Commit | Line | Data |
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c906108c | 1 | /* Remote utility routines for the remote server for GDB. |
42a4f53d | 2 | Copyright (C) 1986-2019 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" |
0747795c TT |
27 | #include "common/rsp-low.h" |
28 | #include "common/netstuff.h" | |
29 | #include "common/filestuff.h" | |
fafcc06a | 30 | #include <ctype.h> |
b80864fb | 31 | #if HAVE_SYS_IOCTL_H |
c906108c | 32 | #include <sys/ioctl.h> |
b80864fb | 33 | #endif |
68070c10 | 34 | #if HAVE_SYS_FILE_H |
c906108c | 35 | #include <sys/file.h> |
68070c10 | 36 | #endif |
9eb1356e PA |
37 | #if HAVE_NETINET_IN_H |
38 | #include <netinet/in.h> | |
39 | #endif | |
40 | #if HAVE_SYS_SOCKET_H | |
41 | #include <sys/socket.h> | |
42 | #endif | |
b80864fb | 43 | #if HAVE_NETDB_H |
c906108c | 44 | #include <netdb.h> |
b80864fb DJ |
45 | #endif |
46 | #if HAVE_NETINET_TCP_H | |
c906108c | 47 | #include <netinet/tcp.h> |
b80864fb DJ |
48 | #endif |
49 | #if HAVE_SYS_IOCTL_H | |
c906108c | 50 | #include <sys/ioctl.h> |
b80864fb | 51 | #endif |
68070c10 | 52 | #if HAVE_SIGNAL_H |
c906108c | 53 | #include <signal.h> |
68070c10 PA |
54 | #endif |
55 | #if HAVE_FCNTL_H | |
c906108c | 56 | #include <fcntl.h> |
68070c10 | 57 | #endif |
0747795c | 58 | #include "common/gdb_sys_time.h" |
cf30a8e1 | 59 | #include <unistd.h> |
b80864fb | 60 | #if HAVE_ARPA_INET_H |
0729219d | 61 | #include <arpa/inet.h> |
b80864fb | 62 | #endif |
53ce3c39 | 63 | #include <sys/stat.h> |
9eb1356e PA |
64 | |
65 | #if USE_WIN32API | |
41fa577f | 66 | #include <ws2tcpip.h> |
9eb1356e | 67 | #endif |
c906108c | 68 | |
ac8c974e AR |
69 | #if __QNX__ |
70 | #include <sys/iomgr.h> | |
71 | #endif /* __QNX__ */ | |
72 | ||
f450004a DJ |
73 | #ifndef HAVE_SOCKLEN_T |
74 | typedef int socklen_t; | |
75 | #endif | |
76 | ||
0fb4aa4b PA |
77 | #ifndef IN_PROCESS_AGENT |
78 | ||
7390519e PA |
79 | #if USE_WIN32API |
80 | # define INVALID_DESCRIPTOR INVALID_SOCKET | |
81 | #else | |
82 | # define INVALID_DESCRIPTOR -1 | |
83 | #endif | |
84 | ||
24b066ba DE |
85 | /* Extra value for readchar_callback. */ |
86 | enum { | |
87 | /* The callback is currently not scheduled. */ | |
88 | NOT_SCHEDULED = -1 | |
89 | }; | |
90 | ||
91 | /* Status of the readchar callback. | |
92 | Either NOT_SCHEDULED or the callback id. */ | |
93 | static int readchar_callback = NOT_SCHEDULED; | |
94 | ||
bc3b5632 | 95 | static int readchar (void); |
24b066ba DE |
96 | static void reset_readchar (void); |
97 | static void reschedule (void); | |
bc3b5632 | 98 | |
fd500816 DJ |
99 | /* A cache entry for a successfully looked-up symbol. */ |
100 | struct sym_cache | |
101 | { | |
95954743 | 102 | char *name; |
fd500816 DJ |
103 | CORE_ADDR addr; |
104 | struct sym_cache *next; | |
105 | }; | |
106 | ||
e0f9f062 DE |
107 | static int remote_is_stdio = 0; |
108 | ||
ec48365d PA |
109 | static gdb_fildes_t remote_desc = INVALID_DESCRIPTOR; |
110 | static gdb_fildes_t listen_desc = INVALID_DESCRIPTOR; | |
c906108c | 111 | |
0d62e5e8 DJ |
112 | /* FIXME headerize? */ |
113 | extern int using_threads; | |
114 | extern int debug_threads; | |
115 | ||
0f48aa01 | 116 | #ifdef USE_WIN32API |
68070c10 PA |
117 | # define read(fd, buf, len) recv (fd, (char *) buf, len, 0) |
118 | # define write(fd, buf, len) send (fd, (char *) buf, len, 0) | |
0f48aa01 DJ |
119 | #endif |
120 | ||
8336d594 PA |
121 | int |
122 | gdb_connected (void) | |
123 | { | |
124 | return remote_desc != INVALID_DESCRIPTOR; | |
125 | } | |
126 | ||
e0f9f062 DE |
127 | /* Return true if the remote connection is over stdio. */ |
128 | ||
129 | int | |
130 | remote_connection_is_stdio (void) | |
131 | { | |
132 | return remote_is_stdio; | |
133 | } | |
134 | ||
8336d594 PA |
135 | static void |
136 | enable_async_notification (int fd) | |
137 | { | |
138 | #if defined(F_SETFL) && defined (FASYNC) | |
139 | int save_fcntl_flags; | |
140 | ||
141 | save_fcntl_flags = fcntl (fd, F_GETFL, 0); | |
142 | fcntl (fd, F_SETFL, save_fcntl_flags | FASYNC); | |
143 | #if defined (F_SETOWN) | |
144 | fcntl (fd, F_SETOWN, getpid ()); | |
145 | #endif | |
146 | #endif | |
147 | } | |
148 | ||
149 | static int | |
150 | handle_accept_event (int err, gdb_client_data client_data) | |
151 | { | |
c7ab0aef SDJ |
152 | struct sockaddr_storage sockaddr; |
153 | socklen_t len = sizeof (sockaddr); | |
8336d594 PA |
154 | |
155 | if (debug_threads) | |
87ce2a04 | 156 | debug_printf ("handling possible accept event\n"); |
8336d594 | 157 | |
c7ab0aef | 158 | remote_desc = accept (listen_desc, (struct sockaddr *) &sockaddr, &len); |
8336d594 PA |
159 | if (remote_desc == -1) |
160 | perror_with_name ("Accept failed"); | |
161 | ||
162 | /* Enable TCP keep alive process. */ | |
c7ab0aef | 163 | socklen_t tmp = 1; |
8336d594 PA |
164 | setsockopt (remote_desc, SOL_SOCKET, SO_KEEPALIVE, |
165 | (char *) &tmp, sizeof (tmp)); | |
166 | ||
167 | /* Tell TCP not to delay small packets. This greatly speeds up | |
168 | interactive response. */ | |
169 | tmp = 1; | |
170 | setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY, | |
171 | (char *) &tmp, sizeof (tmp)); | |
172 | ||
173 | #ifndef USE_WIN32API | |
8336d594 PA |
174 | signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply |
175 | exits when the remote side dies. */ | |
03f2bd59 JK |
176 | #endif |
177 | ||
178 | if (run_once) | |
179 | { | |
180 | #ifndef USE_WIN32API | |
181 | close (listen_desc); /* No longer need this */ | |
8336d594 | 182 | #else |
03f2bd59 | 183 | closesocket (listen_desc); /* No longer need this */ |
8336d594 | 184 | #endif |
03f2bd59 | 185 | } |
8336d594 | 186 | |
03f2bd59 JK |
187 | /* Even if !RUN_ONCE no longer notice new connections. Still keep the |
188 | descriptor open for add_file_handler to wait for a new connection. */ | |
8336d594 PA |
189 | delete_file_handler (listen_desc); |
190 | ||
80e24d09 SM |
191 | /* Convert IP address to string. */ |
192 | char orig_host[GDB_NI_MAX_ADDR], orig_port[GDB_NI_MAX_PORT]; | |
c7ab0aef | 193 | |
80e24d09 SM |
194 | int r = getnameinfo ((struct sockaddr *) &sockaddr, len, |
195 | orig_host, sizeof (orig_host), | |
196 | orig_port, sizeof (orig_port), | |
197 | NI_NUMERICHOST | NI_NUMERICSERV); | |
c7ab0aef | 198 | |
80e24d09 SM |
199 | if (r != 0) |
200 | fprintf (stderr, _("Could not obtain remote address: %s\n"), | |
201 | gai_strerror (r)); | |
c7ab0aef | 202 | else |
80e24d09 SM |
203 | fprintf (stderr, _("Remote debugging from host %s, port %s\n"), |
204 | orig_host, orig_port); | |
8336d594 PA |
205 | |
206 | enable_async_notification (remote_desc); | |
207 | ||
208 | /* Register the event loop handler. */ | |
209 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
210 | ||
211 | /* We have a new GDB connection now. If we were disconnected | |
212 | tracing, there's a window where the target could report a stop | |
213 | event to the event loop, and since we have a connection now, we'd | |
214 | try to send vStopped notifications to GDB. But, don't do that | |
215 | until GDB as selected all-stop/non-stop, and has queried the | |
216 | threads' status ('?'). */ | |
217 | target_async (0); | |
218 | ||
219 | return 0; | |
220 | } | |
221 | ||
03f2bd59 JK |
222 | /* Prepare for a later connection to a remote debugger. |
223 | NAME is the filename used for communication. */ | |
