Commit | Line | Data |
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c906108c | 1 | /* Remote utility routines for the remote server for GDB. |
e2882c85 | 2 | Copyright (C) 1986-2018 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" | |
726e1356 PA |
20 | #if HAVE_TERMIOS_H |
21 | #include <termios.h> | |
22 | #endif | |
5b1c542e | 23 | #include "target.h" |
623b6bdf | 24 | #include "gdbthread.h" |
3aee8918 | 25 | #include "tdesc.h" |
799cdc37 | 26 | #include "dll.h" |
9c3d6531 | 27 | #include "rsp-low.h" |
75352e28 | 28 | #include "gdbthread.h" |
c7ab0aef SDJ |
29 | #include "netstuff.h" |
30 | #include "filestuff.h" | |
fafcc06a | 31 | #include <ctype.h> |
b80864fb | 32 | #if HAVE_SYS_IOCTL_H |
c906108c | 33 | #include <sys/ioctl.h> |
b80864fb | 34 | #endif |
68070c10 | 35 | #if HAVE_SYS_FILE_H |
c906108c | 36 | #include <sys/file.h> |
68070c10 | 37 | #endif |
9eb1356e PA |
38 | #if HAVE_NETINET_IN_H |
39 | #include <netinet/in.h> | |
40 | #endif | |
41 | #if HAVE_SYS_SOCKET_H | |
42 | #include <sys/socket.h> | |
43 | #endif | |
b80864fb | 44 | #if HAVE_NETDB_H |
c906108c | 45 | #include <netdb.h> |
b80864fb DJ |
46 | #endif |
47 | #if HAVE_NETINET_TCP_H | |
c906108c | 48 | #include <netinet/tcp.h> |
b80864fb DJ |
49 | #endif |
50 | #if HAVE_SYS_IOCTL_H | |
c906108c | 51 | #include <sys/ioctl.h> |
b80864fb | 52 | #endif |
68070c10 | 53 | #if HAVE_SIGNAL_H |
c906108c | 54 | #include <signal.h> |
68070c10 PA |
55 | #endif |
56 | #if HAVE_FCNTL_H | |
c906108c | 57 | #include <fcntl.h> |
68070c10 | 58 | #endif |
438e1e42 | 59 | #include "gdb_sys_time.h" |
cf30a8e1 | 60 | #include <unistd.h> |
b80864fb | 61 | #if HAVE_ARPA_INET_H |
0729219d | 62 | #include <arpa/inet.h> |
b80864fb | 63 | #endif |
53ce3c39 | 64 | #include <sys/stat.h> |
9eb1356e PA |
65 | |
66 | #if USE_WIN32API | |
67 | #include <winsock2.h> | |
c7ab0aef | 68 | #include <wspiapi.h> |
9eb1356e | 69 | #endif |
c906108c | 70 | |
ac8c974e AR |
71 | #if __QNX__ |
72 | #include <sys/iomgr.h> | |
73 | #endif /* __QNX__ */ | |
74 | ||
f450004a DJ |
75 | #ifndef HAVE_SOCKLEN_T |
76 | typedef int socklen_t; | |
77 | #endif | |
78 | ||
0fb4aa4b PA |
79 | #ifndef IN_PROCESS_AGENT |
80 | ||
7390519e PA |
81 | #if USE_WIN32API |
82 | # define INVALID_DESCRIPTOR INVALID_SOCKET | |
83 | #else | |
84 | # define INVALID_DESCRIPTOR -1 | |
85 | #endif | |
86 | ||
24b066ba DE |
87 | /* Extra value for readchar_callback. */ |
88 | enum { | |
89 | /* The callback is currently not scheduled. */ | |
90 | NOT_SCHEDULED = -1 | |
91 | }; | |
92 | ||
93 | /* Status of the readchar callback. | |
94 | Either NOT_SCHEDULED or the callback id. */ | |
95 | static int readchar_callback = NOT_SCHEDULED; | |
96 | ||
bc3b5632 | 97 | static int readchar (void); |
24b066ba DE |
98 | static void reset_readchar (void); |
99 | static void reschedule (void); | |
bc3b5632 | 100 | |
fd500816 DJ |
101 | /* A cache entry for a successfully looked-up symbol. */ |
102 | struct sym_cache | |
103 | { | |
95954743 | 104 | char *name; |
fd500816 DJ |
105 | CORE_ADDR addr; |
106 | struct sym_cache *next; | |
107 | }; | |
108 | ||
c906108c | 109 | int remote_debug = 0; |
03863182 | 110 | struct ui_file *gdb_stdlog; |
c906108c | 111 | |
e0f9f062 DE |
112 | static int remote_is_stdio = 0; |
113 | ||
ec48365d PA |
114 | static gdb_fildes_t remote_desc = INVALID_DESCRIPTOR; |
115 | static gdb_fildes_t listen_desc = INVALID_DESCRIPTOR; | |
c906108c | 116 | |
0d62e5e8 DJ |
117 | /* FIXME headerize? */ |
118 | extern int using_threads; | |
119 | extern int debug_threads; | |
120 | ||
0f48aa01 | 121 | #ifdef USE_WIN32API |
68070c10 PA |
122 | # define read(fd, buf, len) recv (fd, (char *) buf, len, 0) |
123 | # define write(fd, buf, len) send (fd, (char *) buf, len, 0) | |
0f48aa01 DJ |
124 | #endif |
125 | ||
8336d594 PA |
126 | int |
127 | gdb_connected (void) | |
128 | { | |
129 | return remote_desc != INVALID_DESCRIPTOR; | |
130 | } | |
131 | ||
e0f9f062 DE |
132 | /* Return true if the remote connection is over stdio. */ |
133 | ||
134 | int | |
135 | remote_connection_is_stdio (void) | |
136 | { | |
137 | return remote_is_stdio; | |
138 | } | |
139 | ||
8336d594 PA |
140 | static void |
141 | enable_async_notification (int fd) | |
142 | { | |
143 | #if defined(F_SETFL) && defined (FASYNC) | |
144 | int save_fcntl_flags; | |
145 | ||
146 | save_fcntl_flags = fcntl (fd, F_GETFL, 0); | |
147 | fcntl (fd, F_SETFL, save_fcntl_flags | FASYNC); | |
148 | #if defined (F_SETOWN) | |
149 | fcntl (fd, F_SETOWN, getpid ()); | |
150 | #endif | |
151 | #endif | |
152 | } | |
153 | ||
154 | static int | |
155 | handle_accept_event (int err, gdb_client_data client_data) | |
156 | { | |
c7ab0aef SDJ |
157 | struct sockaddr_storage sockaddr; |
158 | socklen_t len = sizeof (sockaddr); | |
8336d594 PA |
159 | |
160 | if (debug_threads) | |
87ce2a04 | 161 | debug_printf ("handling possible accept event\n"); |
8336d594 | 162 | |
c7ab0aef | 163 | remote_desc = accept (listen_desc, (struct sockaddr *) &sockaddr, &len); |
8336d594 PA |
164 | if (remote_desc == -1) |
165 | perror_with_name ("Accept failed"); | |
166 | ||
167 | /* Enable TCP keep alive process. */ | |
c7ab0aef | 168 | socklen_t tmp = 1; |
8336d594 PA |
169 | setsockopt (remote_desc, SOL_SOCKET, SO_KEEPALIVE, |
170 | (char *) &tmp, sizeof (tmp)); | |
171 | ||
172 | /* Tell TCP not to delay small packets. This greatly speeds up | |
173 | interactive response. */ | |
174 | tmp = 1; | |
175 | setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY, | |
176 | (char *) &tmp, sizeof (tmp)); | |
177 | ||
178 | #ifndef USE_WIN32API | |
8336d594 PA |
179 | signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply |
180 | exits when the remote side dies. */ | |
03f2bd59 JK |
181 | #endif |
182 | ||
183 | if (run_once) | |
184 | { | |
185 | #ifndef USE_WIN32API | |
186 | close (listen_desc); /* No longer need this */ | |
8336d594 | 187 | #else |
03f2bd59 | 188 | closesocket (listen_desc); /* No longer need this */ |
8336d594 | 189 | #endif |
03f2bd59 | 190 | } |
8336d594 | 191 | |
03f2bd59 JK |
192 | /* Even if !RUN_ONCE no longer notice new connections. Still keep the |
193 | descriptor open for add_file_handler to wait for a new connection. */ | |
8336d594 PA |
194 | delete_file_handler (listen_desc); |
195 | ||
196 | /* Convert IP address to string. */ | |
c7ab0aef SDJ |
197 | char orig_host[GDB_NI_MAX_ADDR], orig_port[GDB_NI_MAX_PORT]; |
198 | ||
199 | int r = getnameinfo ((struct sockaddr *) &sockaddr, len, | |
200 | orig_host, sizeof (orig_host), | |
201 | orig_port, sizeof (orig_port), | |
202 | NI_NUMERICHOST | NI_NUMERICSERV); | |
203 | ||
204 | if (r != 0) | |
205 | fprintf (stderr, _("Could not obtain remote address: %s\n"), | |
206 | gai_strerror (r)); | |
207 | else | |
208 | fprintf (stderr, _("Remote debugging from host %s, port %s\n"), | |
209 | orig_host, orig_port); | |
8336d594 PA |
210 | |
211 | enable_async_notification (remote_desc); | |
212 | ||
213 | /* Register the event loop handler. */ | |
214 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
215 | ||
216 | /* We have a new GDB connection now. If we were disconnected | |
217 | tracing, there's a window where the target could report a stop | |
218 | event to the event loop, and since we have a connection now, we'd | |
219 | try to send vStopped notifications to GDB. But, don't do that | |
