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c906108c | 1 | /* Remote utility routines for the remote server for GDB. |
213516ef | 2 | Copyright (C) 1986-2023 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 | |
f450004a DJ |
71 | #ifndef HAVE_SOCKLEN_T |
72 | typedef int socklen_t; | |
73 | #endif | |
74 | ||
0fb4aa4b PA |
75 | #ifndef IN_PROCESS_AGENT |
76 | ||
24b066ba DE |
77 | /* Extra value for readchar_callback. */ |
78 | enum { | |
79 | /* The callback is currently not scheduled. */ | |
80 | NOT_SCHEDULED = -1 | |
81 | }; | |
82 | ||
83 | /* Status of the readchar callback. | |
84 | Either NOT_SCHEDULED or the callback id. */ | |
85 | static int readchar_callback = NOT_SCHEDULED; | |
86 | ||
bc3b5632 | 87 | static int readchar (void); |
24b066ba DE |
88 | static void reset_readchar (void); |
89 | static void reschedule (void); | |
bc3b5632 | 90 | |
fd500816 DJ |
91 | /* A cache entry for a successfully looked-up symbol. */ |
92 | struct sym_cache | |
93 | { | |
95954743 | 94 | char *name; |
fd500816 DJ |
95 | CORE_ADDR addr; |
96 | struct sym_cache *next; | |
97 | }; | |
98 | ||
e0f9f062 DE |
99 | static int remote_is_stdio = 0; |
100 | ||
73944e9f TT |
101 | static int remote_desc = -1; |
102 | static int listen_desc = -1; | |
c906108c | 103 | |
0f48aa01 | 104 | #ifdef USE_WIN32API |
9c9d63b1 PM |
105 | /* gnulib wraps these as macros, undo them. */ |
106 | # undef read | |
107 | # undef write | |
108 | ||
68070c10 PA |
109 | # define read(fd, buf, len) recv (fd, (char *) buf, len, 0) |
110 | # define write(fd, buf, len) send (fd, (char *) buf, len, 0) | |
0f48aa01 DJ |
111 | #endif |
112 | ||
8336d594 PA |
113 | int |
114 | gdb_connected (void) | |
115 | { | |
73944e9f | 116 | return remote_desc != -1; |
8336d594 PA |
117 | } |
118 | ||
e0f9f062 DE |
119 | /* Return true if the remote connection is over stdio. */ |
120 | ||
121 | int | |
122 | remote_connection_is_stdio (void) | |
123 | { | |
124 | return remote_is_stdio; | |
125 | } | |
126 | ||
8336d594 PA |
127 | static void |
128 | enable_async_notification (int fd) | |
129 | { | |
130 | #if defined(F_SETFL) && defined (FASYNC) | |
131 | int save_fcntl_flags; | |
132 | ||
133 | save_fcntl_flags = fcntl (fd, F_GETFL, 0); | |
134 | fcntl (fd, F_SETFL, save_fcntl_flags | FASYNC); | |
135 | #if defined (F_SETOWN) | |
136 | fcntl (fd, F_SETOWN, getpid ()); | |
137 | #endif | |
138 | #endif | |
139 | } | |
140 | ||
55d7aec8 | 141 | static void |
8336d594 PA |
142 | handle_accept_event (int err, gdb_client_data client_data) |
143 | { | |
c7ab0aef SDJ |
144 | struct sockaddr_storage sockaddr; |
145 | socklen_t len = sizeof (sockaddr); | |
8336d594 | 146 | |
c058728c | 147 | threads_debug_printf ("handling possible accept event"); |
8336d594 | 148 | |
c7ab0aef | 149 | remote_desc = accept (listen_desc, (struct sockaddr *) &sockaddr, &len); |
8336d594 PA |
150 | if (remote_desc == -1) |
151 | perror_with_name ("Accept failed"); | |
152 | ||
153 | /* Enable TCP keep alive process. */ | |
c7ab0aef | 154 | socklen_t tmp = 1; |
8336d594 PA |
155 | setsockopt (remote_desc, SOL_SOCKET, SO_KEEPALIVE, |
156 | (char *) &tmp, sizeof (tmp)); | |
157 | ||
158 | /* Tell TCP not to delay small packets. This greatly speeds up | |
159 | interactive response. */ | |
160 | tmp = 1; | |
161 | setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY, | |
162 | (char *) &tmp, sizeof (tmp)); | |
163 | ||
164 | #ifndef USE_WIN32API | |
8336d594 PA |
165 | signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply |
166 | exits when the remote side dies. */ | |
03f2bd59 JK |
167 | #endif |
168 | ||
169 | if (run_once) | |
170 | { | |
171 | #ifndef USE_WIN32API | |
172 | close (listen_desc); /* No longer need this */ | |
8336d594 | 173 | #else |
03f2bd59 | 174 | closesocket (listen_desc); /* No longer need this */ |
8336d594 | 175 | #endif |
03f2bd59 | 176 | } |
8336d594 | 177 | |
03f2bd59 JK |
178 | /* Even if !RUN_ONCE no longer notice new connections. Still keep the |
179 | descriptor open for add_file_handler to wait for a new connection. */ | |
8336d594 PA |
180 | delete_file_handler (listen_desc); |
181 | ||
80e24d09 SM |
182 | /* Convert IP address to string. */ |
183 | char orig_host[GDB_NI_MAX_ADDR], orig_port[GDB_NI_MAX_PORT]; | |
c7ab0aef | 184 | |
80e24d09 SM |
185 | int r = getnameinfo ((struct sockaddr *) &sockaddr, len, |
186 | orig_host, sizeof (orig_host), | |
187 | orig_port, sizeof (orig_port), | |
188 | NI_NUMERICHOST | NI_NUMERICSERV); | |
c7ab0aef | 189 | |
80e24d09 SM |
190 | if (r != 0) |
191 | fprintf (stderr, _("Could not obtain remote address: %s\n"), | |
192 | gai_strerror (r)); | |
c7ab0aef | 193 | else |
80e24d09 SM |
194 | fprintf (stderr, _("Remote debugging from host %s, port %s\n"), |
195 | orig_host, orig_port); | |
8336d594 PA |
196 | |
197 | enable_async_notification (remote_desc); | |
198 | ||
199 | /* Register the event loop handler. */ | |
2554f6f5 | 200 | add_file_handler (remote_desc, handle_serial_event, NULL, "remote-net"); |
8336d594 PA |
201 | |
202 | /* We have a new GDB connection now. If we were disconnected | |
203 | tracing, there's a window where the target could report a stop | |
204 | event to the event loop, and since we have a connection now, we'd | |
205 | try to send vStopped notifications to GDB. But, don't do that | |
206 | until GDB as selected all-stop/non-stop, and has queried the | |
207 | threads' status ('?'). */ | |
208 | target_async (0); | |
8336d594 PA |
209 | } |
210 | ||
03f2bd59 JK |
211 | /* Prepare for a later connection to a remote debugger. |
212 | NAME is the filename used for communication. */ | |
213 | ||
214 | void | |
fb32b4f7 | 215 | remote_prepare (const char *name) |
03f2bd59 | 216 | { |
c12a5089 | 217 | client_state &cs = get_client_state (); |
03f2bd59 JK |
218 | #ifdef USE_WIN32API |
219 | static int winsock_initialized; | |
220 | #endif | |
03f2bd59 | 221 | socklen_t tmp; |
03f2bd59 | 222 | |
e0f9f062 DE |
223 | remote_is_stdio = 0; |
224 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
225 | { | |
226 | /* We need to record fact that we're using stdio sooner than the | |
227 | call to remote_open so start_inferior knows the connection is | |
228 | via stdio. */ | |
229 | remote_is_stdio = 1; | |
c12a5089 | 230 | cs.transport_is_reliable = 1; |
e0f9f062 DE |
231 | return; |
232 | } | |
233 | ||
c7ab0aef SDJ |
234 | struct addrinfo hint; |
235 | struct addrinfo *ainfo; | |
236 | ||
237 | memset (&hint, 0, sizeof (hint)); | |
238 | /* Assume no prefix will be passed, therefore we should use | |
239 | AF_UNSPEC. */ | |
240 | hint.ai_family = AF_UNSPEC; | |
241 | hint.ai_socktype = SOCK_STREAM; | |
242 | hint.ai_protocol = IPPROTO_TCP; | |
243 | ||
244 | parsed_connection_spec parsed | |
80e24d09 | 245 | = parse_connection_spec_without_prefix (name, &hint); |
c7ab0aef SDJ |
246 | |
247 | if (parsed.port_str.empty ()) | |
03f2bd59 | 248 | { |
c12a5089 | 249 | cs.transport_is_reliable = 0; |
03f2bd59 JK |
250 | return; |
251 | } | |
252 | ||
03f2bd59 JK |
253 | #ifdef USE_WIN32API |