224 | ||
225 | void | |
fb32b4f7 | 226 | remote_prepare (const char *name) |
03f2bd59 | 227 | { |
c12a5089 | 228 | client_state &cs = get_client_state (); |
03f2bd59 JK |
229 | #ifdef USE_WIN32API |
230 | static int winsock_initialized; | |
231 | #endif | |
03f2bd59 | 232 | socklen_t tmp; |
03f2bd59 | 233 | |
e0f9f062 DE |
234 | remote_is_stdio = 0; |
235 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
236 | { | |
237 | /* We need to record fact that we're using stdio sooner than the | |
238 | call to remote_open so start_inferior knows the connection is | |
239 | via stdio. */ | |
240 | remote_is_stdio = 1; | |
c12a5089 | 241 | cs.transport_is_reliable = 1; |
e0f9f062 DE |
242 | return; |
243 | } | |
244 | ||
c7ab0aef SDJ |
245 | struct addrinfo hint; |
246 | struct addrinfo *ainfo; | |
247 | ||
248 | memset (&hint, 0, sizeof (hint)); | |
249 | /* Assume no prefix will be passed, therefore we should use | |
250 | AF_UNSPEC. */ | |
251 | hint.ai_family = AF_UNSPEC; | |
252 | hint.ai_socktype = SOCK_STREAM; | |
253 | hint.ai_protocol = IPPROTO_TCP; | |
254 | ||
255 | parsed_connection_spec parsed | |
80e24d09 | 256 | = parse_connection_spec_without_prefix (name, &hint); |
c7ab0aef SDJ |
257 | |
258 | if (parsed.port_str.empty ()) | |
03f2bd59 | 259 | { |
c12a5089 | 260 | cs.transport_is_reliable = 0; |
03f2bd59 JK |
261 | return; |
262 | } | |
263 | ||
03f2bd59 JK |
264 | #ifdef USE_WIN32API |
265 | if (!winsock_initialized) | |
266 | { | |
267 | WSADATA wsad; | |
268 | ||
269 | WSAStartup (MAKEWORD (1, 0), &wsad); | |
270 | winsock_initialized = 1; | |
271 | } | |
272 | #endif | |
273 | ||
80e24d09 SM |
274 | int r = getaddrinfo (parsed.host_str.c_str (), parsed.port_str.c_str (), |
275 | &hint, &ainfo); | |
c7ab0aef | 276 | |
80e24d09 SM |
277 | if (r != 0) |
278 | error (_("%s: cannot resolve name: %s"), name, gai_strerror (r)); | |
c7ab0aef | 279 | |
80e24d09 | 280 | scoped_free_addrinfo freeaddrinfo (ainfo); |
c7ab0aef | 281 | |
80e24d09 | 282 | struct addrinfo *iter; |
c7ab0aef | 283 | |
80e24d09 | 284 | for (iter = ainfo; iter != NULL; iter = iter->ai_next) |
f19c7ff8 | 285 | { |
80e24d09 SM |
286 | listen_desc = gdb_socket_cloexec (iter->ai_family, iter->ai_socktype, |
287 | iter->ai_protocol); | |
f19c7ff8 | 288 | |
80e24d09 SM |
289 | if (listen_desc >= 0) |
290 | break; | |
291 | } | |
f19c7ff8 | 292 | |
80e24d09 SM |
293 | if (iter == NULL) |
294 | perror_with_name ("Can't open socket"); | |
f19c7ff8 | 295 | |
80e24d09 SM |
296 | /* Allow rapid reuse of this port. */ |
297 | tmp = 1; | |
298 | setsockopt (listen_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, | |
299 | sizeof (tmp)); | |
f19c7ff8 | 300 | |
80e24d09 SM |
301 | switch (iter->ai_family) |
302 | { | |
303 | case AF_INET: | |
304 | ((struct sockaddr_in *) iter->ai_addr)->sin_addr.s_addr = INADDR_ANY; | |
305 | break; | |
306 | case AF_INET6: | |
307 | ((struct sockaddr_in6 *) iter->ai_addr)->sin6_addr = in6addr_any; | |
308 | break; | |
309 | default: | |
310 | internal_error (__FILE__, __LINE__, | |
311 | _("Invalid 'ai_family' %d\n"), iter->ai_family); | |
c7ab0aef | 312 | } |
03f2bd59 | 313 | |
80e24d09 | 314 | if (bind (listen_desc, iter->ai_addr, iter->ai_addrlen) != 0) |
03f2bd59 JK |
315 | perror_with_name ("Can't bind address"); |
316 | ||
c7ab0aef SDJ |
317 | if (listen (listen_desc, 1) != 0) |
318 | perror_with_name ("Can't listen on socket"); | |
319 | ||
c12a5089 | 320 | cs.transport_is_reliable = 1; |
03f2bd59 JK |
321 | } |
322 | ||
c906108c SS |
323 | /* Open a connection to a remote debugger. |
324 | NAME is the filename used for communication. */ | |
325 | ||
326 | void | |
fb32b4f7 | 327 | remote_open (const char *name) |
c906108c | 328 | { |
fb32b4f7 | 329 | const char *port_str; |
8264bb58 DJ |
330 | |
331 | port_str = strchr (name, ':'); | |
e0f9f062 | 332 | #ifdef USE_WIN32API |
8264bb58 | 333 | if (port_str == NULL) |
752312ba | 334 | error ("Only HOST:PORT is supported on this platform."); |
e0f9f062 DE |
335 | #endif |
336 | ||
337 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
338 | { | |
339 | fprintf (stderr, "Remote debugging using stdio\n"); | |
340 | ||
341 | /* Use stdin as the handle of the connection. | |
342 | We only select on reads, for example. */ | |
343 | remote_desc = fileno (stdin); | |
344 | ||
345 | enable_async_notification (remote_desc); | |
346 | ||
347 | /* Register the event loop handler. */ | |
348 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
349 | } | |
350 | #ifndef USE_WIN32API | |
351 | else if (port_str == NULL) | |
80e24d09 | 352 | { |
8264bb58 DJ |
353 | struct stat statbuf; |
354 | ||
355 | if (stat (name, &statbuf) == 0 | |
80e24d09 | 356 | && (S_ISCHR (statbuf.st_mode) || S_ISFIFO (statbuf.st_mode))) |
8264bb58 DJ |
357 | remote_desc = open (name, O_RDWR); |
358 | else | |
359 | { | |
360 | errno = EINVAL; | |
361 | remote_desc = -1; | |
362 | } | |
363 | ||
c906108c SS |
364 | if (remote_desc < 0) |
365 | perror_with_name ("Could not open remote device"); | |
366 | ||
726e1356 | 367 | #if HAVE_TERMIOS_H |
c906108c SS |
368 | { |
369 | struct termios termios; | |
c5aa993b | 370 | tcgetattr (remote_desc, &termios); |
c906108c SS |
371 | |
372 | termios.c_iflag = 0; | |
373 | termios.c_oflag = 0; | |
374 | termios.c_lflag = 0; | |
c5aa993b | 375 | termios.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 376 | termios.c_cflag |= CLOCAL | CS8; |
d0608e50 | 377 | termios.c_cc[VMIN] = 1; |
c906108c SS |
378 | termios.c_cc[VTIME] = 0; |
379 | ||
c5aa993b | 380 | tcsetattr (remote_desc, TCSANOW, &termios); |
c906108c SS |
381 | } |
382 | #endif | |
383 | ||
e641a1ca | 384 | fprintf (stderr, "Remote debugging using %s\n", name); |
a6f3e723 | 385 | |
8336d594 PA |
386 | enable_async_notification (remote_desc); |
387 | ||
388 | /* Register the event loop handler. */ | |
389 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
c906108c | 390 | } |
e0f9f062 | 391 | #endif /* USE_WIN32API */ |
c906108c SS |
392 | else |
393 | { | |
c7ab0aef SDJ |
394 | char listen_port[GDB_NI_MAX_PORT]; |
395 | struct sockaddr_storage sockaddr; | |
396 | socklen_t len = sizeof (sockaddr); | |
397 | ||
398 | if (getsockname (listen_desc, (struct sockaddr *) &sockaddr, &len) < 0) | |
03f2bd59 | 399 | perror_with_name ("Can't determine port"); |
6f8486da | 400 | |
c7ab0aef SDJ |
401 | int r = getnameinfo ((struct sockaddr *) &sockaddr, len, |
402 | NULL, 0, | |
403 | listen_port, sizeof (listen_port), | |
404 | NI_NUMERICSERV); | |
405 | ||
406 | if (r != 0) | |
407 | fprintf (stderr, _("Can't obtain port where we are listening: %s"), | |
408 | gai_strerror (r)); | |
409 | else | |
410 | fprintf (stderr, _("Listening on port %s\n"), listen_port); | |
411 | ||
b80864fb | 412 | fflush (stderr); |
6910d122 | 413 | |
8336d594 PA |
414 | /* Register the event loop handler. */ |
415 | add_file_handler (listen_desc, handle_accept_event, NULL); | |
c906108c | 416 | } |
c906108c SS |
417 | } |
418 | ||
419 | void | |
fba45db2 | 420 | remote_close (void) |
c906108c | 421 | { |
bd99dc85 PA |
422 | delete_file_handler (remote_desc); |
423 | ||
e849ea89 | 424 | disable_async_io (); |
8b207339 | 425 | |
b80864fb DJ |
426 | #ifdef USE_WIN32API |
427 | closesocket (remote_desc); | |
428 | #else | |
e0f9f062 DE |
429 | if (! remote_connection_is_stdio ()) |
