddr); |
389 | if (getsockname (listen_desc, | |
390 | (struct sockaddr *) &sockaddr, &len) < 0 | |
391 | || len < sizeof (sockaddr)) | |
392 | perror_with_name ("Can't determine port"); | |
393 | port = ntohs (sockaddr.sin_port); | |
6f8486da | 394 | |
6910d122 | 395 | fprintf (stderr, "Listening on port %d\n", port); |
b80864fb | 396 | fflush (stderr); |
6910d122 | 397 | |
8336d594 PA |
398 | /* Register the event loop handler. */ |
399 | add_file_handler (listen_desc, handle_accept_event, NULL); | |
c906108c | 400 | } |
c906108c SS |
401 | } |
402 | ||
403 | void | |
fba45db2 | 404 | remote_close (void) |
c906108c | 405 | { |
bd99dc85 PA |
406 | delete_file_handler (remote_desc); |
407 | ||
b80864fb DJ |
408 | #ifdef USE_WIN32API |
409 | closesocket (remote_desc); | |
410 | #else | |
e0f9f062 DE |
411 | if (! remote_connection_is_stdio ()) |
412 | close (remote_desc); | |
b80864fb | 413 | #endif |
8336d594 | 414 | remote_desc = INVALID_DESCRIPTOR; |
24b066ba DE |
415 | |
416 | reset_readchar (); | |
c906108c SS |
417 | } |
418 | ||
419 | /* Convert hex digit A to a number. */ | |
420 | ||
421 | static int | |
fba45db2 | 422 | fromhex (int a) |
c906108c SS |
423 | { |
424 | if (a >= '0' && a <= '9') | |
425 | return a - '0'; | |
426 | else if (a >= 'a' && a <= 'f') | |
427 | return a - 'a' + 10; | |
428 | else | |
429 | error ("Reply contains invalid hex digit"); | |
0a30fbc4 | 430 | return 0; |
c906108c SS |
431 | } |
432 | ||
0fb4aa4b PA |
433 | #endif |
434 | ||
95954743 PA |
435 | static const char hexchars[] = "0123456789abcdef"; |
436 | ||
437 | static int | |
438 | ishex (int ch, int *val) | |
439 | { | |
440 | if ((ch >= 'a') && (ch <= 'f')) | |
441 | { | |
442 | *val = ch - 'a' + 10; | |
443 | return 1; | |
444 | } | |
445 | if ((ch >= 'A') && (ch <= 'F')) | |
446 | { | |
447 | *val = ch - 'A' + 10; | |
448 | return 1; | |
449 | } | |
450 | if ((ch >= '0') && (ch <= '9')) | |
451 | { | |
452 | *val = ch - '0'; | |
453 | return 1; | |
454 | } | |
455 | return 0; | |
456 | } | |
457 | ||
0fb4aa4b PA |
458 | #ifndef IN_PROCESS_AGENT |
459 | ||
ce3a066d DJ |
460 | int |
461 | unhexify (char *bin, const char *hex, int count) | |
462 | { | |
463 | int i; | |
464 | ||
465 | for (i = 0; i < count; i++) | |
466 | { | |
467 | if (hex[0] == 0 || hex[1] == 0) | |
1b3f6016 PA |
468 | { |
469 | /* Hex string is short, or of uneven length. | |
470 | Return the count that has been converted so far. */ | |
471 | return i; | |
472 | } | |
ce3a066d DJ |
473 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); |
474 | hex += 2; | |
475 | } | |
476 | return i; | |
477 | } | |
478 | ||
dae5f5cf | 479 | void |
2f2893d9 DJ |
480 | decode_address (CORE_ADDR *addrp, const char *start, int len) |
481 | { | |
482 | CORE_ADDR addr; | |
483 | char ch; | |
484 | int i; | |
485 | ||
486 | addr = 0; | |
487 | for (i = 0; i < len; i++) | |
488 | { | |
489 | ch = start[i]; | |
490 | addr = addr << 4; | |
491 | addr = addr | (fromhex (ch) & 0x0f); | |
492 | } | |
493 | *addrp = addr; | |
494 | } | |
495 | ||
89be2091 DJ |
496 | const char * |
497 | decode_address_to_semicolon (CORE_ADDR *addrp, const char *start) | |
498 | { | |
499 | const char *end; | |
500 | ||
501 | end = start; | |
502 | while (*end != '\0' && *end != ';') | |
503 | end++; | |
504 | ||
505 | decode_address (addrp, start, end - start); | |
506 | ||
507 | if (*end == ';') | |
508 | end++; | |
509 | return end; | |
510 | } | |
511 | ||
0fb4aa4b PA |
512 | #endif |
513 | ||
c906108c SS |
514 | /* Convert number NIB to a hex digit. */ |
515 | ||
516 | static int | |
fba45db2 | 517 | tohex (int nib) |
c906108c SS |
518 | { |
519 | if (nib < 10) | |
520 | return '0' + nib; | |
521 | else | |
522 | return 'a' + nib - 10; | |
523 | } | |
524 | ||
0fb4aa4b PA |
525 | #ifndef IN_PROCESS_AGENT |
526 | ||
ce3a066d DJ |
527 | int |
528 | hexify (char *hex, const char *bin, int count) | |
529 | { | |
530 | int i; | |
531 | ||
532 | /* May use a length, or a nul-terminated string as input. */ | |
533 | if (count == 0) | |
534 | count = strlen (bin); | |
535 | ||
536 | for (i = 0; i < count; i++) | |
537 | { | |
538 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
539 | *hex++ = tohex (*bin++ & 0xf); | |
540 | } | |
541 | *hex = 0; | |
542 | return i; | |
543 | } | |
544 | ||
01f9e8fa DJ |
545 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
546 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
547 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
548 | (which may be more than *OUT_LEN due to escape characters). The | |
549 | total number of bytes in the output buffer will be at most | |
550 | OUT_MAXLEN. */ | |
551 | ||
552 | int | |
553 | remote_escape_output (const gdb_byte *buffer, int len, | |
554 | gdb_byte *out_buf, int *out_len, | |
555 | int out_maxlen) | |
556 | { | |
557 | int input_index, output_index; | |
558 | ||
559 | output_index = 0; | |
560 | for (input_index = 0; input_index < len; input_index++) | |
561 | { | |
562 | gdb_byte b = buffer[input_index]; | |
563 | ||
564 | if (b == '$' || b == '#' || b == '}' || b == '*') | |
565 | { | |
566 | /* These must be escaped. */ | |
567 | if (output_index + 2 > out_maxlen) | |
568 | break; | |
569 | out_buf[output_index++] = '}'; | |
570 | out_buf[output_index++] = b ^ 0x20; | |
571 | } | |
572 | else | |
573 | { | |
574 | if (output_index + 1 > out_maxlen) | |
575 | break; | |
576 | out_buf[output_index++] = b; | |
577 | } | |
578 | } | |
579 | ||
580 | *out_len = input_index; | |
581 | return output_index; | |
582 | } | |
583 | ||