220 | until GDB as selected all-stop/non-stop, and has queried the | |
221 | threads' status ('?'). */ | |
222 | target_async (0); | |
223 | ||
224 | return 0; | |
225 | } | |
226 | ||
03f2bd59 JK |
227 | /* Prepare for a later connection to a remote debugger. |
228 | NAME is the filename used for communication. */ | |
229 | ||
230 | void | |
fb32b4f7 | 231 | remote_prepare (const char *name) |
03f2bd59 | 232 | { |
c12a5089 | 233 | client_state &cs = get_client_state (); |
03f2bd59 JK |
234 | #ifdef USE_WIN32API |
235 | static int winsock_initialized; | |
236 | #endif | |
03f2bd59 | 237 | socklen_t tmp; |
03f2bd59 | 238 | |
e0f9f062 DE |
239 | remote_is_stdio = 0; |
240 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
241 | { | |
242 | /* We need to record fact that we're using stdio sooner than the | |
243 | call to remote_open so start_inferior knows the connection is | |
244 | via stdio. */ | |
245 | remote_is_stdio = 1; | |
c12a5089 | 246 | cs.transport_is_reliable = 1; |
e0f9f062 DE |
247 | return; |
248 | } | |
249 | ||
c7ab0aef SDJ |
250 | struct addrinfo hint; |
251 | struct addrinfo *ainfo; | |
252 | ||
253 | memset (&hint, 0, sizeof (hint)); | |
254 | /* Assume no prefix will be passed, therefore we should use | |
255 | AF_UNSPEC. */ | |
256 | hint.ai_family = AF_UNSPEC; | |
257 | hint.ai_socktype = SOCK_STREAM; | |
258 | hint.ai_protocol = IPPROTO_TCP; | |
259 | ||
260 | parsed_connection_spec parsed | |
261 | = parse_connection_spec_without_prefix (name, &hint); | |
262 | ||
263 | if (parsed.port_str.empty ()) | |
03f2bd59 | 264 | { |
c12a5089 | 265 | cs.transport_is_reliable = 0; |
03f2bd59 JK |
266 | return; |
267 | } | |
268 | ||
03f2bd59 JK |
269 | #ifdef USE_WIN32API |
270 | if (!winsock_initialized) | |
271 | { | |
272 | WSADATA wsad; | |
273 | ||
274 | WSAStartup (MAKEWORD (1, 0), &wsad); | |
275 | winsock_initialized = 1; | |
276 | } | |
277 | #endif | |
278 | ||
c7ab0aef SDJ |
279 | int r = getaddrinfo (parsed.host_str.c_str (), parsed.port_str.c_str (), |
280 | &hint, &ainfo); | |
281 | ||
282 | if (r != 0) | |
283 | error (_("%s: cannot resolve name: %s"), name, gai_strerror (r)); | |
284 | ||
285 | scoped_free_addrinfo freeaddrinfo (ainfo); | |
286 | ||
287 | struct addrinfo *iter; | |
288 | ||
289 | for (iter = ainfo; iter != NULL; iter = iter->ai_next) | |
290 | { | |
291 | listen_desc = gdb_socket_cloexec (iter->ai_family, iter->ai_socktype, | |
292 | iter->ai_protocol); | |
293 | ||
294 | if (listen_desc >= 0) | |
295 | break; | |
296 | } | |
297 | ||
298 | if (iter == NULL) | |
03f2bd59 JK |
299 | perror_with_name ("Can't open socket"); |
300 | ||
301 | /* Allow rapid reuse of this port. */ | |
302 | tmp = 1; | |
303 | setsockopt (listen_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, | |
304 | sizeof (tmp)); | |
305 | ||
c7ab0aef SDJ |
306 | switch (iter->ai_family) |
307 | { | |
308 | case AF_INET: | |
309 | ((struct sockaddr_in *) iter->ai_addr)->sin_addr.s_addr = INADDR_ANY; | |
310 | break; | |
311 | case AF_INET6: | |
312 | ((struct sockaddr_in6 *) iter->ai_addr)->sin6_addr = in6addr_any; | |
313 | break; | |
314 | default: | |
315 | internal_error (__FILE__, __LINE__, | |
316 | _("Invalid 'ai_family' %d\n"), iter->ai_family); | |
317 | } | |
03f2bd59 | 318 | |
c7ab0aef | 319 | if (bind (listen_desc, iter->ai_addr, iter->ai_addrlen) != 0) |
03f2bd59 JK |
320 | perror_with_name ("Can't bind address"); |
321 | ||
c7ab0aef SDJ |
322 | if (listen (listen_desc, 1) != 0) |
323 | perror_with_name ("Can't listen on socket"); | |
324 | ||
c12a5089 | 325 | cs.transport_is_reliable = 1; |
03f2bd59 JK |
326 | } |
327 | ||
c906108c SS |
328 | /* Open a connection to a remote debugger. |
329 | NAME is the filename used for communication. */ | |
330 | ||
331 | void | |
fb32b4f7 | 332 | remote_open (const char *name) |
c906108c | 333 | { |
fb32b4f7 | 334 | const char *port_str; |
8264bb58 DJ |
335 | |
336 | port_str = strchr (name, ':'); | |
e0f9f062 | 337 | #ifdef USE_WIN32API |
8264bb58 | 338 | if (port_str == NULL) |
e0f9f062 DE |
339 | error ("Only <host>:<port> is supported on this platform."); |
340 | #endif | |
341 | ||
342 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
343 | { | |
344 | fprintf (stderr, "Remote debugging using stdio\n"); | |
345 | ||
346 | /* Use stdin as the handle of the connection. | |
347 | We only select on reads, for example. */ | |
348 | remote_desc = fileno (stdin); | |
349 | ||
350 | enable_async_notification (remote_desc); | |
351 | ||
352 | /* Register the event loop handler. */ | |
353 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
354 | } | |
355 | #ifndef USE_WIN32API | |
356 | else if (port_str == NULL) | |
c906108c | 357 | { |
8264bb58 DJ |
358 | struct stat statbuf; |
359 | ||
360 | if (stat (name, &statbuf) == 0 | |
361 | && (S_ISCHR (statbuf.st_mode) || S_ISFIFO (statbuf.st_mode))) | |
362 | remote_desc = open (name, O_RDWR); | |
363 | else | |
364 | { | |
365 | errno = EINVAL; | |
366 | remote_desc = -1; | |
367 | } | |
368 | ||
c906108c SS |
369 | if (remote_desc < 0) |
370 | perror_with_name ("Could not open remote device"); | |
371 | ||
726e1356 | 372 | #if HAVE_TERMIOS_H |
c906108c SS |
373 | { |
374 | struct termios termios; | |
c5aa993b | 375 | tcgetattr (remote_desc, &termios); |
c906108c SS |
376 | |
377 | termios.c_iflag = 0; | |
378 | termios.c_oflag = 0; | |
379 | termios.c_lflag = 0; | |
c5aa993b | 380 | termios.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 381 | termios.c_cflag |= CLOCAL | CS8; |
d0608e50 | 382 | termios.c_cc[VMIN] = 1; |
c906108c SS |
383 | termios.c_cc[VTIME] = 0; |
384 | ||
c5aa993b | 385 | tcsetattr (remote_desc, TCSANOW, &termios); |
c906108c SS |
386 | } |
387 | #endif | |
388 | ||
e641a1ca | 389 | fprintf (stderr, "Remote debugging using %s\n", name); |
a6f3e723 | 390 | |
8336d594 PA |
391 | enable_async_notification (remote_desc); |
392 | ||
393 | /* Register the event loop handler. */ | |
394 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
c906108c | 395 | } |
e0f9f062 | 396 | #endif /* USE_WIN32API */ |
c906108c SS |
397 | else |
398 | { | |
c7ab0aef SDJ |
399 | char listen_port[GDB_NI_MAX_PORT]; |
400 | struct sockaddr_storage sockaddr; | |
401 | socklen_t len = sizeof (sockaddr); | |
402 | ||
403 | if (getsockname (listen_desc, (struct sockaddr *) &sockaddr, &len) < 0) | |
03f2bd59 | 404 | perror_with_name ("Can't determine port"); |
6f8486da | 405 | |
c7ab0aef SDJ |
406 | int r = getnameinfo ((struct sockaddr *) &sockaddr, len, |
407 | NULL, 0, | |
408 | listen_port, sizeof (listen_port), | |
409 | NI_NUMERICSERV); | |
410 | ||
411 | if (r != 0) | |
412 | fprintf (stderr, _("Can't obtain port where we are listening: %s"), | |
413 | gai_strerror (r)); | |
414 | else | |
415 | fprintf (stderr, _("Listening on port %s\n"), listen_port); | |
416 | ||
b80864fb | 417 | fflush (stderr); |
6910d122 | 418 | |
8336d594 PA |
419 | /* Register the event loop handler. */ |
420 | add_file_handler (listen_desc, handle_accept_event, NULL); | |
c906108c | 421 | } |
c906108c SS |
422 | } |
423 | ||
424 | void | |
fba45db2 | 425 | remote_close (void) |
c906108c | 426 | { |
bd99dc85 PA |
427 | delete_file_handler (remote_desc); |
428 | ||
e849ea89 | 429 | disable_async_io (); |
8b207339 | 430 | |
b80864fb DJ |
431 | #ifdef USE_WIN32API |