430 | close (remote_desc); | |
b80864fb | 431 | #endif |
8336d594 | 432 | remote_desc = INVALID_DESCRIPTOR; |
24b066ba DE |
433 | |
434 | reset_readchar (); | |
c906108c SS |
435 | } |
436 | ||
0fb4aa4b PA |
437 | #endif |
438 | ||
0fb4aa4b PA |
439 | #ifndef IN_PROCESS_AGENT |
440 | ||
dae5f5cf | 441 | void |
2f2893d9 DJ |
442 | decode_address (CORE_ADDR *addrp, const char *start, int len) |
443 | { | |
444 | CORE_ADDR addr; | |
445 | char ch; | |
446 | int i; | |
447 | ||
448 | addr = 0; | |
449 | for (i = 0; i < len; i++) | |
450 | { | |
451 | ch = start[i]; | |
452 | addr = addr << 4; | |
453 | addr = addr | (fromhex (ch) & 0x0f); | |
454 | } | |
455 | *addrp = addr; | |
456 | } | |
457 | ||
89be2091 DJ |
458 | const char * |
459 | decode_address_to_semicolon (CORE_ADDR *addrp, const char *start) | |
460 | { | |
461 | const char *end; | |
462 | ||
463 | end = start; | |
464 | while (*end != '\0' && *end != ';') | |
465 | end++; | |
466 | ||
467 | decode_address (addrp, start, end - start); | |
468 | ||
469 | if (*end == ';') | |
470 | end++; | |
471 | return end; | |
472 | } | |
473 | ||
0fb4aa4b PA |
474 | #endif |
475 | ||
0fb4aa4b PA |
476 | #ifndef IN_PROCESS_AGENT |
477 | ||
5ffff7c1 DJ |
478 | /* Look for a sequence of characters which can be run-length encoded. |
479 | If there are any, update *CSUM and *P. Otherwise, output the | |
480 | single character. Return the number of characters consumed. */ | |
481 | ||
482 | static int | |
483 | try_rle (char *buf, int remaining, unsigned char *csum, char **p) | |
484 | { | |
485 | int n; | |
486 | ||
487 | /* Always output the character. */ | |
488 | *csum += buf[0]; | |
489 | *(*p)++ = buf[0]; | |
490 | ||
491 | /* Don't go past '~'. */ | |
492 | if (remaining > 97) | |
493 | remaining = 97; | |
494 | ||
495 | for (n = 1; n < remaining; n++) | |
496 | if (buf[n] != buf[0]) | |
497 | break; | |
498 | ||
499 | /* N is the index of the first character not the same as buf[0]. | |
500 | buf[0] is counted twice, so by decrementing N, we get the number | |
501 | of characters the RLE sequence will replace. */ | |
502 | n--; | |
503 | ||
504 | if (n < 3) | |
505 | return 1; | |
506 | ||
507 | /* Skip the frame characters. The manual says to skip '+' and '-' | |
508 | also, but there's no reason to. Unfortunately these two unusable | |
509 | characters double the encoded length of a four byte zero | |
510 | value. */ | |
511 | while (n + 29 == '$' || n + 29 == '#') | |
512 | n--; | |
513 | ||
514 | *csum += '*'; | |
515 | *(*p)++ = '*'; | |
516 | *csum += n + 29; | |
517 | *(*p)++ = n + 29; | |
518 | ||
519 | return n + 1; | |
520 | } | |
521 | ||
0fb4aa4b PA |
522 | #endif |
523 | ||
0fb4aa4b PA |
524 | #ifndef IN_PROCESS_AGENT |
525 | ||
95954743 PA |
526 | /* Write a PTID to BUF. Returns BUF+CHARACTERS_WRITTEN. */ |
527 | ||
528 | char * | |
529 | write_ptid (char *buf, ptid_t ptid) | |
530 | { | |
c12a5089 | 531 | client_state &cs = get_client_state (); |
95954743 PA |
532 | int pid, tid; |
533 | ||
c12a5089 | 534 | if (cs.multi_process) |
95954743 | 535 | { |
e99b03dc | 536 | pid = ptid.pid (); |
95954743 PA |
537 | if (pid < 0) |
538 | buf += sprintf (buf, "p-%x.", -pid); | |
539 | else | |
540 | buf += sprintf (buf, "p%x.", pid); | |
541 | } | |
e38504b3 | 542 | tid = ptid.lwp (); |
95954743 PA |
543 | if (tid < 0) |
544 | buf += sprintf (buf, "-%x", -tid); | |
545 | else | |
546 | buf += sprintf (buf, "%x", tid); | |
547 | ||
548 | return buf; | |
549 | } | |
550 | ||
5b3da067 | 551 | static ULONGEST |
256642e8 | 552 | hex_or_minus_one (const char *buf, const char **obuf) |
95954743 PA |
553 | { |
554 | ULONGEST ret; | |
555 | ||
61012eef | 556 | if (startswith (buf, "-1")) |
95954743 PA |
557 | { |
558 | ret = (ULONGEST) -1; | |
559 | buf += 2; | |
560 | } | |
561 | else | |
562 | buf = unpack_varlen_hex (buf, &ret); | |
563 | ||
564 | if (obuf) | |
565 | *obuf = buf; | |
566 | ||
567 | return ret; | |
568 | } | |
569 | ||
570 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
571 | passed the last parsed char. Returns null_ptid on error. */ | |
572 | ptid_t | |
256642e8 | 573 | read_ptid (const char *buf, const char **obuf) |
95954743 | 574 | { |
256642e8 PA |
575 | const char *p = buf; |
576 | const char *pp; | |
95954743 PA |
577 | ULONGEST pid = 0, tid = 0; |
578 | ||
579 | if (*p == 'p') | |
580 | { | |
581 | /* Multi-process ptid. */ | |
582 | pp = unpack_varlen_hex (p + 1, &pid); | |
583 | if (*pp != '.') | |
584 | error ("invalid remote ptid: %s\n", p); | |
585 | ||
586 | p = pp + 1; | |
587 | ||
588 | tid = hex_or_minus_one (p, &pp); | |
589 | ||
590 | if (obuf) | |
591 | *obuf = pp; | |
fd79271b | 592 | return ptid_t (pid, tid, 0); |
95954743 PA |
593 | } |
594 | ||
595 | /* No multi-process. Just a tid. */ | |
596 | tid = hex_or_minus_one (p, &pp); | |
597 | ||
3d40fbb5 PA |
598 | /* Since GDB is not sending a process id (multi-process extensions |
599 | are off), then there's only one process. Default to the first in | |
600 | the list. */ | |
601 | pid = pid_of (get_first_process ()); | |
95954743 PA |
602 | |
603 | if (obuf) | |
604 | *obuf = pp; | |
fd79271b | 605 | return ptid_t (pid, tid, 0); |
95954743 PA |
606 | } |
607 | ||
e0f9f062 DE |
608 | /* Write COUNT bytes in BUF to the client. |
609 | The result is the number of bytes written or -1 if error. | |
610 | This may return less than COUNT. */ | |
611 | ||
612 | static int | |
613 | write_prim (const void *buf, int count) | |
614 | { | |
615 | if (remote_connection_is_stdio ()) | |
616 | return write (fileno (stdout), buf, count); | |
617 | else | |
618 | return write (remote_desc, buf, count); | |
619 | } | |
620 | ||
621 | /* Read COUNT bytes from the client and store in BUF. | |
622 | The result is the number of bytes read or -1 if error. | |
623 | This may return less than COUNT. */ | |
624 | ||
625 | static int | |
626 | read_prim (void *buf, int count) | |
627 | { | |
628 | if (remote_connection_is_stdio ()) | |
629 | return read (fileno (stdin), buf, count); | |
630 | else | |
631 | return read (remote_desc, buf, count); | |
632 | } | |
633 | ||
c906108c | 634 | /* Send a packet to the remote machine, with error checking. |
01f9e8fa DJ |
635 | The data of the packet is in BUF, and the length of the |
636 | packet is in CNT. Returns >= 0 on success, -1 otherwise. */ | |
c906108c | 637 | |
bd99dc85 PA |
638 | static int |
639 | putpkt_binary_1 (char *buf, int cnt, int is_notif) | |
c906108c | 640 | { |
c12a5089 | 641 | client_state &cs = get_client_state (); |
c906108c SS |
642 | int i; |
643 | unsigned char csum = 0; | |
0a30fbc4 | 644 | char *buf2; |
c906108c | 645 | char *p; |
bc3b5632 | 646 | int cc; |
c906108c | 647 | |
224c3ddb | 648 | buf2 = (char *) xmalloc (strlen ("$") + cnt + strlen ("#nn") + 1); |
0a30fbc4 | 649 | |
c906108c SS |
650 | /* Copy the packet into buffer BUF2, encapsulating it |
651 | and giving it a checksum. */ | |
652 | ||
653 | p = buf2; | |
bd99dc85 PA |
654 | if (is_notif) |
655 | *p++ = '%'; | |
656 | else | |
657 | *p++ = '$'; | |
c906108c | 658 | |
5ffff7c1 DJ |
659 | for (i = 0; i < cnt;) |
660 | i += try_rle (buf + i, cnt - i, &csum, &p); | |
661 | ||
c906108c SS |
662 | *p++ = '#'; |
663 | *p++ = tohex ((csum >> 4) & 0xf); | |
664 | *p++ = tohex (csum & 0xf); | |
665 | ||
666 | *p = '\0'; | |
667 | ||