254 | if (!winsock_initialized) | |
255 | { | |
256 | WSADATA wsad; | |
257 | ||
258 | WSAStartup (MAKEWORD (1, 0), &wsad); | |
259 | winsock_initialized = 1; | |
260 | } | |
261 | #endif | |
262 | ||
80e24d09 SM |
263 | int r = getaddrinfo (parsed.host_str.c_str (), parsed.port_str.c_str (), |
264 | &hint, &ainfo); | |
c7ab0aef | 265 | |
80e24d09 SM |
266 | if (r != 0) |
267 | error (_("%s: cannot resolve name: %s"), name, gai_strerror (r)); | |
c7ab0aef | 268 | |
80e24d09 | 269 | scoped_free_addrinfo freeaddrinfo (ainfo); |
c7ab0aef | 270 | |
80e24d09 | 271 | struct addrinfo *iter; |
c7ab0aef | 272 | |
80e24d09 | 273 | for (iter = ainfo; iter != NULL; iter = iter->ai_next) |
f19c7ff8 | 274 | { |
80e24d09 SM |
275 | listen_desc = gdb_socket_cloexec (iter->ai_family, iter->ai_socktype, |
276 | iter->ai_protocol); | |
f19c7ff8 | 277 | |
80e24d09 SM |
278 | if (listen_desc >= 0) |
279 | break; | |
280 | } | |
f19c7ff8 | 281 | |
80e24d09 SM |
282 | if (iter == NULL) |
283 | perror_with_name ("Can't open socket"); | |
f19c7ff8 | 284 | |
80e24d09 SM |
285 | /* Allow rapid reuse of this port. */ |
286 | tmp = 1; | |
287 | setsockopt (listen_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, | |
288 | sizeof (tmp)); | |
f19c7ff8 | 289 | |
80e24d09 SM |
290 | switch (iter->ai_family) |
291 | { | |
292 | case AF_INET: | |
293 | ((struct sockaddr_in *) iter->ai_addr)->sin_addr.s_addr = INADDR_ANY; | |
294 | break; | |
295 | case AF_INET6: | |
296 | ((struct sockaddr_in6 *) iter->ai_addr)->sin6_addr = in6addr_any; | |
297 | break; | |
298 | default: | |
f34652de | 299 | internal_error (_("Invalid 'ai_family' %d\n"), iter->ai_family); |
c7ab0aef | 300 | } |
03f2bd59 | 301 | |
80e24d09 | 302 | if (bind (listen_desc, iter->ai_addr, iter->ai_addrlen) != 0) |
03f2bd59 JK |
303 | perror_with_name ("Can't bind address"); |
304 | ||
c7ab0aef SDJ |
305 | if (listen (listen_desc, 1) != 0) |
306 | perror_with_name ("Can't listen on socket"); | |
307 | ||
c12a5089 | 308 | cs.transport_is_reliable = 1; |
03f2bd59 JK |
309 | } |
310 | ||
c906108c SS |
311 | /* Open a connection to a remote debugger. |
312 | NAME is the filename used for communication. */ | |
313 | ||
314 | void | |
fb32b4f7 | 315 | remote_open (const char *name) |
c906108c | 316 | { |
fb32b4f7 | 317 | const char *port_str; |
8264bb58 DJ |
318 | |
319 | port_str = strchr (name, ':'); | |
e0f9f062 | 320 | #ifdef USE_WIN32API |
8264bb58 | 321 | if (port_str == NULL) |
752312ba | 322 | error ("Only HOST:PORT is supported on this platform."); |
e0f9f062 DE |
323 | #endif |
324 | ||
325 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
326 | { | |
327 | fprintf (stderr, "Remote debugging using stdio\n"); | |
328 | ||
329 | /* Use stdin as the handle of the connection. | |
330 | We only select on reads, for example. */ | |
331 | remote_desc = fileno (stdin); | |
332 | ||
333 | enable_async_notification (remote_desc); | |
334 | ||
335 | /* Register the event loop handler. */ | |
2554f6f5 | 336 | add_file_handler (remote_desc, handle_serial_event, NULL, "remote-stdio"); |
e0f9f062 DE |
337 | } |
338 | #ifndef USE_WIN32API | |
339 | else if (port_str == NULL) | |
80e24d09 | 340 | { |
8264bb58 DJ |
341 | struct stat statbuf; |
342 | ||
343 | if (stat (name, &statbuf) == 0 | |
80e24d09 | 344 | && (S_ISCHR (statbuf.st_mode) || S_ISFIFO (statbuf.st_mode))) |
8264bb58 DJ |
345 | remote_desc = open (name, O_RDWR); |
346 | else | |
347 | { | |
348 | errno = EINVAL; | |
349 | remote_desc = -1; | |
350 | } | |
351 | ||
c906108c SS |
352 | if (remote_desc < 0) |
353 | perror_with_name ("Could not open remote device"); | |
354 | ||
726e1356 | 355 | #if HAVE_TERMIOS_H |
c906108c SS |
356 | { |
357 | struct termios termios; | |
c5aa993b | 358 | tcgetattr (remote_desc, &termios); |
c906108c SS |
359 | |
360 | termios.c_iflag = 0; | |
361 | termios.c_oflag = 0; | |
362 | termios.c_lflag = 0; | |
c5aa993b | 363 | termios.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 364 | termios.c_cflag |= CLOCAL | CS8; |
d0608e50 | 365 | termios.c_cc[VMIN] = 1; |
c906108c SS |
366 | termios.c_cc[VTIME] = 0; |
367 | ||
c5aa993b | 368 | tcsetattr (remote_desc, TCSANOW, &termios); |
c906108c SS |
369 | } |
370 | #endif | |
371 | ||
e641a1ca | 372 | fprintf (stderr, "Remote debugging using %s\n", name); |
a6f3e723 | 373 | |
8336d594 PA |
374 | enable_async_notification (remote_desc); |
375 | ||
376 | /* Register the event loop handler. */ | |
2554f6f5 SM |
377 | add_file_handler (remote_desc, handle_serial_event, NULL, |
378 | "remote-device"); | |
c906108c | 379 | } |
e0f9f062 | 380 | #endif /* USE_WIN32API */ |
c906108c SS |
381 | else |
382 | { | |
c7ab0aef SDJ |
383 | char listen_port[GDB_NI_MAX_PORT]; |
384 | struct sockaddr_storage sockaddr; | |
385 | socklen_t len = sizeof (sockaddr); | |
386 | ||
387 | if (getsockname (listen_desc, (struct sockaddr *) &sockaddr, &len) < 0) | |
03f2bd59 | 388 | perror_with_name ("Can't determine port"); |
6f8486da | 389 | |
c7ab0aef SDJ |
390 | int r = getnameinfo ((struct sockaddr *) &sockaddr, len, |
391 | NULL, 0, | |
392 | listen_port, sizeof (listen_port), | |
393 | NI_NUMERICSERV); | |
394 | ||
395 | if (r != 0) | |
396 | fprintf (stderr, _("Can't obtain port where we are listening: %s"), | |
397 | gai_strerror (r)); | |
398 | else | |
399 | fprintf (stderr, _("Listening on port %s\n"), listen_port); | |
400 | ||
b80864fb | 401 | fflush (stderr); |
6910d122 | 402 | |
8336d594 | 403 | /* Register the event loop handler. */ |
2554f6f5 SM |
404 | add_file_handler (listen_desc, handle_accept_event, NULL, |
405 | "remote-listen"); | |
c906108c | 406 | } |
c906108c SS |
407 | } |
408 | ||
409 | void | |
fba45db2 | 410 | remote_close (void) |
c906108c | 411 | { |
bd99dc85 PA |
412 | delete_file_handler (remote_desc); |
413 | ||
e849ea89 | 414 | disable_async_io (); |
8b207339 | 415 | |
b80864fb DJ |
416 | #ifdef USE_WIN32API |
417 | closesocket (remote_desc); | |
418 | #else | |
e0f9f062 DE |
419 | if (! remote_connection_is_stdio ()) |
420 | close (remote_desc); | |
b80864fb | 421 | #endif |
73944e9f | 422 | remote_desc = -1; |
24b066ba DE |
423 | |
424 | reset_readchar (); | |
c906108c SS |
425 | } |
426 | ||
0fb4aa4b PA |
427 | #endif |
428 | ||
0fb4aa4b PA |
429 | #ifndef IN_PROCESS_AGENT |
430 | ||
dae5f5cf | 431 | void |
2f2893d9 DJ |
432 | decode_address (CORE_ADDR *addrp, const char *start, int len) |
433 | { | |
434 | CORE_ADDR addr; | |
435 | char ch; | |
436 | int i; | |
437 | ||
438 | addr = 0; | |
439 | for (i = 0; i < len; i++) | |
440 | { | |
441 | ch = start[i]; | |
442 | addr = addr << 4; | |
443 | addr = addr | (fromhex (ch) & 0x0f); | |
444 | } | |
445 | *addrp = addr; | |
446 | } | |
447 | ||
89be2091 DJ |
448 | const char * |
449 | decode_address_to_semicolon (CORE_ADDR *addrp, const char *start) | |
450 | { | |
451 | const char *end; | |
452 | ||
453 | end = start; | |
454 | while (*end != '\0' && *end != ';') | |
455 | end++; | |
456 | ||
457 | decode_address (addrp, start, end - start); | |
458 | ||
459 | if (*end == ';') | |
460 | end++; | |
461 | return end; | |