432 | closesocket (remote_desc); | |
433 | #else | |
e0f9f062 DE |
434 | if (! remote_connection_is_stdio ()) |
435 | close (remote_desc); | |
b80864fb | 436 | #endif |
8336d594 | 437 | remote_desc = INVALID_DESCRIPTOR; |
24b066ba DE |
438 | |
439 | reset_readchar (); | |
c906108c SS |
440 | } |
441 | ||
0fb4aa4b PA |
442 | #endif |
443 | ||
0fb4aa4b PA |
444 | #ifndef IN_PROCESS_AGENT |
445 | ||
dae5f5cf | 446 | void |
2f2893d9 DJ |
447 | decode_address (CORE_ADDR *addrp, const char *start, int len) |
448 | { | |
449 | CORE_ADDR addr; | |
450 | char ch; | |
451 | int i; | |
452 | ||
453 | addr = 0; | |
454 | for (i = 0; i < len; i++) | |
455 | { | |
456 | ch = start[i]; | |
457 | addr = addr << 4; | |
458 | addr = addr | (fromhex (ch) & 0x0f); | |
459 | } | |
460 | *addrp = addr; | |
461 | } | |
462 | ||
89be2091 DJ |
463 | const char * |
464 | decode_address_to_semicolon (CORE_ADDR *addrp, const char *start) | |
465 | { | |
466 | const char *end; | |
467 | ||
468 | end = start; | |
469 | while (*end != '\0' && *end != ';') | |
470 | end++; | |
471 | ||
472 | decode_address (addrp, start, end - start); | |
473 | ||
474 | if (*end == ';') | |
475 | end++; | |
476 | return end; | |
477 | } | |
478 | ||
0fb4aa4b PA |
479 | #endif |
480 | ||
0fb4aa4b PA |
481 | #ifndef IN_PROCESS_AGENT |
482 | ||
5ffff7c1 DJ |
483 | /* Look for a sequence of characters which can be run-length encoded. |
484 | If there are any, update *CSUM and *P. Otherwise, output the | |
485 | single character. Return the number of characters consumed. */ | |
486 | ||
487 | static int | |
488 | try_rle (char *buf, int remaining, unsigned char *csum, char **p) | |
489 | { | |
490 | int n; | |
491 | ||
492 | /* Always output the character. */ | |
493 | *csum += buf[0]; | |
494 | *(*p)++ = buf[0]; | |
495 | ||
496 | /* Don't go past '~'. */ | |
497 | if (remaining > 97) | |
498 | remaining = 97; | |
499 | ||
500 | for (n = 1; n < remaining; n++) | |
501 | if (buf[n] != buf[0]) | |
502 | break; | |
503 | ||
504 | /* N is the index of the first character not the same as buf[0]. | |
505 | buf[0] is counted twice, so by decrementing N, we get the number | |
506 | of characters the RLE sequence will replace. */ | |
507 | n--; | |
508 | ||
509 | if (n < 3) | |
510 | return 1; | |
511 | ||
512 | /* Skip the frame characters. The manual says to skip '+' and '-' | |
513 | also, but there's no reason to. Unfortunately these two unusable | |
514 | characters double the encoded length of a four byte zero | |
515 | value. */ | |
516 | while (n + 29 == '$' || n + 29 == '#') | |
517 | n--; | |
518 | ||
519 | *csum += '*'; | |
520 | *(*p)++ = '*'; | |
521 | *csum += n + 29; | |
522 | *(*p)++ = n + 29; | |
523 | ||
524 | return n + 1; | |
525 | } | |
526 | ||
0fb4aa4b PA |
527 | #endif |
528 | ||
0fb4aa4b PA |
529 | #ifndef IN_PROCESS_AGENT |
530 | ||
95954743 PA |
531 | /* Write a PTID to BUF. Returns BUF+CHARACTERS_WRITTEN. */ |
532 | ||
533 | char * | |
534 | write_ptid (char *buf, ptid_t ptid) | |
535 | { | |
c12a5089 | 536 | client_state &cs = get_client_state (); |
95954743 PA |
537 | int pid, tid; |
538 | ||
c12a5089 | 539 | if (cs.multi_process) |
95954743 | 540 | { |
e99b03dc | 541 | pid = ptid.pid (); |
95954743 PA |
542 | if (pid < 0) |
543 | buf += sprintf (buf, "p-%x.", -pid); | |
544 | else | |
545 | buf += sprintf (buf, "p%x.", pid); | |
546 | } | |
e38504b3 | 547 | tid = ptid.lwp (); |
95954743 PA |
548 | if (tid < 0) |
549 | buf += sprintf (buf, "-%x", -tid); | |
550 | else | |
551 | buf += sprintf (buf, "%x", tid); | |
552 | ||
553 | return buf; | |
554 | } | |
555 | ||
5b3da067 | 556 | static ULONGEST |
256642e8 | 557 | hex_or_minus_one (const char *buf, const char **obuf) |
95954743 PA |
558 | { |
559 | ULONGEST ret; | |
560 | ||
61012eef | 561 | if (startswith (buf, "-1")) |
95954743 PA |
562 | { |
563 | ret = (ULONGEST) -1; | |
564 | buf += 2; | |
565 | } | |
566 | else | |
567 | buf = unpack_varlen_hex (buf, &ret); | |
568 | ||
569 | if (obuf) | |
570 | *obuf = buf; | |
571 | ||
572 | return ret; | |
573 | } | |
574 | ||
575 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
576 | passed the last parsed char. Returns null_ptid on error. */ | |
577 | ptid_t | |
256642e8 | 578 | read_ptid (const char *buf, const char **obuf) |
95954743 | 579 | { |
256642e8 PA |
580 | const char *p = buf; |
581 | const char *pp; | |
95954743 PA |
582 | ULONGEST pid = 0, tid = 0; |
583 | ||
584 | if (*p == 'p') | |
585 | { | |
586 | /* Multi-process ptid. */ | |
587 | pp = unpack_varlen_hex (p + 1, &pid); | |
588 | if (*pp != '.') | |
589 | error ("invalid remote ptid: %s\n", p); | |
590 | ||
591 | p = pp + 1; | |
592 | ||
593 | tid = hex_or_minus_one (p, &pp); | |
594 | ||
595 | if (obuf) | |
596 | *obuf = pp; | |
fd79271b | 597 | return ptid_t (pid, tid, 0); |
95954743 PA |
598 | } |
599 | ||
600 | /* No multi-process. Just a tid. */ | |
601 | tid = hex_or_minus_one (p, &pp); | |
602 | ||
3d40fbb5 PA |
603 | /* Since GDB is not sending a process id (multi-process extensions |
604 | are off), then there's only one process. Default to the first in | |
605 | the list. */ | |
606 | pid = pid_of (get_first_process ()); | |
95954743 PA |
607 | |
608 | if (obuf) | |
609 | *obuf = pp; | |
fd79271b | 610 | return ptid_t (pid, tid, 0); |
95954743 PA |
611 | } |
612 | ||
e0f9f062 DE |
613 | /* Write COUNT bytes in BUF to the client. |
614 | The result is the number of bytes written or -1 if error. | |
615 | This may return less than COUNT. */ | |
616 | ||
617 | static int | |
618 | write_prim (const void *buf, int count) | |
619 | { | |
620 | if (remote_connection_is_stdio ()) | |
621 | return write (fileno (stdout), buf, count); | |
622 | else | |
623 | return write (remote_desc, buf, count); | |
624 | } | |
625 | ||
626 | /* Read COUNT bytes from the client and store in BUF. | |
627 | The result is the number of bytes read or -1 if error. | |
628 | This may return less than COUNT. */ | |
629 | ||
630 | static int | |
631 | read_prim (void *buf, int count) | |
632 | { | |
633 | if (remote_connection_is_stdio ()) | |
634 | return read (fileno (stdin), buf, count); | |
635 | else | |
636 | return read (remote_desc, buf, count); | |
637 | } | |
638 | ||
c906108c | 639 | /* Send a packet to the remote machine, with error checking. |
01f9e8fa DJ |
640 | The data of the packet is in BUF, and the length of the |
641 | packet is in CNT. Returns >= 0 on success, -1 otherwise. */ | |
c906108c | 642 | |
bd99dc85 PA |
643 | static int |
644 | putpkt_binary_1 (char *buf, int cnt, int is_notif) | |
c906108c | 645 | { |
c12a5089 | 646 | client_state &cs = get_client_state (); |
c906108c SS |
647 | int i; |
648 | unsigned char csum = 0; | |
0a30fbc4 | 649 | char *buf2; |
c906108c | 650 | char *p; |
bc3b5632 | 651 | int cc; |
c906108c | 652 | |
224c3ddb | 653 | buf2 = (char *) xmalloc (strlen ("$") + cnt + strlen ("#nn") + 1); |
0a30fbc4 | 654 | |
c906108c SS |
655 | /* Copy the packet into buffer BUF2, encapsulating it |
656 | and giving it a checksum. */ | |
657 | ||
658 | p = buf2; | |
bd99dc85 PA |
659 | if (is_notif) |
660 | *p++ = '%'; | |
661 | else | |
662 | *p++ = '$'; | |
c906108c | 663 | |
5ffff7c1 DJ |
664 | for (i = 0; i < cnt;) |
665 | i += try_rle (buf + i, cnt - i, &csum, &p); | |
666 | ||
c906108c SS |
667 | *p++ = '#'; |
668 | *p++ = tohex ((csum >> 4) & 0xf); | |