668 | /* Send it over and over until we get a positive ack. */ | |
669 | ||
670 | do | |
671 | { | |
e0f9f062 | 672 | if (write_prim (buf2, p - buf2) != p - buf2) |
c906108c SS |
673 | { |
674 | perror ("putpkt(write)"); | |
f88c79e6 | 675 | free (buf2); |
c906108c SS |
676 | return -1; |
677 | } | |
678 | ||
c12a5089 | 679 | if (cs.noack_mode || is_notif) |
a6f3e723 SL |
680 | { |
681 | /* Don't expect an ack then. */ | |
682 | if (remote_debug) | |
683 | { | |
bd99dc85 | 684 | if (is_notif) |
4eefa7bc | 685 | debug_printf ("putpkt (\"%s\"); [notif]\n", buf2); |
bd99dc85 | 686 | else |
4eefa7bc PA |
687 | debug_printf ("putpkt (\"%s\"); [noack mode]\n", buf2); |
688 | debug_flush (); | |
a6f3e723 SL |
689 | } |
690 | break; | |
691 | } | |
692 | ||
c906108c | 693 | if (remote_debug) |
0d62e5e8 | 694 | { |
4eefa7bc PA |
695 | debug_printf ("putpkt (\"%s\"); [looking for ack]\n", buf2); |
696 | debug_flush (); | |
0d62e5e8 | 697 | } |
0d62e5e8 | 698 | |
bc3b5632 | 699 | cc = readchar (); |
c906108c | 700 | |
bc3b5632 DE |
701 | if (cc < 0) |
702 | { | |
0a30fbc4 | 703 | free (buf2); |
c906108c SS |
704 | return -1; |
705 | } | |
0d62e5e8 | 706 | |
bc3b5632 DE |
707 | if (remote_debug) |
708 | { | |
4eefa7bc PA |
709 | debug_printf ("[received '%c' (0x%x)]\n", cc, cc); |
710 | debug_flush (); | |
bc3b5632 DE |
711 | } |
712 | ||
0d62e5e8 | 713 | /* Check for an input interrupt while we're here. */ |
0bfdf32f | 714 | if (cc == '\003' && current_thread != NULL) |
ef57601b | 715 | (*the_target->request_interrupt) (); |
c906108c | 716 | } |
bc3b5632 | 717 | while (cc != '+'); |
c906108c | 718 | |
0a30fbc4 | 719 | free (buf2); |
c906108c SS |
720 | return 1; /* Success! */ |
721 | } | |
722 | ||
bd99dc85 PA |
723 | int |
724 | putpkt_binary (char *buf, int cnt) | |
725 | { | |
726 | return putpkt_binary_1 (buf, cnt, 0); | |
727 | } | |
728 | ||
01f9e8fa DJ |
729 | /* Send a packet to the remote machine, with error checking. The data |
730 | of the packet is in BUF, and the packet should be a NUL-terminated | |
731 | string. Returns >= 0 on success, -1 otherwise. */ | |
732 | ||
733 | int | |
734 | putpkt (char *buf) | |
735 | { | |
736 | return putpkt_binary (buf, strlen (buf)); | |
737 | } | |
738 | ||
bd99dc85 PA |
739 | int |
740 | putpkt_notif (char *buf) | |
741 | { | |
742 | return putpkt_binary_1 (buf, strlen (buf), 1); | |
743 | } | |
744 | ||
c906108c SS |
745 | /* Come here when we get an input interrupt from the remote side. This |
746 | interrupt should only be active while we are waiting for the child to do | |
bc3b5632 DE |
747 | something. Thus this assumes readchar:bufcnt is 0. |
748 | About the only thing that should come through is a ^C, which | |
ef57601b | 749 | will cause us to request child interruption. */ |
c906108c SS |
750 | |
751 | static void | |
0a30fbc4 | 752 | input_interrupt (int unused) |
c906108c | 753 | { |
cf30a8e1 C |
754 | fd_set readset; |
755 | struct timeval immediate = { 0, 0 }; | |
c906108c | 756 | |
cf30a8e1 C |
757 | /* Protect against spurious interrupts. This has been observed to |
758 | be a problem under NetBSD 1.4 and 1.5. */ | |
c906108c | 759 | |
cf30a8e1 C |
760 | FD_ZERO (&readset); |
761 | FD_SET (remote_desc, &readset); | |
762 | if (select (remote_desc + 1, &readset, 0, 0, &immediate) > 0) | |
c906108c | 763 | { |
cf30a8e1 | 764 | int cc; |
fd500816 | 765 | char c = 0; |
7390519e | 766 | |
e0f9f062 | 767 | cc = read_prim (&c, 1); |
c906108c | 768 | |
fafcc06a | 769 | if (cc == 0) |
cf30a8e1 | 770 | { |
fafcc06a SDJ |
771 | fprintf (stderr, "client connection closed\n"); |
772 | return; | |
773 | } | |
f0db101d | 774 | else if (cc != 1 || c != '\003') |
fafcc06a SDJ |
775 | { |
776 | fprintf (stderr, "input_interrupt, count = %d c = %d ", cc, c); | |
777 | if (isprint (c)) | |
778 | fprintf (stderr, "('%c')\n", c); | |
779 | else | |
780 | fprintf (stderr, "('\\x%02x')\n", c & 0xff); | |
cf30a8e1 C |
781 | return; |
782 | } | |
7390519e | 783 | |
ef57601b | 784 | (*the_target->request_interrupt) (); |
cf30a8e1 | 785 | } |
c906108c | 786 | } |
7390519e PA |
787 | |
788 | /* Check if the remote side sent us an interrupt request (^C). */ | |
789 | void | |
790 | check_remote_input_interrupt_request (void) | |
791 | { | |
792 | /* This function may be called before establishing communications, | |
793 | therefore we need to validate the remote descriptor. */ | |
794 | ||
795 | if (remote_desc == INVALID_DESCRIPTOR) | |
796 | return; | |
797 | ||
798 | input_interrupt (0); | |
799 | } | |
b80864fb | 800 | |
8b207339 YQ |
801 | /* Asynchronous I/O support. SIGIO must be unblocked when waiting, |
802 | in order to accept Control-C from the client, and must be blocked | |
803 | when talking to the client. */ | |
c906108c | 804 | |
a20d5e98 | 805 | static void |
8b207339 | 806 | block_unblock_async_io (int block) |
62ea82f5 | 807 | { |
b80864fb | 808 | #ifndef USE_WIN32API |
62ea82f5 | 809 | sigset_t sigio_set; |
a20d5e98 | 810 | |
62ea82f5 DJ |
811 | sigemptyset (&sigio_set); |
812 | sigaddset (&sigio_set, SIGIO); | |
8b207339 | 813 | sigprocmask (block ? SIG_BLOCK : SIG_UNBLOCK, &sigio_set, NULL); |
b80864fb | 814 | #endif |
62ea82f5 DJ |
815 | } |
816 | ||
ac8c974e AR |
817 | #ifdef __QNX__ |
818 | static void | |
819 | nto_comctrl (int enable) | |
820 | { | |
821 | struct sigevent event; | |
822 | ||
823 | if (enable) | |
824 | { | |
825 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
826 | event.sigev_signo = SIGIO; | |
827 | event.sigev_code = 0; | |
828 | event.sigev_value.sival_ptr = NULL; | |
829 | event.sigev_priority = -1; | |
830 | ionotify (remote_desc, _NOTIFY_ACTION_POLLARM, _NOTIFY_COND_INPUT, | |
831 | &event); | |
832 | } | |
833 | else | |
834 | ionotify (remote_desc, _NOTIFY_ACTION_POLL, _NOTIFY_COND_INPUT, NULL); | |
835 | } | |
836 | #endif /* __QNX__ */ | |
837 | ||
838 | ||
fd500816 DJ |
839 | /* Current state of asynchronous I/O. */ |
840 | static int async_io_enabled; | |
841 | ||
842 | /* Enable asynchronous I/O. */ | |
c906108c | 843 | void |
fba45db2 | 844 | enable_async_io (void) |
c906108c | 845 | { |
fd500816 DJ |
846 | if (async_io_enabled) |
847 | return; | |
848 | ||
8b207339 YQ |
849 | block_unblock_async_io (0); |
850 | ||
fd500816 | 851 | async_io_enabled = 1; |
ac8c974e AR |
852 | #ifdef __QNX__ |
853 | nto_comctrl (1); | |
854 | #endif /* __QNX__ */ | |
c906108c SS |
855 | } |
856 | ||
fd500816 | 857 | /* Disable asynchronous I/O. */ |
c906108c | 858 | void |
fba45db2 | 859 | disable_async_io (void) |
c906108c | 860 | { |
fd500816 DJ |
861 | if (!async_io_enabled) |
862 | return; | |
863 | ||
8b207339 YQ |
864 | block_unblock_async_io (1); |
865 | ||
fd500816 | 866 | async_io_enabled = 0; |
ac8c974e AR |
867 | #ifdef __QNX__ |
868 | nto_comctrl (0); | |
869 | #endif /* __QNX__ */ | |
870 | ||
c906108c SS |
871 | } |
872 | ||
a20d5e98 DJ |
873 | void |
874 | initialize_async_io (void) | |
875 | { | |
8b207339 | 876 | /* Make sure that async I/O starts blocked. */ |
a20d5e98 DJ |
877 | async_io_enabled = 1; |
878 | disable_async_io (); | |
879 | ||
8b207339 YQ |
880 | /* Install the signal handler. */ |
881 | #ifndef USE_WIN32API | |
882 | signal (SIGIO, input_interrupt); | |
883 | #endif | |
a20d5e98 DJ |
884 | } |
885 | ||
24b066ba DE |
886 | /* Internal buffer used by readchar. |