462 | } | |
463 | ||
0fb4aa4b PA |
464 | #endif |
465 | ||
0fb4aa4b PA |
466 | #ifndef IN_PROCESS_AGENT |
467 | ||
5ffff7c1 DJ |
468 | /* Look for a sequence of characters which can be run-length encoded. |
469 | If there are any, update *CSUM and *P. Otherwise, output the | |
470 | single character. Return the number of characters consumed. */ | |
471 | ||
472 | static int | |
473 | try_rle (char *buf, int remaining, unsigned char *csum, char **p) | |
474 | { | |
475 | int n; | |
476 | ||
477 | /* Always output the character. */ | |
478 | *csum += buf[0]; | |
479 | *(*p)++ = buf[0]; | |
480 | ||
481 | /* Don't go past '~'. */ | |
482 | if (remaining > 97) | |
483 | remaining = 97; | |
484 | ||
485 | for (n = 1; n < remaining; n++) | |
486 | if (buf[n] != buf[0]) | |
487 | break; | |
488 | ||
489 | /* N is the index of the first character not the same as buf[0]. | |
490 | buf[0] is counted twice, so by decrementing N, we get the number | |
491 | of characters the RLE sequence will replace. */ | |
492 | n--; | |
493 | ||
494 | if (n < 3) | |
495 | return 1; | |
496 | ||
497 | /* Skip the frame characters. The manual says to skip '+' and '-' | |
498 | also, but there's no reason to. Unfortunately these two unusable | |
499 | characters double the encoded length of a four byte zero | |
500 | value. */ | |
501 | while (n + 29 == '$' || n + 29 == '#') | |
502 | n--; | |
503 | ||
504 | *csum += '*'; | |
505 | *(*p)++ = '*'; | |
506 | *csum += n + 29; | |
507 | *(*p)++ = n + 29; | |
508 | ||
509 | return n + 1; | |
510 | } | |
511 | ||
0fb4aa4b PA |
512 | #endif |
513 | ||
0fb4aa4b PA |
514 | #ifndef IN_PROCESS_AGENT |
515 | ||
95954743 PA |
516 | /* Write a PTID to BUF. Returns BUF+CHARACTERS_WRITTEN. */ |
517 | ||
518 | char * | |
519 | write_ptid (char *buf, ptid_t ptid) | |
520 | { | |
c12a5089 | 521 | client_state &cs = get_client_state (); |
95954743 PA |
522 | int pid, tid; |
523 | ||
c12a5089 | 524 | if (cs.multi_process) |
95954743 | 525 | { |
e99b03dc | 526 | pid = ptid.pid (); |
95954743 PA |
527 | if (pid < 0) |
528 | buf += sprintf (buf, "p-%x.", -pid); | |
529 | else | |
530 | buf += sprintf (buf, "p%x.", pid); | |
531 | } | |
e38504b3 | 532 | tid = ptid.lwp (); |
95954743 PA |
533 | if (tid < 0) |
534 | buf += sprintf (buf, "-%x", -tid); | |
535 | else | |
536 | buf += sprintf (buf, "%x", tid); | |
537 | ||
538 | return buf; | |
539 | } | |
540 | ||
5b3da067 | 541 | static ULONGEST |
256642e8 | 542 | hex_or_minus_one (const char *buf, const char **obuf) |
95954743 PA |
543 | { |
544 | ULONGEST ret; | |
545 | ||
61012eef | 546 | if (startswith (buf, "-1")) |
95954743 PA |
547 | { |
548 | ret = (ULONGEST) -1; | |
549 | buf += 2; | |
550 | } | |
551 | else | |
552 | buf = unpack_varlen_hex (buf, &ret); | |
553 | ||
554 | if (obuf) | |
555 | *obuf = buf; | |
556 | ||
557 | return ret; | |
558 | } | |
559 | ||
560 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
561 | passed the last parsed char. Returns null_ptid on error. */ | |
562 | ptid_t | |
256642e8 | 563 | read_ptid (const char *buf, const char **obuf) |
95954743 | 564 | { |
256642e8 PA |
565 | const char *p = buf; |
566 | const char *pp; | |
95954743 PA |
567 | ULONGEST pid = 0, tid = 0; |
568 | ||
569 | if (*p == 'p') | |
570 | { | |
571 | /* Multi-process ptid. */ | |
572 | pp = unpack_varlen_hex (p + 1, &pid); | |
573 | if (*pp != '.') | |
574 | error ("invalid remote ptid: %s\n", p); | |
575 | ||
576 | p = pp + 1; | |
577 | ||
578 | tid = hex_or_minus_one (p, &pp); | |
579 | ||
580 | if (obuf) | |
581 | *obuf = pp; | |
184ea2f7 | 582 | return ptid_t (pid, tid); |
95954743 PA |
583 | } |
584 | ||
585 | /* No multi-process. Just a tid. */ | |
586 | tid = hex_or_minus_one (p, &pp); | |
587 | ||
3d40fbb5 PA |
588 | /* Since GDB is not sending a process id (multi-process extensions |
589 | are off), then there's only one process. Default to the first in | |
590 | the list. */ | |
591 | pid = pid_of (get_first_process ()); | |
95954743 PA |
592 | |
593 | if (obuf) | |
594 | *obuf = pp; | |
184ea2f7 | 595 | return ptid_t (pid, tid); |
95954743 PA |
596 | } |
597 | ||
e0f9f062 DE |
598 | /* Write COUNT bytes in BUF to the client. |
599 | The result is the number of bytes written or -1 if error. | |
600 | This may return less than COUNT. */ | |
601 | ||
602 | static int | |
603 | write_prim (const void *buf, int count) | |
604 | { | |
605 | if (remote_connection_is_stdio ()) | |
606 | return write (fileno (stdout), buf, count); | |
607 | else | |
608 | return write (remote_desc, buf, count); | |
609 | } | |
610 | ||
611 | /* Read COUNT bytes from the client and store in BUF. | |
612 | The result is the number of bytes read or -1 if error. | |
613 | This may return less than COUNT. */ | |
614 | ||
615 | static int | |
616 | read_prim (void *buf, int count) | |
617 | { | |
618 | if (remote_connection_is_stdio ()) | |
619 | return read (fileno (stdin), buf, count); | |
620 | else | |
621 | return read (remote_desc, buf, count); | |
622 | } | |
623 | ||
c906108c | 624 | /* Send a packet to the remote machine, with error checking. |
01f9e8fa DJ |
625 | The data of the packet is in BUF, and the length of the |
626 | packet is in CNT. Returns >= 0 on success, -1 otherwise. */ | |
c906108c | 627 | |
bd99dc85 PA |
628 | static int |
629 | putpkt_binary_1 (char *buf, int cnt, int is_notif) | |
c906108c | 630 | { |
c12a5089 | 631 | client_state &cs = get_client_state (); |
c906108c SS |
632 | int i; |
633 | unsigned char csum = 0; | |
0a30fbc4 | 634 | char *buf2; |
c906108c | 635 | char *p; |
bc3b5632 | 636 | int cc; |
c906108c | 637 | |
224c3ddb | 638 | buf2 = (char *) xmalloc (strlen ("$") + cnt + strlen ("#nn") + 1); |
0a30fbc4 | 639 | |
c906108c SS |
640 | /* Copy the packet into buffer BUF2, encapsulating it |
641 | and giving it a checksum. */ | |
642 | ||
643 | p = buf2; | |
bd99dc85 PA |
644 | if (is_notif) |
645 | *p++ = '%'; | |
646 | else | |
647 | *p++ = '$'; | |
c906108c | 648 | |
5ffff7c1 DJ |
649 | for (i = 0; i < cnt;) |
650 | i += try_rle (buf + i, cnt - i, &csum, &p); | |
651 | ||
c906108c SS |
652 | *p++ = '#'; |
653 | *p++ = tohex ((csum >> 4) & 0xf); | |
654 | *p++ = tohex (csum & 0xf); | |
655 | ||
656 | *p = '\0'; | |
657 | ||
658 | /* Send it over and over until we get a positive ack. */ | |
659 | ||
660 | do | |
661 | { | |
e0f9f062 | 662 | if (write_prim (buf2, p - buf2) != p - buf2) |
c906108c SS |
663 | { |
664 | perror ("putpkt(write)"); | |
f88c79e6 | 665 | free (buf2); |
c906108c SS |
666 | return -1; |
667 | } | |
668 | ||
c12a5089 | 669 | if (cs.noack_mode || is_notif) |
a6f3e723 SL |
670 | { |
671 | /* Don't expect an ack then. */ | |
91f94053 SM |
672 | if (is_notif) |
673 | remote_debug_printf ("putpkt (\"%s\"); [notif]", buf2); | |
674 | else | |
675 | remote_debug_printf ("putpkt (\"%s\"); [noack mode]", buf2); | |
676 | ||
a6f3e723 SL |
677 | break; |
678 | } | |
679 | ||
91f94053 | 680 | remote_debug_printf ("putpkt (\"%s\"); [looking for ack]", buf2); |
0d62e5e8 | 681 | |
bc3b5632 | 682 | cc = readchar (); |
c906108c | 683 | |
