Commit | Line | Data |
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c906108c | 1 | /* Remote utility routines for the remote server for GDB. |
b811d2c2 | 2 | Copyright (C) 1986-2020 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" |
f9d949fb | 26 | #include "debug.h" |
799cdc37 | 27 | #include "dll.h" |
268a13a5 TT |
28 | #include "gdbsupport/rsp-low.h" |
29 | #include "gdbsupport/netstuff.h" | |
30 | #include "gdbsupport/filestuff.h" | |
21987b9c | 31 | #include "gdbsupport/gdb-sigmask.h" |
fafcc06a | 32 | #include <ctype.h> |
b80864fb | 33 | #if HAVE_SYS_IOCTL_H |
c906108c | 34 | #include <sys/ioctl.h> |
b80864fb | 35 | #endif |
68070c10 | 36 | #if HAVE_SYS_FILE_H |
c906108c | 37 | #include <sys/file.h> |
68070c10 | 38 | #endif |
9eb1356e PA |
39 | #if HAVE_NETINET_IN_H |
40 | #include <netinet/in.h> | |
41 | #endif | |
42 | #if HAVE_SYS_SOCKET_H | |
43 | #include <sys/socket.h> | |
44 | #endif | |
b80864fb | 45 | #if HAVE_NETDB_H |
c906108c | 46 | #include <netdb.h> |
b80864fb DJ |
47 | #endif |
48 | #if HAVE_NETINET_TCP_H | |
c906108c | 49 | #include <netinet/tcp.h> |
b80864fb DJ |
50 | #endif |
51 | #if HAVE_SYS_IOCTL_H | |
c906108c | 52 | #include <sys/ioctl.h> |
b80864fb | 53 | #endif |
68070c10 | 54 | #if HAVE_SIGNAL_H |
c906108c | 55 | #include <signal.h> |
68070c10 PA |
56 | #endif |
57 | #if HAVE_FCNTL_H | |
c906108c | 58 | #include <fcntl.h> |
68070c10 | 59 | #endif |
268a13a5 | 60 | #include "gdbsupport/gdb_sys_time.h" |
cf30a8e1 | 61 | #include <unistd.h> |
b80864fb | 62 | #if HAVE_ARPA_INET_H |
0729219d | 63 | #include <arpa/inet.h> |
b80864fb | 64 | #endif |
53ce3c39 | 65 | #include <sys/stat.h> |
9eb1356e PA |
66 | |
67 | #if USE_WIN32API | |
41fa577f | 68 | #include <ws2tcpip.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 | ||
e0f9f062 DE |
109 | static int remote_is_stdio = 0; |
110 | ||
ec48365d PA |
111 | static gdb_fildes_t remote_desc = INVALID_DESCRIPTOR; |
112 | static gdb_fildes_t listen_desc = INVALID_DESCRIPTOR; | |
c906108c | 113 | |
0f48aa01 | 114 | #ifdef USE_WIN32API |
68070c10 PA |
115 | # define read(fd, buf, len) recv (fd, (char *) buf, len, 0) |
116 | # define write(fd, buf, len) send (fd, (char *) buf, len, 0) | |
0f48aa01 DJ |
117 | #endif |
118 | ||
8336d594 PA |
119 | int |
120 | gdb_connected (void) | |
121 | { | |
122 | return remote_desc != INVALID_DESCRIPTOR; | |
123 | } | |
124 | ||
e0f9f062 DE |
125 | /* Return true if the remote connection is over stdio. */ |
126 | ||
127 | int | |
128 | remote_connection_is_stdio (void) | |
129 | { | |
130 | return remote_is_stdio; | |
131 | } | |
132 | ||
8336d594 PA |
133 | static void |
134 | enable_async_notification (int fd) | |
135 | { | |
136 | #if defined(F_SETFL) && defined (FASYNC) | |
137 | int save_fcntl_flags; | |
138 | ||
139 | save_fcntl_flags = fcntl (fd, F_GETFL, 0); | |
140 | fcntl (fd, F_SETFL, save_fcntl_flags | FASYNC); | |
141 | #if defined (F_SETOWN) | |
142 | fcntl (fd, F_SETOWN, getpid ()); | |
143 | #endif | |
144 | #endif | |
145 | } | |
146 | ||
147 | static int | |
148 | handle_accept_event (int err, gdb_client_data client_data) | |
149 | { | |
c7ab0aef SDJ |
150 | struct sockaddr_storage sockaddr; |
151 | socklen_t len = sizeof (sockaddr); | |
8336d594 PA |
152 | |
153 | if (debug_threads) | |
87ce2a04 | 154 | debug_printf ("handling possible accept event\n"); |
8336d594 | 155 | |
c7ab0aef | 156 | remote_desc = accept (listen_desc, (struct sockaddr *) &sockaddr, &len); |
8336d594 PA |
157 | if (remote_desc == -1) |
158 | perror_with_name ("Accept failed"); | |
159 | ||
160 | /* Enable TCP keep alive process. */ | |
c7ab0aef | 161 | socklen_t tmp = 1; |
8336d594 PA |
162 | setsockopt (remote_desc, SOL_SOCKET, SO_KEEPALIVE, |
163 | (char *) &tmp, sizeof (tmp)); | |
164 | ||
165 | /* Tell TCP not to delay small packets. This greatly speeds up | |
166 | interactive response. */ | |
167 | tmp = 1; | |
168 | setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY, | |
169 | (char *) &tmp, sizeof (tmp)); | |
170 | ||
171 | #ifndef USE_WIN32API | |
8336d594 PA |
172 | signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply |
173 | exits when the remote side dies. */ | |
03f2bd59 JK |
174 | #endif |
175 | ||
176 | if (run_once) | |
177 | { | |
178 | #ifndef USE_WIN32API | |
179 | close (listen_desc); /* No longer need this */ | |
8336d594 | 180 | #else |
03f2bd59 | 181 | closesocket (listen_desc); /* No longer need this */ |
8336d594 | 182 | #endif |
03f2bd59 | 183 | } |
8336d594 | 184 | |
03f2bd59 JK |
185 | /* Even if !RUN_ONCE no longer notice new connections. Still keep the |
186 | descriptor open for add_file_handler to wait for a new connection. */ | |
8336d594 PA |
187 | delete_file_handler (listen_desc); |
188 | ||
80e24d09 SM |
189 | /* Convert IP address to string. */ |
190 | char orig_host[GDB_NI_MAX_ADDR], orig_port[GDB_NI_MAX_PORT]; | |
c7ab0aef | 191 | |
80e24d09 SM |
192 | int r = getnameinfo ((struct sockaddr *) &sockaddr, len, |
193 | orig_host, sizeof (orig_host), | |
194 | orig_port, sizeof (orig_port), | |
195 | NI_NUMERICHOST | NI_NUMERICSERV); | |
c7ab0aef | 196 | |
80e24d09 SM |
197 | if (r != 0) |
198 | fprintf (stderr, _("Could not obtain remote address: %s\n"), | |
199 | gai_strerror (r)); | |
c7ab0aef | 200 | else |
80e24d09 SM |
201 | fprintf (stderr, _("Remote debugging from host %s, port %s\n"), |
202 | orig_host, orig_port); | |
8336d594 PA |
203 | |
204 | enable_async_notification (remote_desc); | |
205 | ||
206 | /* Register the event loop handler. */ | |
207 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
208 | ||
209 | /* We have a new GDB connection now. If we were disconnected | |
210 | tracing, there's a window where the target could report a stop | |
211 | event to the event loop, and since we have a connection now, we'd | |
212 | try to send vStopped notifications to GDB. But, don't do that | |
213 | until GDB as selected all-stop/non-stop, and has queried the | |
214 | threads' status ('?'). */ | |
215 | target_async (0); | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
03f2bd59 JK |
220 | /* Prepare for a later connection to a remote debugger. |
221 | NAME is the filename used for communication. */ | |
222 | ||
223 | void | |
fb32b4f7 | 224 | remote_prepare (const char *name) |
03f2bd59 | 225 | { |
c12a5089 | 226 | client_state &cs = get_client_state (); |
03f2bd59 JK |
227 | #ifdef USE_WIN32API |
228 | static int winsock_initialized; | |
229 | #endif | |
03f2bd59 | 230 | socklen_t tmp; |
03f2bd59 | 231 | |
e0f9f062 DE |
232 | remote_is_stdio = 0; |
233 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
234 | { | |
235 | /* We need to record fact that we're using stdio sooner than the | |
236 | call to remote_open so start_inferior knows the connection is | |
237 | via stdio. */ | |
238 | remote_is_stdio = 1; | |
c12a5089 | 239 | cs.transport_is_reliable = 1; |
e0f9f062 DE |
240 | return; |
241 | } | |
242 | ||
c7ab0aef SDJ |
243 | struct addrinfo hint; |
244 | struct addrinfo *ainfo; | |
245 | ||
246 | memset (&hint, 0, sizeof (hint)); | |
247 | /* Assume no prefix will be passed, therefore we should use | |
248 | AF_UNSPEC. */ | |
249 | hint.ai_family = AF_UNSPEC; | |