584 | /* Convert BUFFER, escaped data LEN bytes long, into binary data | |
585 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
586 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
587 | ||
588 | This function reverses remote_escape_output. It allows more | |
589 | escaped characters than that function does, in particular because | |
590 | '*' must be escaped to avoid the run-length encoding processing | |
591 | in reading packets. */ | |
592 | ||
593 | static int | |
594 | remote_unescape_input (const gdb_byte *buffer, int len, | |
595 | gdb_byte *out_buf, int out_maxlen) | |
596 | { | |
597 | int input_index, output_index; | |
598 | int escaped; | |
599 | ||
600 | output_index = 0; | |
601 | escaped = 0; | |
602 | for (input_index = 0; input_index < len; input_index++) | |
603 | { | |
604 | gdb_byte b = buffer[input_index]; | |
605 | ||
606 | if (output_index + 1 > out_maxlen) | |
607 | error ("Received too much data from the target."); | |
608 | ||
609 | if (escaped) | |
610 | { | |
611 | out_buf[output_index++] = b ^ 0x20; | |
612 | escaped = 0; | |
613 | } | |
614 | else if (b == '}') | |
615 | escaped = 1; | |
616 | else | |
617 | out_buf[output_index++] = b; | |
618 | } | |
619 | ||
620 | if (escaped) | |
621 | error ("Unmatched escape character in target response."); | |
622 | ||
623 | return output_index; | |
624 | } | |
625 | ||
5ffff7c1 DJ |
626 | /* Look for a sequence of characters which can be run-length encoded. |
627 | If there are any, update *CSUM and *P. Otherwise, output the | |
628 | single character. Return the number of characters consumed. */ | |
629 | ||
630 | static int | |
631 | try_rle (char *buf, int remaining, unsigned char *csum, char **p) | |
632 | { | |
633 | int n; | |
634 | ||
635 | /* Always output the character. */ | |
636 | *csum += buf[0]; | |
637 | *(*p)++ = buf[0]; | |
638 | ||
639 | /* Don't go past '~'. */ | |
640 | if (remaining > 97) | |
641 | remaining = 97; | |
642 | ||
643 | for (n = 1; n < remaining; n++) | |
644 | if (buf[n] != buf[0]) | |
645 | break; | |
646 | ||
647 | /* N is the index of the first character not the same as buf[0]. | |
648 | buf[0] is counted twice, so by decrementing N, we get the number | |
649 | of characters the RLE sequence will replace. */ | |
650 | n--; | |
651 | ||
652 | if (n < 3) | |
653 | return 1; | |
654 | ||
655 | /* Skip the frame characters. The manual says to skip '+' and '-' | |
656 | also, but there's no reason to. Unfortunately these two unusable | |
657 | characters double the encoded length of a four byte zero | |
658 | value. */ | |
659 | while (n + 29 == '$' || n + 29 == '#') | |
660 | n--; | |
661 | ||
662 | *csum += '*'; | |
663 | *(*p)++ = '*'; | |
664 | *csum += n + 29; | |
665 | *(*p)++ = n + 29; | |
666 | ||
667 | return n + 1; | |
668 | } | |
669 | ||
0fb4aa4b PA |
670 | #endif |
671 | ||
95954743 PA |
672 | char * |
673 | unpack_varlen_hex (char *buff, /* packet to parse */ | |
674 | ULONGEST *result) | |
675 | { | |
676 | int nibble; | |
677 | ULONGEST retval = 0; | |
678 | ||
679 | while (ishex (*buff, &nibble)) | |
680 | { | |
681 | buff++; | |
682 | retval = retval << 4; | |
683 | retval |= nibble & 0x0f; | |
684 | } | |
685 | *result = retval; | |
686 | return buff; | |
687 | } | |
688 | ||
0fb4aa4b PA |
689 | #ifndef IN_PROCESS_AGENT |
690 | ||
95954743 PA |
691 | /* Write a PTID to BUF. Returns BUF+CHARACTERS_WRITTEN. */ |
692 | ||
693 | char * | |
694 | write_ptid (char *buf, ptid_t ptid) | |
695 | { | |
696 | int pid, tid; | |
697 | ||
698 | if (multi_process) | |
699 | { | |
700 | pid = ptid_get_pid (ptid); | |
701 | if (pid < 0) | |
702 | buf += sprintf (buf, "p-%x.", -pid); | |
703 | else | |
704 | buf += sprintf (buf, "p%x.", pid); | |
705 | } | |
706 | tid = ptid_get_lwp (ptid); | |
707 | if (tid < 0) | |
708 | buf += sprintf (buf, "-%x", -tid); | |
709 | else | |
710 | buf += sprintf (buf, "%x", tid); | |
711 | ||
712 | return buf; | |
713 | } | |
714 | ||
715 | ULONGEST | |
716 | hex_or_minus_one (char *buf, char **obuf) | |
717 | { | |
718 | ULONGEST ret; | |
719 | ||
720 | if (strncmp (buf, "-1", 2) == 0) | |
721 | { | |
722 | ret = (ULONGEST) -1; | |
723 | buf += 2; | |
724 | } | |
725 | else | |
726 | buf = unpack_varlen_hex (buf, &ret); | |
727 | ||
728 | if (obuf) | |
729 | *obuf = buf; | |
730 | ||
731 | return ret; | |
732 | } | |
733 | ||
734 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
735 | passed the last parsed char. Returns null_ptid on error. */ | |
736 | ptid_t | |
737 | read_ptid (char *buf, char **obuf) | |
738 | { | |
739 | char *p = buf; | |
740 | char *pp; | |
741 | ULONGEST pid = 0, tid = 0; | |
742 | ||
743 | if (*p == 'p') | |
744 | { | |
745 | /* Multi-process ptid. */ | |
746 | pp = unpack_varlen_hex (p + 1, &pid); | |
747 | if (*pp != '.') | |
748 | error ("invalid remote ptid: %s\n", p); | |
749 | ||
750 | p = pp + 1; | |
751 | ||
752 | tid = hex_or_minus_one (p, &pp); | |
753 | ||
754 | if (obuf) | |
755 | *obuf = pp; | |
756 | return ptid_build (pid, tid, 0); | |
757 | } | |
758 | ||
759 | /* No multi-process. Just a tid. */ | |
760 | tid = hex_or_minus_one (p, &pp); | |
761 | ||
762 | /* Since the stub is not sending a process id, then default to | |
763 | what's in the current inferior. */ | |
764 | pid = ptid_get_pid (((struct inferior_list_entry *) current_inferior)->id); | |
765 | ||
766 | if (obuf) | |
767 | *obuf = pp; | |
768 | return ptid_build (pid, tid, 0); | |
769 | } | |
770 | ||
e0f9f062 DE |
771 | /* Write COUNT bytes in BUF to the client. |
772 | The result is the number of bytes written or -1 if error. | |