bc3b5632 DE |
684 | if (cc < 0) |
685 | { | |
0a30fbc4 | 686 | free (buf2); |
c906108c SS |
687 | return -1; |
688 | } | |
0d62e5e8 | 689 | |
91f94053 | 690 | remote_debug_printf ("[received '%c' (0x%x)]", cc, cc); |
bc3b5632 | 691 | |
0d62e5e8 | 692 | /* Check for an input interrupt while we're here. */ |
0bfdf32f | 693 | if (cc == '\003' && current_thread != NULL) |
52405d85 | 694 | the_target->request_interrupt (); |
c906108c | 695 | } |
bc3b5632 | 696 | while (cc != '+'); |
c906108c | 697 | |
0a30fbc4 | 698 | free (buf2); |
c906108c SS |
699 | return 1; /* Success! */ |
700 | } | |
701 | ||
bd99dc85 PA |
702 | int |
703 | putpkt_binary (char *buf, int cnt) | |
704 | { | |
705 | return putpkt_binary_1 (buf, cnt, 0); | |
706 | } | |
707 | ||
01f9e8fa DJ |
708 | /* Send a packet to the remote machine, with error checking. The data |
709 | of the packet is in BUF, and the packet should be a NUL-terminated | |
710 | string. Returns >= 0 on success, -1 otherwise. */ | |
711 | ||
712 | int | |
713 | putpkt (char *buf) | |
714 | { | |
715 | return putpkt_binary (buf, strlen (buf)); | |
716 | } | |
717 | ||
bd99dc85 PA |
718 | int |
719 | putpkt_notif (char *buf) | |
720 | { | |
721 | return putpkt_binary_1 (buf, strlen (buf), 1); | |
722 | } | |
723 | ||
c906108c SS |
724 | /* Come here when we get an input interrupt from the remote side. This |
725 | interrupt should only be active while we are waiting for the child to do | |
bc3b5632 DE |
726 | something. Thus this assumes readchar:bufcnt is 0. |
727 | About the only thing that should come through is a ^C, which | |
ef57601b | 728 | will cause us to request child interruption. */ |
c906108c SS |
729 | |
730 | static void | |
0a30fbc4 | 731 | input_interrupt (int unused) |
c906108c | 732 | { |
cf30a8e1 C |
733 | fd_set readset; |
734 | struct timeval immediate = { 0, 0 }; | |
c906108c | 735 | |
cf30a8e1 C |
736 | /* Protect against spurious interrupts. This has been observed to |
737 | be a problem under NetBSD 1.4 and 1.5. */ | |
c906108c | 738 | |
cf30a8e1 C |
739 | FD_ZERO (&readset); |
740 | FD_SET (remote_desc, &readset); | |
741 | if (select (remote_desc + 1, &readset, 0, 0, &immediate) > 0) | |
c906108c | 742 | { |
cf30a8e1 | 743 | int cc; |
fd500816 | 744 | char c = 0; |
7390519e | 745 | |
e0f9f062 | 746 | cc = read_prim (&c, 1); |
c906108c | 747 | |
fafcc06a | 748 | if (cc == 0) |
cf30a8e1 | 749 | { |
fafcc06a SDJ |
750 | fprintf (stderr, "client connection closed\n"); |
751 | return; | |
752 | } | |
f0db101d | 753 | else if (cc != 1 || c != '\003') |
fafcc06a SDJ |
754 | { |
755 | fprintf (stderr, "input_interrupt, count = %d c = %d ", cc, c); | |
756 | if (isprint (c)) | |
757 | fprintf (stderr, "('%c')\n", c); | |
758 | else | |
759 | fprintf (stderr, "('\\x%02x')\n", c & 0xff); | |
cf30a8e1 C |
760 | return; |
761 | } | |
7390519e | 762 | |
52405d85 | 763 | the_target->request_interrupt (); |
cf30a8e1 | 764 | } |
c906108c | 765 | } |
7390519e PA |
766 | |
767 | /* Check if the remote side sent us an interrupt request (^C). */ | |
768 | void | |
769 | check_remote_input_interrupt_request (void) | |
770 | { | |
771 | /* This function may be called before establishing communications, | |
772 | therefore we need to validate the remote descriptor. */ | |
773 | ||
73944e9f | 774 | if (remote_desc == -1) |
7390519e PA |
775 | return; |
776 | ||
777 | input_interrupt (0); | |
778 | } | |
b80864fb | 779 | |
8b207339 YQ |
780 | /* Asynchronous I/O support. SIGIO must be unblocked when waiting, |
781 | in order to accept Control-C from the client, and must be blocked | |
782 | when talking to the client. */ | |
c906108c | 783 | |
a20d5e98 | 784 | static void |
8b207339 | 785 | block_unblock_async_io (int block) |
62ea82f5 | 786 | { |
b80864fb | 787 | #ifndef USE_WIN32API |
62ea82f5 | 788 | sigset_t sigio_set; |
a20d5e98 | 789 | |
62ea82f5 DJ |
790 | sigemptyset (&sigio_set); |
791 | sigaddset (&sigio_set, SIGIO); | |
21987b9c | 792 | gdb_sigmask (block ? SIG_BLOCK : SIG_UNBLOCK, &sigio_set, NULL); |
b80864fb | 793 | #endif |
62ea82f5 DJ |
794 | } |
795 | ||
fd500816 DJ |
796 | /* Current state of asynchronous I/O. */ |
797 | static int async_io_enabled; | |
798 | ||
799 | /* Enable asynchronous I/O. */ | |
c906108c | 800 | void |
fba45db2 | 801 | enable_async_io (void) |
c906108c | 802 | { |
fd500816 DJ |
803 | if (async_io_enabled) |
804 | return; | |
805 | ||
8b207339 YQ |
806 | block_unblock_async_io (0); |
807 | ||
fd500816 | 808 | async_io_enabled = 1; |
c906108c SS |
809 | } |
810 | ||
fd500816 | 811 | /* Disable asynchronous I/O. */ |
c906108c | 812 | void |
fba45db2 | 813 | disable_async_io (void) |
c906108c | 814 | { |
fd500816 DJ |
815 | if (!async_io_enabled) |
816 | return; | |
817 | ||
8b207339 YQ |
818 | block_unblock_async_io (1); |
819 | ||
fd500816 | 820 | async_io_enabled = 0; |
c906108c SS |
821 | } |
822 | ||
a20d5e98 DJ |
823 | void |
824 | initialize_async_io (void) | |
825 | { | |
8b207339 | 826 | /* Make sure that async I/O starts blocked. */ |
a20d5e98 DJ |
827 | async_io_enabled = 1; |
828 | disable_async_io (); | |
829 | ||
8b207339 YQ |
830 | /* Install the signal handler. */ |
831 | #ifndef USE_WIN32API | |
832 | signal (SIGIO, input_interrupt); | |
833 | #endif | |
a20d5e98 DJ |
834 | } |
835 | ||
24b066ba DE |
836 | /* Internal buffer used by readchar. |
837 | These are global to readchar because reschedule_remote needs to be | |
838 | able to tell whether the buffer is empty. */ | |
839 | ||
840 | static unsigned char readchar_buf[BUFSIZ]; | |
841 | static int readchar_bufcnt = 0; | |
842 | static unsigned char *readchar_bufp; | |
843 | ||
c906108c SS |
844 | /* Returns next char from remote GDB. -1 if error. */ |
845 | ||
846 | static int | |
fba45db2 | 847 | readchar (void) |
c906108c | 848 | { |
24b066ba | 849 | int ch; |
c906108c | 850 | |
24b066ba DE |
851 | if (readchar_bufcnt == 0) |
852 | { | |
e0f9f062 | 853 | readchar_bufcnt = read_prim (readchar_buf, sizeof (readchar_buf)); |
c906108c | 854 | |
24b066ba DE |
855 | if (readchar_bufcnt <= 0) |
856 | { | |
857 | if (readchar_bufcnt == 0) | |
fddedbe6 | 858 | { |
91f94053 | 859 | remote_debug_printf ("readchar: Got EOF"); |
fddedbe6 | 860 | } |
24b066ba DE |
861 | else |
862 | perror ("readchar"); | |
c906108c | 863 | |
24b066ba DE |
864 | return -1; |
865 | } | |
c906108c | 866 | |
24b066ba | 867 | readchar_bufp = readchar_buf; |
c906108c SS |
868 | } |
869 | ||
24b066ba DE |
870 | readchar_bufcnt--; |
871 | ch = *readchar_bufp++; | |
872 | reschedule (); | |
873 | return ch; | |
874 | } | |
875 | ||
876 | /* Reset the readchar state machine. */ | |
877 | ||
878 | static void | |
879 | reset_readchar (void) | |
880 | { | |
881 | readchar_bufcnt = 0; | |
882 | if (readchar_callback != NOT_SCHEDULED) | |
883 | { | |
55d7aec8 | 884 | delete_timer (readchar_callback); |
24b066ba DE |
885 | readchar_callback = NOT_SCHEDULED; |
886 | } | |
887 | } | |
888 | ||
889 | /* Process remaining data in readchar_buf. */ | |
890 | ||
55d7aec8 | 891 | static void |
24b066ba DE |