250 | hint.ai_socktype = SOCK_STREAM; | |
251 | hint.ai_protocol = IPPROTO_TCP; | |
252 | ||
253 | parsed_connection_spec parsed | |
80e24d09 | 254 | = parse_connection_spec_without_prefix (name, &hint); |
c7ab0aef SDJ |
255 | |
256 | if (parsed.port_str.empty ()) | |
03f2bd59 | 257 | { |
c12a5089 | 258 | cs.transport_is_reliable = 0; |
03f2bd59 JK |
259 | return; |
260 | } | |
261 | ||
03f2bd59 JK |
262 | #ifdef USE_WIN32API |
263 | if (!winsock_initialized) | |
264 | { | |
265 | WSADATA wsad; | |
266 | ||
267 | WSAStartup (MAKEWORD (1, 0), &wsad); | |
268 | winsock_initialized = 1; | |
269 | } | |
270 | #endif | |
271 | ||
80e24d09 SM |
272 | int r = getaddrinfo (parsed.host_str.c_str (), parsed.port_str.c_str (), |
273 | &hint, &ainfo); | |
c7ab0aef | 274 | |
80e24d09 SM |
275 | if (r != 0) |
276 | error (_("%s: cannot resolve name: %s"), name, gai_strerror (r)); | |
c7ab0aef | 277 | |
80e24d09 | 278 | scoped_free_addrinfo freeaddrinfo (ainfo); |
c7ab0aef | 279 | |
80e24d09 | 280 | struct addrinfo *iter; |
c7ab0aef | 281 | |
80e24d09 | 282 | for (iter = ainfo; iter != NULL; iter = iter->ai_next) |
f19c7ff8 | 283 | { |
80e24d09 SM |
284 | listen_desc = gdb_socket_cloexec (iter->ai_family, iter->ai_socktype, |
285 | iter->ai_protocol); | |
f19c7ff8 | 286 | |
80e24d09 SM |
287 | if (listen_desc >= 0) |
288 | break; | |
289 | } | |
f19c7ff8 | 290 | |
80e24d09 SM |
291 | if (iter == NULL) |
292 | perror_with_name ("Can't open socket"); | |
f19c7ff8 | 293 | |
80e24d09 SM |
294 | /* Allow rapid reuse of this port. */ |
295 | tmp = 1; | |
296 | setsockopt (listen_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, | |
297 | sizeof (tmp)); | |
f19c7ff8 | 298 | |
80e24d09 SM |
299 | switch (iter->ai_family) |
300 | { | |
301 | case AF_INET: | |
302 | ((struct sockaddr_in *) iter->ai_addr)->sin_addr.s_addr = INADDR_ANY; | |
303 | break; | |
304 | case AF_INET6: | |
305 | ((struct sockaddr_in6 *) iter->ai_addr)->sin6_addr = in6addr_any; | |
306 | break; | |
307 | default: | |
308 | internal_error (__FILE__, __LINE__, | |
309 | _("Invalid 'ai_family' %d\n"), iter->ai_family); | |
c7ab0aef | 310 | } |
03f2bd59 | 311 | |
80e24d09 | 312 | if (bind (listen_desc, iter->ai_addr, iter->ai_addrlen) != 0) |
03f2bd59 JK |
313 | perror_with_name ("Can't bind address"); |
314 | ||
c7ab0aef SDJ |
315 | if (listen (listen_desc, 1) != 0) |
316 | perror_with_name ("Can't listen on socket"); | |
317 | ||
c12a5089 | 318 | cs.transport_is_reliable = 1; |
03f2bd59 JK |
319 | } |
320 | ||
c906108c SS |
321 | /* Open a connection to a remote debugger. |
322 | NAME is the filename used for communication. */ | |
323 | ||
324 | void | |
fb32b4f7 | 325 | remote_open (const char *name) |
c906108c | 326 | { |
fb32b4f7 | 327 | const char *port_str; |
8264bb58 DJ |
328 | |
329 | port_str = strchr (name, ':'); | |
e0f9f062 | 330 | #ifdef USE_WIN32API |
8264bb58 | 331 | if (port_str == NULL) |
752312ba | 332 | error ("Only HOST:PORT is supported on this platform."); |
e0f9f062 DE |
333 | #endif |
334 | ||
335 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
336 | { | |
337 | fprintf (stderr, "Remote debugging using stdio\n"); | |
338 | ||
339 | /* Use stdin as the handle of the connection. | |
340 | We only select on reads, for example. */ | |
341 | remote_desc = fileno (stdin); | |
342 | ||
343 | enable_async_notification (remote_desc); | |
344 | ||
345 | /* Register the event loop handler. */ | |
346 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
347 | } | |
348 | #ifndef USE_WIN32API | |
349 | else if (port_str == NULL) | |
80e24d09 | 350 | { |
8264bb58 DJ |
351 | struct stat statbuf; |
352 | ||
353 | if (stat (name, &statbuf) == 0 | |
80e24d09 | 354 | && (S_ISCHR (statbuf.st_mode) || S_ISFIFO (statbuf.st_mode))) |
8264bb58 DJ |
355 | remote_desc = open (name, O_RDWR); |
356 | else | |
357 | { | |
358 | errno = EINVAL; | |
359 | remote_desc = -1; | |
360 | } | |
361 | ||
c906108c SS |
362 | if (remote_desc < 0) |
363 | perror_with_name ("Could not open remote device"); | |
364 | ||
726e1356 | 365 | #if HAVE_TERMIOS_H |
c906108c SS |
366 | { |
367 | struct termios termios; | |
c5aa993b | 368 | tcgetattr (remote_desc, &termios); |
c906108c SS |
369 | |
370 | termios.c_iflag = 0; | |
371 | termios.c_oflag = 0; | |
372 | termios.c_lflag = 0; | |
c5aa993b | 373 | termios.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 374 | termios.c_cflag |= CLOCAL | CS8; |
d0608e50 | 375 | termios.c_cc[VMIN] = 1; |
c906108c SS |
376 | termios.c_cc[VTIME] = 0; |
377 | ||
c5aa993b | 378 | tcsetattr (remote_desc, TCSANOW, &termios); |
c906108c SS |
379 | } |
380 | #endif | |
381 | ||
e641a1ca | 382 | fprintf (stderr, "Remote debugging using %s\n", name); |
a6f3e723 | 383 | |
8336d594 PA |
384 | enable_async_notification (remote_desc); |
385 | ||
386 | /* Register the event loop handler. */ | |
387 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
c906108c | 388 | } |
e0f9f062 | 389 | #endif /* USE_WIN32API */ |
c906108c SS |
390 | else |
391 | { | |
c7ab0aef SDJ |
392 | char listen_port[GDB_NI_MAX_PORT]; |
393 | struct sockaddr_storage sockaddr; | |
394 | socklen_t len = sizeof (sockaddr); | |
395 | ||
396 | if (getsockname (listen_desc, (struct sockaddr *) &sockaddr, &len) < 0) | |
03f2bd59 | 397 | perror_with_name ("Can't determine port"); |
6f8486da | 398 | |
c7ab0aef SDJ |
399 | int r = getnameinfo ((struct sockaddr *) &sockaddr, len, |
400 | NULL, 0, | |
401 | listen_port, sizeof (listen_port), | |
402 | NI_NUMERICSERV); | |
403 | ||
404 | if (r != 0) | |
405 | fprintf (stderr, _("Can't obtain port where we are listening: %s"), | |
406 | gai_strerror (r)); | |
407 | else | |
408 | fprintf (stderr, _("Listening on port %s\n"), listen_port); | |
409 | ||
b80864fb | 410 | fflush (stderr); |
6910d122 | 411 | |
8336d594 PA |
412 | /* Register the event loop handler. */ |
413 | add_file_handler (listen_desc, handle_accept_event, NULL); | |
c906108c | 414 | } |
c906108c SS |
415 | } |
416 | ||
417 | void | |
fba45db2 | 418 | remote_close (void) |
c906108c | 419 | { |
bd99dc85 PA |
420 | delete_file_handler (remote_desc); |
421 | ||
e849ea89 | 422 | disable_async_io (); |
8b207339 | 423 | |
b80864fb DJ |
424 | #ifdef USE_WIN32API |
425 | closesocket (remote_desc); | |
426 | #else | |
e0f9f062 DE |
427 | if (! remote_connection_is_stdio ()) |
428 | close (remote_desc); | |
b80864fb | 429 | #endif |
8336d594 | 430 | remote_desc = INVALID_DESCRIPTOR; |
24b066ba DE |
431 | |
432 | reset_readchar (); | |
c906108c SS |
433 | } |
434 | ||
0fb4aa4b PA |
435 | #endif |
436 | ||
0fb4aa4b PA |
437 | #ifndef IN_PROCESS_AGENT |
438 | ||
dae5f5cf | 439 | void |
2f2893d9 DJ |
440 | decode_address (CORE_ADDR *addrp, const char *start, int len) |
441 | { | |
442 | CORE_ADDR addr; | |
443 | char ch; | |
444 | int i; | |
445 | ||
446 | addr = 0; | |
447 | for (i = 0; i < len; i++) | |
448 | { | |
449 | ch = start[i]; | |
450 | addr = addr << 4; | |
451 | addr = addr | (fromhex (ch) & 0x0f); | |
452 | } | |
453 | *addrp = addr; | |
454 | } | |
455 | ||
89be2091 DJ |
456 | const char * |
457 | decode_address_to_semicolon (CORE_ADDR *addrp, const char *start) | |
458 | { | |
459 | const char *end; | |
460 | ||