669 | *p++ = tohex (csum & 0xf); | |
670 | ||
671 | *p = '\0'; | |
672 | ||
673 | /* Send it over and over until we get a positive ack. */ | |
674 | ||
675 | do | |
676 | { | |
e0f9f062 | 677 | if (write_prim (buf2, p - buf2) != p - buf2) |
c906108c SS |
678 | { |
679 | perror ("putpkt(write)"); | |
f88c79e6 | 680 | free (buf2); |
c906108c SS |
681 | return -1; |
682 | } | |
683 | ||
c12a5089 | 684 | if (cs.noack_mode || is_notif) |
a6f3e723 SL |
685 | { |
686 | /* Don't expect an ack then. */ | |
687 | if (remote_debug) | |
688 | { | |
bd99dc85 | 689 | if (is_notif) |
4eefa7bc | 690 | debug_printf ("putpkt (\"%s\"); [notif]\n", buf2); |
bd99dc85 | 691 | else |
4eefa7bc PA |
692 | debug_printf ("putpkt (\"%s\"); [noack mode]\n", buf2); |
693 | debug_flush (); | |
a6f3e723 SL |
694 | } |
695 | break; | |
696 | } | |
697 | ||
c906108c | 698 | if (remote_debug) |
0d62e5e8 | 699 | { |
4eefa7bc PA |
700 | debug_printf ("putpkt (\"%s\"); [looking for ack]\n", buf2); |
701 | debug_flush (); | |
0d62e5e8 | 702 | } |
0d62e5e8 | 703 | |
bc3b5632 | 704 | cc = readchar (); |
c906108c | 705 | |
bc3b5632 DE |
706 | if (cc < 0) |
707 | { | |
0a30fbc4 | 708 | free (buf2); |
c906108c SS |
709 | return -1; |
710 | } | |
0d62e5e8 | 711 | |
bc3b5632 DE |
712 | if (remote_debug) |
713 | { | |
4eefa7bc PA |
714 | debug_printf ("[received '%c' (0x%x)]\n", cc, cc); |
715 | debug_flush (); | |
bc3b5632 DE |
716 | } |
717 | ||
0d62e5e8 | 718 | /* Check for an input interrupt while we're here. */ |
0bfdf32f | 719 | if (cc == '\003' && current_thread != NULL) |
ef57601b | 720 | (*the_target->request_interrupt) (); |
c906108c | 721 | } |
bc3b5632 | 722 | while (cc != '+'); |
c906108c | 723 | |
0a30fbc4 | 724 | free (buf2); |
c906108c SS |
725 | return 1; /* Success! */ |
726 | } | |
727 | ||
bd99dc85 PA |
728 | int |
729 | putpkt_binary (char *buf, int cnt) | |
730 | { | |
731 | return putpkt_binary_1 (buf, cnt, 0); | |
732 | } | |
733 | ||
01f9e8fa DJ |
734 | /* Send a packet to the remote machine, with error checking. The data |
735 | of the packet is in BUF, and the packet should be a NUL-terminated | |
736 | string. Returns >= 0 on success, -1 otherwise. */ | |
737 | ||
738 | int | |
739 | putpkt (char *buf) | |
740 | { | |
741 | return putpkt_binary (buf, strlen (buf)); | |
742 | } | |
743 | ||
bd99dc85 PA |
744 | int |
745 | putpkt_notif (char *buf) | |
746 | { | |
747 | return putpkt_binary_1 (buf, strlen (buf), 1); | |
748 | } | |
749 | ||
c906108c SS |
750 | /* Come here when we get an input interrupt from the remote side. This |
751 | interrupt should only be active while we are waiting for the child to do | |
bc3b5632 DE |
752 | something. Thus this assumes readchar:bufcnt is 0. |
753 | About the only thing that should come through is a ^C, which | |
ef57601b | 754 | will cause us to request child interruption. */ |
c906108c SS |
755 | |
756 | static void | |
0a30fbc4 | 757 | input_interrupt (int unused) |
c906108c | 758 | { |
cf30a8e1 C |
759 | fd_set readset; |
760 | struct timeval immediate = { 0, 0 }; | |
c906108c | 761 | |
cf30a8e1 C |
762 | /* Protect against spurious interrupts. This has been observed to |
763 | be a problem under NetBSD 1.4 and 1.5. */ | |
c906108c | 764 | |
cf30a8e1 C |
765 | FD_ZERO (&readset); |
766 | FD_SET (remote_desc, &readset); | |
767 | if (select (remote_desc + 1, &readset, 0, 0, &immediate) > 0) | |
c906108c | 768 | { |
cf30a8e1 | 769 | int cc; |
fd500816 | 770 | char c = 0; |
7390519e | 771 | |
e0f9f062 | 772 | cc = read_prim (&c, 1); |
c906108c | 773 | |
fafcc06a | 774 | if (cc == 0) |
cf30a8e1 | 775 | { |
fafcc06a SDJ |
776 | fprintf (stderr, "client connection closed\n"); |
777 | return; | |
778 | } | |
f0db101d | 779 | else if (cc != 1 || c != '\003') |
fafcc06a SDJ |
780 | { |
781 | fprintf (stderr, "input_interrupt, count = %d c = %d ", cc, c); | |
782 | if (isprint (c)) | |
783 | fprintf (stderr, "('%c')\n", c); | |
784 | else | |
785 | fprintf (stderr, "('\\x%02x')\n", c & 0xff); | |
cf30a8e1 C |
786 | return; |
787 | } | |
7390519e | 788 | |
ef57601b | 789 | (*the_target->request_interrupt) (); |
cf30a8e1 | 790 | } |
c906108c | 791 | } |
7390519e PA |
792 | |
793 | /* Check if the remote side sent us an interrupt request (^C). */ | |
794 | void | |
795 | check_remote_input_interrupt_request (void) | |
796 | { | |
797 | /* This function may be called before establishing communications, | |
798 | therefore we need to validate the remote descriptor. */ | |
799 | ||
800 | if (remote_desc == INVALID_DESCRIPTOR) | |
801 | return; | |
802 | ||
803 | input_interrupt (0); | |
804 | } | |
b80864fb | 805 | |
8b207339 YQ |
806 | /* Asynchronous I/O support. SIGIO must be unblocked when waiting, |
807 | in order to accept Control-C from the client, and must be blocked | |
808 | when talking to the client. */ | |
c906108c | 809 | |
a20d5e98 | 810 | static void |
8b207339 | 811 | block_unblock_async_io (int block) |
62ea82f5 | 812 | { |
b80864fb | 813 | #ifndef USE_WIN32API |
62ea82f5 | 814 | sigset_t sigio_set; |
a20d5e98 | 815 | |
62ea82f5 DJ |
816 | sigemptyset (&sigio_set); |
817 | sigaddset (&sigio_set, SIGIO); | |
8b207339 | 818 | sigprocmask (block ? SIG_BLOCK : SIG_UNBLOCK, &sigio_set, NULL); |
b80864fb | 819 | #endif |
62ea82f5 DJ |
820 | } |
821 | ||
ac8c974e AR |
822 | #ifdef __QNX__ |
823 | static void | |
824 | nto_comctrl (int enable) | |
825 | { | |
826 | struct sigevent event; | |
827 | ||
828 | if (enable) | |
829 | { | |
830 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
831 | event.sigev_signo = SIGIO; | |
832 | event.sigev_code = 0; | |
833 | event.sigev_value.sival_ptr = NULL; | |
834 | event.sigev_priority = -1; | |
835 | ionotify (remote_desc, _NOTIFY_ACTION_POLLARM, _NOTIFY_COND_INPUT, | |
836 | &event); | |
837 | } | |
838 | else | |
839 | ionotify (remote_desc, _NOTIFY_ACTION_POLL, _NOTIFY_COND_INPUT, NULL); | |
840 | } | |
841 | #endif /* __QNX__ */ | |
842 | ||
843 | ||
fd500816 DJ |
844 | /* Current state of asynchronous I/O. */ |
845 | static int async_io_enabled; | |
846 | ||
847 | /* Enable asynchronous I/O. */ | |
c906108c | 848 | void |
fba45db2 | 849 | enable_async_io (void) |
c906108c | 850 | { |
fd500816 DJ |
851 | if (async_io_enabled) |
852 | return; | |
853 | ||
8b207339 YQ |
854 | block_unblock_async_io (0); |
855 | ||
fd500816 | 856 | async_io_enabled = 1; |
ac8c974e AR |
857 | #ifdef __QNX__ |
858 | nto_comctrl (1); | |
859 | #endif /* __QNX__ */ | |
c906108c SS |
860 | } |
861 | ||
fd500816 | 862 | /* Disable asynchronous I/O. */ |
c906108c | 863 | void |
fba45db2 | 864 | disable_async_io (void) |
c906108c | 865 | { |
fd500816 DJ |
866 | if (!async_io_enabled) |
867 | return; | |
868 | ||
8b207339 YQ |
869 | block_unblock_async_io (1); |
870 | ||
fd500816 | 871 | async_io_enabled = 0; |
ac8c974e AR |
872 | #ifdef __QNX__ |
873 | nto_comctrl (0); | |
874 | #endif /* __QNX__ */ | |
875 | ||
c906108c SS |
876 | } |
877 | ||
a20d5e98 DJ |
878 | void |
879 | initialize_async_io (void) | |
880 | { | |
8b207339 | 881 | /* Make sure that async I/O starts blocked. */ |
a20d5e98 DJ |
882 | async_io_enabled = 1; |
883 | disable_async_io (); | |
884 | ||
8b207339 YQ |
885 | /* Install the signal handler. */ |
886 | #ifndef USE_WIN32API | |
887 | signal (SIGIO, input_interrupt); | |
888 | #endif | |
a20d5e98 DJ |
889 | } |
890 | ||
24b066ba DE |