892 | process_remaining (void *context) |
893 | { | |
24b066ba DE |
894 | /* This is a one-shot event. */ |
895 | readchar_callback = NOT_SCHEDULED; | |
896 | ||
897 | if (readchar_bufcnt > 0) | |
55d7aec8 | 898 | handle_serial_event (0, NULL); |
24b066ba DE |
899 | } |
900 | ||
901 | /* If there is still data in the buffer, queue another event to process it, | |
902 | we can't sleep in select yet. */ | |
903 | ||
904 | static void | |
905 | reschedule (void) | |
906 | { | |
907 | if (readchar_bufcnt > 0 && readchar_callback == NOT_SCHEDULED) | |
55d7aec8 | 908 | readchar_callback = create_timer (0, process_remaining, NULL); |
c906108c SS |
909 | } |
910 | ||
911 | /* Read a packet from the remote machine, with error checking, | |
912 | and store it in BUF. Returns length of packet, or negative if error. */ | |
913 | ||
914 | int | |
fba45db2 | 915 | getpkt (char *buf) |
c906108c | 916 | { |
c12a5089 | 917 | client_state &cs = get_client_state (); |
c906108c SS |
918 | char *bp; |
919 | unsigned char csum, c1, c2; | |
920 | int c; | |
921 | ||
922 | while (1) | |
923 | { | |
924 | csum = 0; | |
925 | ||
926 | while (1) | |
927 | { | |
928 | c = readchar (); | |
5a0dd67a YQ |
929 | |
930 | /* The '\003' may appear before or after each packet, so | |
931 | check for an input interrupt. */ | |
932 | if (c == '\003') | |
933 | { | |
52405d85 | 934 | the_target->request_interrupt (); |
5a0dd67a YQ |
935 | continue; |
936 | } | |
937 | ||
c906108c SS |
938 | if (c == '$') |
939 | break; | |
91f94053 SM |
940 | |
941 | remote_debug_printf ("[getpkt: discarding char '%c']", c); | |
0d62e5e8 | 942 | |
c906108c SS |
943 | if (c < 0) |
944 | return -1; | |
945 | } | |
946 | ||
947 | bp = buf; | |
948 | while (1) | |
949 | { | |
950 | c = readchar (); | |
951 | if (c < 0) | |
952 | return -1; | |
953 | if (c == '#') | |
954 | break; | |
955 | *bp++ = c; | |
956 | csum += c; | |
957 | } | |
958 | *bp = 0; | |
959 | ||
960 | c1 = fromhex (readchar ()); | |
961 | c2 = fromhex (readchar ()); | |
c5aa993b | 962 | |
c906108c SS |
963 | if (csum == (c1 << 4) + c2) |
964 | break; | |
965 | ||
c12a5089 | 966 | if (cs.noack_mode) |
a6f3e723 | 967 | { |
493e2a69 MS |
968 | fprintf (stderr, |
969 | "Bad checksum, sentsum=0x%x, csum=0x%x, " | |
970 | "buf=%s [no-ack-mode, Bad medium?]\n", | |
a6f3e723 SL |
971 | (c1 << 4) + c2, csum, buf); |
972 | /* Not much we can do, GDB wasn't expecting an ack/nac. */ | |
973 | break; | |
974 | } | |
975 | ||
c906108c SS |
976 | fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n", |
977 | (c1 << 4) + c2, csum, buf); | |
e0f9f062 | 978 | if (write_prim ("-", 1) != 1) |
e581f2b4 | 979 | return -1; |
c906108c SS |
980 | } |
981 | ||
c12a5089 | 982 | if (!cs.noack_mode) |
0d62e5e8 | 983 | { |
91f94053 | 984 | remote_debug_printf ("getpkt (\"%s\"); [sending ack]", buf); |
c906108c | 985 | |
e0f9f062 | 986 | if (write_prim ("+", 1) != 1) |
e581f2b4 | 987 | return -1; |
c906108c | 988 | |
91f94053 | 989 | remote_debug_printf ("[sent ack]"); |
0d62e5e8 | 990 | } |
86b1f9c5 | 991 | else |
91f94053 | 992 | remote_debug_printf ("getpkt (\"%s\"); [no ack sent]", buf); |
0d62e5e8 | 993 | |
18879fef YQ |
994 | /* The readchar above may have already read a '\003' out of the socket |
995 | and moved it to the local buffer. For example, when GDB sends | |
996 | vCont;c immediately followed by interrupt (see | |
997 | gdb.base/interrupt-noterm.exp). As soon as we see the vCont;c, we'll | |
998 | resume the inferior and wait. Since we've already moved the '\003' | |
999 | to the local buffer, SIGIO won't help. In that case, if we don't | |
1000 | check for interrupt after the vCont;c packet, the interrupt character | |
1001 | would stay in the buffer unattended until after the next (unrelated) | |
1002 | stop. */ | |
1003 | while (readchar_bufcnt > 0 && *readchar_bufp == '\003') | |
1004 | { | |
1005 | /* Consume the interrupt character in the buffer. */ | |
1006 | readchar (); | |
52405d85 | 1007 | the_target->request_interrupt (); |
18879fef YQ |
1008 | } |
1009 | ||
c906108c SS |
1010 | return bp - buf; |
1011 | } | |
1012 | ||
1013 | void | |
fba45db2 | 1014 | write_ok (char *buf) |
c906108c SS |
1015 | { |
1016 | buf[0] = 'O'; | |
1017 | buf[1] = 'K'; | |
1018 | buf[2] = '\0'; | |
1019 | } | |
1020 | ||
1021 | void | |
fba45db2 | 1022 | write_enn (char *buf) |
c906108c | 1023 | { |
c89dc5d4 | 1024 | /* Some day, we should define the meanings of the error codes... */ |
c906108c | 1025 | buf[0] = 'E'; |
c89dc5d4 DJ |
1026 | buf[1] = '0'; |
1027 | buf[2] = '1'; | |
c906108c SS |
1028 | buf[3] = '\0'; |
1029 | } | |
1030 | ||
0fb4aa4b PA |
1031 | #endif |
1032 | ||
0fb4aa4b | 1033 | #ifndef IN_PROCESS_AGENT |
c906108c | 1034 | |
c906108c | 1035 | static char * |
442ea881 | 1036 | outreg (struct regcache *regcache, int regno, char *buf) |
c906108c | 1037 | { |
5c44784c JM |
1038 | if ((regno >> 12) != 0) |
1039 | *buf++ = tohex ((regno >> 12) & 0xf); | |
1040 | if ((regno >> 8) != 0) | |
1041 | *buf++ = tohex ((regno >> 8) & 0xf); | |
1042 | *buf++ = tohex ((regno >> 4) & 0xf); | |
c906108c SS |
1043 | *buf++ = tohex (regno & 0xf); |
1044 | *buf++ = ':'; | |
442ea881 | 1045 | collect_register_as_string (regcache, regno, buf); |
3aee8918 | 1046 | buf += 2 * register_size (regcache->tdesc, regno); |
c906108c SS |
1047 | *buf++ = ';'; |
1048 | ||
1049 | return buf; | |
1050 | } | |
1051 | ||
1052 | void | |
c272a98c | 1053 | prepare_resume_reply (char *buf, ptid_t ptid, const target_waitstatus &status) |
c906108c | 1054 | { |
c12a5089 | 1055 | client_state &cs = get_client_state (); |
94dd9fb7 TBA |
1056 | threads_debug_printf ("Writing resume reply for %s: %s", |
1057 | target_pid_to_str (ptid).c_str (), | |
1058 | status.to_string ().c_str ()); | |
c906108c | 1059 | |
c272a98c | 1060 | switch (status.kind ()) |
c906108c | 1061 | { |
5b1c542e | 1062 | case TARGET_WAITKIND_STOPPED: |
de0d863e | 1063 | case TARGET_WAITKIND_FORKED: |
c269dbdb | 1064 | case TARGET_WAITKIND_VFORKED: |
8228463c | 1065 | case TARGET_WAITKIND_VFORK_DONE: |
94585166 | 1066 | case TARGET_WAITKIND_EXECD: |
65706a29 | 1067 | case TARGET_WAITKIND_THREAD_CREATED: |
82075af2 JS |
1068 | case TARGET_WAITKIND_SYSCALL_ENTRY: |
1069 | case TARGET_WAITKIND_SYSCALL_RETURN: | |
5b1c542e | 1070 | { |
442ea881 | 1071 | struct regcache *regcache; |
04f0c03a | 1072 | char *buf_start = buf; |
e013ee27 | 1073 | |
c272a98c SM |
1074 | if ((status.kind () == TARGET_WAITKIND_FORKED && cs.report_fork_events) |
1075 | || (status.kind () == TARGET_WAITKIND_VFORKED | |
c12a5089 | 1076 | && cs.report_vfork_events)) |
de0d863e DB |
1077 | { |
1078 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
c272a98c | 1079 | const char *event = (status.kind () == TARGET_WAITKIND_FORKED |
c269dbdb | 1080 | ? "fork" : "vfork"); |
de0d863e | 1081 | |
c269dbdb | 1082 | sprintf (buf, "T%02x%s:", signal, event); |
de0d863e | 1083 | buf += strlen (buf); |
c272a98c | 1084 | buf = write_ptid (buf, status.child_ptid ()); |
de0d863e DB |
1085 | strcat (buf, ";"); |
1086 | } | |
c272a98c | 1087 | else if (status.kind () == TARGET_WAITKIND_VFORK_DONE |