461 | end = start; | |
462 | while (*end != '\0' && *end != ';') | |
463 | end++; | |
464 | ||
465 | decode_address (addrp, start, end - start); | |
466 | ||
467 | if (*end == ';') | |
468 | end++; | |
469 | return end; | |
470 | } | |
471 | ||
0fb4aa4b PA |
472 | #endif |
473 | ||
0fb4aa4b PA |
474 | #ifndef IN_PROCESS_AGENT |
475 | ||
5ffff7c1 DJ |
476 | /* Look for a sequence of characters which can be run-length encoded. |
477 | If there are any, update *CSUM and *P. Otherwise, output the | |
478 | single character. Return the number of characters consumed. */ | |
479 | ||
480 | static int | |
481 | try_rle (char *buf, int remaining, unsigned char *csum, char **p) | |
482 | { | |
483 | int n; | |
484 | ||
485 | /* Always output the character. */ | |
486 | *csum += buf[0]; | |
487 | *(*p)++ = buf[0]; | |
488 | ||
489 | /* Don't go past '~'. */ | |
490 | if (remaining > 97) | |
491 | remaining = 97; | |
492 | ||
493 | for (n = 1; n < remaining; n++) | |
494 | if (buf[n] != buf[0]) | |
495 | break; | |
496 | ||
497 | /* N is the index of the first character not the same as buf[0]. | |
498 | buf[0] is counted twice, so by decrementing N, we get the number | |
499 | of characters the RLE sequence will replace. */ | |
500 | n--; | |
501 | ||
502 | if (n < 3) | |
503 | return 1; | |
504 | ||
505 | /* Skip the frame characters. The manual says to skip '+' and '-' | |
506 | also, but there's no reason to. Unfortunately these two unusable | |
507 | characters double the encoded length of a four byte zero | |
508 | value. */ | |
509 | while (n + 29 == '$' || n + 29 == '#') | |
510 | n--; | |
511 | ||
512 | *csum += '*'; | |
513 | *(*p)++ = '*'; | |
514 | *csum += n + 29; | |
515 | *(*p)++ = n + 29; | |
516 | ||
517 | return n + 1; | |
518 | } | |
519 | ||
0fb4aa4b PA |
520 | #endif |
521 | ||
0fb4aa4b PA |
522 | #ifndef IN_PROCESS_AGENT |
523 | ||
95954743 PA |
524 | /* Write a PTID to BUF. Returns BUF+CHARACTERS_WRITTEN. */ |
525 | ||
526 | char * | |
527 | write_ptid (char *buf, ptid_t ptid) | |
528 | { | |
c12a5089 | 529 | client_state &cs = get_client_state (); |
95954743 PA |
530 | int pid, tid; |
531 | ||
c12a5089 | 532 | if (cs.multi_process) |
95954743 | 533 | { |
e99b03dc | 534 | pid = ptid.pid (); |
95954743 PA |
535 | if (pid < 0) |
536 | buf += sprintf (buf, "p-%x.", -pid); | |
537 | else | |
538 | buf += sprintf (buf, "p%x.", pid); | |
539 | } | |
e38504b3 | 540 | tid = ptid.lwp (); |
95954743 PA |
541 | if (tid < 0) |
542 | buf += sprintf (buf, "-%x", -tid); | |
543 | else | |
544 | buf += sprintf (buf, "%x", tid); | |
545 | ||
546 | return buf; | |
547 | } | |
548 | ||
5b3da067 | 549 | static ULONGEST |
256642e8 | 550 | hex_or_minus_one (const char *buf, const char **obuf) |
95954743 PA |
551 | { |
552 | ULONGEST ret; | |
553 | ||
61012eef | 554 | if (startswith (buf, "-1")) |
95954743 PA |
555 | { |
556 | ret = (ULONGEST) -1; | |
557 | buf += 2; | |
558 | } | |
559 | else | |
560 | buf = unpack_varlen_hex (buf, &ret); | |
561 | ||
562 | if (obuf) | |
563 | *obuf = buf; | |
564 | ||
565 | return ret; | |
566 | } | |
567 | ||
568 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
569 | passed the last parsed char. Returns null_ptid on error. */ | |
570 | ptid_t | |
256642e8 | 571 | read_ptid (const char *buf, const char **obuf) |
95954743 | 572 | { |
256642e8 PA |
573 | const char *p = buf; |
574 | const char *pp; | |
95954743 PA |
575 | ULONGEST pid = 0, tid = 0; |
576 | ||
577 | if (*p == 'p') | |
578 | { | |
579 | /* Multi-process ptid. */ | |
580 | pp = unpack_varlen_hex (p + 1, &pid); | |
581 | if (*pp != '.') | |
582 | error ("invalid remote ptid: %s\n", p); | |
583 | ||
584 | p = pp + 1; | |
585 | ||
586 | tid = hex_or_minus_one (p, &pp); | |
587 | ||
588 | if (obuf) | |
589 | *obuf = pp; | |
fd79271b | 590 | return ptid_t (pid, tid, 0); |
95954743 PA |
591 | } |
592 | ||
593 | /* No multi-process. Just a tid. */ | |
594 | tid = hex_or_minus_one (p, &pp); | |
595 | ||
3d40fbb5 PA |
596 | /* Since GDB is not sending a process id (multi-process extensions |
597 | are off), then there's only one process. Default to the first in | |
598 | the list. */ | |
599 | pid = pid_of (get_first_process ()); | |
95954743 PA |
600 | |
601 | if (obuf) | |
602 | *obuf = pp; | |
fd79271b | 603 | return ptid_t (pid, tid, 0); |
95954743 PA |
604 | } |
605 | ||
e0f9f062 DE |
606 | /* Write COUNT bytes in BUF to the client. |
607 | The result is the number of bytes written or -1 if error. | |
608 | This may return less than COUNT. */ | |
609 | ||
610 | static int | |
611 | write_prim (const void *buf, int count) | |
612 | { | |
613 | if (remote_connection_is_stdio ()) | |
614 | return write (fileno (stdout), buf, count); | |
615 | else | |
616 | return write (remote_desc, buf, count); | |
617 | } | |
618 | ||
619 | /* Read COUNT bytes from the client and store in BUF. | |
620 | The result is the number of bytes read or -1 if error. | |
621 | This may return less than COUNT. */ | |
622 | ||
623 | static int | |
624 | read_prim (void *buf, int count) | |
625 | { | |
626 | if (remote_connection_is_stdio ()) | |
627 | return read (fileno (stdin), buf, count); | |
628 | else | |
629 | return read (remote_desc, buf, count); | |
630 | } | |
631 | ||
c906108c | 632 | /* Send a packet to the remote machine, with error checking. |
01f9e8fa DJ |
633 | The data of the packet is in BUF, and the length of the |
634 | packet is in CNT. Returns >= 0 on success, -1 otherwise. */ | |
c906108c | 635 | |
bd99dc85 PA |
636 | static int |
637 | putpkt_binary_1 (char *buf, int cnt, int is_notif) | |
c906108c | 638 | { |
c12a5089 | 639 | client_state &cs = get_client_state (); |
c906108c SS |
640 | int i; |
641 | unsigned char csum = 0; | |
0a30fbc4 | 642 | char *buf2; |
c906108c | 643 | char *p; |
bc3b5632 | 644 | int cc; |
c906108c | 645 | |
224c3ddb | 646 | buf2 = (char *) xmalloc (strlen ("$") + cnt + strlen ("#nn") + 1); |
0a30fbc4 | 647 | |
c906108c SS |
648 | /* Copy the packet into buffer BUF2, encapsulating it |
649 | and giving it a checksum. */ | |
650 | ||
651 | p = buf2; | |
bd99dc85 PA |
652 | if (is_notif) |
653 | *p++ = '%'; | |
654 | else | |
655 | *p++ = '$'; | |
c906108c | 656 | |
5ffff7c1 DJ |
657 | for (i = 0; i < cnt;) |
658 | i += try_rle (buf + i, cnt - i, &csum, &p); | |
659 | ||
c906108c SS |
660 | *p++ = '#'; |
661 | *p++ = tohex ((csum >> 4) & 0xf); | |
662 | *p++ = tohex (csum & 0xf); | |
663 | ||
664 | *p = '\0'; | |
665 | ||
666 | /* Send it over and over until we get a positive ack. */ | |
667 | ||
668 | do | |
669 | { | |
e0f9f062 | 670 | if (write_prim (buf2, p - buf2) != p - buf2) |
c906108c SS |
671 | { |
672 | perror ("putpkt(write)"); | |
f88c79e6 | 673 | free (buf2); |
c906108c SS |
674 | return -1; |
675 | } | |
676 | ||
c12a5089 | 677 | if (cs.noack_mode || is_notif) |
a6f3e723 SL |
678 | { |
679 | /* Don't expect an ack then. */ | |
680 | if (remote_debug) | |
681 | { | |
bd99dc85 | 682 | if (is_notif) |
4eefa7bc | 683 | debug_printf ("putpkt (\"%s\"); [notif]\n", buf2); |
bd99dc85 | 684 | else |
4eefa7bc PA |
685 | debug_printf ("putpkt (\"%s\"); [noack mode]\n", buf2); |
686 | debug_flush (); | |
a6f3e723 SL |
687 | } |
688 | break; | |
