Commit | Line | Data |
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c906108c | 1 | /* Remote utility routines for the remote server for GDB. |
42a4f53d | 2 | Copyright (C) 1986-2019 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "server.h" | |
726e1356 PA |
20 | #if HAVE_TERMIOS_H |
21 | #include <termios.h> | |
22 | #endif | |
5b1c542e | 23 | #include "target.h" |
623b6bdf | 24 | #include "gdbthread.h" |
3aee8918 | 25 | #include "tdesc.h" |
799cdc37 | 26 | #include "dll.h" |
0747795c TT |
27 | #include "common/rsp-low.h" |
28 | #include "common/netstuff.h" | |
29 | #include "common/filestuff.h" | |
fafcc06a | 30 | #include <ctype.h> |
b80864fb | 31 | #if HAVE_SYS_IOCTL_H |
c906108c | 32 | #include <sys/ioctl.h> |
b80864fb | 33 | #endif |
68070c10 | 34 | #if HAVE_SYS_FILE_H |
c906108c | 35 | #include <sys/file.h> |
68070c10 | 36 | #endif |
9eb1356e PA |
37 | #if HAVE_NETINET_IN_H |
38 | #include <netinet/in.h> | |
39 | #endif | |
40 | #if HAVE_SYS_SOCKET_H | |
41 | #include <sys/socket.h> | |
42 | #endif | |
b80864fb | 43 | #if HAVE_NETDB_H |
c906108c | 44 | #include <netdb.h> |
b80864fb DJ |
45 | #endif |
46 | #if HAVE_NETINET_TCP_H | |
c906108c | 47 | #include <netinet/tcp.h> |
b80864fb DJ |
48 | #endif |
49 | #if HAVE_SYS_IOCTL_H | |
c906108c | 50 | #include <sys/ioctl.h> |
b80864fb | 51 | #endif |
68070c10 | 52 | #if HAVE_SIGNAL_H |
c906108c | 53 | #include <signal.h> |
68070c10 PA |
54 | #endif |
55 | #if HAVE_FCNTL_H | |
c906108c | 56 | #include <fcntl.h> |
68070c10 | 57 | #endif |
0747795c | 58 | #include "common/gdb_sys_time.h" |
cf30a8e1 | 59 | #include <unistd.h> |
b80864fb | 60 | #if HAVE_ARPA_INET_H |
0729219d | 61 | #include <arpa/inet.h> |
b80864fb | 62 | #endif |
53ce3c39 | 63 | #include <sys/stat.h> |
9eb1356e PA |
64 | |
65 | #if USE_WIN32API | |
41fa577f EZ |
66 | #if _WIN32_WINNT < 0x0501 |
67 | # undef _WIN32_WINNT | |
68 | # define _WIN32_WINNT 0x0501 | |
69 | #endif | |
70 | #include <ws2tcpip.h> | |
9eb1356e | 71 | #endif |
c906108c | 72 | |
ac8c974e AR |
73 | #if __QNX__ |
74 | #include <sys/iomgr.h> | |
75 | #endif /* __QNX__ */ | |
76 | ||
f450004a DJ |
77 | #ifndef HAVE_SOCKLEN_T |
78 | typedef int socklen_t; | |
79 | #endif | |
80 | ||
0fb4aa4b PA |
81 | #ifndef IN_PROCESS_AGENT |
82 | ||
7390519e PA |
83 | #if USE_WIN32API |
84 | # define INVALID_DESCRIPTOR INVALID_SOCKET | |
85 | #else | |
86 | # define INVALID_DESCRIPTOR -1 | |
87 | #endif | |
88 | ||
24b066ba DE |
89 | /* Extra value for readchar_callback. */ |
90 | enum { | |
91 | /* The callback is currently not scheduled. */ | |
92 | NOT_SCHEDULED = -1 | |
93 | }; | |
94 | ||
95 | /* Status of the readchar callback. | |
96 | Either NOT_SCHEDULED or the callback id. */ | |
97 | static int readchar_callback = NOT_SCHEDULED; | |
98 | ||
bc3b5632 | 99 | static int readchar (void); |
24b066ba DE |
100 | static void reset_readchar (void); |
101 | static void reschedule (void); | |
bc3b5632 | 102 | |
fd500816 DJ |
103 | /* A cache entry for a successfully looked-up symbol. */ |
104 | struct sym_cache | |
105 | { | |
95954743 | 106 | char *name; |
fd500816 DJ |
107 | CORE_ADDR addr; |
108 | struct sym_cache *next; | |
109 | }; | |
110 | ||
e0f9f062 DE |
111 | static int remote_is_stdio = 0; |
112 | ||
ec48365d PA |
113 | static gdb_fildes_t remote_desc = INVALID_DESCRIPTOR; |
114 | static gdb_fildes_t listen_desc = INVALID_DESCRIPTOR; | |
c906108c | 115 | |
0d62e5e8 DJ |
116 | /* FIXME headerize? */ |
117 | extern int using_threads; | |
118 | extern int debug_threads; | |
119 | ||
0f48aa01 | 120 | #ifdef USE_WIN32API |
68070c10 PA |
121 | # define read(fd, buf, len) recv (fd, (char *) buf, len, 0) |
122 | # define write(fd, buf, len) send (fd, (char *) buf, len, 0) | |
0f48aa01 DJ |
123 | #endif |
124 | ||
8336d594 PA |
125 | int |
126 | gdb_connected (void) | |
127 | { | |
128 | return remote_desc != INVALID_DESCRIPTOR; | |
129 | } | |
130 | ||
e0f9f062 DE |
131 | /* Return true if the remote connection is over stdio. */ |
132 | ||
133 | int | |
134 | remote_connection_is_stdio (void) | |
135 | { | |
136 | return remote_is_stdio; | |
137 | } | |
138 | ||
8336d594 PA |
139 | static void |
140 | enable_async_notification (int fd) | |
141 | { | |
142 | #if defined(F_SETFL) && defined (FASYNC) | |
143 | int save_fcntl_flags; | |
144 | ||
145 | save_fcntl_flags = fcntl (fd, F_GETFL, 0); | |
146 | fcntl (fd, F_SETFL, save_fcntl_flags | FASYNC); | |
147 | #if defined (F_SETOWN) | |
148 | fcntl (fd, F_SETOWN, getpid ()); | |
149 | #endif | |
150 | #endif | |
151 | } | |