773 | This may return less than COUNT. */ | |
774 | ||
775 | static int | |
776 | write_prim (const void *buf, int count) | |
777 | { | |
778 | if (remote_connection_is_stdio ()) | |
779 | return write (fileno (stdout), buf, count); | |
780 | else | |
781 | return write (remote_desc, buf, count); | |
782 | } | |
783 | ||
784 | /* Read COUNT bytes from the client and store in BUF. | |
785 | The result is the number of bytes read or -1 if error. | |
786 | This may return less than COUNT. */ | |
787 | ||
788 | static int | |
789 | read_prim (void *buf, int count) | |
790 | { | |
791 | if (remote_connection_is_stdio ()) | |
792 | return read (fileno (stdin), buf, count); | |
793 | else | |
794 | return read (remote_desc, buf, count); | |
795 | } | |
796 | ||
c906108c | 797 | /* Send a packet to the remote machine, with error checking. |
01f9e8fa DJ |
798 | The data of the packet is in BUF, and the length of the |
799 | packet is in CNT. Returns >= 0 on success, -1 otherwise. */ | |
c906108c | 800 | |
bd99dc85 PA |
801 | static int |
802 | putpkt_binary_1 (char *buf, int cnt, int is_notif) | |
c906108c SS |
803 | { |
804 | int i; | |
805 | unsigned char csum = 0; | |
0a30fbc4 | 806 | char *buf2; |
c906108c | 807 | char *p; |
bc3b5632 | 808 | int cc; |
c906108c | 809 | |
e6edda56 | 810 | buf2 = xmalloc (strlen ("$") + cnt + strlen ("#nn") + 1); |
0a30fbc4 | 811 | |
c906108c SS |
812 | /* Copy the packet into buffer BUF2, encapsulating it |
813 | and giving it a checksum. */ | |
814 | ||
815 | p = buf2; | |
bd99dc85 PA |
816 | if (is_notif) |
817 | *p++ = '%'; | |
818 | else | |
819 | *p++ = '$'; | |
c906108c | 820 | |
5ffff7c1 DJ |
821 | for (i = 0; i < cnt;) |
822 | i += try_rle (buf + i, cnt - i, &csum, &p); | |
823 | ||
c906108c SS |
824 | *p++ = '#'; |
825 | *p++ = tohex ((csum >> 4) & 0xf); | |
826 | *p++ = tohex (csum & 0xf); | |
827 | ||
828 | *p = '\0'; | |
829 | ||
830 | /* Send it over and over until we get a positive ack. */ | |
831 | ||
832 | do | |
833 | { | |
e0f9f062 | 834 | if (write_prim (buf2, p - buf2) != p - buf2) |
c906108c SS |
835 | { |
836 | perror ("putpkt(write)"); | |
f88c79e6 | 837 | free (buf2); |
c906108c SS |
838 | return -1; |
839 | } | |
840 | ||
bd99dc85 | 841 | if (noack_mode || is_notif) |
a6f3e723 SL |
842 | { |
843 | /* Don't expect an ack then. */ | |
844 | if (remote_debug) | |
845 | { | |
bd99dc85 PA |
846 | if (is_notif) |
847 | fprintf (stderr, "putpkt (\"%s\"); [notif]\n", buf2); | |
848 | else | |
849 | fprintf (stderr, "putpkt (\"%s\"); [noack mode]\n", buf2); | |
a6f3e723 SL |
850 | fflush (stderr); |
851 | } | |
852 | break; | |
853 | } | |
854 | ||
c906108c | 855 | if (remote_debug) |
0d62e5e8 DJ |
856 | { |
857 | fprintf (stderr, "putpkt (\"%s\"); [looking for ack]\n", buf2); | |
858 | fflush (stderr); | |
859 | } | |
0d62e5e8 | 860 | |
bc3b5632 | 861 | cc = readchar (); |
c906108c | 862 | |
bc3b5632 DE |
863 | if (cc < 0) |
864 | { | |
0a30fbc4 | 865 | free (buf2); |
c906108c SS |
866 | return -1; |
867 | } | |
0d62e5e8 | 868 | |
bc3b5632 DE |
869 | if (remote_debug) |
870 | { | |
871 | fprintf (stderr, "[received '%c' (0x%x)]\n", cc, cc); | |
872 | fflush (stderr); | |
873 | } | |
874 | ||
0d62e5e8 | 875 | /* Check for an input interrupt while we're here. */ |
bc3b5632 | 876 | if (cc == '\003' && current_inferior != NULL) |
ef57601b | 877 | (*the_target->request_interrupt) (); |
c906108c | 878 | } |
bc3b5632 | 879 | while (cc != '+'); |
c906108c | 880 | |
0a30fbc4 | 881 | free (buf2); |
c906108c SS |
882 | return 1; /* Success! */ |
883 | } | |
884 | ||
bd99dc85 PA |
885 | int |
886 | putpkt_binary (char *buf, int cnt) | |
887 | { | |
888 | return putpkt_binary_1 (buf, cnt, 0); | |
889 | } | |
890 | ||
01f9e8fa DJ |
891 | /* Send a packet to the remote machine, with error checking. The data |
892 | of the packet is in BUF, and the packet should be a NUL-terminated | |
893 | string. Returns >= 0 on success, -1 otherwise. */ | |
894 | ||
895 | int | |
896 | putpkt (char *buf) | |
897 | { | |
898 | return putpkt_binary (buf, strlen (buf)); | |
899 | } | |
900 | ||
bd99dc85 PA |
901 | int |
902 | putpkt_notif (char *buf) | |
903 | { | |
904 | return putpkt_binary_1 (buf, strlen (buf), 1); | |
905 | } | |
906 | ||
c906108c SS |
907 | /* Come here when we get an input interrupt from the remote side. This |
908 | interrupt should only be active while we are waiting for the child to do | |
bc3b5632 DE |
909 | something. Thus this assumes readchar:bufcnt is 0. |
910 | About the only thing that should come through is a ^C, which | |
ef57601b | 911 | will cause us to request child interruption. */ |
c906108c SS |
912 | |
913 | static void | |
0a30fbc4 | 914 | input_interrupt (int unused) |
c906108c | 915 | { |
cf30a8e1 C |
916 | fd_set readset; |
917 | struct timeval immediate = { 0, 0 }; | |
c906108c | 918 | |
cf30a8e1 C |
919 | /* Protect against spurious interrupts. This has been observed to |
920 | be a problem under NetBSD 1.4 and 1.5. */ | |
c906108c | 921 | |
cf30a8e1 C |
922 | FD_ZERO (&readset); |
923 | FD_SET (remote_desc, &readset); | |
924 | if (select (remote_desc + 1, &readset, 0, 0, &immediate) > 0) | |
c906108c | 925 | { |
cf30a8e1 | 926 | int cc; |
fd500816 | 927 | char c = 0; |
7390519e | 928 | |
e0f9f062 | 929 | cc = read_prim (&c, 1); |
c906108c | 930 | |
2d717e4f | 931 | if (cc != 1 || c != '\003' || current_inferior == NULL) |
cf30a8e1 | 932 | { |
fd500816 DJ |
933 | fprintf (stderr, "input_interrupt, count = %d c = %d ('%c')\n", |
934 | cc, c, c); | |
cf30a8e1 C |
935 | return; |
936 | } | |
7390519e | 937 | |