689 | } | |
690 | ||
c906108c | 691 | if (remote_debug) |
0d62e5e8 | 692 | { |
4eefa7bc PA |
693 | debug_printf ("putpkt (\"%s\"); [looking for ack]\n", buf2); |
694 | debug_flush (); | |
0d62e5e8 | 695 | } |
0d62e5e8 | 696 | |
bc3b5632 | 697 | cc = readchar (); |
c906108c | 698 | |
bc3b5632 DE |
699 | if (cc < 0) |
700 | { | |
0a30fbc4 | 701 | free (buf2); |
c906108c SS |
702 | return -1; |
703 | } | |
0d62e5e8 | 704 | |
bc3b5632 DE |
705 | if (remote_debug) |
706 | { | |
4eefa7bc PA |
707 | debug_printf ("[received '%c' (0x%x)]\n", cc, cc); |
708 | debug_flush (); | |
bc3b5632 DE |
709 | } |
710 | ||
0d62e5e8 | 711 | /* Check for an input interrupt while we're here. */ |
0bfdf32f | 712 | if (cc == '\003' && current_thread != NULL) |
eb497a2a | 713 | the_target->pt->request_interrupt (); |
c906108c | 714 | } |
bc3b5632 | 715 | while (cc != '+'); |
c906108c | 716 | |
0a30fbc4 | 717 | free (buf2); |
c906108c SS |
718 | return 1; /* Success! */ |
719 | } | |
720 | ||
bd99dc85 PA |
721 | int |
722 | putpkt_binary (char *buf, int cnt) | |
723 | { | |
724 | return putpkt_binary_1 (buf, cnt, 0); | |
725 | } | |
726 | ||
01f9e8fa DJ |
727 | /* Send a packet to the remote machine, with error checking. The data |
728 | of the packet is in BUF, and the packet should be a NUL-terminated | |
729 | string. Returns >= 0 on success, -1 otherwise. */ | |
730 | ||
731 | int | |
732 | putpkt (char *buf) | |
733 | { | |
734 | return putpkt_binary (buf, strlen (buf)); | |
735 | } | |
736 | ||
bd99dc85 PA |
737 | int |
738 | putpkt_notif (char *buf) | |
739 | { | |
740 | return putpkt_binary_1 (buf, strlen (buf), 1); | |
741 | } | |
742 | ||
c906108c SS |
743 | /* Come here when we get an input interrupt from the remote side. This |
744 | interrupt should only be active while we are waiting for the child to do | |
bc3b5632 DE |
745 | something. Thus this assumes readchar:bufcnt is 0. |
746 | About the only thing that should come through is a ^C, which | |
ef57601b | 747 | will cause us to request child interruption. */ |
c906108c SS |
748 | |
749 | static void | |
0a30fbc4 | 750 | input_interrupt (int unused) |
c906108c | 751 | { |
cf30a8e1 C |
752 | fd_set readset; |
753 | struct timeval immediate = { 0, 0 }; | |
c906108c | 754 | |
cf30a8e1 C |
755 | /* Protect against spurious interrupts. This has been observed to |
756 | be a problem under NetBSD 1.4 and 1.5. */ | |
c906108c | 757 | |
cf30a8e1 C |
758 | FD_ZERO (&readset); |
759 | FD_SET (remote_desc, &readset); | |
760 | if (select (remote_desc + 1, &readset, 0, 0, &immediate) > 0) | |
c906108c | 761 | { |
cf30a8e1 | 762 | int cc; |
fd500816 | 763 | char c = 0; |
7390519e | 764 | |
e0f9f062 | 765 | cc = read_prim (&c, 1); |
c906108c | 766 | |
fafcc06a | 767 | if (cc == 0) |
cf30a8e1 | 768 | { |
fafcc06a SDJ |
769 | fprintf (stderr, "client connection closed\n"); |
770 | return; | |
771 | } | |
f0db101d | 772 | else if (cc != 1 || c != '\003') |
fafcc06a SDJ |
773 | { |
774 | fprintf (stderr, "input_interrupt, count = %d c = %d ", cc, c); | |
775 | if (isprint (c)) | |
776 | fprintf (stderr, "('%c')\n", c); | |
777 | else | |
778 | fprintf (stderr, "('\\x%02x')\n", c & 0xff); | |
cf30a8e1 C |
779 | return; |
780 | } | |
7390519e | 781 | |
eb497a2a | 782 | the_target->pt->request_interrupt (); |
cf30a8e1 | 783 | } |
c906108c | 784 | } |
7390519e PA |
785 | |
786 | /* Check if the remote side sent us an interrupt request (^C). */ | |
787 | void | |
788 | check_remote_input_interrupt_request (void) | |
789 | { | |
790 | /* This function may be called before establishing communications, | |
791 | therefore we need to validate the remote descriptor. */ | |
792 | ||
793 | if (remote_desc == INVALID_DESCRIPTOR) | |
794 | return; | |
795 | ||
796 | input_interrupt (0); | |
797 | } | |
b80864fb | 798 | |
8b207339 YQ |
799 | /* Asynchronous I/O support. SIGIO must be unblocked when waiting, |
800 | in order to accept Control-C from the client, and must be blocked | |
801 | when talking to the client. */ | |
c906108c | 802 | |
a20d5e98 | 803 | static void |
8b207339 | 804 | block_unblock_async_io (int block) |
62ea82f5 | 805 | { |
b80864fb | 806 | #ifndef USE_WIN32API |
62ea82f5 | 807 | sigset_t sigio_set; |
a20d5e98 | 808 | |
62ea82f5 DJ |
809 | sigemptyset (&sigio_set); |
810 | sigaddset (&sigio_set, SIGIO); | |
21987b9c | 811 | gdb_sigmask (block ? SIG_BLOCK : SIG_UNBLOCK, &sigio_set, NULL); |
b80864fb | 812 | #endif |
62ea82f5 DJ |
813 | } |
814 | ||
ac8c974e AR |
815 | #ifdef __QNX__ |
816 | static void | |
817 | nto_comctrl (int enable) | |
818 | { | |
819 | struct sigevent event; | |
820 | ||
821 | if (enable) | |
822 | { | |
823 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
824 | event.sigev_signo = SIGIO; | |
825 | event.sigev_code = 0; | |
826 | event.sigev_value.sival_ptr = NULL; | |
827 | event.sigev_priority = -1; | |
828 | ionotify (remote_desc, _NOTIFY_ACTION_POLLARM, _NOTIFY_COND_INPUT, | |
829 | &event); | |
830 | } | |
831 | else | |
832 | ionotify (remote_desc, _NOTIFY_ACTION_POLL, _NOTIFY_COND_INPUT, NULL); | |
833 | } | |
834 | #endif /* __QNX__ */ | |
835 | ||
836 | ||
fd500816 DJ |
837 | /* Current state of asynchronous I/O. */ |
838 | static int async_io_enabled; | |
839 | ||
840 | /* Enable asynchronous I/O. */ | |
c906108c | 841 | void |
fba45db2 | 842 | enable_async_io (void) |
c906108c | 843 | { |
fd500816 DJ |
844 | if (async_io_enabled) |
845 | return; | |
846 | ||
8b207339 YQ |
847 | block_unblock_async_io (0); |
848 | ||
fd500816 | 849 | async_io_enabled = 1; |
ac8c974e AR |
850 | #ifdef __QNX__ |
851 | nto_comctrl (1); | |
852 | #endif /* __QNX__ */ | |
c906108c SS |
853 | } |
854 | ||
fd500816 | 855 | /* Disable asynchronous I/O. */ |
c906108c | 856 | void |
fba45db2 | 857 | disable_async_io (void) |
c906108c | 858 | { |
fd500816 DJ |
859 | if (!async_io_enabled) |
860 | return; | |
861 | ||
8b207339 YQ |
862 | block_unblock_async_io (1); |
863 | ||
fd500816 | 864 | async_io_enabled = 0; |
ac8c974e AR |
865 | #ifdef __QNX__ |
866 | nto_comctrl (0); | |
867 | #endif /* __QNX__ */ | |
868 | ||
c906108c SS |
869 | } |
870 | ||
a20d5e98 DJ |
871 | void |
872 | initialize_async_io (void) | |
873 | { | |
8b207339 | 874 | /* Make sure that async I/O starts blocked. */ |
a20d5e98 DJ |
875 | async_io_enabled = 1; |
876 | disable_async_io (); | |
877 | ||
8b207339 YQ |
878 | /* Install the signal handler. */ |
879 | #ifndef USE_WIN32API | |
880 | signal (SIGIO, input_interrupt); | |
881 | #endif | |
a20d5e98 DJ |
882 | } |
883 | ||
24b066ba DE |
884 | /* Internal buffer used by readchar. |
885 | These are global to readchar because reschedule_remote needs to be | |
886 | able to tell whether the buffer is empty. */ | |
887 | ||
888 | static unsigned char readchar_buf[BUFSIZ]; | |
889 | static int readchar_bufcnt = 0; | |
890 | static unsigned char *readchar_bufp; | |
891 | ||
c906108c SS |
892 | /* Returns next char from remote GDB. -1 if error. */ |
893 | ||
894 | static int | |
fba45db2 | 895 | readchar (void) |
c906108c | 896 | { |
24b066ba | 897 | int ch; |
c906108c | 898 | |
24b066ba DE |
899 | if (readchar_bufcnt == 0) |
900 | { | |
e0f9f062 | 901 | readchar_bufcnt = read_prim (readchar_buf, sizeof (readchar_buf)); |