152 | ||
153 | static int | |
154 | handle_accept_event (int err, gdb_client_data client_data) | |
155 | { | |
c7ab0aef SDJ |
156 | struct sockaddr_storage sockaddr; |
157 | socklen_t len = sizeof (sockaddr); | |
8336d594 PA |
158 | |
159 | if (debug_threads) | |
87ce2a04 | 160 | debug_printf ("handling possible accept event\n"); |
8336d594 | 161 | |
c7ab0aef | 162 | remote_desc = accept (listen_desc, (struct sockaddr *) &sockaddr, &len); |
8336d594 PA |
163 | if (remote_desc == -1) |
164 | perror_with_name ("Accept failed"); | |
165 | ||
166 | /* Enable TCP keep alive process. */ | |
c7ab0aef | 167 | socklen_t tmp = 1; |
8336d594 PA |
168 | setsockopt (remote_desc, SOL_SOCKET, SO_KEEPALIVE, |
169 | (char *) &tmp, sizeof (tmp)); | |
170 | ||
171 | /* Tell TCP not to delay small packets. This greatly speeds up | |
172 | interactive response. */ | |
173 | tmp = 1; | |
174 | setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY, | |
175 | (char *) &tmp, sizeof (tmp)); | |
176 | ||
177 | #ifndef USE_WIN32API | |
8336d594 PA |
178 | signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply |
179 | exits when the remote side dies. */ | |
03f2bd59 JK |
180 | #endif |
181 | ||
182 | if (run_once) | |
183 | { | |
184 | #ifndef USE_WIN32API | |
185 | close (listen_desc); /* No longer need this */ | |
8336d594 | 186 | #else |
03f2bd59 | 187 | closesocket (listen_desc); /* No longer need this */ |
8336d594 | 188 | #endif |
03f2bd59 | 189 | } |
8336d594 | 190 | |
03f2bd59 JK |
191 | /* Even if !RUN_ONCE no longer notice new connections. Still keep the |
192 | descriptor open for add_file_handler to wait for a new connection. */ | |
8336d594 PA |
193 | delete_file_handler (listen_desc); |
194 | ||
80e24d09 SM |
195 | /* Convert IP address to string. */ |
196 | char orig_host[GDB_NI_MAX_ADDR], orig_port[GDB_NI_MAX_PORT]; | |
c7ab0aef | 197 | |
80e24d09 SM |
198 | int r = getnameinfo ((struct sockaddr *) &sockaddr, len, |
199 | orig_host, sizeof (orig_host), | |
200 | orig_port, sizeof (orig_port), | |
201 | NI_NUMERICHOST | NI_NUMERICSERV); | |
c7ab0aef | 202 | |
80e24d09 SM |
203 | if (r != 0) |
204 | fprintf (stderr, _("Could not obtain remote address: %s\n"), | |
205 | gai_strerror (r)); | |
c7ab0aef | 206 | else |
80e24d09 SM |
207 | fprintf (stderr, _("Remote debugging from host %s, port %s\n"), |
208 | orig_host, orig_port); | |
8336d594 PA |
209 | |
210 | enable_async_notification (remote_desc); | |
211 | ||
212 | /* Register the event loop handler. */ | |
213 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
214 | ||
215 | /* We have a new GDB connection now. If we were disconnected | |
216 | tracing, there's a window where the target could report a stop | |
217 | event to the event loop, and since we have a connection now, we'd | |
218 | try to send vStopped notifications to GDB. But, don't do that | |
219 | until GDB as selected all-stop/non-stop, and has queried the | |
220 | threads' status ('?'). */ | |
221 | target_async (0); | |
222 | ||
223 | return 0; | |
224 | } | |
225 | ||
03f2bd59 JK |
226 | /* Prepare for a later connection to a remote debugger. |
227 | NAME is the filename used for communication. */ | |
228 | ||
229 | void | |
fb32b4f7 | 230 | remote_prepare (const char *name) |
03f2bd59 | 231 | { |
c12a5089 | 232 | client_state &cs = get_client_state (); |
03f2bd59 JK |
233 | #ifdef USE_WIN32API |
234 | static int winsock_initialized; | |
235 | #endif | |
03f2bd59 | 236 | socklen_t tmp; |
03f2bd59 | 237 | |
e0f9f062 DE |
238 | remote_is_stdio = 0; |
239 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
240 | { | |
241 | /* We need to record fact that we're using stdio sooner than the | |
242 | call to remote_open so start_inferior knows the connection is | |
243 | via stdio. */ | |
244 | remote_is_stdio = 1; | |
c12a5089 | 245 | cs.transport_is_reliable = 1; |
e0f9f062 DE |
246 | return; |
247 | } | |
248 | ||
c7ab0aef SDJ |
249 | struct addrinfo hint; |
250 | struct addrinfo *ainfo; | |
251 | ||
252 | memset (&hint, 0, sizeof (hint)); | |
253 | /* Assume no prefix will be passed, therefore we should use | |
254 | AF_UNSPEC. */ | |
255 | hint.ai_family = AF_UNSPEC; | |
256 | hint.ai_socktype = SOCK_STREAM; | |
257 | hint.ai_protocol = IPPROTO_TCP; | |
258 | ||
259 | parsed_connection_spec parsed | |
80e24d09 | 260 | = parse_connection_spec_without_prefix (name, &hint); |
c7ab0aef SDJ |
261 | |
262 | if (parsed.port_str.empty ()) | |
03f2bd59 | 263 | { |
c12a5089 | 264 | cs.transport_is_reliable = 0; |
03f2bd59 JK |
265 | return; |