891 | /* Internal buffer used by readchar. |
892 | These are global to readchar because reschedule_remote needs to be | |
893 | able to tell whether the buffer is empty. */ | |
894 | ||
895 | static unsigned char readchar_buf[BUFSIZ]; | |
896 | static int readchar_bufcnt = 0; | |
897 | static unsigned char *readchar_bufp; | |
898 | ||
c906108c SS |
899 | /* Returns next char from remote GDB. -1 if error. */ |
900 | ||
901 | static int | |
fba45db2 | 902 | readchar (void) |
c906108c | 903 | { |
24b066ba | 904 | int ch; |
c906108c | 905 | |
24b066ba DE |
906 | if (readchar_bufcnt == 0) |
907 | { | |
e0f9f062 | 908 | readchar_bufcnt = read_prim (readchar_buf, sizeof (readchar_buf)); |
c906108c | 909 | |
24b066ba DE |
910 | if (readchar_bufcnt <= 0) |
911 | { | |
912 | if (readchar_bufcnt == 0) | |
fddedbe6 PA |
913 | { |
914 | if (remote_debug) | |
4eefa7bc | 915 | debug_printf ("readchar: Got EOF\n"); |
fddedbe6 | 916 | } |
24b066ba DE |
917 | else |
918 | perror ("readchar"); | |
c906108c | 919 | |
24b066ba DE |
920 | return -1; |
921 | } | |
c906108c | 922 | |
24b066ba | 923 | readchar_bufp = readchar_buf; |
c906108c SS |
924 | } |
925 | ||
24b066ba DE |
926 | readchar_bufcnt--; |
927 | ch = *readchar_bufp++; | |
928 | reschedule (); | |
929 | return ch; | |
930 | } | |
931 | ||
932 | /* Reset the readchar state machine. */ | |
933 | ||
934 | static void | |
935 | reset_readchar (void) | |
936 | { | |
937 | readchar_bufcnt = 0; | |
938 | if (readchar_callback != NOT_SCHEDULED) | |
939 | { | |
940 | delete_callback_event (readchar_callback); | |
941 | readchar_callback = NOT_SCHEDULED; | |
942 | } | |
943 | } | |
944 | ||
945 | /* Process remaining data in readchar_buf. */ | |
946 | ||
947 | static int | |
948 | process_remaining (void *context) | |
949 | { | |
950 | int res; | |
951 | ||
952 | /* This is a one-shot event. */ | |
953 | readchar_callback = NOT_SCHEDULED; | |
954 | ||
955 | if (readchar_bufcnt > 0) | |
956 | res = handle_serial_event (0, NULL); | |
957 | else | |
958 | res = 0; | |
959 | ||
960 | return res; | |
961 | } | |
962 | ||
963 | /* If there is still data in the buffer, queue another event to process it, | |
964 | we can't sleep in select yet. */ | |
965 | ||
966 | static void | |
967 | reschedule (void) | |
968 | { | |
969 | if (readchar_bufcnt > 0 && readchar_callback == NOT_SCHEDULED) | |
970 | readchar_callback = append_callback_event (process_remaining, NULL); | |
c906108c SS |
971 | } |
972 | ||
973 | /* Read a packet from the remote machine, with error checking, | |
974 | and store it in BUF. Returns length of packet, or negative if error. */ | |
975 | ||
976 | int | |
fba45db2 | 977 | getpkt (char *buf) |
c906108c | 978 | { |
c12a5089 | 979 | client_state &cs = get_client_state (); |
c906108c SS |
980 | char *bp; |
981 | unsigned char csum, c1, c2; | |
982 | int c; | |
983 | ||
984 | while (1) | |
985 | { | |
986 | csum = 0; | |
987 | ||
988 | while (1) | |
989 | { | |
990 | c = readchar (); | |
5a0dd67a YQ |
991 | |
992 | /* The '\003' may appear before or after each packet, so | |
993 | check for an input interrupt. */ | |
994 | if (c == '\003') | |
995 | { | |
996 | (*the_target->request_interrupt) (); | |
997 | continue; | |
998 | } | |
999 | ||
c906108c SS |
1000 | if (c == '$') |
1001 | break; | |
1002 | if (remote_debug) | |
0d62e5e8 | 1003 | { |
4eefa7bc PA |
1004 | debug_printf ("[getpkt: discarding char '%c']\n", c); |
1005 | debug_flush (); | |
0d62e5e8 DJ |
1006 | } |
1007 | ||
c906108c SS |
1008 | if (c < 0) |
1009 | return -1; | |
1010 | } | |
1011 | ||
1012 | bp = buf; | |
1013 | while (1) | |
1014 | { | |
1015 | c = readchar (); | |
1016 | if (c < 0) | |
1017 | return -1; | |
1018 | if (c == '#') | |
1019 | break; | |
1020 | *bp++ = c; | |
1021 | csum += c; | |
1022 | } | |
1023 | *bp = 0; | |
1024 | ||
1025 | c1 = fromhex (readchar ()); | |
1026 | c2 = fromhex (readchar ()); | |
c5aa993b | 1027 | |
c906108c SS |
1028 | if (csum == (c1 << 4) + c2) |
1029 | break; | |
1030 | ||
c12a5089 | 1031 | if (cs.noack_mode) |
a6f3e723 | 1032 | { |
493e2a69 MS |
1033 | fprintf (stderr, |
1034 | "Bad checksum, sentsum=0x%x, csum=0x%x, " | |
1035 | "buf=%s [no-ack-mode, Bad medium?]\n", | |
a6f3e723 SL |
1036 | (c1 << 4) + c2, csum, buf); |
1037 | /* Not much we can do, GDB wasn't expecting an ack/nac. */ | |
1038 | break; | |
1039 | } | |
1040 | ||
c906108c SS |
1041 | fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n", |
1042 | (c1 << 4) + c2, csum, buf); | |
e0f9f062 | 1043 | if (write_prim ("-", 1) != 1) |
e581f2b4 | 1044 | return -1; |
c906108c SS |
1045 | } |
1046 | ||
c12a5089 | 1047 | if (!cs.noack_mode) |
0d62e5e8 | 1048 | { |
a6f3e723 SL |
1049 | if (remote_debug) |
1050 | { | |
4eefa7bc PA |
1051 | debug_printf ("getpkt (\"%s\"); [sending ack] \n", buf); |
1052 | debug_flush (); | |
a6f3e723 | 1053 | } |
c906108c | 1054 | |
e0f9f062 | 1055 | if (write_prim ("+", 1) != 1) |
e581f2b4 | 1056 | return -1; |
c906108c | 1057 | |
a6f3e723 SL |
1058 | if (remote_debug) |
1059 | { | |
4eefa7bc PA |
1060 | debug_printf ("[sent ack]\n"); |
1061 | debug_flush (); | |
a6f3e723 | 1062 | } |
0d62e5e8 | 1063 | } |
86b1f9c5 PM |
1064 | else |
1065 | { | |
1066 | if (remote_debug) | |
1067 | { | |
4eefa7bc PA |
1068 | debug_printf ("getpkt (\"%s\"); [no ack sent] \n", buf); |
1069 | debug_flush (); | |
86b1f9c5 PM |
1070 | } |
1071 | } | |
0d62e5e8 | 1072 | |
18879fef YQ |
1073 | /* The readchar above may have already read a '\003' out of the socket |
1074 | and moved it to the local buffer. For example, when GDB sends | |
1075 | vCont;c immediately followed by interrupt (see | |
1076 | gdb.base/interrupt-noterm.exp). As soon as we see the vCont;c, we'll | |
1077 | resume the inferior and wait. Since we've already moved the '\003' | |
1078 | to the local buffer, SIGIO won't help. In that case, if we don't | |
1079 | check for interrupt after the vCont;c packet, the interrupt character | |
1080 | would stay in the buffer unattended until after the next (unrelated) | |
1081 | stop. */ | |
1082 | while (readchar_bufcnt > 0 && *readchar_bufp == '\003') | |
1083 | { | |
1084 | /* Consume the interrupt character in the buffer. */ | |
1085 | readchar (); | |
1086 | (*the_target->request_interrupt) (); | |
1087 | } | |
1088 | ||
c906108c SS |
1089 | return bp - buf; |
1090 | } | |
1091 | ||
1092 | void | |
fba45db2 | 1093 | write_ok (char *buf) |
c906108c SS |
1094 | { |
1095 | buf[0] = 'O'; | |
1096 | buf[1] = 'K'; | |
1097 | buf[2] = '\0'; | |
1098 | } | |
1099 | ||
1100 | void | |
fba45db2 | 1101 | write_enn (char *buf) |
c906108c | 1102 | { |
c89dc5d4 | 1103 | /* Some day, we should define the meanings of the error codes... */ |
c906108c | 1104 | buf[0] = 'E'; |
c89dc5d4 DJ |
1105 | buf[1] = '0'; |
1106 | buf[2] = '1'; | |
c906108c SS |
1107 | buf[3] = '\0'; |
1108 | } | |
1109 | ||
0fb4aa4b PA |
1110 | #endif |
1111 | ||
0fb4aa4b | 1112 | #ifndef IN_PROCESS_AGENT |
c906108c | 1113 | |
c906108c | 1114 | static char * |
442ea881 | 1115 | outreg (struct regcache *regcache, int regno, char *buf) |
c906108c | 1116 | { |
5c44784c JM |
1117 | if ((regno >> 12) != 0) |
1118 | *buf++ = tohex ((regno >> 12) & 0xf); | |
1119 | if ((regno >> 8) != 0) | |
1120 | *buf++ = tohex ((regno >> 8) & 0xf); | |
1121 | *buf++ = tohex ((regno >> 4) & 0xf); | |
c906108c SS |
1122 | *buf++ = tohex (regno & 0xf); |