ef57601b | 938 | (*the_target->request_interrupt) (); |
cf30a8e1 | 939 | } |
c906108c | 940 | } |
7390519e PA |
941 | |
942 | /* Check if the remote side sent us an interrupt request (^C). */ | |
943 | void | |
944 | check_remote_input_interrupt_request (void) | |
945 | { | |
946 | /* This function may be called before establishing communications, | |
947 | therefore we need to validate the remote descriptor. */ | |
948 | ||
949 | if (remote_desc == INVALID_DESCRIPTOR) | |
950 | return; | |
951 | ||
952 | input_interrupt (0); | |
953 | } | |
b80864fb DJ |
954 | |
955 | /* Asynchronous I/O support. SIGIO must be enabled when waiting, in order to | |
956 | accept Control-C from the client, and must be disabled when talking to | |
957 | the client. */ | |
c906108c | 958 | |
a20d5e98 | 959 | static void |
62ea82f5 DJ |
960 | unblock_async_io (void) |
961 | { | |
b80864fb | 962 | #ifndef USE_WIN32API |
62ea82f5 | 963 | sigset_t sigio_set; |
a20d5e98 | 964 | |
62ea82f5 DJ |
965 | sigemptyset (&sigio_set); |
966 | sigaddset (&sigio_set, SIGIO); | |
967 | sigprocmask (SIG_UNBLOCK, &sigio_set, NULL); | |
b80864fb | 968 | #endif |
62ea82f5 DJ |
969 | } |
970 | ||
ac8c974e AR |
971 | #ifdef __QNX__ |
972 | static void | |
973 | nto_comctrl (int enable) | |
974 | { | |
975 | struct sigevent event; | |
976 | ||
977 | if (enable) | |
978 | { | |
979 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
980 | event.sigev_signo = SIGIO; | |
981 | event.sigev_code = 0; | |
982 | event.sigev_value.sival_ptr = NULL; | |
983 | event.sigev_priority = -1; | |
984 | ionotify (remote_desc, _NOTIFY_ACTION_POLLARM, _NOTIFY_COND_INPUT, | |
985 | &event); | |
986 | } | |
987 | else | |
988 | ionotify (remote_desc, _NOTIFY_ACTION_POLL, _NOTIFY_COND_INPUT, NULL); | |
989 | } | |
990 | #endif /* __QNX__ */ | |
991 | ||
992 | ||
fd500816 DJ |
993 | /* Current state of asynchronous I/O. */ |
994 | static int async_io_enabled; | |
995 | ||
996 | /* Enable asynchronous I/O. */ | |
c906108c | 997 | void |
fba45db2 | 998 | enable_async_io (void) |
c906108c | 999 | { |
fd500816 DJ |
1000 | if (async_io_enabled) |
1001 | return; | |
1002 | ||
b80864fb | 1003 | #ifndef USE_WIN32API |
c906108c | 1004 | signal (SIGIO, input_interrupt); |
b80864fb | 1005 | #endif |
fd500816 | 1006 | async_io_enabled = 1; |
ac8c974e AR |
1007 | #ifdef __QNX__ |
1008 | nto_comctrl (1); | |
1009 | #endif /* __QNX__ */ | |
c906108c SS |
1010 | } |
1011 | ||
fd500816 | 1012 | /* Disable asynchronous I/O. */ |
c906108c | 1013 | void |
fba45db2 | 1014 | disable_async_io (void) |
c906108c | 1015 | { |
fd500816 DJ |
1016 | if (!async_io_enabled) |
1017 | return; | |
1018 | ||
b80864fb | 1019 | #ifndef USE_WIN32API |
c906108c | 1020 | signal (SIGIO, SIG_IGN); |
b80864fb | 1021 | #endif |
fd500816 | 1022 | async_io_enabled = 0; |
ac8c974e AR |
1023 | #ifdef __QNX__ |
1024 | nto_comctrl (0); | |
1025 | #endif /* __QNX__ */ | |
1026 | ||
c906108c SS |
1027 | } |
1028 | ||
a20d5e98 DJ |
1029 | void |
1030 | initialize_async_io (void) | |
1031 | { | |
1032 | /* Make sure that async I/O starts disabled. */ | |
1033 | async_io_enabled = 1; | |
1034 | disable_async_io (); | |
1035 | ||
1036 | /* Make sure the signal is unblocked. */ | |
1037 | unblock_async_io (); | |
1038 | } | |
1039 | ||
24b066ba DE |
1040 | /* Internal buffer used by readchar. |
1041 | These are global to readchar because reschedule_remote needs to be | |
1042 | able to tell whether the buffer is empty. */ | |
1043 | ||
1044 | static unsigned char readchar_buf[BUFSIZ]; | |
1045 | static int readchar_bufcnt = 0; | |
1046 | static unsigned char *readchar_bufp; | |
1047 | ||
c906108c SS |
1048 | /* Returns next char from remote GDB. -1 if error. */ |
1049 | ||
1050 | static int | |
fba45db2 | 1051 | readchar (void) |
c906108c | 1052 | { |
24b066ba | 1053 | int ch; |
c906108c | 1054 | |
24b066ba DE |
1055 | if (readchar_bufcnt == 0) |
1056 | { | |
e0f9f062 | 1057 | readchar_bufcnt = read_prim (readchar_buf, sizeof (readchar_buf)); |
c906108c | 1058 | |
24b066ba DE |
1059 | if (readchar_bufcnt <= 0) |
1060 | { | |
1061 | if (readchar_bufcnt == 0) | |
1062 | fprintf (stderr, "readchar: Got EOF\n"); | |
1063 | else | |
1064 | perror ("readchar"); | |
c906108c | 1065 | |
24b066ba DE |
1066 | return -1; |
1067 | } | |
c906108c | 1068 | |
24b066ba | 1069 | readchar_bufp = readchar_buf; |
c906108c SS |
1070 | } |
1071 | ||
24b066ba DE |
1072 | readchar_bufcnt--; |
1073 | ch = *readchar_bufp++; | |
1074 | reschedule (); | |
1075 | return ch; | |
1076 | } | |
1077 | ||
1078 | /* Reset the readchar state machine. */ | |
1079 | ||
1080 | static void | |
1081 | reset_readchar (void) | |
1082 | { | |
1083 | readchar_bufcnt = 0; | |
1084 | if (readchar_callback != NOT_SCHEDULED) | |
1085 | { | |
1086 | delete_callback_event (readchar_callback); | |
1087 | readchar_callback = NOT_SCHEDULED; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | /* Process remaining data in readchar_buf. */ | |
1092 | ||
1093 | static int | |
1094 | process_remaining (void *context) | |
1095 | { | |
1096 | int res; | |
1097 | ||
1098 | /* This is a one-shot event. */ | |
1099 | readchar_callback = NOT_SCHEDULED; | |
1100 | ||
1101 | if (readchar_bufcnt > 0) | |
1102 | res = handle_serial_event (0, NULL); | |
1103 | else | |
1104 | res = 0; | |
1105 | ||
1106 | return res; | |
1107 | } | |
1108 | ||
1109 | /* If there is still data in the buffer, queue another event to process it, | |
1110 | we can't sleep in select yet. */ | |
1111 | ||
1112 | static void | |
1113 | reschedule (void) | |
1114 | { | |