266 | } | |
267 | ||
03f2bd59 JK |
268 | #ifdef USE_WIN32API |
269 | if (!winsock_initialized) | |
270 | { | |
271 | WSADATA wsad; | |
272 | ||
273 | WSAStartup (MAKEWORD (1, 0), &wsad); | |
274 | winsock_initialized = 1; | |
275 | } | |
276 | #endif | |
277 | ||
80e24d09 SM |
278 | int r = getaddrinfo (parsed.host_str.c_str (), parsed.port_str.c_str (), |
279 | &hint, &ainfo); | |
c7ab0aef | 280 | |
80e24d09 SM |
281 | if (r != 0) |
282 | error (_("%s: cannot resolve name: %s"), name, gai_strerror (r)); | |
c7ab0aef | 283 | |
80e24d09 | 284 | scoped_free_addrinfo freeaddrinfo (ainfo); |
c7ab0aef | 285 | |
80e24d09 | 286 | struct addrinfo *iter; |
c7ab0aef | 287 | |
80e24d09 | 288 | for (iter = ainfo; iter != NULL; iter = iter->ai_next) |
f19c7ff8 | 289 | { |
80e24d09 SM |
290 | listen_desc = gdb_socket_cloexec (iter->ai_family, iter->ai_socktype, |
291 | iter->ai_protocol); | |
f19c7ff8 | 292 | |
80e24d09 SM |
293 | if (listen_desc >= 0) |
294 | break; | |
295 | } | |
f19c7ff8 | 296 | |
80e24d09 SM |
297 | if (iter == NULL) |
298 | perror_with_name ("Can't open socket"); | |
f19c7ff8 | 299 | |
80e24d09 SM |
300 | /* Allow rapid reuse of this port. */ |
301 | tmp = 1; | |
302 | setsockopt (listen_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, | |
303 | sizeof (tmp)); | |
f19c7ff8 | 304 | |
80e24d09 SM |
305 | switch (iter->ai_family) |
306 | { | |
307 | case AF_INET: | |
308 | ((struct sockaddr_in *) iter->ai_addr)->sin_addr.s_addr = INADDR_ANY; | |
309 | break; | |
310 | case AF_INET6: | |
311 | ((struct sockaddr_in6 *) iter->ai_addr)->sin6_addr = in6addr_any; | |
312 | break; | |
313 | default: | |
314 | internal_error (__FILE__, __LINE__, | |
315 | _("Invalid 'ai_family' %d\n"), iter->ai_family); | |
c7ab0aef | 316 | } |
03f2bd59 | 317 | |
80e24d09 | 318 | if (bind (listen_desc, iter->ai_addr, iter->ai_addrlen) != 0) |
03f2bd59 JK |
319 | perror_with_name ("Can't bind address"); |
320 | ||
c7ab0aef SDJ |
321 | if (listen (listen_desc, 1) != 0) |
322 | perror_with_name ("Can't listen on socket"); | |
323 | ||
c12a5089 | 324 | cs.transport_is_reliable = 1; |
03f2bd59 JK |
325 | } |
326 | ||
c906108c SS |
327 | /* Open a connection to a remote debugger. |
328 | NAME is the filename used for communication. */ | |
329 | ||
330 | void | |
fb32b4f7 | 331 | remote_open (const char *name) |
c906108c | 332 | { |
fb32b4f7 | 333 | const char *port_str; |
8264bb58 DJ |
334 | |
335 | port_str = strchr (name, ':'); | |
e0f9f062 | 336 | #ifdef USE_WIN32API |
8264bb58 | 337 | if (port_str == NULL) |
752312ba | 338 | error ("Only HOST:PORT is supported on this platform."); |
e0f9f062 DE |
339 | #endif |
340 | ||
341 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
342 | { | |
343 | fprintf (stderr, "Remote debugging using stdio\n"); | |
344 | ||
345 | /* Use stdin as the handle of the connection. | |
346 | We only select on reads, for example. */ | |
347 | remote_desc = fileno (stdin); | |
348 | ||
349 | enable_async_notification (remote_desc); | |
350 | ||
351 | /* Register the event loop handler. */ | |
352 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
353 | } | |
354 | #ifndef USE_WIN32API | |
355 | else if (port_str == NULL) | |
80e24d09 | 356 | { |
8264bb58 DJ |
357 | struct stat statbuf; |
358 | ||
359 | if (stat (name, &statbuf) == 0 | |
80e24d09 | 360 | && (S_ISCHR (statbuf.st_mode) || S_ISFIFO (statbuf.st_mode))) |
8264bb58 DJ |
361 | remote_desc = open (name, O_RDWR); |
362 | else | |
363 | { | |
364 | errno = EINVAL; | |
365 | remote_desc = -1; | |
366 | } | |
367 | ||
c906108c SS |
368 | if (remote_desc < 0) |
369 | perror_with_name ("Could not open remote device"); | |
370 | ||
726e1356 | 371 | #if HAVE_TERMIOS_H |
c906108c SS |
372 | { |
373 | struct termios termios; | |
c5aa993b | 374 | tcgetattr (remote_desc, &termios); |
c906108c SS |
375 | |
376 | termios.c_iflag = 0; | |
377 | termios.c_oflag = 0; | |
378 | termios.c_lflag = 0; | |
c5aa993b | 379 | termios.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 380 | termios.c_cflag |= CLOCAL | CS8; |
d0608e50 | 381 | termios.c_cc[VMIN] = 1; |
c906108c SS |
382 | termios.c_cc[VTIME] = 0; |
383 | ||
c5aa993b | 384 | tcsetattr (remote_desc, TCSANOW, &termios); |
c906108c SS |
385 | } |
386 | #endif | |
387 | ||
e641a1ca | 388 | fprintf (stderr, "Remote debugging using %s\n", name); |
a6f3e723 | 389 | |
8336d594 PA |
390 | enable_async_notification (remote_desc); |
391 | ||
392 | /* Register the event loop handler. */ | |
393 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