887 | These are global to readchar because reschedule_remote needs to be | |
888 | able to tell whether the buffer is empty. */ | |
889 | ||
890 | static unsigned char readchar_buf[BUFSIZ]; | |
891 | static int readchar_bufcnt = 0; | |
892 | static unsigned char *readchar_bufp; | |
893 | ||
c906108c SS |
894 | /* Returns next char from remote GDB. -1 if error. */ |
895 | ||
896 | static int | |
fba45db2 | 897 | readchar (void) |
c906108c | 898 | { |
24b066ba | 899 | int ch; |
c906108c | 900 | |
24b066ba DE |
901 | if (readchar_bufcnt == 0) |
902 | { | |
e0f9f062 | 903 | readchar_bufcnt = read_prim (readchar_buf, sizeof (readchar_buf)); |
c906108c | 904 | |
24b066ba DE |
905 | if (readchar_bufcnt <= 0) |
906 | { | |
907 | if (readchar_bufcnt == 0) | |
fddedbe6 PA |
908 | { |
909 | if (remote_debug) | |
4eefa7bc | 910 | debug_printf ("readchar: Got EOF\n"); |
fddedbe6 | 911 | } |
24b066ba DE |
912 | else |
913 | perror ("readchar"); | |
c906108c | 914 | |
24b066ba DE |
915 | return -1; |
916 | } | |
c906108c | 917 | |
24b066ba | 918 | readchar_bufp = readchar_buf; |
c906108c SS |
919 | } |
920 | ||
24b066ba DE |
921 | readchar_bufcnt--; |
922 | ch = *readchar_bufp++; | |
923 | reschedule (); | |
924 | return ch; | |
925 | } | |
926 | ||
927 | /* Reset the readchar state machine. */ | |
928 | ||
929 | static void | |
930 | reset_readchar (void) | |
931 | { | |
932 | readchar_bufcnt = 0; | |
933 | if (readchar_callback != NOT_SCHEDULED) | |
934 | { | |
935 | delete_callback_event (readchar_callback); | |
936 | readchar_callback = NOT_SCHEDULED; | |
937 | } | |
938 | } | |
939 | ||
940 | /* Process remaining data in readchar_buf. */ | |
941 | ||
942 | static int | |
943 | process_remaining (void *context) | |
944 | { | |
945 | int res; | |
946 | ||
947 | /* This is a one-shot event. */ | |
948 | readchar_callback = NOT_SCHEDULED; | |
949 | ||
950 | if (readchar_bufcnt > 0) | |
951 | res = handle_serial_event (0, NULL); | |
952 | else | |
953 | res = 0; | |
954 | ||
955 | return res; | |
956 | } | |
957 | ||
958 | /* If there is still data in the buffer, queue another event to process it, | |
959 | we can't sleep in select yet. */ | |
960 | ||
961 | static void | |
962 | reschedule (void) | |
963 | { | |
964 | if (readchar_bufcnt > 0 && readchar_callback == NOT_SCHEDULED) | |
965 | readchar_callback = append_callback_event (process_remaining, NULL); | |
c906108c SS |
966 | } |
967 | ||
968 | /* Read a packet from the remote machine, with error checking, | |
969 | and store it in BUF. Returns length of packet, or negative if error. */ | |
970 | ||
971 | int | |
fba45db2 | 972 | getpkt (char *buf) |
c906108c | 973 | { |
c12a5089 | 974 | client_state &cs = get_client_state (); |
c906108c SS |
975 | char *bp; |
976 | unsigned char csum, c1, c2; | |
977 | int c; | |
978 | ||
979 | while (1) | |
980 | { | |
981 | csum = 0; | |
982 | ||
983 | while (1) | |
984 | { | |
985 | c = readchar (); | |
5a0dd67a YQ |
986 | |
987 | /* The '\003' may appear before or after each packet, so | |
988 | check for an input interrupt. */ | |
989 | if (c == '\003') | |
990 | { | |
991 | (*the_target->request_interrupt) (); | |
992 | continue; | |
993 | } | |
994 | ||
c906108c SS |
995 | if (c == '$') |
996 | break; | |
997 | if (remote_debug) | |
0d62e5e8 | 998 | { |
4eefa7bc PA |
999 | debug_printf ("[getpkt: discarding char '%c']\n", c); |
1000 | debug_flush (); | |
0d62e5e8 DJ |
1001 | } |
1002 | ||
c906108c SS |
1003 | if (c < 0) |
1004 | return -1; | |
1005 | } | |
1006 | ||
1007 | bp = buf; | |
1008 | while (1) | |
1009 | { | |
1010 | c = readchar (); | |
1011 | if (c < 0) | |
1012 | return -1; | |
1013 | if (c == '#') | |
1014 | break; | |
1015 | *bp++ = c; | |
1016 | csum += c; | |
1017 | } | |
1018 | *bp = 0; | |
1019 | ||
1020 | c1 = fromhex (readchar ()); | |
1021 | c2 = fromhex (readchar ()); | |
c5aa993b | 1022 | |
c906108c SS |
1023 | if (csum == (c1 << 4) + c2) |
1024 | break; | |
1025 | ||
c12a5089 | 1026 | if (cs.noack_mode) |
a6f3e723 | 1027 | { |
493e2a69 MS |
1028 | fprintf (stderr, |
1029 | "Bad checksum, sentsum=0x%x, csum=0x%x, " | |
1030 | "buf=%s [no-ack-mode, Bad medium?]\n", | |
a6f3e723 SL |
1031 | (c1 << 4) + c2, csum, buf); |
1032 | /* Not much we can do, GDB wasn't expecting an ack/nac. */ | |
1033 | break; | |
1034 | } | |
1035 | ||
c906108c SS |
1036 | fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n", |
1037 | (c1 << 4) + c2, csum, buf); | |
e0f9f062 | 1038 | if (write_prim ("-", 1) != 1) |
e581f2b4 | 1039 | return -1; |
c906108c SS |
1040 | } |
1041 | ||
c12a5089 | 1042 | if (!cs.noack_mode) |
0d62e5e8 | 1043 | { |
a6f3e723 SL |
1044 | if (remote_debug) |
1045 | { | |
4eefa7bc PA |
1046 | debug_printf ("getpkt (\"%s\"); [sending ack] \n", buf); |
1047 | debug_flush (); | |
a6f3e723 | 1048 | } |
c906108c | 1049 | |
e0f9f062 | 1050 | if (write_prim ("+", 1) != 1) |
e581f2b4 | 1051 | return -1; |
c906108c | 1052 | |
a6f3e723 SL |
1053 | if (remote_debug) |
1054 | { | |
4eefa7bc PA |
1055 | debug_printf ("[sent ack]\n"); |
1056 | debug_flush (); | |
a6f3e723 | 1057 | } |
0d62e5e8 | 1058 | } |
86b1f9c5 PM |
1059 | else |
1060 | { | |
1061 | if (remote_debug) | |
1062 | { | |
4eefa7bc PA |
1063 | debug_printf ("getpkt (\"%s\"); [no ack sent] \n", buf); |
1064 | debug_flush (); | |
86b1f9c5 PM |
1065 | } |
1066 | } | |
0d62e5e8 | 1067 | |
18879fef YQ |
1068 | /* The readchar above may have already read a '\003' out of the socket |
1069 | and moved it to the local buffer. For example, when GDB sends | |
1070 | vCont;c immediately followed by interrupt (see | |
1071 | gdb.base/interrupt-noterm.exp). As soon as we see the vCont;c, we'll | |
1072 | resume the inferior and wait. Since we've already moved the '\003' | |
1073 | to the local buffer, SIGIO won't help. In that case, if we don't | |
1074 | check for interrupt after the vCont;c packet, the interrupt character | |
1075 | would stay in the buffer unattended until after the next (unrelated) | |
1076 | stop. */ | |
1077 | while (readchar_bufcnt > 0 && *readchar_bufp == '\003') | |
1078 | { | |
1079 | /* Consume the interrupt character in the buffer. */ | |
1080 | readchar (); | |
1081 | (*the_target->request_interrupt) (); | |
1082 | } | |
1083 | ||
c906108c SS |
1084 | return bp - buf; |
1085 | } | |
1086 | ||
1087 | void | |
fba45db2 | 1088 | write_ok (char *buf) |
c906108c SS |
1089 | { |
1090 | buf[0] = 'O'; | |
1091 | buf[1] = 'K'; | |
1092 | buf[2] = '\0'; | |
1093 | } | |
1094 | ||
1095 | void | |
fba45db2 | 1096 | write_enn (char *buf) |
c906108c | 1097 | { |
c89dc5d4 | 1098 | /* Some day, we should define the meanings of the error codes... */ |
c906108c | 1099 | buf[0] = 'E'; |
c89dc5d4 DJ |
1100 | buf[1] = '0'; |
1101 | buf[2] = '1'; | |
c906108c SS |
1102 | buf[3] = '\0'; |
1103 | } | |
1104 | ||
0fb4aa4b PA |
1105 | #endif |
1106 | ||
0fb4aa4b | 1107 | #ifndef IN_PROCESS_AGENT |
c906108c | 1108 | |
c906108c | 1109 | static char * |
442ea881 | 1110 | outreg (struct regcache *regcache, int regno, char *buf) |
c906108c | 1111 | { |
5c44784c JM |
1112 | if ((regno >> 12) != 0) |
1113 | *buf++ = tohex ((regno >> 12) & 0xf); | |
1114 | if ((regno >> 8) != 0) | |
1115 | *buf++ = tohex ((regno >> 8) & 0xf); | |
1116 | *buf++ = tohex ((regno >> 4) & 0xf); | |
c906108c SS |
1117 | *buf++ = tohex (regno & 0xf); |
1118 | *buf++ = ':'; | |