1123 | *buf++ = ':'; | |
442ea881 | 1124 | collect_register_as_string (regcache, regno, buf); |
3aee8918 | 1125 | buf += 2 * register_size (regcache->tdesc, regno); |
c906108c SS |
1126 | *buf++ = ';'; |
1127 | ||
1128 | return buf; | |
1129 | } | |
1130 | ||
1131 | void | |
95954743 | 1132 | prepare_resume_reply (char *buf, ptid_t ptid, |
5b1c542e | 1133 | struct target_waitstatus *status) |
c906108c | 1134 | { |
c12a5089 | 1135 | client_state &cs = get_client_state (); |
5b1c542e | 1136 | if (debug_threads) |
87ce2a04 DE |
1137 | debug_printf ("Writing resume reply for %s:%d\n", |
1138 | target_pid_to_str (ptid), status->kind); | |
c906108c | 1139 | |
5b1c542e | 1140 | switch (status->kind) |
c906108c | 1141 | { |
5b1c542e | 1142 | case TARGET_WAITKIND_STOPPED: |
de0d863e | 1143 | case TARGET_WAITKIND_FORKED: |
c269dbdb | 1144 | case TARGET_WAITKIND_VFORKED: |
8228463c | 1145 | case TARGET_WAITKIND_VFORK_DONE: |
94585166 | 1146 | case TARGET_WAITKIND_EXECD: |
65706a29 | 1147 | case TARGET_WAITKIND_THREAD_CREATED: |
82075af2 JS |
1148 | case TARGET_WAITKIND_SYSCALL_ENTRY: |
1149 | case TARGET_WAITKIND_SYSCALL_RETURN: | |
5b1c542e | 1150 | { |
0bfdf32f | 1151 | struct thread_info *saved_thread; |
5b1c542e | 1152 | const char **regp; |
442ea881 | 1153 | struct regcache *regcache; |
e013ee27 | 1154 | |
c12a5089 SC |
1155 | if ((status->kind == TARGET_WAITKIND_FORKED && cs.report_fork_events) |
1156 | || (status->kind == TARGET_WAITKIND_VFORKED | |
1157 | && cs.report_vfork_events)) | |
de0d863e DB |
1158 | { |
1159 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
c269dbdb DB |
1160 | const char *event = (status->kind == TARGET_WAITKIND_FORKED |
1161 | ? "fork" : "vfork"); | |
de0d863e | 1162 | |
c269dbdb | 1163 | sprintf (buf, "T%02x%s:", signal, event); |
de0d863e DB |
1164 | buf += strlen (buf); |
1165 | buf = write_ptid (buf, status->value.related_pid); | |
1166 | strcat (buf, ";"); | |
1167 | } | |
c12a5089 SC |
1168 | else if (status->kind == TARGET_WAITKIND_VFORK_DONE |
1169 | && cs.report_vfork_events) | |
8228463c PA |
1170 | { |
1171 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1172 | ||
1173 | sprintf (buf, "T%02xvforkdone:;", signal); | |
1174 | } | |
c12a5089 | 1175 | else if (status->kind == TARGET_WAITKIND_EXECD && cs.report_exec_events) |
94585166 DB |
1176 | { |
1177 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1178 | const char *event = "exec"; | |
1179 | char hexified_pathname[PATH_MAX * 2]; | |
1180 | ||
1181 | sprintf (buf, "T%02x%s:", signal, event); | |
1182 | buf += strlen (buf); | |
1183 | ||
1184 | /* Encode pathname to hexified format. */ | |
1185 | bin2hex ((const gdb_byte *) status->value.execd_pathname, | |
1186 | hexified_pathname, | |
1187 | strlen (status->value.execd_pathname)); | |
1188 | ||
1189 | sprintf (buf, "%s;", hexified_pathname); | |
1190 | xfree (status->value.execd_pathname); | |
1191 | status->value.execd_pathname = NULL; | |
1192 | buf += strlen (buf); | |
1193 | } | |
65706a29 | 1194 | else if (status->kind == TARGET_WAITKIND_THREAD_CREATED |
c12a5089 | 1195 | && cs.report_thread_events) |
65706a29 PA |
1196 | { |
1197 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1198 | ||
1199 | sprintf (buf, "T%02xcreate:;", signal); | |
1200 | } | |
82075af2 JS |
1201 | else if (status->kind == TARGET_WAITKIND_SYSCALL_ENTRY |
1202 | || status->kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
1203 | { | |
1204 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1205 | const char *event = (status->kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
1206 | ? "syscall_entry" : "syscall_return"); | |
1207 | ||
1208 | sprintf (buf, "T%02x%s:%x;", signal, event, | |
1209 | status->value.syscall_number); | |
1210 | } | |
de0d863e DB |
1211 | else |
1212 | sprintf (buf, "T%02x", status->value.sig); | |
1213 | ||
5b1c542e | 1214 | buf += strlen (buf); |
e013ee27 | 1215 | |
0bfdf32f | 1216 | saved_thread = current_thread; |
e013ee27 | 1217 | |
75352e28 | 1218 | switch_to_thread (ptid); |
e013ee27 | 1219 | |
3aee8918 PA |
1220 | regp = current_target_desc ()->expedite_regs; |
1221 | ||
0bfdf32f | 1222 | regcache = get_thread_regcache (current_thread, 1); |
442ea881 | 1223 | |
5b1c542e PA |
1224 | if (the_target->stopped_by_watchpoint != NULL |
1225 | && (*the_target->stopped_by_watchpoint) ()) | |
1226 | { | |
1227 | CORE_ADDR addr; | |
1228 | int i; | |
c906108c | 1229 | |
29f9a567 | 1230 | memcpy (buf, "watch:", 6); |
5b1c542e | 1231 | buf += 6; |
0d62e5e8 | 1232 | |
5b1c542e | 1233 | addr = (*the_target->stopped_data_address) (); |
255e7678 | 1234 | |
5b1c542e PA |
1235 | /* Convert each byte of the address into two hexadecimal |
1236 | chars. Note that we take sizeof (void *) instead of | |
1237 | sizeof (addr); this is to avoid sending a 64-bit | |
1238 | address to a 32-bit GDB. */ | |
1239 | for (i = sizeof (void *) * 2; i > 0; i--) | |
1240 | *buf++ = tohex ((addr >> (i - 1) * 4) & 0xf); | |
1241 | *buf++ = ';'; | |
1242 | } | |
c12a5089 | 1243 | else if (cs.swbreak_feature && target_stopped_by_sw_breakpoint ()) |
1ec68e26 PA |
1244 | { |
1245 | sprintf (buf, "swbreak:;"); | |
1246 | buf += strlen (buf); | |
1247 | } | |
c12a5089 | 1248 | else if (cs.hwbreak_feature && target_stopped_by_hw_breakpoint ()) |
1ec68e26 PA |
1249 | { |
1250 | sprintf (buf, "hwbreak:;"); | |
1251 | buf += strlen (buf); | |
1252 | } | |
5b1c542e PA |
1253 | |
1254 | while (*regp) | |
1255 | { | |
3aee8918 | 1256 | buf = outreg (regcache, find_regno (regcache->tdesc, *regp), buf); |
5b1c542e PA |
1257 | regp ++; |
1258 | } | |
5472f405 | 1259 | *buf = '\0'; |
5b1c542e PA |
1260 | |
1261 | /* Formerly, if the debugger had not used any thread features | |
1262 | we would not burden it with a thread status response. This | |
1263 | was for the benefit of GDB 4.13 and older. However, in | |
1264 | recent GDB versions the check (``if (cont_thread != 0)'') | |
1265 | does not have the desired effect because of sillyness in | |
1266 | the way that the remote protocol handles specifying a | |
1267 | thread. Since thread support relies on qSymbol support | |
1268 | anyway, assume GDB can handle threads. */ | |
1269 | ||
1270 | if (using_threads && !disable_packet_Tthread) | |
1271 | { | |
1272 | /* This if (1) ought to be unnecessary. But remote_wait | |
1273 | in GDB will claim this event belongs to inferior_ptid | |
1274 | if we do not specify a thread, and there's no way for | |
1275 | gdbserver to know what inferior_ptid is. */ | |
d7e15655 | 1276 | if (1 || cs.general_thread != ptid) |
5b1c542e | 1277 | { |
dc146f7c | 1278 | int core = -1; |
bd99dc85 PA |
1279 | /* In non-stop, don't change the general thread behind |
1280 | GDB's back. */ | |
1281 | if (!non_stop) | |
c12a5089 | 1282 | cs.general_thread = ptid; |
95954743 PA |
1283 | sprintf (buf, "thread:"); |
1284 | buf += strlen (buf); | |
1285 | buf = write_ptid (buf, ptid); | |
1286 | strcat (buf, ";"); | |
5b1c542e | 1287 | buf += strlen (buf); |
dc146f7c | 1288 | |
3e10640f YQ |
1289 | core = target_core_of_thread (ptid); |
1290 | ||
dc146f7c VP |
1291 | if (core != -1) |
1292 | { | |
1293 | sprintf (buf, "core:"); | |
1294 | buf += strlen (buf); | |
1295 | sprintf (buf, "%x", core); | |
1296 | strcat (buf, ";"); | |
1297 | buf += strlen (buf); | |
1298 | } | |
5b1c542e PA |
1299 | } |
1300 | } | |