c906108c | 394 | } |
e0f9f062 | 395 | #endif /* USE_WIN32API */ |
c906108c SS |
396 | else |
397 | { | |
c7ab0aef SDJ |
398 | char listen_port[GDB_NI_MAX_PORT]; |
399 | struct sockaddr_storage sockaddr; | |
400 | socklen_t len = sizeof (sockaddr); | |
401 | ||
402 | if (getsockname (listen_desc, (struct sockaddr *) &sockaddr, &len) < 0) | |
03f2bd59 | 403 | perror_with_name ("Can't determine port"); |
6f8486da | 404 | |
c7ab0aef SDJ |
405 | int r = getnameinfo ((struct sockaddr *) &sockaddr, len, |
406 | NULL, 0, | |
407 | listen_port, sizeof (listen_port), | |
408 | NI_NUMERICSERV); | |
409 | ||
410 | if (r != 0) | |
411 | fprintf (stderr, _("Can't obtain port where we are listening: %s"), | |
412 | gai_strerror (r)); | |
413 | else | |
414 | fprintf (stderr, _("Listening on port %s\n"), listen_port); | |
415 | ||
b80864fb | 416 | fflush (stderr); |
6910d122 | 417 | |
8336d594 PA |
418 | /* Register the event loop handler. */ |
419 | add_file_handler (listen_desc, handle_accept_event, NULL); | |
c906108c | 420 | } |
c906108c SS |
421 | } |
422 | ||
423 | void | |
fba45db2 | 424 | remote_close (void) |
c906108c | 425 | { |
bd99dc85 PA |
426 | delete_file_handler (remote_desc); |
427 | ||
e849ea89 | 428 | disable_async_io (); |
8b207339 | 429 | |
b80864fb DJ |
430 | #ifdef USE_WIN32API |
431 | closesocket (remote_desc); | |
432 | #else | |
e0f9f062 DE |
433 | if (! remote_connection_is_stdio ()) |
434 | close (remote_desc); | |
b80864fb | 435 | #endif |
8336d594 | 436 | remote_desc = INVALID_DESCRIPTOR; |
24b066ba DE |
437 | |
438 | reset_readchar (); | |
c906108c SS |
439 | } |
440 | ||
0fb4aa4b PA |
441 | #endif |
442 | ||
0fb4aa4b PA |
443 | #ifndef IN_PROCESS_AGENT |
444 | ||
dae5f5cf | 445 | void |
2f2893d9 DJ |
446 | decode_address (CORE_ADDR *addrp, const char *start, int len) |
447 | { | |
448 | CORE_ADDR addr; | |
449 | char ch; | |
450 | int i; | |
451 | ||
452 | addr = 0; | |
453 | for (i = 0; i < len; i++) | |
454 | { | |
455 | ch = start[i]; | |
456 | addr = addr << 4; | |
457 | addr = addr | (fromhex (ch) & 0x0f); | |
458 | } | |
459 | *addrp = addr; | |
460 | } | |
461 | ||
89be2091 DJ |
462 | const char * |
463 | decode_address_to_semicolon (CORE_ADDR *addrp, const char *start) | |
464 | { | |
465 | const char *end; | |
466 | ||
467 | end = start; | |
468 | while (*end != '\0' && *end != ';') | |
469 | end++; | |
470 | ||
471 | decode_address (addrp, start, end - start); | |
472 | ||
473 | if (*end == ';') | |
474 | end++; | |
475 | return end; | |
476 | } | |
477 | ||
0fb4aa4b PA |
478 | #endif |
479 | ||
0fb4aa4b PA |
480 | #ifndef IN_PROCESS_AGENT |
481 | ||
5ffff7c1 DJ |
482 | /* Look for a sequence of characters which can be run-length encoded. |
483 | If there are any, update *CSUM and *P. Otherwise, output the | |
484 | single character. Return the number of characters consumed. */ | |
485 | ||
486 | static int | |
487 | try_rle (char *buf, int remaining, unsigned char *csum, char **p) | |
488 | { | |
489 | int n; | |
490 | ||
491 | /* Always output the character. */ | |
492 | *csum += buf[0]; | |
493 | *(*p)++ = buf[0]; | |
494 | ||
495 | /* Don't go past '~'. */ | |
496 | if (remaining > 97) | |
497 | remaining = 97; | |
498 | ||
499 | for (n = 1; n < remaining; n++) | |
500 | if (buf[n] != buf[0]) | |
501 | break; | |
502 | ||
503 | /* N is the index of the first character not the same as buf[0]. | |
504 | buf[0] is counted twice, so by decrementing N, we get the number | |
505 | of characters the RLE sequence will replace. */ | |
506 | n--; | |
507 | ||
508 | if (n < 3) | |
509 | return 1; | |
510 | ||
511 | /* Skip the frame characters. The manual says to skip '+' and '-' | |
512 | also, but there's no reason to. Unfortunately these two unusable | |
513 | characters double the encoded length of a four byte zero | |
514 | value. */ | |
515 | while (n + 29 == '$' || n + 29 == '#') | |
516 | n--; | |
517 | ||
518 | *csum += '*'; | |
519 | *(*p)++ = '*'; | |
520 | *csum += n + 29; | |
521 | *(*p)++ = n + 29; | |
522 | ||
523 | return n + 1; | |
524 | } | |
525 | ||
0fb4aa4b PA |
526 | #endif |
527 | ||
0fb4aa4b PA |
528 | #ifndef IN_PROCESS_AGENT |
529 | ||
95954743 PA |
530 | /* Write a PTID to BUF. Returns BUF+CHARACTERS_WRITTEN. */ |
531 | ||
532 | char * | |
533 | write_ptid (char *buf, ptid_t ptid) | |
534 | { | |
c12a5089 | 535 | client_state &cs = get_client_state (); |
95954743 PA |
536 | int pid, tid; |
537 | ||
c12a5089 | 538 | if (cs.multi_process) |
95954743 | 539 | { |
e99b03dc | 540 | pid = ptid.pid (); |
95954743 PA |