c906108c | 902 | |
24b066ba DE |
903 | if (readchar_bufcnt <= 0) |
904 | { | |
905 | if (readchar_bufcnt == 0) | |
fddedbe6 PA |
906 | { |
907 | if (remote_debug) | |
4eefa7bc | 908 | debug_printf ("readchar: Got EOF\n"); |
fddedbe6 | 909 | } |
24b066ba DE |
910 | else |
911 | perror ("readchar"); | |
c906108c | 912 | |
24b066ba DE |
913 | return -1; |
914 | } | |
c906108c | 915 | |
24b066ba | 916 | readchar_bufp = readchar_buf; |
c906108c SS |
917 | } |
918 | ||
24b066ba DE |
919 | readchar_bufcnt--; |
920 | ch = *readchar_bufp++; | |
921 | reschedule (); | |
922 | return ch; | |
923 | } | |
924 | ||
925 | /* Reset the readchar state machine. */ | |
926 | ||
927 | static void | |
928 | reset_readchar (void) | |
929 | { | |
930 | readchar_bufcnt = 0; | |
931 | if (readchar_callback != NOT_SCHEDULED) | |
932 | { | |
933 | delete_callback_event (readchar_callback); | |
934 | readchar_callback = NOT_SCHEDULED; | |
935 | } | |
936 | } | |
937 | ||
938 | /* Process remaining data in readchar_buf. */ | |
939 | ||
940 | static int | |
941 | process_remaining (void *context) | |
942 | { | |
943 | int res; | |
944 | ||
945 | /* This is a one-shot event. */ | |
946 | readchar_callback = NOT_SCHEDULED; | |
947 | ||
948 | if (readchar_bufcnt > 0) | |
949 | res = handle_serial_event (0, NULL); | |
950 | else | |
951 | res = 0; | |
952 | ||
953 | return res; | |
954 | } | |
955 | ||
956 | /* If there is still data in the buffer, queue another event to process it, | |
957 | we can't sleep in select yet. */ | |
958 | ||
959 | static void | |
960 | reschedule (void) | |
961 | { | |
962 | if (readchar_bufcnt > 0 && readchar_callback == NOT_SCHEDULED) | |
963 | readchar_callback = append_callback_event (process_remaining, NULL); | |
c906108c SS |
964 | } |
965 | ||
966 | /* Read a packet from the remote machine, with error checking, | |
967 | and store it in BUF. Returns length of packet, or negative if error. */ | |
968 | ||
969 | int | |
fba45db2 | 970 | getpkt (char *buf) |
c906108c | 971 | { |
c12a5089 | 972 | client_state &cs = get_client_state (); |
c906108c SS |
973 | char *bp; |
974 | unsigned char csum, c1, c2; | |
975 | int c; | |
976 | ||
977 | while (1) | |
978 | { | |
979 | csum = 0; | |
980 | ||
981 | while (1) | |
982 | { | |
983 | c = readchar (); | |
5a0dd67a YQ |
984 | |
985 | /* The '\003' may appear before or after each packet, so | |
986 | check for an input interrupt. */ | |
987 | if (c == '\003') | |
988 | { | |
eb497a2a | 989 | the_target->pt->request_interrupt (); |
5a0dd67a YQ |
990 | continue; |
991 | } | |
992 | ||
c906108c SS |
993 | if (c == '$') |
994 | break; | |
995 | if (remote_debug) | |
0d62e5e8 | 996 | { |
4eefa7bc PA |
997 | debug_printf ("[getpkt: discarding char '%c']\n", c); |
998 | debug_flush (); | |
0d62e5e8 DJ |
999 | } |
1000 | ||
c906108c SS |
1001 | if (c < 0) |
1002 | return -1; | |
1003 | } | |
1004 | ||
1005 | bp = buf; | |
1006 | while (1) | |
1007 | { | |
1008 | c = readchar (); | |
1009 | if (c < 0) | |
1010 | return -1; | |
1011 | if (c == '#') | |
1012 | break; | |
1013 | *bp++ = c; | |
1014 | csum += c; | |
1015 | } | |
1016 | *bp = 0; | |
1017 | ||
1018 | c1 = fromhex (readchar ()); | |
1019 | c2 = fromhex (readchar ()); | |
c5aa993b | 1020 | |
c906108c SS |
1021 | if (csum == (c1 << 4) + c2) |
1022 | break; | |
1023 | ||
c12a5089 | 1024 | if (cs.noack_mode) |
a6f3e723 | 1025 | { |
493e2a69 MS |
1026 | fprintf (stderr, |
1027 | "Bad checksum, sentsum=0x%x, csum=0x%x, " | |
1028 | "buf=%s [no-ack-mode, Bad medium?]\n", | |
a6f3e723 SL |
1029 | (c1 << 4) + c2, csum, buf); |
1030 | /* Not much we can do, GDB wasn't expecting an ack/nac. */ | |
1031 | break; | |
1032 | } | |
1033 | ||
c906108c SS |
1034 | fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n", |
1035 | (c1 << 4) + c2, csum, buf); | |
e0f9f062 | 1036 | if (write_prim ("-", 1) != 1) |
e581f2b4 | 1037 | return -1; |
c906108c SS |
1038 | } |
1039 | ||
c12a5089 | 1040 | if (!cs.noack_mode) |
0d62e5e8 | 1041 | { |
a6f3e723 SL |
1042 | if (remote_debug) |
1043 | { | |
4eefa7bc PA |
1044 | debug_printf ("getpkt (\"%s\"); [sending ack] \n", buf); |
1045 | debug_flush (); | |
a6f3e723 | 1046 | } |
c906108c | 1047 | |
e0f9f062 | 1048 | if (write_prim ("+", 1) != 1) |
e581f2b4 | 1049 | return -1; |
c906108c | 1050 | |
a6f3e723 SL |
1051 | if (remote_debug) |
1052 | { | |
4eefa7bc PA |
1053 | debug_printf ("[sent ack]\n"); |
1054 | debug_flush (); | |
a6f3e723 | 1055 | } |
0d62e5e8 | 1056 | } |
86b1f9c5 PM |
1057 | else |
1058 | { | |
1059 | if (remote_debug) | |
1060 | { | |
4eefa7bc PA |
1061 | debug_printf ("getpkt (\"%s\"); [no ack sent] \n", buf); |
1062 | debug_flush (); | |
86b1f9c5 PM |
1063 | } |
1064 | } | |
0d62e5e8 | 1065 | |
18879fef YQ |
1066 | /* The readchar above may have already read a '\003' out of the socket |
1067 | and moved it to the local buffer. For example, when GDB sends | |
1068 | vCont;c immediately followed by interrupt (see | |
1069 | gdb.base/interrupt-noterm.exp). As soon as we see the vCont;c, we'll | |
1070 | resume the inferior and wait. Since we've already moved the '\003' | |
1071 | to the local buffer, SIGIO won't help. In that case, if we don't | |
1072 | check for interrupt after the vCont;c packet, the interrupt character | |
1073 | would stay in the buffer unattended until after the next (unrelated) | |
1074 | stop. */ | |
1075 | while (readchar_bufcnt > 0 && *readchar_bufp == '\003') | |
1076 | { | |
1077 | /* Consume the interrupt character in the buffer. */ | |
1078 | readchar (); | |
eb497a2a | 1079 | the_target->pt->request_interrupt (); |
18879fef YQ |
1080 | } |
1081 | ||
c906108c SS |
1082 | return bp - buf; |
1083 | } | |
1084 | ||
1085 | void | |
fba45db2 | 1086 | write_ok (char *buf) |
c906108c SS |
1087 | { |
1088 | buf[0] = 'O'; | |
1089 | buf[1] = 'K'; | |
1090 | buf[2] = '\0'; | |
1091 | } | |
1092 | ||
1093 | void | |
fba45db2 | 1094 | write_enn (char *buf) |
c906108c | 1095 | { |
c89dc5d4 | 1096 | /* Some day, we should define the meanings of the error codes... */ |
c906108c | 1097 | buf[0] = 'E'; |
c89dc5d4 DJ |
1098 | buf[1] = '0'; |
1099 | buf[2] = '1'; | |
c906108c SS |
1100 | buf[3] = '\0'; |
1101 | } | |
1102 | ||
0fb4aa4b PA |
1103 | #endif |
1104 | ||
0fb4aa4b | 1105 | #ifndef IN_PROCESS_AGENT |
c906108c | 1106 | |
c906108c | 1107 | static char * |
442ea881 | 1108 | outreg (struct regcache *regcache, int regno, char *buf) |
c906108c | 1109 | { |
5c44784c JM |
1110 | if ((regno >> 12) != 0) |
1111 | *buf++ = tohex ((regno >> 12) & 0xf); | |
1112 | if ((regno >> 8) != 0) | |
1113 | *buf++ = tohex ((regno >> 8) & 0xf); | |
1114 | *buf++ = tohex ((regno >> 4) & 0xf); | |
c906108c SS |
1115 | *buf++ = tohex (regno & 0xf); |
1116 | *buf++ = ':'; | |
442ea881 | 1117 | collect_register_as_string (regcache, regno, buf); |
3aee8918 | 1118 | buf += 2 * register_size (regcache->tdesc, regno); |
c906108c SS |
1119 | *buf++ = ';'; |
1120 | ||
1121 | return buf; | |
1122 | } | |
1123 | ||
1124 | void | |
95954743 | 1125 | prepare_resume_reply (char *buf, ptid_t ptid, |
5b1c542e | 1126 | struct target_waitstatus *status) |
c906108c | 1127 | { |
c12a5089 | 1128 | client_state &cs = get_client_state (); |