c12a5089 | 1088 | && cs.report_vfork_events) |
8228463c PA |
1089 | { |
1090 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1091 | ||
1092 | sprintf (buf, "T%02xvforkdone:;", signal); | |
1093 | } | |
c272a98c | 1094 | else if (status.kind () == TARGET_WAITKIND_EXECD && cs.report_exec_events) |
94585166 DB |
1095 | { |
1096 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1097 | const char *event = "exec"; | |
1098 | char hexified_pathname[PATH_MAX * 2]; | |
1099 | ||
1100 | sprintf (buf, "T%02x%s:", signal, event); | |
1101 | buf += strlen (buf); | |
1102 | ||
1103 | /* Encode pathname to hexified format. */ | |
c272a98c | 1104 | bin2hex ((const gdb_byte *) status.execd_pathname (), |
94585166 | 1105 | hexified_pathname, |
c272a98c | 1106 | strlen (status.execd_pathname ())); |
94585166 DB |
1107 | |
1108 | sprintf (buf, "%s;", hexified_pathname); | |
94585166 DB |
1109 | buf += strlen (buf); |
1110 | } | |
c272a98c | 1111 | else if (status.kind () == TARGET_WAITKIND_THREAD_CREATED |
c12a5089 | 1112 | && cs.report_thread_events) |
65706a29 PA |
1113 | { |
1114 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1115 | ||
1116 | sprintf (buf, "T%02xcreate:;", signal); | |
1117 | } | |
c272a98c SM |
1118 | else if (status.kind () == TARGET_WAITKIND_SYSCALL_ENTRY |
1119 | || status.kind () == TARGET_WAITKIND_SYSCALL_RETURN) | |
82075af2 JS |
1120 | { |
1121 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
c272a98c | 1122 | const char *event = (status.kind () == TARGET_WAITKIND_SYSCALL_ENTRY |
82075af2 JS |
1123 | ? "syscall_entry" : "syscall_return"); |
1124 | ||
1125 | sprintf (buf, "T%02x%s:%x;", signal, event, | |
c272a98c | 1126 | status.syscall_number ()); |
82075af2 | 1127 | } |
de0d863e | 1128 | else |
c272a98c | 1129 | sprintf (buf, "T%02x", status.sig ()); |
de0d863e | 1130 | |
442131c1 AB |
1131 | if (disable_packet_T) |
1132 | { | |
1133 | /* This is a bit (OK, a lot) of a kludge, however, this isn't | |
1134 | really a user feature, but exists only so GDB can use the | |
1135 | gdbserver to test handling of the 'S' stop reply packet, so | |
1136 | we would rather this code be as simple as possible. | |
1137 | ||
1138 | By this point we've started to build the 'T' stop packet, | |
1139 | and it should look like 'Txx....' where 'x' is a hex digit. | |
1140 | An 'S' stop packet always looks like 'Sxx', so all we do | |
1141 | here is convert the buffer from a T packet to an S packet | |
1142 | and the avoid adding any extra content by breaking out. */ | |
04f0c03a PA |
1143 | gdb_assert (buf_start[0] == 'T'); |
1144 | gdb_assert (isxdigit (buf_start[1])); | |
1145 | gdb_assert (isxdigit (buf_start[2])); | |
4414150d | 1146 | buf_start[0] = 'S'; |
04f0c03a | 1147 | buf_start[3] = '\0'; |
442131c1 AB |
1148 | break; |
1149 | } | |
1150 | ||
5b1c542e | 1151 | buf += strlen (buf); |
e013ee27 | 1152 | |
24583e45 | 1153 | scoped_restore_current_thread restore_thread; |
e013ee27 | 1154 | |
5b6d1e4f | 1155 | switch_to_thread (the_target, ptid); |
e013ee27 | 1156 | |
0bfdf32f | 1157 | regcache = get_thread_regcache (current_thread, 1); |
442ea881 | 1158 | |
52405d85 | 1159 | if (the_target->stopped_by_watchpoint ()) |
5b1c542e PA |
1160 | { |
1161 | CORE_ADDR addr; | |
1162 | int i; | |
c906108c | 1163 | |
29f9a567 | 1164 | memcpy (buf, "watch:", 6); |
5b1c542e | 1165 | buf += 6; |
0d62e5e8 | 1166 | |
52405d85 | 1167 | addr = the_target->stopped_data_address (); |
255e7678 | 1168 | |
5b1c542e PA |
1169 | /* Convert each byte of the address into two hexadecimal |
1170 | chars. Note that we take sizeof (void *) instead of | |
1171 | sizeof (addr); this is to avoid sending a 64-bit | |
1172 | address to a 32-bit GDB. */ | |
1173 | for (i = sizeof (void *) * 2; i > 0; i--) | |
1174 | *buf++ = tohex ((addr >> (i - 1) * 4) & 0xf); | |
1175 | *buf++ = ';'; | |
1176 | } | |
c12a5089 | 1177 | else if (cs.swbreak_feature && target_stopped_by_sw_breakpoint ()) |
1ec68e26 PA |
1178 | { |
1179 | sprintf (buf, "swbreak:;"); | |
1180 | buf += strlen (buf); | |
1181 | } | |
c12a5089 | 1182 | else if (cs.hwbreak_feature && target_stopped_by_hw_breakpoint ()) |
1ec68e26 PA |
1183 | { |
1184 | sprintf (buf, "hwbreak:;"); | |
1185 | buf += strlen (buf); | |
1186 | } | |
5b1c542e | 1187 | |
6a65998a LM |
1188 | /* Handle the expedited registers. */ |
1189 | for (const std::string &expedited_reg : | |
1190 | current_target_desc ()->expedite_regs) | |
1191 | buf = outreg (regcache, find_regno (regcache->tdesc, | |
1192 | expedited_reg.c_str ()), buf); | |
5472f405 | 1193 | *buf = '\0'; |
5b1c542e PA |
1194 | |
1195 | /* Formerly, if the debugger had not used any thread features | |
1196 | we would not burden it with a thread status response. This | |
1197 | was for the benefit of GDB 4.13 and older. However, in | |
1198 | recent GDB versions the check (``if (cont_thread != 0)'') | |
33b5899f | 1199 | does not have the desired effect because of silliness in |
5b1c542e PA |
1200 | the way that the remote protocol handles specifying a |
1201 | thread. Since thread support relies on qSymbol support | |
1202 | anyway, assume GDB can handle threads. */ | |
1203 | ||
1204 | if (using_threads && !disable_packet_Tthread) | |
1205 | { | |
1206 | /* This if (1) ought to be unnecessary. But remote_wait | |
1207 | in GDB will claim this event belongs to inferior_ptid | |
1208 | if we do not specify a thread, and there's no way for | |
1209 | gdbserver to know what inferior_ptid is. */ | |
d7e15655 | 1210 | if (1 || cs.general_thread != ptid) |
5b1c542e | 1211 | { |
dc146f7c | 1212 | int core = -1; |
bd99dc85 PA |
1213 | /* In non-stop, don't change the general thread behind |
1214 | GDB's back. */ | |
1215 | if (!non_stop) | |
c12a5089 | 1216 | cs.general_thread = ptid; |
95954743 PA |
1217 | sprintf (buf, "thread:"); |
1218 | buf += strlen (buf); | |
1219 | buf = write_ptid (buf, ptid); | |
1220 | strcat (buf, ";"); | |
5b1c542e | 1221 | buf += strlen (buf); |
dc146f7c | 1222 | |
3e10640f YQ |
1223 | core = target_core_of_thread (ptid); |
1224 | ||
dc146f7c VP |
1225 | if (core != -1) |
1226 | { | |
1227 | sprintf (buf, "core:"); | |
1228 | buf += strlen (buf); | |
1229 | sprintf (buf, "%x", core); | |
1230 | strcat (buf, ";"); | |
1231 | buf += strlen (buf); | |
1232 | } | |
5b1c542e PA |
1233 | } |
1234 | } | |
1235 | ||
d171632f | 1236 | if (current_process ()->dlls_changed) |
5b1c542e PA |
1237 | { |
1238 | strcpy (buf, "library:;"); | |
1239 | buf += strlen (buf); | |
d171632f | 1240 | current_process ()->dlls_changed = false; |
5b1c542e | 1241 | } |
5b1c542e PA |
1242 | } |
1243 | break; | |
1244 | case TARGET_WAITKIND_EXITED: | |
c12a5089 | 1245 | if (cs.multi_process) |
95954743 | 1246 | sprintf (buf, "W%x;process:%x", |
c272a98c | 1247 | status.exit_status (), ptid.pid ()); |
95954743 | 1248 | else |
c272a98c | 1249 | sprintf (buf, "W%02x", status.exit_status ()); |
5b1c542e PA |
1250 | break; |
1251 | case TARGET_WAITKIND_SIGNALLED: | |
c12a5089 | 1252 | if (cs.multi_process) |