541 | if (pid < 0) |
542 | buf += sprintf (buf, "p-%x.", -pid); | |
543 | else | |
544 | buf += sprintf (buf, "p%x.", pid); | |
545 | } | |
e38504b3 | 546 | tid = ptid.lwp (); |
95954743 PA |
547 | if (tid < 0) |
548 | buf += sprintf (buf, "-%x", -tid); | |
549 | else | |
550 | buf += sprintf (buf, "%x", tid); | |
551 | ||
552 | return buf; | |
553 | } | |
554 | ||
5b3da067 | 555 | static ULONGEST |
256642e8 | 556 | hex_or_minus_one (const char *buf, const char **obuf) |
95954743 PA |
557 | { |
558 | ULONGEST ret; | |
559 | ||
61012eef | 560 | if (startswith (buf, "-1")) |
95954743 PA |
561 | { |
562 | ret = (ULONGEST) -1; | |
563 | buf += 2; | |
564 | } | |
565 | else | |
566 | buf = unpack_varlen_hex (buf, &ret); | |
567 | ||
568 | if (obuf) | |
569 | *obuf = buf; | |
570 | ||
571 | return ret; | |
572 | } | |
573 | ||
574 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
575 | passed the last parsed char. Returns null_ptid on error. */ | |
576 | ptid_t | |
256642e8 | 577 | read_ptid (const char *buf, const char **obuf) |
95954743 | 578 | { |
256642e8 PA |
579 | const char *p = buf; |
580 | const char *pp; | |
95954743 PA |
581 | ULONGEST pid = 0, tid = 0; |
582 | ||
583 | if (*p == 'p') | |
584 | { | |
585 | /* Multi-process ptid. */ | |
586 | pp = unpack_varlen_hex (p + 1, &pid); | |
587 | if (*pp != '.') | |
588 | error ("invalid remote ptid: %s\n", p); | |
589 | ||
590 | p = pp + 1; | |
591 | ||
592 | tid = hex_or_minus_one (p, &pp); | |
593 | ||
594 | if (obuf) | |
595 | *obuf = pp; | |
fd79271b | 596 | return ptid_t (pid, tid, 0); |
95954743 PA |
597 | } |
598 | ||
599 | /* No multi-process. Just a tid. */ | |
600 | tid = hex_or_minus_one (p, &pp); | |
601 | ||
3d40fbb5 PA |
602 | /* Since GDB is not sending a process id (multi-process extensions |
603 | are off), then there's only one process. Default to the first in | |
604 | the list. */ | |
605 | pid = pid_of (get_first_process ()); | |
95954743 PA |
606 | |
607 | if (obuf) | |
608 | *obuf = pp; | |
fd79271b | 609 | return ptid_t (pid, tid, 0); |
95954743 PA |
610 | } |
611 | ||
e0f9f062 DE |
612 | /* Write COUNT bytes in BUF to the client. |
613 | The result is the number of bytes written or -1 if error. | |
614 | This may return less than COUNT. */ | |
615 | ||
616 | static int | |
617 | write_prim (const void *buf, int count) | |
618 | { | |
619 | if (remote_connection_is_stdio ()) | |
620 | return write (fileno (stdout), buf, count); | |
621 | else | |
622 | return write (remote_desc, buf, count); | |
623 | } | |
624 | ||
625 | /* Read COUNT bytes from the client and store in BUF. | |
626 | The result is the number of bytes read or -1 if error. | |
627 | This may return less than COUNT. */ | |
628 | ||
629 | static int | |
630 | read_prim (void *buf, int count) | |
631 | { | |
632 | if (remote_connection_is_stdio ()) | |
633 | return read (fileno (stdin), buf, count); | |
634 | else | |
635 | return read (remote_desc, buf, count); | |
636 | } | |
637 | ||
c906108c | 638 | /* Send a packet to the remote machine, with error checking. |
01f9e8fa DJ |
639 | The data of the packet is in BUF, and the length of the |
640 | packet is in CNT. Returns >= 0 on success, -1 otherwise. */ | |
c906108c | 641 | |
bd99dc85 PA |
642 | static int |
643 | putpkt_binary_1 (char *buf, int cnt, int is_notif) | |
c906108c | 644 | { |
c12a5089 | 645 | client_state &cs = get_client_state (); |
c906108c SS |
646 | int i; |
647 | unsigned char csum = 0; | |
0a30fbc4 | 648 | char *buf2; |
c906108c | 649 | char *p; |
bc3b5632 | 650 | int cc; |
c906108c | 651 | |
224c3ddb | 652 | buf2 = (char *) xmalloc (strlen ("$") + cnt + strlen ("#nn") + 1); |
0a30fbc4 | 653 | |
c906108c SS |
654 | /* Copy the packet into buffer BUF2, encapsulating it |
655 | and giving it a checksum. */ | |
656 | ||
657 | p = buf2; | |
bd99dc85 PA |
658 | if (is_notif) |
659 | *p++ = '%'; | |
660 | else | |
661 | *p++ = '$'; | |
c906108c | 662 | |
5ffff7c1 DJ |
663 | for (i = 0; i < cnt;) |
664 | i += try_rle (buf + i, cnt - i, &csum, &p); | |
665 | ||
c906108c SS |
666 | *p++ = '#'; |
667 | *p++ = tohex ((csum >> 4) & 0xf); | |
668 | *p++ = tohex (csum & 0xf); | |
669 | ||
670 | *p = '\0'; | |
671 | ||
672 | /* Send it over and over until we get a positive ack. */ | |
673 | ||
674 | do | |
675 | { | |
e0f9f062 | 676 | if (write_prim (buf2, p - buf2) != p - buf2) |
c906108c SS |
677 | { |
678 | perror ("putpkt(write)"); | |
f88c79e6 | 679 | free (buf2); |
c906108c SS |
680 | return -1; |
681 | } | |
682 | ||
c12a5089 | 683 | if (cs.noack_mode || is_notif) |