442ea881 | 1119 | collect_register_as_string (regcache, regno, buf); |
3aee8918 | 1120 | buf += 2 * register_size (regcache->tdesc, regno); |
c906108c SS |
1121 | *buf++ = ';'; |
1122 | ||
1123 | return buf; | |
1124 | } | |
1125 | ||
1126 | void | |
95954743 | 1127 | prepare_resume_reply (char *buf, ptid_t ptid, |
5b1c542e | 1128 | struct target_waitstatus *status) |
c906108c | 1129 | { |
c12a5089 | 1130 | client_state &cs = get_client_state (); |
5b1c542e | 1131 | if (debug_threads) |
87ce2a04 DE |
1132 | debug_printf ("Writing resume reply for %s:%d\n", |
1133 | target_pid_to_str (ptid), status->kind); | |
c906108c | 1134 | |
5b1c542e | 1135 | switch (status->kind) |
c906108c | 1136 | { |
5b1c542e | 1137 | case TARGET_WAITKIND_STOPPED: |
de0d863e | 1138 | case TARGET_WAITKIND_FORKED: |
c269dbdb | 1139 | case TARGET_WAITKIND_VFORKED: |
8228463c | 1140 | case TARGET_WAITKIND_VFORK_DONE: |
94585166 | 1141 | case TARGET_WAITKIND_EXECD: |
65706a29 | 1142 | case TARGET_WAITKIND_THREAD_CREATED: |
82075af2 JS |
1143 | case TARGET_WAITKIND_SYSCALL_ENTRY: |
1144 | case TARGET_WAITKIND_SYSCALL_RETURN: | |
5b1c542e | 1145 | { |
0bfdf32f | 1146 | struct thread_info *saved_thread; |
5b1c542e | 1147 | const char **regp; |
442ea881 | 1148 | struct regcache *regcache; |
e013ee27 | 1149 | |
c12a5089 | 1150 | if ((status->kind == TARGET_WAITKIND_FORKED && cs.report_fork_events) |
80e24d09 | 1151 | || (status->kind == TARGET_WAITKIND_VFORKED |
c12a5089 | 1152 | && cs.report_vfork_events)) |
de0d863e DB |
1153 | { |
1154 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
c269dbdb DB |
1155 | const char *event = (status->kind == TARGET_WAITKIND_FORKED |
1156 | ? "fork" : "vfork"); | |
de0d863e | 1157 | |
c269dbdb | 1158 | sprintf (buf, "T%02x%s:", signal, event); |
de0d863e DB |
1159 | buf += strlen (buf); |
1160 | buf = write_ptid (buf, status->value.related_pid); | |
1161 | strcat (buf, ";"); | |
1162 | } | |
80e24d09 | 1163 | else if (status->kind == TARGET_WAITKIND_VFORK_DONE |
c12a5089 | 1164 | && cs.report_vfork_events) |
8228463c PA |
1165 | { |
1166 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1167 | ||
1168 | sprintf (buf, "T%02xvforkdone:;", signal); | |
1169 | } | |
c12a5089 | 1170 | else if (status->kind == TARGET_WAITKIND_EXECD && cs.report_exec_events) |
94585166 DB |
1171 | { |
1172 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1173 | const char *event = "exec"; | |
1174 | char hexified_pathname[PATH_MAX * 2]; | |
1175 | ||
1176 | sprintf (buf, "T%02x%s:", signal, event); | |
1177 | buf += strlen (buf); | |
1178 | ||
1179 | /* Encode pathname to hexified format. */ | |
1180 | bin2hex ((const gdb_byte *) status->value.execd_pathname, | |
1181 | hexified_pathname, | |
1182 | strlen (status->value.execd_pathname)); | |
1183 | ||
1184 | sprintf (buf, "%s;", hexified_pathname); | |
1185 | xfree (status->value.execd_pathname); | |
1186 | status->value.execd_pathname = NULL; | |
1187 | buf += strlen (buf); | |
1188 | } | |
65706a29 | 1189 | else if (status->kind == TARGET_WAITKIND_THREAD_CREATED |
c12a5089 | 1190 | && cs.report_thread_events) |
65706a29 PA |
1191 | { |
1192 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1193 | ||
1194 | sprintf (buf, "T%02xcreate:;", signal); | |
1195 | } | |
82075af2 JS |
1196 | else if (status->kind == TARGET_WAITKIND_SYSCALL_ENTRY |
1197 | || status->kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
1198 | { | |
1199 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1200 | const char *event = (status->kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
1201 | ? "syscall_entry" : "syscall_return"); | |
1202 | ||
1203 | sprintf (buf, "T%02x%s:%x;", signal, event, | |
1204 | status->value.syscall_number); | |
1205 | } | |
de0d863e DB |
1206 | else |
1207 | sprintf (buf, "T%02x", status->value.sig); | |
1208 | ||
5b1c542e | 1209 | buf += strlen (buf); |
e013ee27 | 1210 | |
0bfdf32f | 1211 | saved_thread = current_thread; |
e013ee27 | 1212 | |
75352e28 | 1213 | switch_to_thread (ptid); |
e013ee27 | 1214 | |
3aee8918 PA |
1215 | regp = current_target_desc ()->expedite_regs; |
1216 | ||
0bfdf32f | 1217 | regcache = get_thread_regcache (current_thread, 1); |
442ea881 | 1218 | |
5b1c542e PA |
1219 | if (the_target->stopped_by_watchpoint != NULL |
1220 | && (*the_target->stopped_by_watchpoint) ()) | |
1221 | { | |
1222 | CORE_ADDR addr; | |
1223 | int i; | |
c906108c | 1224 | |
29f9a567 | 1225 | memcpy (buf, "watch:", 6); |
5b1c542e | 1226 | buf += 6; |
0d62e5e8 | 1227 | |
5b1c542e | 1228 | addr = (*the_target->stopped_data_address) (); |
255e7678 | 1229 | |
5b1c542e PA |
1230 | /* Convert each byte of the address into two hexadecimal |
1231 | chars. Note that we take sizeof (void *) instead of | |
1232 | sizeof (addr); this is to avoid sending a 64-bit | |
1233 | address to a 32-bit GDB. */ | |
1234 | for (i = sizeof (void *) * 2; i > 0; i--) | |
1235 | *buf++ = tohex ((addr >> (i - 1) * 4) & 0xf); | |
1236 | *buf++ = ';'; | |
1237 | } | |
c12a5089 | 1238 | else if (cs.swbreak_feature && target_stopped_by_sw_breakpoint ()) |
1ec68e26 PA |
1239 | { |
1240 | sprintf (buf, "swbreak:;"); | |
1241 | buf += strlen (buf); | |
1242 | } | |
c12a5089 | 1243 | else if (cs.hwbreak_feature && target_stopped_by_hw_breakpoint ()) |
1ec68e26 PA |
1244 | { |
1245 | sprintf (buf, "hwbreak:;"); | |
1246 | buf += strlen (buf); | |
1247 | } | |
5b1c542e PA |
1248 | |
1249 | while (*regp) | |
1250 | { | |
3aee8918 | 1251 | buf = outreg (regcache, find_regno (regcache->tdesc, *regp), buf); |
5b1c542e PA |
1252 | regp ++; |
1253 | } | |
5472f405 | 1254 | *buf = '\0'; |
5b1c542e PA |
1255 | |
1256 | /* Formerly, if the debugger had not used any thread features | |
1257 | we would not burden it with a thread status response. This | |
1258 | was for the benefit of GDB 4.13 and older. However, in | |
1259 | recent GDB versions the check (``if (cont_thread != 0)'') | |
1260 | does not have the desired effect because of sillyness in | |
1261 | the way that the remote protocol handles specifying a | |
1262 | thread. Since thread support relies on qSymbol support | |
1263 | anyway, assume GDB can handle threads. */ | |
1264 | ||
1265 | if (using_threads && !disable_packet_Tthread) | |
1266 | { | |
1267 | /* This if (1) ought to be unnecessary. But remote_wait | |
1268 | in GDB will claim this event belongs to inferior_ptid | |
1269 | if we do not specify a thread, and there's no way for | |
1270 | gdbserver to know what inferior_ptid is. */ | |
d7e15655 | 1271 | if (1 || cs.general_thread != ptid) |
5b1c542e | 1272 | { |
dc146f7c | 1273 | int core = -1; |
bd99dc85 PA |
1274 | /* In non-stop, don't change the general thread behind |
1275 | GDB's back. */ | |
1276 | if (!non_stop) | |
c12a5089 | 1277 | cs.general_thread = ptid; |
95954743 PA |
1278 | sprintf (buf, "thread:"); |
1279 | buf += strlen (buf); | |
1280 | buf = write_ptid (buf, ptid); | |
1281 | strcat (buf, ";"); | |
5b1c542e | 1282 | buf += strlen (buf); |
dc146f7c | 1283 | |
3e10640f YQ |
1284 | core = target_core_of_thread (ptid); |
1285 | ||
dc146f7c VP |
1286 | if (core != -1) |
1287 | { | |
1288 | sprintf (buf, "core:"); | |
1289 | buf += strlen (buf); | |
1290 | sprintf (buf, "%x", core); | |
1291 | strcat (buf, ";"); | |
1292 | buf += strlen (buf); | |
1293 | } | |
5b1c542e PA |
1294 | } |
1295 | } | |
1296 | ||
1297 | if (dlls_changed) | |