1301 | ||
1302 | if (dlls_changed) | |
1303 | { | |
1304 | strcpy (buf, "library:;"); | |
1305 | buf += strlen (buf); | |
1306 | dlls_changed = 0; | |
1307 | } | |
1308 | ||
0bfdf32f | 1309 | current_thread = saved_thread; |
5b1c542e PA |
1310 | } |
1311 | break; | |
1312 | case TARGET_WAITKIND_EXITED: | |
c12a5089 | 1313 | if (cs.multi_process) |
95954743 | 1314 | sprintf (buf, "W%x;process:%x", |
e99b03dc | 1315 | status->value.integer, ptid.pid ()); |
95954743 PA |
1316 | else |
1317 | sprintf (buf, "W%02x", status->value.integer); | |
5b1c542e PA |
1318 | break; |
1319 | case TARGET_WAITKIND_SIGNALLED: | |
c12a5089 | 1320 | if (cs.multi_process) |
95954743 | 1321 | sprintf (buf, "X%x;process:%x", |
e99b03dc | 1322 | status->value.sig, ptid.pid ()); |
95954743 PA |
1323 | else |
1324 | sprintf (buf, "X%02x", status->value.sig); | |
5b1c542e | 1325 | break; |
65706a29 PA |
1326 | case TARGET_WAITKIND_THREAD_EXITED: |
1327 | sprintf (buf, "w%x;", status->value.integer); | |
1328 | buf += strlen (buf); | |
1329 | buf = write_ptid (buf, ptid); | |
1330 | break; | |
f2faf941 PA |
1331 | case TARGET_WAITKIND_NO_RESUMED: |
1332 | sprintf (buf, "N"); | |
1333 | break; | |
5b1c542e PA |
1334 | default: |
1335 | error ("unhandled waitkind"); | |
1336 | break; | |
c906108c | 1337 | } |
c906108c SS |
1338 | } |
1339 | ||
1340 | void | |
fba45db2 | 1341 | decode_m_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr) |
c906108c SS |
1342 | { |
1343 | int i = 0, j = 0; | |
1344 | char ch; | |
1345 | *mem_addr_ptr = *len_ptr = 0; | |
1346 | ||
1347 | while ((ch = from[i++]) != ',') | |
1348 | { | |
1349 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1350 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1351 | } | |
1352 | ||
1353 | for (j = 0; j < 4; j++) | |
1354 | { | |
1355 | if ((ch = from[i++]) == 0) | |
1356 | break; | |
1357 | *len_ptr = *len_ptr << 4; | |
1358 | *len_ptr |= fromhex (ch) & 0x0f; | |
1359 | } | |
1360 | } | |
1361 | ||
1362 | void | |
fba45db2 | 1363 | decode_M_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr, |
fa593d66 | 1364 | unsigned char **to_p) |
c906108c SS |
1365 | { |
1366 | int i = 0; | |
1367 | char ch; | |
1368 | *mem_addr_ptr = *len_ptr = 0; | |
1369 | ||
1370 | while ((ch = from[i++]) != ',') | |
1371 | { | |
1372 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1373 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1374 | } | |
1375 | ||
1376 | while ((ch = from[i++]) != ':') | |
1377 | { | |
1378 | *len_ptr = *len_ptr << 4; | |
1379 | *len_ptr |= fromhex (ch) & 0x0f; | |
1380 | } | |
1381 | ||
fa593d66 | 1382 | if (*to_p == NULL) |
224c3ddb | 1383 | *to_p = (unsigned char *) xmalloc (*len_ptr); |
fa593d66 | 1384 | |
a7191e8b | 1385 | hex2bin (&from[i++], *to_p, *len_ptr); |
c906108c | 1386 | } |
2f2893d9 | 1387 | |
01f9e8fa DJ |
1388 | int |
1389 | decode_X_packet (char *from, int packet_len, CORE_ADDR *mem_addr_ptr, | |
fa593d66 | 1390 | unsigned int *len_ptr, unsigned char **to_p) |
01f9e8fa DJ |
1391 | { |
1392 | int i = 0; | |
1393 | char ch; | |
1394 | *mem_addr_ptr = *len_ptr = 0; | |
1395 | ||
1396 | while ((ch = from[i++]) != ',') | |
1397 | { | |
1398 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1399 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1400 | } | |
1401 | ||
1402 | while ((ch = from[i++]) != ':') | |
1403 | { | |
1404 | *len_ptr = *len_ptr << 4; | |
1405 | *len_ptr |= fromhex (ch) & 0x0f; | |
1406 | } | |
1407 | ||
fa593d66 | 1408 | if (*to_p == NULL) |
224c3ddb | 1409 | *to_p = (unsigned char *) xmalloc (*len_ptr); |
fa593d66 | 1410 | |
01f9e8fa | 1411 | if (remote_unescape_input ((const gdb_byte *) &from[i], packet_len - i, |
fa593d66 | 1412 | *to_p, *len_ptr) != *len_ptr) |
01f9e8fa DJ |
1413 | return -1; |
1414 | ||
1415 | return 0; | |
1416 | } | |
1417 | ||
0e7f50da | 1418 | /* Decode a qXfer write request. */ |
d08aafef | 1419 | |
0e7f50da | 1420 | int |
d08aafef | 1421 | decode_xfer_write (char *buf, int packet_len, CORE_ADDR *offset, |
0e7f50da UW |
1422 | unsigned int *len, unsigned char *data) |
1423 | { | |
1424 | char ch; | |
d08aafef | 1425 | char *b = buf; |
0e7f50da UW |
1426 | |
1427 | /* Extract the offset. */ | |
1428 | *offset = 0; | |
1429 | while ((ch = *buf++) != ':') | |
1430 | { | |
1431 | *offset = *offset << 4; | |
1432 | *offset |= fromhex (ch) & 0x0f; | |
1433 | } | |
1434 | ||
1435 | /* Get encoded data. */ | |
d08aafef | 1436 | packet_len -= buf - b; |
0e7f50da UW |
1437 | *len = remote_unescape_input ((const gdb_byte *) buf, packet_len, |
1438 | data, packet_len); | |
1439 | return 0; | |
1440 | } | |
1441 | ||
08388c79 DE |
1442 | /* Decode the parameters of a qSearch:memory packet. */ |
1443 | ||
1444 | int | |
1445 | decode_search_memory_packet (const char *buf, int packet_len, | |
1446 | CORE_ADDR *start_addrp, | |
1447 | CORE_ADDR *search_space_lenp, | |
1448 | gdb_byte *pattern, unsigned int *pattern_lenp) | |
1449 | { | |
1450 | const char *p = buf; | |
1451 | ||
1452 | p = decode_address_to_semicolon (start_addrp, p); | |
1453 | p = decode_address_to_semicolon (search_space_lenp, p); | |
1454 | packet_len -= p - buf; | |
1455 | *pattern_lenp = remote_unescape_input ((const gdb_byte *) p, packet_len, | |
1456 | pattern, packet_len); | |
1457 | return 0; | |
1458 | } | |
1459 | ||
95954743 PA |
1460 | static void |
1461 | free_sym_cache (struct sym_cache *sym) | |
1462 | { | |
1463 | if (sym != NULL) | |
1464 | { | |
1465 | free (sym->name); | |
1466 | free (sym); | |
1467 | } | |
1468 | } | |
1469 | ||
1470 | void | |
1471 | clear_symbol_cache (struct sym_cache **symcache_p) | |
1472 | { | |
1473 | struct sym_cache *sym, *next; | |
1474 | ||
1475 | /* Check the cache first. */ | |
1476 | for (sym = *symcache_p; sym; sym = next) | |
1477 | { | |
1478 | next = sym->next; | |
1479 | free_sym_cache (sym); | |
1480 | } | |
1481 | ||
1482 | *symcache_p = NULL; | |
1483 | } | |
1484 | ||
9836d6ea PA |
1485 | /* Get the address of NAME, and return it in ADDRP if found. if |
1486 | MAY_ASK_GDB is false, assume symbol cache misses are failures. | |
fd500816 DJ |
1487 | Returns 1 if the symbol is found, 0 if it is not, -1 on error. */ |
1488 | ||
2f2893d9 | 1489 | int |
9836d6ea | 1490 | look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb) |
2f2893d9 | 1491 | { |
c12a5089 | 1492 | client_state &cs = get_client_state (); |
28170b88 | 1493 | char *p, *q; |
2f2893d9 | 1494 | int len; |
fd500816 | 1495 | struct sym_cache *sym; |
95954743 PA |
1496 | struct process_info *proc; |
1497 | ||
1498 | proc = current_process (); | |
fd500816 DJ |
1499 | |
1500 | /* Check the cache first. */ | |
95954743 | 1501 | for (sym = proc->symbol_cache; sym; sym = sym->next) |
fd500816 DJ |
1502 | if (strcmp (name, sym->name) == 0) |
1503 | { | |
1504 | *addrp = sym->addr; | |
1505 | return 1; | |
1506 | } | |
2f2893d9 | 1507 | |
9836d6ea PA |
1508 | /* It might not be an appropriate time to look up a symbol, |
1509 | e.g. while we're trying to fetch registers. */ | |
1510 | if (!may_ask_gdb) | |
ea025f5f DJ |
1511 | return 0; |
1512 | ||
2f2893d9 | 1513 | /* Send the request. */ |
c12a5089 SC |
1514 | strcpy (cs.own_buf, "qSymbol:"); |
1515 | bin2hex ((const gdb_byte *) name, cs.own_buf + strlen ("qSymbol:"), | |
971dc0b8 | 1516 | strlen (name)); |
c12a5089 | 1517 | if (putpkt (cs.own_buf) < 0) |
2f2893d9 DJ |