95954743 | 1253 | sprintf (buf, "X%x;process:%x", |
c272a98c | 1254 | status.sig (), ptid.pid ()); |
95954743 | 1255 | else |
c272a98c | 1256 | sprintf (buf, "X%02x", status.sig ()); |
5b1c542e | 1257 | break; |
65706a29 | 1258 | case TARGET_WAITKIND_THREAD_EXITED: |
c272a98c | 1259 | sprintf (buf, "w%x;", status.exit_status ()); |
65706a29 PA |
1260 | buf += strlen (buf); |
1261 | buf = write_ptid (buf, ptid); | |
1262 | break; | |
f2faf941 PA |
1263 | case TARGET_WAITKIND_NO_RESUMED: |
1264 | sprintf (buf, "N"); | |
1265 | break; | |
5b1c542e PA |
1266 | default: |
1267 | error ("unhandled waitkind"); | |
1268 | break; | |
c906108c | 1269 | } |
c906108c SS |
1270 | } |
1271 | ||
546b77fe LM |
1272 | /* See remote-utils.h. */ |
1273 | ||
1274 | const char * | |
1275 | decode_m_packet_params (const char *from, CORE_ADDR *mem_addr_ptr, | |
1276 | unsigned int *len_ptr, const char end_marker) | |
c906108c | 1277 | { |
546b77fe | 1278 | int i = 0; |
c906108c SS |
1279 | char ch; |
1280 | *mem_addr_ptr = *len_ptr = 0; | |
1281 | ||
1282 | while ((ch = from[i++]) != ',') | |
1283 | { | |
1284 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1285 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1286 | } | |
1287 | ||
546b77fe | 1288 | while ((ch = from[i++]) != end_marker) |
c906108c | 1289 | { |
c906108c SS |
1290 | *len_ptr = *len_ptr << 4; |
1291 | *len_ptr |= fromhex (ch) & 0x0f; | |
1292 | } | |
546b77fe LM |
1293 | |
1294 | return from + i; | |
c906108c SS |
1295 | } |
1296 | ||
1297 | void | |
546b77fe LM |
1298 | decode_m_packet (const char *from, CORE_ADDR *mem_addr_ptr, |
1299 | unsigned int *len_ptr) | |
c906108c | 1300 | { |
546b77fe LM |
1301 | decode_m_packet_params (from, mem_addr_ptr, len_ptr, '\0'); |
1302 | } | |
c906108c | 1303 | |
546b77fe LM |
1304 | void |
1305 | decode_M_packet (const char *from, CORE_ADDR *mem_addr_ptr, | |
1306 | unsigned int *len_ptr, unsigned char **to_p) | |
1307 | { | |
1308 | from = decode_m_packet_params (from, mem_addr_ptr, len_ptr, ':'); | |
c906108c | 1309 | |
fa593d66 | 1310 | if (*to_p == NULL) |
224c3ddb | 1311 | *to_p = (unsigned char *) xmalloc (*len_ptr); |
fa593d66 | 1312 | |
546b77fe | 1313 | hex2bin (from, *to_p, *len_ptr); |
c906108c | 1314 | } |
2f2893d9 | 1315 | |
01f9e8fa DJ |
1316 | int |
1317 | decode_X_packet (char *from, int packet_len, CORE_ADDR *mem_addr_ptr, | |
fa593d66 | 1318 | unsigned int *len_ptr, unsigned char **to_p) |
01f9e8fa DJ |
1319 | { |
1320 | int i = 0; | |
1321 | char ch; | |
1322 | *mem_addr_ptr = *len_ptr = 0; | |
1323 | ||
1324 | while ((ch = from[i++]) != ',') | |
1325 | { | |
1326 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1327 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1328 | } | |
1329 | ||
1330 | while ((ch = from[i++]) != ':') | |
1331 | { | |
1332 | *len_ptr = *len_ptr << 4; | |
1333 | *len_ptr |= fromhex (ch) & 0x0f; | |
1334 | } | |
1335 | ||
fa593d66 | 1336 | if (*to_p == NULL) |
224c3ddb | 1337 | *to_p = (unsigned char *) xmalloc (*len_ptr); |
fa593d66 | 1338 | |
01f9e8fa | 1339 | if (remote_unescape_input ((const gdb_byte *) &from[i], packet_len - i, |
fa593d66 | 1340 | *to_p, *len_ptr) != *len_ptr) |
01f9e8fa DJ |
1341 | return -1; |
1342 | ||
1343 | return 0; | |
1344 | } | |
1345 | ||
0e7f50da | 1346 | /* Decode a qXfer write request. */ |
d08aafef | 1347 | |
0e7f50da | 1348 | int |
d08aafef | 1349 | decode_xfer_write (char *buf, int packet_len, CORE_ADDR *offset, |
0e7f50da UW |
1350 | unsigned int *len, unsigned char *data) |
1351 | { | |
1352 | char ch; | |
d08aafef | 1353 | char *b = buf; |
0e7f50da UW |
1354 | |
1355 | /* Extract the offset. */ | |
1356 | *offset = 0; | |
1357 | while ((ch = *buf++) != ':') | |
1358 | { | |
1359 | *offset = *offset << 4; | |
1360 | *offset |= fromhex (ch) & 0x0f; | |
1361 | } | |
1362 | ||
1363 | /* Get encoded data. */ | |
d08aafef | 1364 | packet_len -= buf - b; |
0e7f50da UW |
1365 | *len = remote_unescape_input ((const gdb_byte *) buf, packet_len, |
1366 | data, packet_len); | |
1367 | return 0; | |
1368 | } | |
1369 | ||
08388c79 DE |
1370 | /* Decode the parameters of a qSearch:memory packet. */ |
1371 | ||
1372 | int | |
1373 | decode_search_memory_packet (const char *buf, int packet_len, | |
1374 | CORE_ADDR *start_addrp, | |
1375 | CORE_ADDR *search_space_lenp, | |
1376 | gdb_byte *pattern, unsigned int *pattern_lenp) | |
1377 | { | |
1378 | const char *p = buf; | |
1379 | ||
1380 | p = decode_address_to_semicolon (start_addrp, p); | |
1381 | p = decode_address_to_semicolon (search_space_lenp, p); | |
1382 | packet_len -= p - buf; | |
1383 | *pattern_lenp = remote_unescape_input ((const gdb_byte *) p, packet_len, | |
1384 | pattern, packet_len); | |
1385 | return 0; | |
1386 | } | |
1387 | ||
95954743 PA |
1388 | static void |
1389 | free_sym_cache (struct sym_cache *sym) | |
1390 | { | |
1391 | if (sym != NULL) | |
1392 | { | |
1393 | free (sym->name); | |
1394 | free (sym); | |
1395 | } | |
1396 | } | |
1397 | ||
1398 | void | |
1399 | clear_symbol_cache (struct sym_cache **symcache_p) | |
1400 | { | |
1401 | struct sym_cache *sym, *next; | |
1402 | ||
1403 | /* Check the cache first. */ | |
1404 | for (sym = *symcache_p; sym; sym = next) | |
1405 | { | |
1406 | next = sym->next; | |
1407 | free_sym_cache (sym); | |
1408 | } | |
1409 | ||
1410 | *symcache_p = NULL; | |
1411 | } | |
1412 | ||
9836d6ea PA |
1413 | /* Get the address of NAME, and return it in ADDRP if found. if |
1414 | MAY_ASK_GDB is false, assume symbol cache misses are failures. | |
fd500816 DJ |
1415 | Returns 1 if the symbol is found, 0 if it is not, -1 on error. */ |
1416 | ||
2f2893d9 | 1417 | int |
9836d6ea | 1418 | look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb) |
2f2893d9 | 1419 | { |
c12a5089 | 1420 | client_state &cs = get_client_state (); |
28170b88 | 1421 | char *p, *q; |
2f2893d9 | 1422 | int len; |
fd500816 | 1423 | struct sym_cache *sym; |
95954743 PA |
1424 | struct process_info *proc; |
1425 | ||
1426 | proc = current_process (); | |
fd500816 DJ |
1427 | |
1428 | /* Check the cache first. */ | |
95954743 | 1429 | for (sym = proc->symbol_cache; sym; sym = sym->next) |
fd500816 DJ |
1430 | if (strcmp (name, sym->name) == 0) |
1431 | { | |
1432 | *addrp = sym->addr; | |
1433 | return 1; | |
1434 | } | |
2f2893d9 | 1435 | |
9836d6ea PA |
1436 | /* It might not be an appropriate time to look up a symbol, |
1437 | e.g. while we're trying to fetch registers. */ | |
1438 | if (!may_ask_gdb) | |
ea025f5f DJ |
1439 | return 0; |
1440 | ||
2f2893d9 | 1441 | /* Send the request. */ |
c12a5089 SC |
1442 | strcpy (cs.own_buf, "qSymbol:"); |
1443 | bin2hex ((const gdb_byte *) name, cs.own_buf + strlen ("qSymbol:"), | |
971dc0b8 | 1444 | strlen (name)); |
c12a5089 | 1445 | if (putpkt (cs.own_buf) < 0) |
2f2893d9 DJ |
1446 | return -1; |
1447 | ||
1448 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
c12a5089 | 1449 | len = getpkt (cs.own_buf); |
2f2893d9 DJ |
1450 | if (len < 0) |
1451 | return -1; | |
1452 | ||
2bbe3cc1 DJ |
1453 | /* We ought to handle pretty much any packet at this point while we |