5b1c542e | 1129 | if (debug_threads) |
87ce2a04 DE |
1130 | debug_printf ("Writing resume reply for %s:%d\n", |
1131 | target_pid_to_str (ptid), status->kind); | |
c906108c | 1132 | |
5b1c542e | 1133 | switch (status->kind) |
c906108c | 1134 | { |
5b1c542e | 1135 | case TARGET_WAITKIND_STOPPED: |
de0d863e | 1136 | case TARGET_WAITKIND_FORKED: |
c269dbdb | 1137 | case TARGET_WAITKIND_VFORKED: |
8228463c | 1138 | case TARGET_WAITKIND_VFORK_DONE: |
94585166 | 1139 | case TARGET_WAITKIND_EXECD: |
65706a29 | 1140 | case TARGET_WAITKIND_THREAD_CREATED: |
82075af2 JS |
1141 | case TARGET_WAITKIND_SYSCALL_ENTRY: |
1142 | case TARGET_WAITKIND_SYSCALL_RETURN: | |
5b1c542e | 1143 | { |
0bfdf32f | 1144 | struct thread_info *saved_thread; |
5b1c542e | 1145 | const char **regp; |
442ea881 | 1146 | struct regcache *regcache; |
e013ee27 | 1147 | |
c12a5089 | 1148 | if ((status->kind == TARGET_WAITKIND_FORKED && cs.report_fork_events) |
80e24d09 | 1149 | || (status->kind == TARGET_WAITKIND_VFORKED |
c12a5089 | 1150 | && cs.report_vfork_events)) |
de0d863e DB |
1151 | { |
1152 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
c269dbdb DB |
1153 | const char *event = (status->kind == TARGET_WAITKIND_FORKED |
1154 | ? "fork" : "vfork"); | |
de0d863e | 1155 | |
c269dbdb | 1156 | sprintf (buf, "T%02x%s:", signal, event); |
de0d863e DB |
1157 | buf += strlen (buf); |
1158 | buf = write_ptid (buf, status->value.related_pid); | |
1159 | strcat (buf, ";"); | |
1160 | } | |
80e24d09 | 1161 | else if (status->kind == TARGET_WAITKIND_VFORK_DONE |
c12a5089 | 1162 | && cs.report_vfork_events) |
8228463c PA |
1163 | { |
1164 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1165 | ||
1166 | sprintf (buf, "T%02xvforkdone:;", signal); | |
1167 | } | |
c12a5089 | 1168 | else if (status->kind == TARGET_WAITKIND_EXECD && cs.report_exec_events) |
94585166 DB |
1169 | { |
1170 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1171 | const char *event = "exec"; | |
1172 | char hexified_pathname[PATH_MAX * 2]; | |
1173 | ||
1174 | sprintf (buf, "T%02x%s:", signal, event); | |
1175 | buf += strlen (buf); | |
1176 | ||
1177 | /* Encode pathname to hexified format. */ | |
1178 | bin2hex ((const gdb_byte *) status->value.execd_pathname, | |
1179 | hexified_pathname, | |
1180 | strlen (status->value.execd_pathname)); | |
1181 | ||
1182 | sprintf (buf, "%s;", hexified_pathname); | |
1183 | xfree (status->value.execd_pathname); | |
1184 | status->value.execd_pathname = NULL; | |
1185 | buf += strlen (buf); | |
1186 | } | |
65706a29 | 1187 | else if (status->kind == TARGET_WAITKIND_THREAD_CREATED |
c12a5089 | 1188 | && cs.report_thread_events) |
65706a29 PA |
1189 | { |
1190 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1191 | ||
1192 | sprintf (buf, "T%02xcreate:;", signal); | |
1193 | } | |
82075af2 JS |
1194 | else if (status->kind == TARGET_WAITKIND_SYSCALL_ENTRY |
1195 | || status->kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
1196 | { | |
1197 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1198 | const char *event = (status->kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
1199 | ? "syscall_entry" : "syscall_return"); | |
1200 | ||
1201 | sprintf (buf, "T%02x%s:%x;", signal, event, | |
1202 | status->value.syscall_number); | |
1203 | } | |
de0d863e DB |
1204 | else |
1205 | sprintf (buf, "T%02x", status->value.sig); | |
1206 | ||
5b1c542e | 1207 | buf += strlen (buf); |
e013ee27 | 1208 | |
0bfdf32f | 1209 | saved_thread = current_thread; |
e013ee27 | 1210 | |
5b6d1e4f | 1211 | switch_to_thread (the_target, ptid); |
e013ee27 | 1212 | |
3aee8918 PA |
1213 | regp = current_target_desc ()->expedite_regs; |
1214 | ||
0bfdf32f | 1215 | regcache = get_thread_regcache (current_thread, 1); |
442ea881 | 1216 | |
6eeb5c55 | 1217 | if (the_target->pt->stopped_by_watchpoint ()) |
5b1c542e PA |
1218 | { |
1219 | CORE_ADDR addr; | |
1220 | int i; | |
c906108c | 1221 | |
29f9a567 | 1222 | memcpy (buf, "watch:", 6); |
5b1c542e | 1223 | buf += 6; |
0d62e5e8 | 1224 | |
6eeb5c55 | 1225 | addr = the_target->pt->stopped_data_address (); |
255e7678 | 1226 | |
5b1c542e PA |
1227 | /* Convert each byte of the address into two hexadecimal |
1228 | chars. Note that we take sizeof (void *) instead of | |
1229 | sizeof (addr); this is to avoid sending a 64-bit | |
1230 | address to a 32-bit GDB. */ | |
1231 | for (i = sizeof (void *) * 2; i > 0; i--) | |
1232 | *buf++ = tohex ((addr >> (i - 1) * 4) & 0xf); | |
1233 | *buf++ = ';'; | |
1234 | } | |
c12a5089 | 1235 | else if (cs.swbreak_feature && target_stopped_by_sw_breakpoint ()) |
1ec68e26 PA |
1236 | { |
1237 | sprintf (buf, "swbreak:;"); | |
1238 | buf += strlen (buf); | |
1239 | } | |
c12a5089 | 1240 | else if (cs.hwbreak_feature && target_stopped_by_hw_breakpoint ()) |
1ec68e26 PA |
1241 | { |
1242 | sprintf (buf, "hwbreak:;"); | |
1243 | buf += strlen (buf); | |
1244 | } | |
5b1c542e PA |
1245 | |
1246 | while (*regp) | |
1247 | { | |
3aee8918 | 1248 | buf = outreg (regcache, find_regno (regcache->tdesc, *regp), buf); |
5b1c542e PA |
1249 | regp ++; |
1250 | } | |
5472f405 | 1251 | *buf = '\0'; |
5b1c542e PA |
1252 | |
1253 | /* Formerly, if the debugger had not used any thread features | |
1254 | we would not burden it with a thread status response. This | |
1255 | was for the benefit of GDB 4.13 and older. However, in | |
1256 | recent GDB versions the check (``if (cont_thread != 0)'') | |
1257 | does not have the desired effect because of sillyness in | |
1258 | the way that the remote protocol handles specifying a | |
1259 | thread. Since thread support relies on qSymbol support | |
1260 | anyway, assume GDB can handle threads. */ | |
1261 | ||
1262 | if (using_threads && !disable_packet_Tthread) | |
1263 | { | |
1264 | /* This if (1) ought to be unnecessary. But remote_wait | |
1265 | in GDB will claim this event belongs to inferior_ptid | |
1266 | if we do not specify a thread, and there's no way for | |
1267 | gdbserver to know what inferior_ptid is. */ | |
d7e15655 | 1268 | if (1 || cs.general_thread != ptid) |
5b1c542e | 1269 | { |
dc146f7c | 1270 | int core = -1; |
bd99dc85 PA |
1271 | /* In non-stop, don't change the general thread behind |
1272 | GDB's back. */ | |
1273 | if (!non_stop) | |
c12a5089 | 1274 | cs.general_thread = ptid; |
95954743 PA |
1275 | sprintf (buf, "thread:"); |
1276 | buf += strlen (buf); | |
1277 | buf = write_ptid (buf, ptid); | |
1278 | strcat (buf, ";"); | |
5b1c542e | 1279 | buf += strlen (buf); |
dc146f7c | 1280 | |
3e10640f YQ |
1281 | core = target_core_of_thread (ptid); |
1282 | ||
dc146f7c VP |
1283 | if (core != -1) |
1284 | { | |
1285 | sprintf (buf, "core:"); | |
1286 | buf += strlen (buf); | |
1287 | sprintf (buf, "%x", core); | |
1288 | strcat (buf, ";"); | |
1289 | buf += strlen (buf); | |
1290 | } | |
5b1c542e PA |
1291 | } |
1292 | } | |
1293 | ||
1294 | if (dlls_changed) | |
1295 | { | |
1296 | strcpy (buf, "library:;"); | |
1297 | buf += strlen (buf); | |
1298 | dlls_changed = 0; | |
1299 | } | |
1300 | ||
0bfdf32f | 1301 | current_thread = saved_thread; |
5b1c542e PA |
1302 | } |
1303 | break; | |
1304 | case TARGET_WAITKIND_EXITED: | |