a6f3e723 SL |
684 | { |
685 | /* Don't expect an ack then. */ | |
686 | if (remote_debug) | |
687 | { | |
bd99dc85 | 688 | if (is_notif) |
4eefa7bc | 689 | debug_printf ("putpkt (\"%s\"); [notif]\n", buf2); |
bd99dc85 | 690 | else |
4eefa7bc PA |
691 | debug_printf ("putpkt (\"%s\"); [noack mode]\n", buf2); |
692 | debug_flush (); | |
a6f3e723 SL |
693 | } |
694 | break; | |
695 | } | |
696 | ||
c906108c | 697 | if (remote_debug) |
0d62e5e8 | 698 | { |
4eefa7bc PA |
699 | debug_printf ("putpkt (\"%s\"); [looking for ack]\n", buf2); |
700 | debug_flush (); | |
0d62e5e8 | 701 | } |
0d62e5e8 | 702 | |
bc3b5632 | 703 | cc = readchar (); |
c906108c | 704 | |
bc3b5632 DE |
705 | if (cc < 0) |
706 | { | |
0a30fbc4 | 707 | free (buf2); |
c906108c SS |
708 | return -1; |
709 | } | |
0d62e5e8 | 710 | |
bc3b5632 DE |
711 | if (remote_debug) |
712 | { | |
4eefa7bc PA |
713 | debug_printf ("[received '%c' (0x%x)]\n", cc, cc); |
714 | debug_flush (); | |
bc3b5632 DE |
715 | } |
716 | ||
0d62e5e8 | 717 | /* Check for an input interrupt while we're here. */ |
0bfdf32f | 718 | if (cc == '\003' && current_thread != NULL) |
ef57601b | 719 | (*the_target->request_interrupt) (); |
c906108c | 720 | } |
bc3b5632 | 721 | while (cc != '+'); |
c906108c | 722 | |
0a30fbc4 | 723 | free (buf2); |
c906108c SS |
724 | return 1; /* Success! */ |
725 | } | |
726 | ||
bd99dc85 PA |
727 | int |
728 | putpkt_binary (char *buf, int cnt) | |
729 | { | |
730 | return putpkt_binary_1 (buf, cnt, 0); | |
731 | } | |
732 | ||
01f9e8fa DJ |
733 | /* Send a packet to the remote machine, with error checking. The data |
734 | of the packet is in BUF, and the packet should be a NUL-terminated | |
735 | string. Returns >= 0 on success, -1 otherwise. */ | |
736 | ||
737 | int | |
738 | putpkt (char *buf) | |
739 | { | |
740 | return putpkt_binary (buf, strlen (buf)); | |
741 | } | |
742 | ||
bd99dc85 PA |
743 | int |
744 | putpkt_notif (char *buf) | |
745 | { | |
746 | return putpkt_binary_1 (buf, strlen (buf), 1); | |
747 | } | |
748 | ||
c906108c SS |
749 | /* Come here when we get an input interrupt from the remote side. This |
750 | interrupt should only be active while we are waiting for the child to do | |
bc3b5632 DE |
751 | something. Thus this assumes readchar:bufcnt is 0. |
752 | About the only thing that should come through is a ^C, which | |
ef57601b | 753 | will cause us to request child interruption. */ |
c906108c SS |
754 | |
755 | static void | |
0a30fbc4 | 756 | input_interrupt (int unused) |
c906108c | 757 | { |
cf30a8e1 C |
758 | fd_set readset; |
759 | struct timeval immediate = { 0, 0 }; | |
c906108c | 760 | |
cf30a8e1 C |
761 | /* Protect against spurious interrupts. This has been observed to |
762 | be a problem under NetBSD 1.4 and 1.5. */ | |
c906108c | 763 | |
cf30a8e1 C |
764 | FD_ZERO (&readset); |
765 | FD_SET (remote_desc, &readset); | |
766 | if (select (remote_desc + 1, &readset, 0, 0, &immediate) > 0) | |
c906108c | 767 | { |
cf30a8e1 | 768 | int cc; |
fd500816 | 769 | char c = 0; |
7390519e | 770 | |
e0f9f062 | 771 | cc = read_prim (&c, 1); |
c906108c | 772 | |
fafcc06a | 773 | if (cc == 0) |
cf30a8e1 | 774 | { |
fafcc06a SDJ |
775 | fprintf (stderr, "client connection closed\n"); |
776 | return; | |
777 | } | |
f0db101d | 778 | else if (cc != 1 || c != '\003') |
fafcc06a SDJ |
779 | { |
780 | fprintf (stderr, "input_interrupt, count = %d c = %d ", cc, c); | |
781 | if (isprint (c)) | |
782 | fprintf (stderr, "('%c')\n", c); | |
783 | else | |
784 | fprintf (stderr, "('\\x%02x')\n", c & 0xff); | |
cf30a8e1 C |
785 | return; |
786 | } | |
7390519e | 787 | |
ef57601b | 788 | (*the_target->request_interrupt) (); |
cf30a8e1 | 789 | } |
c906108c | 790 | } |
7390519e PA |
791 | |
792 | /* Check if the remote side sent us an interrupt request (^C). */ | |
793 | void | |
794 | check_remote_input_interrupt_request (void) | |
795 | { | |
796 | /* This function may be called before establishing communications, | |
797 | therefore we need to validate the remote descriptor. */ | |
798 | ||
799 | if (remote_desc == INVALID_DESCRIPTOR) | |
800 | return; | |
801 | ||
802 | input_interrupt (0); | |
803 | } | |
b80864fb | 804 | |
8b207339 YQ |
805 | /* Asynchronous I/O support. SIGIO must be unblocked when waiting, |
806 | in order to accept Control-C from the client, and must be blocked | |
807 | when talking to the client. */ | |
c906108c | 808 | |
a20d5e98 | 809 | static void |
8b207339 | 810 | block_unblock_async_io (int block) |
62ea82f5 | 811 | { |