1115 | if (readchar_bufcnt > 0 && readchar_callback == NOT_SCHEDULED) | |
1116 | readchar_callback = append_callback_event (process_remaining, NULL); | |
c906108c SS |
1117 | } |
1118 | ||
1119 | /* Read a packet from the remote machine, with error checking, | |
1120 | and store it in BUF. Returns length of packet, or negative if error. */ | |
1121 | ||
1122 | int | |
fba45db2 | 1123 | getpkt (char *buf) |
c906108c SS |
1124 | { |
1125 | char *bp; | |
1126 | unsigned char csum, c1, c2; | |
1127 | int c; | |
1128 | ||
1129 | while (1) | |
1130 | { | |
1131 | csum = 0; | |
1132 | ||
1133 | while (1) | |
1134 | { | |
1135 | c = readchar (); | |
1136 | if (c == '$') | |
1137 | break; | |
1138 | if (remote_debug) | |
0d62e5e8 DJ |
1139 | { |
1140 | fprintf (stderr, "[getpkt: discarding char '%c']\n", c); | |
1141 | fflush (stderr); | |
1142 | } | |
1143 | ||
c906108c SS |
1144 | if (c < 0) |
1145 | return -1; | |
1146 | } | |
1147 | ||
1148 | bp = buf; | |
1149 | while (1) | |
1150 | { | |
1151 | c = readchar (); | |
1152 | if (c < 0) | |
1153 | return -1; | |
1154 | if (c == '#') | |
1155 | break; | |
1156 | *bp++ = c; | |
1157 | csum += c; | |
1158 | } | |
1159 | *bp = 0; | |
1160 | ||
1161 | c1 = fromhex (readchar ()); | |
1162 | c2 = fromhex (readchar ()); | |
c5aa993b | 1163 | |
c906108c SS |
1164 | if (csum == (c1 << 4) + c2) |
1165 | break; | |
1166 | ||
a6f3e723 SL |
1167 | if (noack_mode) |
1168 | { | |
493e2a69 MS |
1169 | fprintf (stderr, |
1170 | "Bad checksum, sentsum=0x%x, csum=0x%x, " | |
1171 | "buf=%s [no-ack-mode, Bad medium?]\n", | |
a6f3e723 SL |
1172 | (c1 << 4) + c2, csum, buf); |
1173 | /* Not much we can do, GDB wasn't expecting an ack/nac. */ | |
1174 | break; | |
1175 | } | |
1176 | ||
c906108c SS |
1177 | fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n", |
1178 | (c1 << 4) + c2, csum, buf); | |
e0f9f062 | 1179 | if (write_prim ("-", 1) != 1) |
e581f2b4 | 1180 | return -1; |
c906108c SS |
1181 | } |
1182 | ||
a6f3e723 | 1183 | if (!noack_mode) |
0d62e5e8 | 1184 | { |
a6f3e723 SL |
1185 | if (remote_debug) |
1186 | { | |
1187 | fprintf (stderr, "getpkt (\"%s\"); [sending ack] \n", buf); | |
1188 | fflush (stderr); | |
1189 | } | |
c906108c | 1190 | |
e0f9f062 | 1191 | if (write_prim ("+", 1) != 1) |
e581f2b4 | 1192 | return -1; |
c906108c | 1193 | |
a6f3e723 SL |
1194 | if (remote_debug) |
1195 | { | |
1196 | fprintf (stderr, "[sent ack]\n"); | |
1197 | fflush (stderr); | |
1198 | } | |
0d62e5e8 | 1199 | } |
86b1f9c5 PM |
1200 | else |
1201 | { | |
1202 | if (remote_debug) | |
1203 | { | |
1204 | fprintf (stderr, "getpkt (\"%s\"); [no ack sent] \n", buf); | |
1205 | fflush (stderr); | |
1206 | } | |
1207 | } | |
0d62e5e8 | 1208 | |
c906108c SS |
1209 | return bp - buf; |
1210 | } | |
1211 | ||
1212 | void | |
fba45db2 | 1213 | write_ok (char *buf) |
c906108c SS |
1214 | { |
1215 | buf[0] = 'O'; | |
1216 | buf[1] = 'K'; | |
1217 | buf[2] = '\0'; | |
1218 | } | |
1219 | ||
1220 | void | |
fba45db2 | 1221 | write_enn (char *buf) |
c906108c | 1222 | { |
c89dc5d4 | 1223 | /* Some day, we should define the meanings of the error codes... */ |
c906108c | 1224 | buf[0] = 'E'; |
c89dc5d4 DJ |
1225 | buf[1] = '0'; |
1226 | buf[2] = '1'; | |
c906108c SS |
1227 | buf[3] = '\0'; |
1228 | } | |
1229 | ||
0fb4aa4b PA |
1230 | #endif |
1231 | ||
c906108c | 1232 | void |
fa593d66 | 1233 | convert_int_to_ascii (const unsigned char *from, char *to, int n) |
c906108c SS |
1234 | { |
1235 | int nib; | |
f450004a | 1236 | int ch; |
c906108c SS |
1237 | while (n--) |
1238 | { | |
1239 | ch = *from++; | |
1240 | nib = ((ch & 0xf0) >> 4) & 0x0f; | |
1241 | *to++ = tohex (nib); | |
1242 | nib = ch & 0x0f; | |
1243 | *to++ = tohex (nib); | |
1244 | } | |
1245 | *to++ = 0; | |
1246 | } | |
1247 | ||
0fb4aa4b | 1248 | #ifndef IN_PROCESS_AGENT |
c906108c SS |
1249 | |
1250 | void | |
fa593d66 | 1251 | convert_ascii_to_int (const char *from, unsigned char *to, int n) |
c906108c SS |
1252 | { |
1253 | int nib1, nib2; | |
1254 | while (n--) | |
1255 | { | |
1256 | nib1 = fromhex (*from++); | |
1257 | nib2 = fromhex (*from++); | |
1258 | *to++ = (((nib1 & 0x0f) << 4) & 0xf0) | (nib2 & 0x0f); | |
1259 | } | |
1260 | } | |
1261 | ||
1262 | static char * | |
442ea881 | 1263 | outreg (struct regcache *regcache, int regno, char *buf) |
c906108c | 1264 | { |
5c44784c JM |
1265 | if ((regno >> 12) != 0) |
1266 | *buf++ = tohex ((regno >> 12) & 0xf); | |
1267 | if ((regno >> 8) != 0) | |
1268 | *buf++ = tohex ((regno >> 8) & 0xf); | |
1269 | *buf++ = tohex ((regno >> 4) & 0xf); | |
c906108c SS |
1270 | *buf++ = tohex (regno & 0xf); |
1271 | *buf++ = ':'; | |
442ea881 | 1272 | collect_register_as_string (regcache, regno, buf); |
0d62e5e8 | 1273 | buf += 2 * register_size (regno); |
c906108c SS |
1274 | *buf++ = ';'; |
1275 | ||
1276 | return buf; | |
1277 | } | |
1278 | ||
0d62e5e8 DJ |
1279 | void |
1280 | new_thread_notify (int id) | |
1281 | { | |
1282 | char own_buf[256]; | |
1283 | ||
1284 | /* The `n' response is not yet part of the remote protocol. Do nothing. */ | |
1285 | if (1) | |
1286 | return; | |
1287 | ||
1288 | if (server_waiting == 0) | |
1289 | return; | |
1290 | ||
1291 | sprintf (own_buf, "n%x", id); | |
1292 | disable_async_io (); | |
1293 | putpkt (own_buf); | |
1294 | enable_async_io (); | |
1295 | } | |
1296 | ||
1297 | void | |
1298 | dead_thread_notify (int id) | |
1299 | { | |
1300 | char own_buf[256]; | |
1301 | ||
1302 | /* The `x' response is not yet part of the remote protocol. Do nothing. */ | |
1303 | if (1) | |
1304 | return; | |
1305 | ||
1306 | sprintf (own_buf, "x%x", id); | |