c12a5089 | 1305 | if (cs.multi_process) |
95954743 | 1306 | sprintf (buf, "W%x;process:%x", |
e99b03dc | 1307 | status->value.integer, ptid.pid ()); |
95954743 PA |
1308 | else |
1309 | sprintf (buf, "W%02x", status->value.integer); | |
5b1c542e PA |
1310 | break; |
1311 | case TARGET_WAITKIND_SIGNALLED: | |
c12a5089 | 1312 | if (cs.multi_process) |
95954743 | 1313 | sprintf (buf, "X%x;process:%x", |
e99b03dc | 1314 | status->value.sig, ptid.pid ()); |
95954743 PA |
1315 | else |
1316 | sprintf (buf, "X%02x", status->value.sig); | |
5b1c542e | 1317 | break; |
65706a29 PA |
1318 | case TARGET_WAITKIND_THREAD_EXITED: |
1319 | sprintf (buf, "w%x;", status->value.integer); | |
1320 | buf += strlen (buf); | |
1321 | buf = write_ptid (buf, ptid); | |
1322 | break; | |
f2faf941 PA |
1323 | case TARGET_WAITKIND_NO_RESUMED: |
1324 | sprintf (buf, "N"); | |
1325 | break; | |
5b1c542e PA |
1326 | default: |
1327 | error ("unhandled waitkind"); | |
1328 | break; | |
c906108c | 1329 | } |
c906108c SS |
1330 | } |
1331 | ||
1332 | void | |
fba45db2 | 1333 | decode_m_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr) |
c906108c SS |
1334 | { |
1335 | int i = 0, j = 0; | |
1336 | char ch; | |
1337 | *mem_addr_ptr = *len_ptr = 0; | |
1338 | ||
1339 | while ((ch = from[i++]) != ',') | |
1340 | { | |
1341 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1342 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1343 | } | |
1344 | ||
1345 | for (j = 0; j < 4; j++) | |
1346 | { | |
1347 | if ((ch = from[i++]) == 0) | |
1348 | break; | |
1349 | *len_ptr = *len_ptr << 4; | |
1350 | *len_ptr |= fromhex (ch) & 0x0f; | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | void | |
fba45db2 | 1355 | decode_M_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr, |
fa593d66 | 1356 | unsigned char **to_p) |
c906108c SS |
1357 | { |
1358 | int i = 0; | |
1359 | char ch; | |
1360 | *mem_addr_ptr = *len_ptr = 0; | |
1361 | ||
1362 | while ((ch = from[i++]) != ',') | |
1363 | { | |
1364 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1365 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1366 | } | |
1367 | ||
1368 | while ((ch = from[i++]) != ':') | |
1369 | { | |
1370 | *len_ptr = *len_ptr << 4; | |
1371 | *len_ptr |= fromhex (ch) & 0x0f; | |
1372 | } | |
1373 | ||
fa593d66 | 1374 | if (*to_p == NULL) |
224c3ddb | 1375 | *to_p = (unsigned char *) xmalloc (*len_ptr); |
fa593d66 | 1376 | |
a7191e8b | 1377 | hex2bin (&from[i++], *to_p, *len_ptr); |
c906108c | 1378 | } |
2f2893d9 | 1379 | |
01f9e8fa DJ |
1380 | int |
1381 | decode_X_packet (char *from, int packet_len, CORE_ADDR *mem_addr_ptr, | |
fa593d66 | 1382 | unsigned int *len_ptr, unsigned char **to_p) |
01f9e8fa DJ |
1383 | { |
1384 | int i = 0; | |
1385 | char ch; | |
1386 | *mem_addr_ptr = *len_ptr = 0; | |
1387 | ||
1388 | while ((ch = from[i++]) != ',') | |
1389 | { | |
1390 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1391 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1392 | } | |
1393 | ||
1394 | while ((ch = from[i++]) != ':') | |
1395 | { | |
1396 | *len_ptr = *len_ptr << 4; | |
1397 | *len_ptr |= fromhex (ch) & 0x0f; | |
1398 | } | |
1399 | ||
fa593d66 | 1400 | if (*to_p == NULL) |
224c3ddb | 1401 | *to_p = (unsigned char *) xmalloc (*len_ptr); |
fa593d66 | 1402 | |
01f9e8fa | 1403 | if (remote_unescape_input ((const gdb_byte *) &from[i], packet_len - i, |
fa593d66 | 1404 | *to_p, *len_ptr) != *len_ptr) |
01f9e8fa DJ |
1405 | return -1; |
1406 | ||
1407 | return 0; | |
1408 | } | |
1409 | ||
0e7f50da | 1410 | /* Decode a qXfer write request. */ |
d08aafef | 1411 | |
0e7f50da | 1412 | int |
d08aafef | 1413 | decode_xfer_write (char *buf, int packet_len, CORE_ADDR *offset, |
0e7f50da UW |
1414 | unsigned int *len, unsigned char *data) |
1415 | { | |
1416 | char ch; | |
d08aafef | 1417 | char *b = buf; |
0e7f50da UW |
1418 | |
1419 | /* Extract the offset. */ | |
1420 | *offset = 0; | |
1421 | while ((ch = *buf++) != ':') | |
1422 | { | |
1423 | *offset = *offset << 4; | |
1424 | *offset |= fromhex (ch) & 0x0f; | |
1425 | } | |
1426 | ||
1427 | /* Get encoded data. */ | |
d08aafef | 1428 | packet_len -= buf - b; |
0e7f50da UW |
1429 | *len = remote_unescape_input ((const gdb_byte *) buf, packet_len, |
1430 | data, packet_len); | |
1431 | return 0; | |
1432 | } | |
1433 | ||
08388c79 DE |
1434 | /* Decode the parameters of a qSearch:memory packet. */ |
1435 | ||
1436 | int | |
1437 | decode_search_memory_packet (const char *buf, int packet_len, | |
1438 | CORE_ADDR *start_addrp, | |
1439 | CORE_ADDR *search_space_lenp, | |
1440 | gdb_byte *pattern, unsigned int *pattern_lenp) | |
1441 | { | |
1442 | const char *p = buf; | |
1443 | ||
1444 | p = decode_address_to_semicolon (start_addrp, p); | |
1445 | p = decode_address_to_semicolon (search_space_lenp, p); | |
1446 | packet_len -= p - buf; | |
1447 | *pattern_lenp = remote_unescape_input ((const gdb_byte *) p, packet_len, | |
1448 | pattern, packet_len); | |
1449 | return 0; | |
1450 | } | |
1451 | ||
95954743 PA |
1452 | static void |
1453 | free_sym_cache (struct sym_cache *sym) | |
1454 | { | |
1455 | if (sym != NULL) | |
1456 | { | |
1457 | free (sym->name); | |
1458 | free (sym); | |
1459 | } | |
1460 | } | |
1461 | ||
1462 | void | |
1463 | clear_symbol_cache (struct sym_cache **symcache_p) | |
1464 | { | |
1465 | struct sym_cache *sym, *next; | |
1466 | ||
1467 | /* Check the cache first. */ | |
1468 | for (sym = *symcache_p; sym; sym = next) | |
1469 | { | |
1470 | next = sym->next; | |
1471 | free_sym_cache (sym); | |
1472 | } | |
1473 | ||
1474 | *symcache_p = NULL; | |
1475 | } | |
1476 | ||
9836d6ea PA |
1477 | /* Get the address of NAME, and return it in ADDRP if found. if |
1478 | MAY_ASK_GDB is false, assume symbol cache misses are failures. | |
fd500816 DJ |
1479 | Returns 1 if the symbol is found, 0 if it is not, -1 on error. */ |
1480 | ||
2f2893d9 | 1481 | int |
9836d6ea | 1482 | look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb) |
2f2893d9 | 1483 | { |
c12a5089 | 1484 | client_state &cs = get_client_state (); |
28170b88 | 1485 | char *p, *q; |
2f2893d9 | 1486 | int len; |
fd500816 | 1487 | struct sym_cache *sym; |
95954743 PA |
1488 | struct process_info *proc; |
1489 | ||
1490 | proc = current_process (); | |
fd500816 DJ |
1491 | |
1492 | /* Check the cache first. */ | |
95954743 | 1493 | for (sym = proc->symbol_cache; sym; sym = sym->next) |
fd500816 DJ |
1494 | if (strcmp (name, sym->name) == 0) |
1495 | { | |
1496 | *addrp = sym->addr; | |
1497 | return 1; | |
1498 | } | |
2f2893d9 | 1499 | |
9836d6ea PA |
1500 | /* It might not be an appropriate time to look up a symbol, |
1501 | e.g. while we're trying to fetch registers. */ | |
1502 | if (!may_ask_gdb) | |
ea025f5f DJ |
1503 | return 0; |
1504 | ||
2f2893d9 | 1505 | /* Send the request. */ |
c12a5089 SC |
1506 | strcpy (cs.own_buf, "qSymbol:"); |
1507 | bin2hex ((const gdb_byte *) name, cs.own_buf + strlen ("qSymbol:"), | |
971dc0b8 | 1508 | strlen (name)); |
c12a5089 | 1509 | if (putpkt (cs.own_buf) < 0) |
2f2893d9 DJ |
1510 | return -1; |
1511 | ||
1512 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
c12a5089 | 1513 | len = getpkt (cs.own_buf); |
2f2893d9 DJ |