1298 | { | |
1299 | strcpy (buf, "library:;"); | |
1300 | buf += strlen (buf); | |
1301 | dlls_changed = 0; | |
1302 | } | |
1303 | ||
0bfdf32f | 1304 | current_thread = saved_thread; |
5b1c542e PA |
1305 | } |
1306 | break; | |
1307 | case TARGET_WAITKIND_EXITED: | |
c12a5089 | 1308 | if (cs.multi_process) |
95954743 | 1309 | sprintf (buf, "W%x;process:%x", |
e99b03dc | 1310 | status->value.integer, ptid.pid ()); |
95954743 PA |
1311 | else |
1312 | sprintf (buf, "W%02x", status->value.integer); | |
5b1c542e PA |
1313 | break; |
1314 | case TARGET_WAITKIND_SIGNALLED: | |
c12a5089 | 1315 | if (cs.multi_process) |
95954743 | 1316 | sprintf (buf, "X%x;process:%x", |
e99b03dc | 1317 | status->value.sig, ptid.pid ()); |
95954743 PA |
1318 | else |
1319 | sprintf (buf, "X%02x", status->value.sig); | |
5b1c542e | 1320 | break; |
65706a29 PA |
1321 | case TARGET_WAITKIND_THREAD_EXITED: |
1322 | sprintf (buf, "w%x;", status->value.integer); | |
1323 | buf += strlen (buf); | |
1324 | buf = write_ptid (buf, ptid); | |
1325 | break; | |
f2faf941 PA |
1326 | case TARGET_WAITKIND_NO_RESUMED: |
1327 | sprintf (buf, "N"); | |
1328 | break; | |
5b1c542e PA |
1329 | default: |
1330 | error ("unhandled waitkind"); | |
1331 | break; | |
c906108c | 1332 | } |
c906108c SS |
1333 | } |
1334 | ||
1335 | void | |
fba45db2 | 1336 | decode_m_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr) |
c906108c SS |
1337 | { |
1338 | int i = 0, j = 0; | |
1339 | char ch; | |
1340 | *mem_addr_ptr = *len_ptr = 0; | |
1341 | ||
1342 | while ((ch = from[i++]) != ',') | |
1343 | { | |
1344 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1345 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1346 | } | |
1347 | ||
1348 | for (j = 0; j < 4; j++) | |
1349 | { | |
1350 | if ((ch = from[i++]) == 0) | |
1351 | break; | |
1352 | *len_ptr = *len_ptr << 4; | |
1353 | *len_ptr |= fromhex (ch) & 0x0f; | |
1354 | } | |
1355 | } | |
1356 | ||
1357 | void | |
fba45db2 | 1358 | decode_M_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr, |
fa593d66 | 1359 | unsigned char **to_p) |
c906108c SS |
1360 | { |
1361 | int i = 0; | |
1362 | char ch; | |
1363 | *mem_addr_ptr = *len_ptr = 0; | |
1364 | ||
1365 | while ((ch = from[i++]) != ',') | |
1366 | { | |
1367 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1368 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1369 | } | |
1370 | ||
1371 | while ((ch = from[i++]) != ':') | |
1372 | { | |
1373 | *len_ptr = *len_ptr << 4; | |
1374 | *len_ptr |= fromhex (ch) & 0x0f; | |
1375 | } | |
1376 | ||
fa593d66 | 1377 | if (*to_p == NULL) |
224c3ddb | 1378 | *to_p = (unsigned char *) xmalloc (*len_ptr); |
fa593d66 | 1379 | |
a7191e8b | 1380 | hex2bin (&from[i++], *to_p, *len_ptr); |
c906108c | 1381 | } |
2f2893d9 | 1382 | |
01f9e8fa DJ |
1383 | int |
1384 | decode_X_packet (char *from, int packet_len, CORE_ADDR *mem_addr_ptr, | |
fa593d66 | 1385 | unsigned int *len_ptr, unsigned char **to_p) |
01f9e8fa DJ |
1386 | { |
1387 | int i = 0; | |
1388 | char ch; | |
1389 | *mem_addr_ptr = *len_ptr = 0; | |
1390 | ||
1391 | while ((ch = from[i++]) != ',') | |
1392 | { | |
1393 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1394 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1395 | } | |
1396 | ||
1397 | while ((ch = from[i++]) != ':') | |
1398 | { | |
1399 | *len_ptr = *len_ptr << 4; | |
1400 | *len_ptr |= fromhex (ch) & 0x0f; | |
1401 | } | |
1402 | ||
fa593d66 | 1403 | if (*to_p == NULL) |
224c3ddb | 1404 | *to_p = (unsigned char *) xmalloc (*len_ptr); |
fa593d66 | 1405 | |
01f9e8fa | 1406 | if (remote_unescape_input ((const gdb_byte *) &from[i], packet_len - i, |
fa593d66 | 1407 | *to_p, *len_ptr) != *len_ptr) |
01f9e8fa DJ |
1408 | return -1; |
1409 | ||
1410 | return 0; | |
1411 | } | |
1412 | ||
0e7f50da | 1413 | /* Decode a qXfer write request. */ |
d08aafef | 1414 | |
0e7f50da | 1415 | int |
d08aafef | 1416 | decode_xfer_write (char *buf, int packet_len, CORE_ADDR *offset, |
0e7f50da UW |
1417 | unsigned int *len, unsigned char *data) |
1418 | { | |
1419 | char ch; | |
d08aafef | 1420 | char *b = buf; |
0e7f50da UW |
1421 | |
1422 | /* Extract the offset. */ | |
1423 | *offset = 0; | |
1424 | while ((ch = *buf++) != ':') | |
1425 | { | |
1426 | *offset = *offset << 4; | |
1427 | *offset |= fromhex (ch) & 0x0f; | |
1428 | } | |
1429 | ||
1430 | /* Get encoded data. */ | |
d08aafef | 1431 | packet_len -= buf - b; |
0e7f50da UW |
1432 | *len = remote_unescape_input ((const gdb_byte *) buf, packet_len, |
1433 | data, packet_len); | |
1434 | return 0; | |
1435 | } | |
1436 | ||
08388c79 DE |
1437 | /* Decode the parameters of a qSearch:memory packet. */ |
1438 | ||
1439 | int | |
1440 | decode_search_memory_packet (const char *buf, int packet_len, | |
1441 | CORE_ADDR *start_addrp, | |
1442 | CORE_ADDR *search_space_lenp, | |
1443 | gdb_byte *pattern, unsigned int *pattern_lenp) | |
1444 | { | |
1445 | const char *p = buf; | |
1446 | ||
1447 | p = decode_address_to_semicolon (start_addrp, p); | |
1448 | p = decode_address_to_semicolon (search_space_lenp, p); | |
1449 | packet_len -= p - buf; | |
1450 | *pattern_lenp = remote_unescape_input ((const gdb_byte *) p, packet_len, | |
1451 | pattern, packet_len); | |
1452 | return 0; | |
1453 | } | |
1454 | ||
95954743 PA |
1455 | static void |
1456 | free_sym_cache (struct sym_cache *sym) | |
1457 | { | |
1458 | if (sym != NULL) | |
1459 | { | |
1460 | free (sym->name); | |
1461 | free (sym); | |
1462 | } | |
1463 | } | |
1464 | ||
1465 | void | |
1466 | clear_symbol_cache (struct sym_cache **symcache_p) | |
1467 | { | |
1468 | struct sym_cache *sym, *next; | |
1469 | ||
1470 | /* Check the cache first. */ | |
1471 | for (sym = *symcache_p; sym; sym = next) | |
1472 | { | |
1473 | next = sym->next; | |
1474 | free_sym_cache (sym); | |
1475 | } | |
1476 | ||
1477 | *symcache_p = NULL; | |
1478 | } | |
1479 | ||
9836d6ea PA |
1480 | /* Get the address of NAME, and return it in ADDRP if found. if |
1481 | MAY_ASK_GDB is false, assume symbol cache misses are failures. | |
fd500816 DJ |
1482 | Returns 1 if the symbol is found, 0 if it is not, -1 on error. */ |
1483 | ||
2f2893d9 | 1484 | int |
9836d6ea | 1485 | look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb) |
2f2893d9 | 1486 | { |
c12a5089 | 1487 | client_state &cs = get_client_state (); |
28170b88 | 1488 | char *p, *q; |
2f2893d9 | 1489 | int len; |
fd500816 | 1490 | struct sym_cache *sym; |
95954743 PA |
1491 | struct process_info *proc; |
1492 | ||
1493 | proc = current_process (); | |
fd500816 DJ |
1494 | |
1495 | /* Check the cache first. */ | |
95954743 | 1496 | for (sym = proc->symbol_cache; sym; sym = sym->next) |
fd500816 DJ |
1497 | if (strcmp (name, sym->name) == 0) |
1498 | { | |
1499 | *addrp = sym->addr; | |
1500 | return 1; | |
1501 | } | |
2f2893d9 | 1502 | |
9836d6ea PA |
1503 | /* It might not be an appropriate time to look up a symbol, |
1504 | e.g. while we're trying to fetch registers. */ | |
1505 | if (!may_ask_gdb) | |
ea025f5f DJ |
1506 | return 0; |
1507 | ||
2f2893d9 | 1508 | /* Send the request. */ |
c12a5089 SC |
1509 | strcpy (cs.own_buf, "qSymbol:"); |
1510 | bin2hex ((const gdb_byte *) name, cs.own_buf + strlen ("qSymbol:"), | |
971dc0b8 | 1511 | strlen (name)); |
c12a5089 | 1512 | if (putpkt (cs.own_buf) < 0) |
2f2893d9 DJ |
1513 | return -1; |