b80864fb | 812 | #ifndef USE_WIN32API |
62ea82f5 | 813 | sigset_t sigio_set; |
a20d5e98 | 814 | |
62ea82f5 DJ |
815 | sigemptyset (&sigio_set); |
816 | sigaddset (&sigio_set, SIGIO); | |
8b207339 | 817 | sigprocmask (block ? SIG_BLOCK : SIG_UNBLOCK, &sigio_set, NULL); |
b80864fb | 818 | #endif |
62ea82f5 DJ |
819 | } |
820 | ||
ac8c974e AR |
821 | #ifdef __QNX__ |
822 | static void | |
823 | nto_comctrl (int enable) | |
824 | { | |
825 | struct sigevent event; | |
826 | ||
827 | if (enable) | |
828 | { | |
829 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
830 | event.sigev_signo = SIGIO; | |
831 | event.sigev_code = 0; | |
832 | event.sigev_value.sival_ptr = NULL; | |
833 | event.sigev_priority = -1; | |
834 | ionotify (remote_desc, _NOTIFY_ACTION_POLLARM, _NOTIFY_COND_INPUT, | |
835 | &event); | |
836 | } | |
837 | else | |
838 | ionotify (remote_desc, _NOTIFY_ACTION_POLL, _NOTIFY_COND_INPUT, NULL); | |
839 | } | |
840 | #endif /* __QNX__ */ | |
841 | ||
842 | ||
fd500816 DJ |
843 | /* Current state of asynchronous I/O. */ |
844 | static int async_io_enabled; | |
845 | ||
846 | /* Enable asynchronous I/O. */ | |
c906108c | 847 | void |
fba45db2 | 848 | enable_async_io (void) |
c906108c | 849 | { |
fd500816 DJ |
850 | if (async_io_enabled) |
851 | return; | |
852 | ||
8b207339 YQ |
853 | block_unblock_async_io (0); |
854 | ||
fd500816 | 855 | async_io_enabled = 1; |
ac8c974e AR |
856 | #ifdef __QNX__ |
857 | nto_comctrl (1); | |
858 | #endif /* __QNX__ */ | |
c906108c SS |
859 | } |
860 | ||
fd500816 | 861 | /* Disable asynchronous I/O. */ |
c906108c | 862 | void |
fba45db2 | 863 | disable_async_io (void) |
c906108c | 864 | { |
fd500816 DJ |
865 | if (!async_io_enabled) |
866 | return; | |
867 | ||
8b207339 YQ |
868 | block_unblock_async_io (1); |
869 | ||
fd500816 | 870 | async_io_enabled = 0; |
ac8c974e AR |
871 | #ifdef __QNX__ |
872 | nto_comctrl (0); | |
873 | #endif /* __QNX__ */ | |
874 | ||
c906108c SS |
875 | } |
876 | ||
a20d5e98 DJ |
877 | void |
878 | initialize_async_io (void) | |
879 | { | |
8b207339 | 880 | /* Make sure that async I/O starts blocked. */ |
a20d5e98 DJ |
881 | async_io_enabled = 1; |
882 | disable_async_io (); | |
883 | ||
8b207339 YQ |
884 | /* Install the signal handler. */ |
885 | #ifndef USE_WIN32API | |
886 | signal (SIGIO, input_interrupt); | |
887 | #endif | |
a20d5e98 DJ |
888 | } |
889 | ||
24b066ba DE |
890 | /* Internal buffer used by readchar. |
891 | These are global to readchar because reschedule_remote needs to be | |
892 | able to tell whether the buffer is empty. */ | |
893 | ||
894 | static unsigned char readchar_buf[BUFSIZ]; | |
895 | static int readchar_bufcnt = 0; | |
896 | static unsigned char *readchar_bufp; | |
897 | ||
c906108c SS |
898 | /* Returns next char from remote GDB. -1 if error. */ |
899 | ||
900 | static int | |
fba45db2 | 901 | readchar (void) |
c906108c | 902 | { |
24b066ba | 903 | int ch; |
c906108c | 904 | |
24b066ba DE |
905 | if (readchar_bufcnt == 0) |
906 | { | |
e0f9f062 | 907 | readchar_bufcnt = read_prim (readchar_buf, sizeof (readchar_buf)); |
c906108c | 908 | |
24b066ba DE |
909 | if (readchar_bufcnt <= 0) |
910 | { | |
911 | if (readchar_bufcnt == 0) | |
fddedbe6 PA |
912 | { |
913 | if (remote_debug) | |
4eefa7bc | 914 | debug_printf ("readchar: Got EOF\n"); |
fddedbe6 | 915 | } |
24b066ba DE |
916 | else |
917 | perror ("readchar"); | |
c906108c | 918 | |
24b066ba DE |
919 | return -1; |
920 | } | |
c906108c | 921 | |
24b066ba | 922 | readchar_bufp = readchar_buf; |
c906108c SS |
923 | } |
924 | ||
24b066ba DE |
925 | readchar_bufcnt--; |
926 | ch = *readchar_bufp++; | |
927 | reschedule (); | |
928 | return ch; | |
929 | } | |
930 | ||
931 | /* Reset the readchar state machine. */ | |
932 | ||
933 | static void | |
934 | reset_readchar (void) | |
935 | { | |
936 | readchar_bufcnt = 0; | |
937 | if (readchar_callback != NOT_SCHEDULED) | |
938 | { | |
939 | delete_callback_event (readchar_callback); | |
940 | readchar_callback = NOT_SCHEDULED; | |
941 | } | |
942 | } | |
943 | ||
944 | /* Process remaining data in readchar_buf. */ | |
945 | ||
946 | static int | |
947 | process_remaining (void *context) | |
948 | { | |
949 | int res; | |
950 | ||
951 | /* This is a one-shot event. */ | |
952 | readchar_callback = NOT_SCHEDULED; | |
953 | ||
954 | if (readchar_bufcnt > 0) | |
955 | res = handle_serial_event (0, NULL); | |
956 | else | |
957 | res = 0; | |
958 | ||
959 | return res; | |
960 | } | |
961 | ||
962 | /* If there is still data in the buffer, queue another event to process it, | |