1514 | if (len < 0) |
1515 | return -1; | |
1516 | ||
2bbe3cc1 DJ |
1517 | /* We ought to handle pretty much any packet at this point while we |
1518 | wait for the qSymbol "response". That requires re-entering the | |
1519 | main loop. For now, this is an adequate approximation; allow | |
28170b88 MK |
1520 | GDB to read from memory and handle 'v' packets (for vFile transfers) |
1521 | while it figures out the address of the symbol. */ | |
1522 | while (1) | |
2bbe3cc1 | 1523 | { |
c12a5089 | 1524 | if (cs.own_buf[0] == 'm') |
28170b88 MK |
1525 | { |
1526 | CORE_ADDR mem_addr; | |
1527 | unsigned char *mem_buf; | |
1528 | unsigned int mem_len; | |
1529 | ||
c12a5089 | 1530 | decode_m_packet (&cs.own_buf[1], &mem_addr, &mem_len); |
28170b88 MK |
1531 | mem_buf = (unsigned char *) xmalloc (mem_len); |
1532 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) | |
c12a5089 | 1533 | bin2hex (mem_buf, cs.own_buf, mem_len); |
28170b88 | 1534 | else |
c12a5089 | 1535 | write_enn (cs.own_buf); |
28170b88 | 1536 | free (mem_buf); |
c12a5089 | 1537 | if (putpkt (cs.own_buf) < 0) |
28170b88 MK |
1538 | return -1; |
1539 | } | |
c12a5089 | 1540 | else if (cs.own_buf[0] == 'v') |
28170b88 MK |
1541 | { |
1542 | int new_len = -1; | |
c12a5089 | 1543 | handle_v_requests (cs.own_buf, len, &new_len); |
28170b88 | 1544 | if (new_len != -1) |
c12a5089 | 1545 | putpkt_binary (cs.own_buf, new_len); |
28170b88 | 1546 | else |
c12a5089 | 1547 | putpkt (cs.own_buf); |
28170b88 | 1548 | } |
2bbe3cc1 | 1549 | else |
28170b88 | 1550 | break; |
c12a5089 | 1551 | len = getpkt (cs.own_buf); |
2bbe3cc1 DJ |
1552 | if (len < 0) |
1553 | return -1; | |
1554 | } | |
1b3f6016 | 1555 | |
c12a5089 | 1556 | if (!startswith (cs.own_buf, "qSymbol:")) |
2f2893d9 | 1557 | { |
422186a9 | 1558 | warning ("Malformed response to qSymbol, ignoring: %s", cs.own_buf); |
2f2893d9 DJ |
1559 | return -1; |
1560 | } | |
1561 | ||
c12a5089 | 1562 | p = cs.own_buf + strlen ("qSymbol:"); |
2f2893d9 DJ |
1563 | q = p; |
1564 | while (*q && *q != ':') | |
1565 | q++; | |
1566 | ||
1567 | /* Make sure we found a value for the symbol. */ | |
1568 | if (p == q || *q == '\0') | |
1569 | return 0; | |
1570 | ||
1571 | decode_address (addrp, p, q - p); | |
fd500816 DJ |
1572 | |
1573 | /* Save the symbol in our cache. */ | |
8d749320 | 1574 | sym = XNEW (struct sym_cache); |
bca929d3 | 1575 | sym->name = xstrdup (name); |
fd500816 | 1576 | sym->addr = *addrp; |
95954743 PA |
1577 | sym->next = proc->symbol_cache; |
1578 | proc->symbol_cache = sym; | |
fd500816 | 1579 | |
2f2893d9 DJ |
1580 | return 1; |
1581 | } | |
c74d0ad8 | 1582 | |
fa593d66 PA |
1583 | /* Relocate an instruction to execute at a different address. OLDLOC |
1584 | is the address in the inferior memory where the instruction to | |
1585 | relocate is currently at. On input, TO points to the destination | |
1586 | where we want the instruction to be copied (and possibly adjusted) | |
1587 | to. On output, it points to one past the end of the resulting | |
1588 | instruction(s). The effect of executing the instruction at TO | |
86a30030 | 1589 | shall be the same as if executing it at OLDLOC. For example, call |
fa593d66 PA |
1590 | instructions that implicitly push the return address on the stack |
1591 | should be adjusted to return to the instruction after OLDLOC; | |
1592 | relative branches, and other PC-relative instructions need the | |
1593 | offset adjusted; etc. Returns 0 on success, -1 on failure. */ | |
1594 | ||
1595 | int | |
1596 | relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc) | |
1597 | { | |
c12a5089 | 1598 | client_state &cs = get_client_state (); |
fa593d66 PA |
1599 | int len; |
1600 | ULONGEST written = 0; | |
1601 | ||
1602 | /* Send the request. */ | |
c12a5089 | 1603 | sprintf (cs.own_buf, "qRelocInsn:%s;%s", paddress (oldloc), |
fa593d66 | 1604 | paddress (*to)); |
c12a5089 | 1605 | if (putpkt (cs.own_buf) < 0) |
fa593d66 PA |
1606 | return -1; |
1607 | ||
1608 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
c12a5089 | 1609 | len = getpkt (cs.own_buf); |
fa593d66 PA |
1610 | if (len < 0) |
1611 | return -1; | |
1612 | ||
1613 | /* We ought to handle pretty much any packet at this point while we | |
1614 | wait for the qRelocInsn "response". That requires re-entering | |
1615 | the main loop. For now, this is an adequate approximation; allow | |
1616 | GDB to access memory. */ | |
c12a5089 | 1617 | while (cs.own_buf[0] == 'm' || cs.own_buf[0] == 'M' || cs.own_buf[0] == 'X') |
fa593d66 PA |
1618 | { |
1619 | CORE_ADDR mem_addr; | |
1620 | unsigned char *mem_buf = NULL; | |
1621 | unsigned int mem_len; | |
1622 | ||
c12a5089 | 1623 | if (cs.own_buf[0] == 'm') |
fa593d66 | 1624 | { |
c12a5089 | 1625 | decode_m_packet (&cs.own_buf[1], &mem_addr, &mem_len); |
224c3ddb | 1626 | mem_buf = (unsigned char *) xmalloc (mem_len); |
fa593d66 | 1627 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) |
c12a5089 | 1628 | bin2hex (mem_buf, cs.own_buf, mem_len); |
fa593d66 | 1629 | else |
c12a5089 | 1630 | write_enn (cs.own_buf); |
fa593d66 | 1631 | } |
c12a5089 | 1632 | else if (cs.own_buf[0] == 'X') |
fa593d66 | 1633 | { |
c12a5089 | 1634 | if (decode_X_packet (&cs.own_buf[1], len - 1, &mem_addr, |
fa593d66 | 1635 | &mem_len, &mem_buf) < 0 |
4196ab2a | 1636 | || target_write_memory (mem_addr, mem_buf, mem_len) != 0) |
c12a5089 | 1637 | write_enn (cs.own_buf); |
fa593d66 | 1638 | else |
c12a5089 | 1639 | write_ok (cs.own_buf); |
fa593d66 PA |
1640 | } |
1641 | else | |
1642 | { | |
c12a5089 | 1643 | decode_M_packet (&cs.own_buf[1], &mem_addr, &mem_len, &mem_buf); |
4196ab2a | 1644 | if (target_write_memory (mem_addr, mem_buf, mem_len) == 0) |
c12a5089 | 1645 | write_ok (cs.own_buf); |
fa593d66 | 1646 | else |
c12a5089 | 1647 | write_enn (cs.own_buf); |
fa593d66 PA |
1648 | } |
1649 | free (mem_buf); | |
c12a5089 | 1650 | if (putpkt (cs.own_buf) < 0) |
fa593d66 | 1651 | return -1; |
c12a5089 | 1652 | len = getpkt (cs.own_buf); |
fa593d66 PA |
1653 | if (len < 0) |
1654 | return -1; | |
1655 | } | |
1656 | ||
c12a5089 | 1657 | if (cs.own_buf[0] == 'E') |
fa593d66 | 1658 | { |
422186a9 | 1659 | warning ("An error occurred while relocating an instruction: %s", |
c12a5089 | 1660 | cs.own_buf); |
fa593d66 PA |
1661 | return -1; |
1662 | } | |
1663 | ||
c12a5089 | 1664 | if (!startswith (cs.own_buf, "qRelocInsn:")) |
fa593d66 | 1665 | { |
422186a9 | 1666 | warning ("Malformed response to qRelocInsn, ignoring: %s", |
c12a5089 | 1667 | cs.own_buf); |
fa593d66 PA |
1668 | return -1; |
1669 | } | |
1670 | ||
c12a5089 | 1671 | unpack_varlen_hex (cs.own_buf + strlen ("qRelocInsn:"), &written); |
fa593d66 PA |
1672 | |
1673 | *to += written; | |
1674 | return 0; | |
1675 | } | |
1676 | ||
c74d0ad8 | 1677 | void |
bce7165d | 1678 | monitor_output (const char *msg) |
c74d0ad8 | 1679 | { |
0a822afb | 1680 | int len = strlen (msg); |
224c3ddb | 1681 | char *buf = (char *) xmalloc (len * 2 + 2); |
c74d0ad8 DJ |
1682 | |
1683 | buf[0] = 'O'; | |
971dc0b8 | 1684 | bin2hex ((const gdb_byte *) msg, buf + 1, len); |
c74d0ad8 DJ |
1685 | |
1686 | putpkt (buf); | |
1687 | free (buf); | |
1688 | } | |
255e7678 | 1689 | |
0fb4aa4b | 1690 | #endif |