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