1307 | disable_async_io (); | |
1308 | putpkt (own_buf); | |
1309 | enable_async_io (); | |
1310 | } | |
1311 | ||
c906108c | 1312 | void |
95954743 | 1313 | prepare_resume_reply (char *buf, ptid_t ptid, |
5b1c542e | 1314 | struct target_waitstatus *status) |
c906108c | 1315 | { |
5b1c542e | 1316 | if (debug_threads) |
e77616d7 | 1317 | fprintf (stderr, "Writing resume reply for %s:%d\n", |
95954743 | 1318 | target_pid_to_str (ptid), status->kind); |
c906108c | 1319 | |
5b1c542e | 1320 | switch (status->kind) |
c906108c | 1321 | { |
5b1c542e PA |
1322 | case TARGET_WAITKIND_STOPPED: |
1323 | { | |
1324 | struct thread_info *saved_inferior; | |
1325 | const char **regp; | |
442ea881 | 1326 | struct regcache *regcache; |
e013ee27 | 1327 | |
5b1c542e PA |
1328 | sprintf (buf, "T%02x", status->value.sig); |
1329 | buf += strlen (buf); | |
e013ee27 | 1330 | |
5b1c542e | 1331 | regp = gdbserver_expedite_regs; |
e013ee27 | 1332 | |
5b1c542e | 1333 | saved_inferior = current_inferior; |
e013ee27 | 1334 | |
e09875d4 | 1335 | current_inferior = find_thread_ptid (ptid); |
e013ee27 | 1336 | |
442ea881 PA |
1337 | regcache = get_thread_regcache (current_inferior, 1); |
1338 | ||
5b1c542e PA |
1339 | if (the_target->stopped_by_watchpoint != NULL |
1340 | && (*the_target->stopped_by_watchpoint) ()) | |
1341 | { | |
1342 | CORE_ADDR addr; | |
1343 | int i; | |
c906108c | 1344 | |
5b1c542e PA |
1345 | strncpy (buf, "watch:", 6); |
1346 | buf += 6; | |
0d62e5e8 | 1347 | |
5b1c542e | 1348 | addr = (*the_target->stopped_data_address) (); |
255e7678 | 1349 | |
5b1c542e PA |
1350 | /* Convert each byte of the address into two hexadecimal |
1351 | chars. Note that we take sizeof (void *) instead of | |
1352 | sizeof (addr); this is to avoid sending a 64-bit | |
1353 | address to a 32-bit GDB. */ | |
1354 | for (i = sizeof (void *) * 2; i > 0; i--) | |
1355 | *buf++ = tohex ((addr >> (i - 1) * 4) & 0xf); | |
1356 | *buf++ = ';'; | |
1357 | } | |
1358 | ||
1359 | while (*regp) | |
1360 | { | |
442ea881 | 1361 | buf = outreg (regcache, find_regno (*regp), buf); |
5b1c542e PA |
1362 | regp ++; |
1363 | } | |
5472f405 | 1364 | *buf = '\0'; |
5b1c542e PA |
1365 | |
1366 | /* Formerly, if the debugger had not used any thread features | |
1367 | we would not burden it with a thread status response. This | |
1368 | was for the benefit of GDB 4.13 and older. However, in | |
1369 | recent GDB versions the check (``if (cont_thread != 0)'') | |
1370 | does not have the desired effect because of sillyness in | |
1371 | the way that the remote protocol handles specifying a | |
1372 | thread. Since thread support relies on qSymbol support | |
1373 | anyway, assume GDB can handle threads. */ | |
1374 | ||
1375 | if (using_threads && !disable_packet_Tthread) | |
1376 | { | |
1377 | /* This if (1) ought to be unnecessary. But remote_wait | |
1378 | in GDB will claim this event belongs to inferior_ptid | |
1379 | if we do not specify a thread, and there's no way for | |
1380 | gdbserver to know what inferior_ptid is. */ | |
95954743 | 1381 | if (1 || !ptid_equal (general_thread, ptid)) |
5b1c542e | 1382 | { |
dc146f7c | 1383 | int core = -1; |
bd99dc85 PA |
1384 | /* In non-stop, don't change the general thread behind |
1385 | GDB's back. */ | |
1386 | if (!non_stop) | |
1387 | general_thread = ptid; | |
95954743 PA |
1388 | sprintf (buf, "thread:"); |
1389 | buf += strlen (buf); | |
1390 | buf = write_ptid (buf, ptid); | |
1391 | strcat (buf, ";"); | |
5b1c542e | 1392 | buf += strlen (buf); |
dc146f7c | 1393 | |
3e10640f YQ |
1394 | core = target_core_of_thread (ptid); |
1395 | ||
dc146f7c VP |
1396 | if (core != -1) |
1397 | { | |
1398 | sprintf (buf, "core:"); | |
1399 | buf += strlen (buf); | |
1400 | sprintf (buf, "%x", core); | |
1401 | strcat (buf, ";"); | |
1402 | buf += strlen (buf); | |
1403 | } | |
5b1c542e PA |
1404 | } |
1405 | } | |
1406 | ||
1407 | if (dlls_changed) | |
1408 | { | |
1409 | strcpy (buf, "library:;"); | |
1410 | buf += strlen (buf); | |
1411 | dlls_changed = 0; | |
1412 | } | |
1413 | ||
1414 | current_inferior = saved_inferior; | |
1415 | } | |
1416 | break; | |
1417 | case TARGET_WAITKIND_EXITED: | |
95954743 PA |
1418 | if (multi_process) |
1419 | sprintf (buf, "W%x;process:%x", | |
1420 | status->value.integer, ptid_get_pid (ptid)); | |
1421 | else | |
1422 | sprintf (buf, "W%02x", status->value.integer); | |
5b1c542e PA |
1423 | break; |
1424 | case TARGET_WAITKIND_SIGNALLED: | |
95954743 PA |
1425 | if (multi_process) |
1426 | sprintf (buf, "X%x;process:%x", | |
1427 | status->value.sig, ptid_get_pid (ptid)); | |
1428 | else | |
1429 | sprintf (buf, "X%02x", status->value.sig); | |
5b1c542e PA |
1430 | break; |
1431 | default: | |
1432 | error ("unhandled waitkind"); | |
1433 | break; | |
c906108c | 1434 | } |
c906108c SS |
1435 | } |
1436 | ||
1437 | void | |
fba45db2 | 1438 | decode_m_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr) |
c906108c SS |
1439 | { |
1440 | int i = 0, j = 0; | |
1441 | char ch; | |
1442 | *mem_addr_ptr = *len_ptr = 0; | |
1443 | ||
1444 | while ((ch = from[i++]) != ',') | |
1445 | { | |
1446 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1447 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1448 | } | |
1449 | ||
1450 | for (j = 0; j < 4; j++) | |
1451 | { | |
1452 | if ((ch = from[i++]) == 0) | |
1453 | break; | |
1454 | *len_ptr = *len_ptr << 4; | |
1455 | *len_ptr |= fromhex (ch) & 0x0f; | |
1456 | } | |
1457 | } | |
1458 | ||
1459 | void | |
fba45db2 | 1460 | decode_M_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr, |