1518 | return -1; |
1519 | ||
1520 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
c12a5089 | 1521 | len = getpkt (cs.own_buf); |
2f2893d9 DJ |
1522 | if (len < 0) |
1523 | return -1; | |
1524 | ||
2bbe3cc1 DJ |
1525 | /* We ought to handle pretty much any packet at this point while we |
1526 | wait for the qSymbol "response". That requires re-entering the | |
1527 | main loop. For now, this is an adequate approximation; allow | |
28170b88 MK |
1528 | GDB to read from memory and handle 'v' packets (for vFile transfers) |
1529 | while it figures out the address of the symbol. */ | |
1530 | while (1) | |
2bbe3cc1 | 1531 | { |
c12a5089 | 1532 | if (cs.own_buf[0] == 'm') |
28170b88 MK |
1533 | { |
1534 | CORE_ADDR mem_addr; | |
1535 | unsigned char *mem_buf; | |
1536 | unsigned int mem_len; | |
1537 | ||
c12a5089 | 1538 | decode_m_packet (&cs.own_buf[1], &mem_addr, &mem_len); |
28170b88 MK |
1539 | mem_buf = (unsigned char *) xmalloc (mem_len); |
1540 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) | |
c12a5089 | 1541 | bin2hex (mem_buf, cs.own_buf, mem_len); |
28170b88 | 1542 | else |
c12a5089 | 1543 | write_enn (cs.own_buf); |
28170b88 | 1544 | free (mem_buf); |
c12a5089 | 1545 | if (putpkt (cs.own_buf) < 0) |
28170b88 MK |
1546 | return -1; |
1547 | } | |
c12a5089 | 1548 | else if (cs.own_buf[0] == 'v') |
28170b88 MK |
1549 | { |
1550 | int new_len = -1; | |
c12a5089 | 1551 | handle_v_requests (cs.own_buf, len, &new_len); |
28170b88 | 1552 | if (new_len != -1) |
c12a5089 | 1553 | putpkt_binary (cs.own_buf, new_len); |
28170b88 | 1554 | else |
c12a5089 | 1555 | putpkt (cs.own_buf); |
28170b88 | 1556 | } |
2bbe3cc1 | 1557 | else |
28170b88 | 1558 | break; |
c12a5089 | 1559 | len = getpkt (cs.own_buf); |
2bbe3cc1 DJ |
1560 | if (len < 0) |
1561 | return -1; | |
1562 | } | |
1b3f6016 | 1563 | |
c12a5089 | 1564 | if (!startswith (cs.own_buf, "qSymbol:")) |
2f2893d9 | 1565 | { |
c12a5089 | 1566 | warning ("Malformed response to qSymbol, ignoring: %s\n", cs.own_buf); |
2f2893d9 DJ |
1567 | return -1; |
1568 | } | |
1569 | ||
c12a5089 | 1570 | p = cs.own_buf + strlen ("qSymbol:"); |
2f2893d9 DJ |
1571 | q = p; |
1572 | while (*q && *q != ':') | |
1573 | q++; | |
1574 | ||
1575 | /* Make sure we found a value for the symbol. */ | |
1576 | if (p == q || *q == '\0') | |
1577 | return 0; | |
1578 | ||
1579 | decode_address (addrp, p, q - p); | |
fd500816 DJ |
1580 | |
1581 | /* Save the symbol in our cache. */ | |
8d749320 | 1582 | sym = XNEW (struct sym_cache); |
bca929d3 | 1583 | sym->name = xstrdup (name); |
fd500816 | 1584 | sym->addr = *addrp; |
95954743 PA |
1585 | sym->next = proc->symbol_cache; |
1586 | proc->symbol_cache = sym; | |
fd500816 | 1587 | |
2f2893d9 DJ |
1588 | return 1; |
1589 | } | |
c74d0ad8 | 1590 | |
fa593d66 PA |
1591 | /* Relocate an instruction to execute at a different address. OLDLOC |
1592 | is the address in the inferior memory where the instruction to | |
1593 | relocate is currently at. On input, TO points to the destination | |
1594 | where we want the instruction to be copied (and possibly adjusted) | |
1595 | to. On output, it points to one past the end of the resulting | |
1596 | instruction(s). The effect of executing the instruction at TO | |
86a30030 | 1597 | shall be the same as if executing it at OLDLOC. For example, call |
fa593d66 PA |
1598 | instructions that implicitly push the return address on the stack |
1599 | should be adjusted to return to the instruction after OLDLOC; | |
1600 | relative branches, and other PC-relative instructions need the | |
1601 | offset adjusted; etc. Returns 0 on success, -1 on failure. */ | |
1602 | ||
1603 | int | |
1604 | relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc) | |
1605 | { | |
c12a5089 | 1606 | client_state &cs = get_client_state (); |
fa593d66 PA |
1607 | int len; |
1608 | ULONGEST written = 0; | |
1609 | ||
1610 | /* Send the request. */ | |
c12a5089 | 1611 | sprintf (cs.own_buf, "qRelocInsn:%s;%s", paddress (oldloc), |
fa593d66 | 1612 | paddress (*to)); |
c12a5089 | 1613 | if (putpkt (cs.own_buf) < 0) |
fa593d66 PA |
1614 | return -1; |
1615 | ||
1616 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
c12a5089 | 1617 | len = getpkt (cs.own_buf); |
fa593d66 PA |
1618 | if (len < 0) |
1619 | return -1; | |
1620 | ||
1621 | /* We ought to handle pretty much any packet at this point while we | |
1622 | wait for the qRelocInsn "response". That requires re-entering | |
1623 | the main loop. For now, this is an adequate approximation; allow | |
1624 | GDB to access memory. */ | |
c12a5089 | 1625 | while (cs.own_buf[0] == 'm' || cs.own_buf[0] == 'M' || cs.own_buf[0] == 'X') |
fa593d66 PA |
1626 | { |
1627 | CORE_ADDR mem_addr; | |
1628 | unsigned char *mem_buf = NULL; | |
1629 | unsigned int mem_len; | |
1630 | ||
c12a5089 | 1631 | if (cs.own_buf[0] == 'm') |
fa593d66 | 1632 | { |
c12a5089 | 1633 | decode_m_packet (&cs.own_buf[1], &mem_addr, &mem_len); |
224c3ddb | 1634 | mem_buf = (unsigned char *) xmalloc (mem_len); |
fa593d66 | 1635 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) |
c12a5089 | 1636 | bin2hex (mem_buf, cs.own_buf, mem_len); |
fa593d66 | 1637 | else |
c12a5089 | 1638 | write_enn (cs.own_buf); |
fa593d66 | 1639 | } |
c12a5089 | 1640 | else if (cs.own_buf[0] == 'X') |
fa593d66 | 1641 | { |
c12a5089 | 1642 | if (decode_X_packet (&cs.own_buf[1], len - 1, &mem_addr, |
fa593d66 PA |
1643 | &mem_len, &mem_buf) < 0 |
1644 | || write_inferior_memory (mem_addr, mem_buf, mem_len) != 0) | |
c12a5089 | 1645 | write_enn (cs.own_buf); |
fa593d66 | 1646 | else |
c12a5089 | 1647 | write_ok (cs.own_buf); |
fa593d66 PA |
1648 | } |
1649 | else | |
1650 | { | |
c12a5089 | 1651 | decode_M_packet (&cs.own_buf[1], &mem_addr, &mem_len, &mem_buf); |
fa593d66 | 1652 | if (write_inferior_memory (mem_addr, mem_buf, mem_len) == 0) |
c12a5089 | 1653 | write_ok (cs.own_buf); |
fa593d66 | 1654 | else |
c12a5089 | 1655 | write_enn (cs.own_buf); |
fa593d66 PA |
1656 | } |
1657 | free (mem_buf); | |
c12a5089 | 1658 | if (putpkt (cs.own_buf) < 0) |
fa593d66 | 1659 | return -1; |
c12a5089 | 1660 | len = getpkt (cs.own_buf); |
fa593d66 PA |
1661 | if (len < 0) |
1662 | return -1; | |
1663 | } | |
1664 | ||
c12a5089 | 1665 | if (cs.own_buf[0] == 'E') |
fa593d66 PA |
1666 | { |
1667 | warning ("An error occurred while relocating an instruction: %s\n", | |
c12a5089 | 1668 | cs.own_buf); |
fa593d66 PA |
1669 | return -1; |
1670 | } | |
1671 | ||
c12a5089 | 1672 | if (!startswith (cs.own_buf, "qRelocInsn:")) |
fa593d66 PA |
1673 | { |
1674 | warning ("Malformed response to qRelocInsn, ignoring: %s\n", | |
c12a5089 | 1675 | cs.own_buf); |
fa593d66 PA |
1676 | return -1; |
1677 | } | |
1678 | ||
c12a5089 | 1679 | unpack_varlen_hex (cs.own_buf + strlen ("qRelocInsn:"), &written); |
fa593d66 PA |
1680 | |
1681 | *to += written; | |
1682 | return 0; | |
1683 | } | |
1684 | ||
c74d0ad8 | 1685 | void |
bce7165d | 1686 | monitor_output (const char *msg) |
c74d0ad8 | 1687 | { |
0a822afb | 1688 | int len = strlen (msg); |
224c3ddb | 1689 | char *buf = (char *) xmalloc (len * 2 + 2); |
c74d0ad8 DJ |
1690 | |
1691 | buf[0] = 'O'; | |
971dc0b8 | 1692 | bin2hex ((const gdb_byte *) msg, buf + 1, len); |
c74d0ad8 DJ |
1693 | |
1694 | putpkt (buf); | |
1695 | free (buf); | |
1696 | } | |
255e7678 | 1697 | |
0fb4aa4b | 1698 | #endif |