1454 | wait for the qSymbol "response". That requires re-entering the | |
1455 | main loop. For now, this is an adequate approximation; allow | |
28170b88 MK |
1456 | GDB to read from memory and handle 'v' packets (for vFile transfers) |
1457 | while it figures out the address of the symbol. */ | |
1458 | while (1) | |
2bbe3cc1 | 1459 | { |
c12a5089 | 1460 | if (cs.own_buf[0] == 'm') |
28170b88 MK |
1461 | { |
1462 | CORE_ADDR mem_addr; | |
1463 | unsigned char *mem_buf; | |
1464 | unsigned int mem_len; | |
1465 | ||
c12a5089 | 1466 | decode_m_packet (&cs.own_buf[1], &mem_addr, &mem_len); |
28170b88 MK |
1467 | mem_buf = (unsigned char *) xmalloc (mem_len); |
1468 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) | |
c12a5089 | 1469 | bin2hex (mem_buf, cs.own_buf, mem_len); |
28170b88 | 1470 | else |
c12a5089 | 1471 | write_enn (cs.own_buf); |
28170b88 | 1472 | free (mem_buf); |
c12a5089 | 1473 | if (putpkt (cs.own_buf) < 0) |
28170b88 MK |
1474 | return -1; |
1475 | } | |
c12a5089 | 1476 | else if (cs.own_buf[0] == 'v') |
28170b88 MK |
1477 | { |
1478 | int new_len = -1; | |
c12a5089 | 1479 | handle_v_requests (cs.own_buf, len, &new_len); |
28170b88 | 1480 | if (new_len != -1) |
c12a5089 | 1481 | putpkt_binary (cs.own_buf, new_len); |
28170b88 | 1482 | else |
c12a5089 | 1483 | putpkt (cs.own_buf); |
28170b88 | 1484 | } |
2bbe3cc1 | 1485 | else |
28170b88 | 1486 | break; |
c12a5089 | 1487 | len = getpkt (cs.own_buf); |
2bbe3cc1 DJ |
1488 | if (len < 0) |
1489 | return -1; | |
1490 | } | |
1b3f6016 | 1491 | |
c12a5089 | 1492 | if (!startswith (cs.own_buf, "qSymbol:")) |
2f2893d9 | 1493 | { |
422186a9 | 1494 | warning ("Malformed response to qSymbol, ignoring: %s", cs.own_buf); |
2f2893d9 DJ |
1495 | return -1; |
1496 | } | |
1497 | ||
c12a5089 | 1498 | p = cs.own_buf + strlen ("qSymbol:"); |
2f2893d9 DJ |
1499 | q = p; |
1500 | while (*q && *q != ':') | |
1501 | q++; | |
1502 | ||
1503 | /* Make sure we found a value for the symbol. */ | |
1504 | if (p == q || *q == '\0') | |
1505 | return 0; | |
1506 | ||
1507 | decode_address (addrp, p, q - p); | |
fd500816 DJ |
1508 | |
1509 | /* Save the symbol in our cache. */ | |
8d749320 | 1510 | sym = XNEW (struct sym_cache); |
bca929d3 | 1511 | sym->name = xstrdup (name); |
fd500816 | 1512 | sym->addr = *addrp; |
95954743 PA |
1513 | sym->next = proc->symbol_cache; |
1514 | proc->symbol_cache = sym; | |
fd500816 | 1515 | |
2f2893d9 DJ |
1516 | return 1; |
1517 | } | |
c74d0ad8 | 1518 | |
fa593d66 PA |
1519 | /* Relocate an instruction to execute at a different address. OLDLOC |
1520 | is the address in the inferior memory where the instruction to | |
1521 | relocate is currently at. On input, TO points to the destination | |
1522 | where we want the instruction to be copied (and possibly adjusted) | |
1523 | to. On output, it points to one past the end of the resulting | |
1524 | instruction(s). The effect of executing the instruction at TO | |
86a30030 | 1525 | shall be the same as if executing it at OLDLOC. For example, call |
fa593d66 PA |
1526 | instructions that implicitly push the return address on the stack |
1527 | should be adjusted to return to the instruction after OLDLOC; | |
1528 | relative branches, and other PC-relative instructions need the | |
1529 | offset adjusted; etc. Returns 0 on success, -1 on failure. */ | |
1530 | ||
1531 | int | |
1532 | relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc) | |
1533 | { | |
c12a5089 | 1534 | client_state &cs = get_client_state (); |
fa593d66 PA |
1535 | int len; |
1536 | ULONGEST written = 0; | |
1537 | ||
1538 | /* Send the request. */ | |
c12a5089 | 1539 | sprintf (cs.own_buf, "qRelocInsn:%s;%s", paddress (oldloc), |
fa593d66 | 1540 | paddress (*to)); |
c12a5089 | 1541 | if (putpkt (cs.own_buf) < 0) |
fa593d66 PA |
1542 | return -1; |
1543 | ||
1544 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
c12a5089 | 1545 | len = getpkt (cs.own_buf); |
fa593d66 PA |
1546 | if (len < 0) |
1547 | return -1; | |
1548 | ||
1549 | /* We ought to handle pretty much any packet at this point while we | |
1550 | wait for the qRelocInsn "response". That requires re-entering | |
1551 | the main loop. For now, this is an adequate approximation; allow | |
1552 | GDB to access memory. */ | |
c12a5089 | 1553 | while (cs.own_buf[0] == 'm' || cs.own_buf[0] == 'M' || cs.own_buf[0] == 'X') |
fa593d66 PA |
1554 | { |
1555 | CORE_ADDR mem_addr; | |
1556 | unsigned char *mem_buf = NULL; | |
1557 | unsigned int mem_len; | |
1558 | ||
c12a5089 | 1559 | if (cs.own_buf[0] == 'm') |
fa593d66 | 1560 | { |
c12a5089 | 1561 | decode_m_packet (&cs.own_buf[1], &mem_addr, &mem_len); |
224c3ddb | 1562 | mem_buf = (unsigned char *) xmalloc (mem_len); |
fa593d66 | 1563 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) |
c12a5089 | 1564 | bin2hex (mem_buf, cs.own_buf, mem_len); |
fa593d66 | 1565 | else |
c12a5089 | 1566 | write_enn (cs.own_buf); |
fa593d66 | 1567 | } |
c12a5089 | 1568 | else if (cs.own_buf[0] == 'X') |
fa593d66 | 1569 | { |
c12a5089 | 1570 | if (decode_X_packet (&cs.own_buf[1], len - 1, &mem_addr, |
fa593d66 | 1571 | &mem_len, &mem_buf) < 0 |
4196ab2a | 1572 | || target_write_memory (mem_addr, mem_buf, mem_len) != 0) |
c12a5089 | 1573 | write_enn (cs.own_buf); |
fa593d66 | 1574 | else |
c12a5089 | 1575 | write_ok (cs.own_buf); |
fa593d66 PA |
1576 | } |
1577 | else | |
1578 | { | |
c12a5089 | 1579 | decode_M_packet (&cs.own_buf[1], &mem_addr, &mem_len, &mem_buf); |
4196ab2a | 1580 | if (target_write_memory (mem_addr, mem_buf, mem_len) == 0) |
c12a5089 | 1581 | write_ok (cs.own_buf); |
fa593d66 | 1582 | else |
c12a5089 | 1583 | write_enn (cs.own_buf); |
fa593d66 PA |
1584 | } |
1585 | free (mem_buf); | |
c12a5089 | 1586 | if (putpkt (cs.own_buf) < 0) |
fa593d66 | 1587 | return -1; |
c12a5089 | 1588 | len = getpkt (cs.own_buf); |
fa593d66 PA |
1589 | if (len < 0) |
1590 | return -1; | |
1591 | } | |
1592 | ||
c12a5089 | 1593 | if (cs.own_buf[0] == 'E') |
fa593d66 | 1594 | { |
422186a9 | 1595 | warning ("An error occurred while relocating an instruction: %s", |
c12a5089 | 1596 | cs.own_buf); |
fa593d66 PA |
1597 | return -1; |
1598 | } | |
1599 | ||
c12a5089 | 1600 | if (!startswith (cs.own_buf, "qRelocInsn:")) |
fa593d66 | 1601 | { |
422186a9 | 1602 | warning ("Malformed response to qRelocInsn, ignoring: %s", |
c12a5089 | 1603 | cs.own_buf); |
fa593d66 PA |
1604 | return -1; |
1605 | } | |
1606 | ||
c12a5089 | 1607 | unpack_varlen_hex (cs.own_buf + strlen ("qRelocInsn:"), &written); |
fa593d66 PA |
1608 | |
1609 | *to += written; | |
1610 | return 0; | |
1611 | } | |
1612 | ||
c74d0ad8 | 1613 | void |
bce7165d | 1614 | monitor_output (const char *msg) |
c74d0ad8 | 1615 | { |
0a822afb | 1616 | int len = strlen (msg); |
224c3ddb | 1617 | char *buf = (char *) xmalloc (len * 2 + 2); |
c74d0ad8 DJ |
1618 | |
1619 | buf[0] = 'O'; | |
971dc0b8 | 1620 | bin2hex ((const gdb_byte *) msg, buf + 1, len); |
c74d0ad8 DJ |
1621 | |
1622 | putpkt (buf); | |
1623 | free (buf); | |
1624 | } | |
255e7678 | 1625 | |
0fb4aa4b | 1626 | #endif |