fa593d66 | 1461 | unsigned char **to_p) |
c906108c SS |
1462 | { |
1463 | int i = 0; | |
1464 | char ch; | |
1465 | *mem_addr_ptr = *len_ptr = 0; | |
1466 | ||
1467 | while ((ch = from[i++]) != ',') | |
1468 | { | |
1469 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1470 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1471 | } | |
1472 | ||
1473 | while ((ch = from[i++]) != ':') | |
1474 | { | |
1475 | *len_ptr = *len_ptr << 4; | |
1476 | *len_ptr |= fromhex (ch) & 0x0f; | |
1477 | } | |
1478 | ||
fa593d66 PA |
1479 | if (*to_p == NULL) |
1480 | *to_p = xmalloc (*len_ptr); | |
1481 | ||
1482 | convert_ascii_to_int (&from[i++], *to_p, *len_ptr); | |
c906108c | 1483 | } |
2f2893d9 | 1484 | |
01f9e8fa DJ |
1485 | int |
1486 | decode_X_packet (char *from, int packet_len, CORE_ADDR *mem_addr_ptr, | |
fa593d66 | 1487 | unsigned int *len_ptr, unsigned char **to_p) |
01f9e8fa DJ |
1488 | { |
1489 | int i = 0; | |
1490 | char ch; | |
1491 | *mem_addr_ptr = *len_ptr = 0; | |
1492 | ||
1493 | while ((ch = from[i++]) != ',') | |
1494 | { | |
1495 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1496 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1497 | } | |
1498 | ||
1499 | while ((ch = from[i++]) != ':') | |
1500 | { | |
1501 | *len_ptr = *len_ptr << 4; | |
1502 | *len_ptr |= fromhex (ch) & 0x0f; | |
1503 | } | |
1504 | ||
fa593d66 PA |
1505 | if (*to_p == NULL) |
1506 | *to_p = xmalloc (*len_ptr); | |
1507 | ||
01f9e8fa | 1508 | if (remote_unescape_input ((const gdb_byte *) &from[i], packet_len - i, |
fa593d66 | 1509 | *to_p, *len_ptr) != *len_ptr) |
01f9e8fa DJ |
1510 | return -1; |
1511 | ||
1512 | return 0; | |
1513 | } | |
1514 | ||
0e7f50da | 1515 | /* Decode a qXfer write request. */ |
d08aafef | 1516 | |
0e7f50da | 1517 | int |
d08aafef | 1518 | decode_xfer_write (char *buf, int packet_len, CORE_ADDR *offset, |
0e7f50da UW |
1519 | unsigned int *len, unsigned char *data) |
1520 | { | |
1521 | char ch; | |
d08aafef | 1522 | char *b = buf; |
0e7f50da UW |
1523 | |
1524 | /* Extract the offset. */ | |
1525 | *offset = 0; | |
1526 | while ((ch = *buf++) != ':') | |
1527 | { | |
1528 | *offset = *offset << 4; | |
1529 | *offset |= fromhex (ch) & 0x0f; | |
1530 | } | |
1531 | ||
1532 | /* Get encoded data. */ | |
d08aafef | 1533 | packet_len -= buf - b; |
0e7f50da UW |
1534 | *len = remote_unescape_input ((const gdb_byte *) buf, packet_len, |
1535 | data, packet_len); | |
1536 | return 0; | |
1537 | } | |
1538 | ||
08388c79 DE |
1539 | /* Decode the parameters of a qSearch:memory packet. */ |
1540 | ||
1541 | int | |
1542 | decode_search_memory_packet (const char *buf, int packet_len, | |
1543 | CORE_ADDR *start_addrp, | |
1544 | CORE_ADDR *search_space_lenp, | |
1545 | gdb_byte *pattern, unsigned int *pattern_lenp) | |
1546 | { | |
1547 | const char *p = buf; | |
1548 | ||
1549 | p = decode_address_to_semicolon (start_addrp, p); | |
1550 | p = decode_address_to_semicolon (search_space_lenp, p); | |
1551 | packet_len -= p - buf; | |
1552 | *pattern_lenp = remote_unescape_input ((const gdb_byte *) p, packet_len, | |
1553 | pattern, packet_len); | |
1554 | return 0; | |
1555 | } | |
1556 | ||
95954743 PA |
1557 | static void |
1558 | free_sym_cache (struct sym_cache *sym) | |
1559 | { | |
1560 | if (sym != NULL) | |
1561 | { | |
1562 | free (sym->name); | |
1563 | free (sym); | |
1564 | } | |
1565 | } | |
1566 | ||
1567 | void | |
1568 | clear_symbol_cache (struct sym_cache **symcache_p) | |
1569 | { | |
1570 | struct sym_cache *sym, *next; | |
1571 | ||
1572 | /* Check the cache first. */ | |
1573 | for (sym = *symcache_p; sym; sym = next) | |
1574 | { | |
1575 | next = sym->next; | |
1576 | free_sym_cache (sym); | |
1577 | } | |
1578 | ||
1579 | *symcache_p = NULL; | |
1580 | } | |
1581 | ||
9836d6ea PA |
1582 | /* Get the address of NAME, and return it in ADDRP if found. if |
1583 | MAY_ASK_GDB is false, assume symbol cache misses are failures. | |
fd500816 DJ |
1584 | Returns 1 if the symbol is found, 0 if it is not, -1 on error. */ |
1585 | ||
2f2893d9 | 1586 | int |
9836d6ea | 1587 | look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb) |
2f2893d9 DJ |
1588 | { |
1589 | char own_buf[266], *p, *q; | |
1590 | int len; | |
fd500816 | 1591 | struct sym_cache *sym; |
95954743 PA |
1592 | struct process_info *proc; |
1593 | ||
1594 | proc = current_process (); | |
fd500816 DJ |
1595 | |
1596 | /* Check the cache first. */ | |
95954743 | 1597 | for (sym = proc->symbol_cache; sym; sym = sym->next) |
fd500816 DJ |
1598 | if (strcmp (name, sym->name) == 0) |
1599 | { | |
1600 | *addrp = sym->addr; | |
1601 | return 1; | |
1602 | } | |
2f2893d9 | 1603 | |
9836d6ea PA |
1604 | /* It might not be an appropriate time to look up a symbol, |
1605 | e.g. while we're trying to fetch registers. */ | |
1606 | if (!may_ask_gdb) | |
ea025f5f DJ |
1607 | return 0; |
1608 | ||
2f2893d9 DJ |
1609 | /* Send the request. */ |
1610 | strcpy (own_buf, "qSymbol:"); | |
1611 | hexify (own_buf + strlen ("qSymbol:"), name, strlen (name)); | |
1612 | if (putpkt (own_buf) < 0) | |
1613 | return -1; | |
1614 | ||
1615 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
1616 | len = getpkt (own_buf); | |
1617 | if (len < 0) | |
1618 | return -1; | |
1619 | ||
2bbe3cc1 DJ |
1620 | /* We ought to handle pretty much any packet at this point while we |
1621 | wait for the qSymbol "response". That requires re-entering the | |
1622 | main loop. For now, this is an adequate approximation; allow | |
1623 | GDB to read from memory while it figures out the address of the | |