1514 | ||
1515 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
c12a5089 | 1516 | len = getpkt (cs.own_buf); |
2f2893d9 DJ |
1517 | if (len < 0) |
1518 | return -1; | |
1519 | ||
2bbe3cc1 DJ |
1520 | /* We ought to handle pretty much any packet at this point while we |
1521 | wait for the qSymbol "response". That requires re-entering the | |
1522 | main loop. For now, this is an adequate approximation; allow | |
28170b88 MK |
1523 | GDB to read from memory and handle 'v' packets (for vFile transfers) |
1524 | while it figures out the address of the symbol. */ | |
1525 | while (1) | |
2bbe3cc1 | 1526 | { |
c12a5089 | 1527 | if (cs.own_buf[0] == 'm') |
28170b88 MK |
1528 | { |
1529 | CORE_ADDR mem_addr; | |
1530 | unsigned char *mem_buf; | |
1531 | unsigned int mem_len; | |
1532 | ||
c12a5089 | 1533 | decode_m_packet (&cs.own_buf[1], &mem_addr, &mem_len); |
28170b88 MK |
1534 | mem_buf = (unsigned char *) xmalloc (mem_len); |
1535 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) | |
c12a5089 | 1536 | bin2hex (mem_buf, cs.own_buf, mem_len); |
28170b88 | 1537 | else |
c12a5089 | 1538 | write_enn (cs.own_buf); |
28170b88 | 1539 | free (mem_buf); |
c12a5089 | 1540 | if (putpkt (cs.own_buf) < 0) |
28170b88 MK |
1541 | return -1; |
1542 | } | |
c12a5089 | 1543 | else if (cs.own_buf[0] == 'v') |
28170b88 MK |
1544 | { |
1545 | int new_len = -1; | |
c12a5089 | 1546 | handle_v_requests (cs.own_buf, len, &new_len); |
28170b88 | 1547 | if (new_len != -1) |
c12a5089 | 1548 | putpkt_binary (cs.own_buf, new_len); |
28170b88 | 1549 | else |
c12a5089 | 1550 | putpkt (cs.own_buf); |
28170b88 | 1551 | } |
2bbe3cc1 | 1552 | else |
28170b88 | 1553 | break; |
c12a5089 | 1554 | len = getpkt (cs.own_buf); |
2bbe3cc1 DJ |
1555 | if (len < 0) |
1556 | return -1; | |
1557 | } | |
1b3f6016 | 1558 | |
c12a5089 | 1559 | if (!startswith (cs.own_buf, "qSymbol:")) |
2f2893d9 | 1560 | { |
422186a9 | 1561 | warning ("Malformed response to qSymbol, ignoring: %s", cs.own_buf); |
2f2893d9 DJ |
1562 | return -1; |
1563 | } | |
1564 | ||
c12a5089 | 1565 | p = cs.own_buf + strlen ("qSymbol:"); |
2f2893d9 DJ |
1566 | q = p; |
1567 | while (*q && *q != ':') | |
1568 | q++; | |
1569 | ||
1570 | /* Make sure we found a value for the symbol. */ | |
1571 | if (p == q || *q == '\0') | |
1572 | return 0; | |
1573 | ||
1574 | decode_address (addrp, p, q - p); | |
fd500816 DJ |
1575 | |
1576 | /* Save the symbol in our cache. */ | |
8d749320 | 1577 | sym = XNEW (struct sym_cache); |
bca929d3 | 1578 | sym->name = xstrdup (name); |
fd500816 | 1579 | sym->addr = *addrp; |
95954743 PA |
1580 | sym->next = proc->symbol_cache; |
1581 | proc->symbol_cache = sym; | |
fd500816 | 1582 | |
2f2893d9 DJ |
1583 | return 1; |
1584 | } | |
c74d0ad8 | 1585 | |
fa593d66 PA |
1586 | /* Relocate an instruction to execute at a different address. OLDLOC |
1587 | is the address in the inferior memory where the instruction to | |
1588 | relocate is currently at. On input, TO points to the destination | |
1589 | where we want the instruction to be copied (and possibly adjusted) | |
1590 | to. On output, it points to one past the end of the resulting | |
1591 | instruction(s). The effect of executing the instruction at TO | |
86a30030 | 1592 | shall be the same as if executing it at OLDLOC. For example, call |
fa593d66 PA |
1593 | instructions that implicitly push the return address on the stack |
1594 | should be adjusted to return to the instruction after OLDLOC; | |
1595 | relative branches, and other PC-relative instructions need the | |
1596 | offset adjusted; etc. Returns 0 on success, -1 on failure. */ | |
1597 | ||
1598 | int | |
1599 | relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc) | |
1600 | { | |
c12a5089 | 1601 | client_state &cs = get_client_state (); |
fa593d66 PA |
1602 | int len; |
1603 | ULONGEST written = 0; | |
1604 | ||
1605 | /* Send the request. */ | |
c12a5089 | 1606 | sprintf (cs.own_buf, "qRelocInsn:%s;%s", paddress (oldloc), |
fa593d66 | 1607 | paddress (*to)); |
c12a5089 | 1608 | if (putpkt (cs.own_buf) < 0) |
fa593d66 PA |
1609 | return -1; |
1610 | ||
1611 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
c12a5089 | 1612 | len = getpkt (cs.own_buf); |
fa593d66 PA |
1613 | if (len < 0) |
1614 | return -1; | |
1615 | ||
1616 | /* We ought to handle pretty much any packet at this point while we | |
1617 | wait for the qRelocInsn "response". That requires re-entering | |
1618 | the main loop. For now, this is an adequate approximation; allow | |
1619 | GDB to access memory. */ | |
c12a5089 | 1620 | while (cs.own_buf[0] == 'm' || cs.own_buf[0] == 'M' || cs.own_buf[0] == 'X') |
fa593d66 PA |
1621 | { |
1622 | CORE_ADDR mem_addr; | |
1623 | unsigned char *mem_buf = NULL; | |
1624 | unsigned int mem_len; | |
1625 | ||
c12a5089 | 1626 | if (cs.own_buf[0] == 'm') |
fa593d66 | 1627 | { |
c12a5089 | 1628 | decode_m_packet (&cs.own_buf[1], &mem_addr, &mem_len); |
224c3ddb | 1629 | mem_buf = (unsigned char *) xmalloc (mem_len); |
fa593d66 | 1630 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) |
c12a5089 | 1631 | bin2hex (mem_buf, cs.own_buf, mem_len); |
fa593d66 | 1632 | else |
c12a5089 | 1633 | write_enn (cs.own_buf); |
fa593d66 | 1634 | } |
c12a5089 | 1635 | else if (cs.own_buf[0] == 'X') |
fa593d66 | 1636 | { |
c12a5089 | 1637 | if (decode_X_packet (&cs.own_buf[1], len - 1, &mem_addr, |
fa593d66 PA |
1638 | &mem_len, &mem_buf) < 0 |
1639 | || write_inferior_memory (mem_addr, mem_buf, mem_len) != 0) | |
c12a5089 | 1640 | write_enn (cs.own_buf); |
fa593d66 | 1641 | else |
c12a5089 | 1642 | write_ok (cs.own_buf); |
fa593d66 PA |
1643 | } |
1644 | else | |
1645 | { | |
c12a5089 | 1646 | decode_M_packet (&cs.own_buf[1], &mem_addr, &mem_len, &mem_buf); |
fa593d66 | 1647 | if (write_inferior_memory (mem_addr, mem_buf, mem_len) == 0) |
c12a5089 | 1648 | write_ok (cs.own_buf); |
fa593d66 | 1649 | else |
c12a5089 | 1650 | write_enn (cs.own_buf); |
fa593d66 PA |
1651 | } |
1652 | free (mem_buf); | |
c12a5089 | 1653 | if (putpkt (cs.own_buf) < 0) |
fa593d66 | 1654 | return -1; |
c12a5089 | 1655 | len = getpkt (cs.own_buf); |
fa593d66 PA |
1656 | if (len < 0) |
1657 | return -1; | |
1658 | } | |
1659 | ||
c12a5089 | 1660 | if (cs.own_buf[0] == 'E') |
fa593d66 | 1661 | { |
422186a9 | 1662 | warning ("An error occurred while relocating an instruction: %s", |
c12a5089 | 1663 | cs.own_buf); |
fa593d66 PA |
1664 | return -1; |
1665 | } | |
1666 | ||
c12a5089 | 1667 | if (!startswith (cs.own_buf, "qRelocInsn:")) |
fa593d66 | 1668 | { |
422186a9 | 1669 | warning ("Malformed response to qRelocInsn, ignoring: %s", |
c12a5089 | 1670 | cs.own_buf); |
fa593d66 PA |
1671 | return -1; |
1672 | } | |
1673 | ||
c12a5089 | 1674 | unpack_varlen_hex (cs.own_buf + strlen ("qRelocInsn:"), &written); |
fa593d66 PA |
1675 | |
1676 | *to += written; | |
1677 | return 0; | |
1678 | } | |
1679 | ||
c74d0ad8 | 1680 | void |
bce7165d | 1681 | monitor_output (const char *msg) |
c74d0ad8 | 1682 | { |
0a822afb | 1683 | int len = strlen (msg); |
224c3ddb | 1684 | char *buf = (char *) xmalloc (len * 2 + 2); |
c74d0ad8 DJ |
1685 | |
1686 | buf[0] = 'O'; | |
971dc0b8 | 1687 | bin2hex ((const gdb_byte *) msg, buf + 1, len); |
c74d0ad8 DJ |
1688 | |
1689 | putpkt (buf); | |
1690 | free (buf); | |
1691 | } | |
255e7678 | 1692 | |
0fb4aa4b | 1693 | #endif |