1624 | symbol. */ | |
1625 | while (own_buf[0] == 'm') | |
1626 | { | |
1627 | CORE_ADDR mem_addr; | |
1628 | unsigned char *mem_buf; | |
1629 | unsigned int mem_len; | |
1630 | ||
1631 | decode_m_packet (&own_buf[1], &mem_addr, &mem_len); | |
bca929d3 | 1632 | mem_buf = xmalloc (mem_len); |
2bbe3cc1 DJ |
1633 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) |
1634 | convert_int_to_ascii (mem_buf, own_buf, mem_len); | |
1635 | else | |
1636 | write_enn (own_buf); | |
1637 | free (mem_buf); | |
1638 | if (putpkt (own_buf) < 0) | |
1639 | return -1; | |
1640 | len = getpkt (own_buf); | |
1641 | if (len < 0) | |
1642 | return -1; | |
1643 | } | |
1b3f6016 | 1644 | |
2f2893d9 DJ |
1645 | if (strncmp (own_buf, "qSymbol:", strlen ("qSymbol:")) != 0) |
1646 | { | |
2bbe3cc1 | 1647 | warning ("Malformed response to qSymbol, ignoring: %s\n", own_buf); |
2f2893d9 DJ |
1648 | return -1; |
1649 | } | |
1650 | ||
1651 | p = own_buf + strlen ("qSymbol:"); | |
1652 | q = p; | |
1653 | while (*q && *q != ':') | |
1654 | q++; | |
1655 | ||
1656 | /* Make sure we found a value for the symbol. */ | |
1657 | if (p == q || *q == '\0') | |
1658 | return 0; | |
1659 | ||
1660 | decode_address (addrp, p, q - p); | |
fd500816 DJ |
1661 | |
1662 | /* Save the symbol in our cache. */ | |
bca929d3 DE |
1663 | sym = xmalloc (sizeof (*sym)); |
1664 | sym->name = xstrdup (name); | |
fd500816 | 1665 | sym->addr = *addrp; |
95954743 PA |
1666 | sym->next = proc->symbol_cache; |
1667 | proc->symbol_cache = sym; | |
fd500816 | 1668 | |
2f2893d9 DJ |
1669 | return 1; |
1670 | } | |
c74d0ad8 | 1671 | |
fa593d66 PA |
1672 | /* Relocate an instruction to execute at a different address. OLDLOC |
1673 | is the address in the inferior memory where the instruction to | |
1674 | relocate is currently at. On input, TO points to the destination | |
1675 | where we want the instruction to be copied (and possibly adjusted) | |
1676 | to. On output, it points to one past the end of the resulting | |
1677 | instruction(s). The effect of executing the instruction at TO | |
86a30030 | 1678 | shall be the same as if executing it at OLDLOC. For example, call |
fa593d66 PA |
1679 | instructions that implicitly push the return address on the stack |
1680 | should be adjusted to return to the instruction after OLDLOC; | |
1681 | relative branches, and other PC-relative instructions need the | |
1682 | offset adjusted; etc. Returns 0 on success, -1 on failure. */ | |
1683 | ||
1684 | int | |
1685 | relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc) | |
1686 | { | |
1687 | char own_buf[266]; | |
1688 | int len; | |
1689 | ULONGEST written = 0; | |
1690 | ||
1691 | /* Send the request. */ | |
1692 | strcpy (own_buf, "qRelocInsn:"); | |
1693 | sprintf (own_buf, "qRelocInsn:%s;%s", paddress (oldloc), | |
1694 | paddress (*to)); | |
1695 | if (putpkt (own_buf) < 0) | |
1696 | return -1; | |
1697 | ||
1698 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
1699 | len = getpkt (own_buf); | |
1700 | if (len < 0) | |
1701 | return -1; | |
1702 | ||
1703 | /* We ought to handle pretty much any packet at this point while we | |
1704 | wait for the qRelocInsn "response". That requires re-entering | |
1705 | the main loop. For now, this is an adequate approximation; allow | |
1706 | GDB to access memory. */ | |
1707 | while (own_buf[0] == 'm' || own_buf[0] == 'M' || own_buf[0] == 'X') | |
1708 | { | |
1709 | CORE_ADDR mem_addr; | |
1710 | unsigned char *mem_buf = NULL; | |
1711 | unsigned int mem_len; | |
1712 | ||
1713 | if (own_buf[0] == 'm') | |
1714 | { | |
1715 | decode_m_packet (&own_buf[1], &mem_addr, &mem_len); | |
1716 | mem_buf = xmalloc (mem_len); | |
1717 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) | |
1718 | convert_int_to_ascii (mem_buf, own_buf, mem_len); | |
1719 | else | |
1720 | write_enn (own_buf); | |
1721 | } | |
1722 | else if (own_buf[0] == 'X') | |
1723 | { | |
1724 | if (decode_X_packet (&own_buf[1], len - 1, &mem_addr, | |
1725 | &mem_len, &mem_buf) < 0 | |
1726 | || write_inferior_memory (mem_addr, mem_buf, mem_len) != 0) | |
1727 | write_enn (own_buf); | |
1728 | else | |
1729 | write_ok (own_buf); | |
1730 | } | |
1731 | else | |
1732 | { | |
1733 | decode_M_packet (&own_buf[1], &mem_addr, &mem_len, &mem_buf); | |
1734 | if (write_inferior_memory (mem_addr, mem_buf, mem_len) == 0) | |
1735 | write_ok (own_buf); | |
1736 | else | |
1737 | write_enn (own_buf); | |
1738 | } | |
1739 | free (mem_buf); | |
1740 | if (putpkt (own_buf) < 0) | |
1741 | return -1; | |
1742 | len = getpkt (own_buf); | |
1743 | if (len < 0) | |
1744 | return -1; | |
1745 | } | |
1746 | ||
1747 | if (own_buf[0] == 'E') | |
1748 | { | |
1749 | warning ("An error occurred while relocating an instruction: %s\n", | |
1750 | own_buf); | |
1751 | return -1; | |
1752 | } | |
1753 | ||
1754 | if (strncmp (own_buf, "qRelocInsn:", strlen ("qRelocInsn:")) != 0) | |
1755 | { | |
1756 | warning ("Malformed response to qRelocInsn, ignoring: %s\n", | |
1757 | own_buf); | |
1758 | return -1; | |
1759 | } | |
1760 | ||
1761 | unpack_varlen_hex (own_buf + strlen ("qRelocInsn:"), &written); | |
1762 | ||
1763 | *to += written; | |
1764 | return 0; | |
1765 | } | |
1766 | ||
c74d0ad8 | 1767 | void |
bce7165d | 1768 | monitor_output (const char *msg) |
c74d0ad8 | 1769 | { |
bca929d3 | 1770 | char *buf = xmalloc (strlen (msg) * 2 + 2); |
c74d0ad8 DJ |
1771 | |
1772 | buf[0] = 'O'; | |
1773 | hexify (buf + 1, msg, 0); | |
1774 | ||
1775 | putpkt (buf); | |
1776 | free (buf); | |
1777 | } | |
255e7678 | 1778 | |
0fb4aa4b | 1779 | #endif |