963 | we can't sleep in select yet. */ | |
964 | ||
965 | static void | |
966 | reschedule (void) | |
967 | { | |
968 | if (readchar_bufcnt > 0 && readchar_callback == NOT_SCHEDULED) | |
969 | readchar_callback = append_callback_event (process_remaining, NULL); | |
c906108c SS |
970 | } |
971 | ||
972 | /* Read a packet from the remote machine, with error checking, | |
973 | and store it in BUF. Returns length of packet, or negative if error. */ | |
974 | ||
975 | int | |
fba45db2 | 976 | getpkt (char *buf) |
c906108c | 977 | { |
c12a5089 | 978 | client_state &cs = get_client_state (); |
c906108c SS |
979 | char *bp; |
980 | unsigned char csum, c1, c2; | |
981 | int c; | |
982 | ||
983 | while (1) | |
984 | { | |
985 | csum = 0; | |
986 | ||
987 | while (1) | |
988 | { | |
989 | c = readchar (); | |
5a0dd67a YQ |
990 | |
991 | /* The '\003' may appear before or after each packet, so | |
992 | check for an input interrupt. */ | |
993 | if (c == '\003') | |
994 | { | |
995 | (*the_target->request_interrupt) (); | |
996 | continue; | |
997 | } | |
998 | ||
c906108c SS |
999 | if (c == '$') |
1000 | break; | |
1001 | if (remote_debug) | |
0d62e5e8 | 1002 | { |
4eefa7bc PA |
1003 | debug_printf ("[getpkt: discarding char '%c']\n", c); |
1004 | debug_flush (); | |
0d62e5e8 DJ |
1005 | } |
1006 | ||
c906108c SS |
1007 | if (c < 0) |
1008 | return -1; | |
1009 | } | |
1010 | ||
1011 | bp = buf; | |
1012 | while (1) | |
1013 | { | |
1014 | c = readchar (); | |
1015 | if (c < 0) | |
1016 | return -1; | |
1017 | if (c == '#') | |
1018 | break; | |
1019 | *bp++ = c; | |
1020 | csum += c; | |
1021 | } | |
1022 | *bp = 0; | |
1023 | ||
1024 | c1 = fromhex (readchar ()); | |
1025 | c2 = fromhex (readchar ()); | |
c5aa993b | 1026 | |
c906108c SS |
1027 | if (csum == (c1 << 4) + c2) |
1028 | break; | |
1029 | ||
c12a5089 | 1030 | if (cs.noack_mode) |
a6f3e723 | 1031 | { |
493e2a69 MS |
1032 | fprintf (stderr, |
1033 | "Bad checksum, sentsum=0x%x, csum=0x%x, " | |
1034 | "buf=%s [no-ack-mode, Bad medium?]\n", | |
a6f3e723 SL |
1035 | (c1 << 4) + c2, csum, buf); |
1036 | /* Not much we can do, GDB wasn't expecting an ack/nac. */ | |
1037 | break; | |
1038 | } | |
1039 | ||
c906108c SS |
1040 | fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n", |
1041 | (c1 << 4) + c2, csum, buf); | |
e0f9f062 | 1042 | if (write_prim ("-", 1) != 1) |
e581f2b4 | 1043 | return -1; |
c906108c SS |
1044 | } |
1045 | ||
c12a5089 | 1046 | if (!cs.noack_mode) |
0d62e5e8 | 1047 | { |
a6f3e723 SL |
1048 | if (remote_debug) |
1049 | { | |
4eefa7bc PA |
1050 | debug_printf ("getpkt (\"%s\"); [sending ack] \n", buf); |
1051 | debug_flush (); | |
a6f3e723 | 1052 | } |
c906108c | 1053 | |
e0f9f062 | 1054 | if (write_prim ("+", 1) != 1) |
e581f2b4 | 1055 | return -1; |
c906108c | 1056 | |
a6f3e723 SL |
1057 | if (remote_debug) |
1058 | { | |
4eefa7bc PA |
1059 | debug_printf ("[sent ack]\n"); |
1060 | debug_flush (); | |
a6f3e723 | 1061 | } |
0d62e5e8 | 1062 | } |
86b1f9c5 PM |
1063 | else |
1064 | { | |
1065 | if (remote_debug) | |
1066 | { | |
4eefa7bc PA |
1067 | debug_printf ("getpkt (\"%s\"); [no ack sent] \n", buf); |
1068 | debug_flush (); | |
86b1f9c5 PM |
1069 | } |
1070 | } | |
0d62e5e8 | 1071 | |
18879fef YQ |
1072 | /* The readchar above may have already read a '\003' out of the socket |
1073 | and moved it to the local buffer. For example, when GDB sends | |
1074 | vCont;c immediately followed by interrupt (see | |
1075 | gdb.base/interrupt-noterm.exp). As soon as we see the vCont;c, we'll | |
1076 | resume the inferior and wait. Since we've already moved the '\003' | |
1077 | to the local buffer, SIGIO won't help. In that case, if we don't | |
1078 | check for interrupt after the vCont;c packet, the interrupt character | |
1079 | would stay in the buffer unattended until after the next (unrelated) | |
1080 | stop. */ | |
1081 | while (readchar_bufcnt > 0 && *readchar_bufp == '\003') | |
1082 | { | |
1083 | /* Consume the interrupt character in the buffer. */ | |
1084 | readchar (); | |
1085 | (*the_target->request_interrupt) (); | |
1086 | } | |
1087 | ||
c906108c SS |
1088 | return bp - buf; |
1089 | } | |
1090 | ||
1091 | void | |
fba45db2 | 1092 | write_ok (char *buf) |
c906108c SS |
1093 | { |
1094 | buf[0] = 'O'; | |
1095 | buf[1] = 'K'; | |
1096 | buf[2] = '\0'; | |
1097 | } | |
1098 | ||
1099 | void | |
fba45db2 | 1100 | write_enn (char *buf) |
c906108c | 1101 | { |
c89dc5d4 | 1102 | /* Some day, we should define the meanings of the error codes... */ |
c906108c | 1103 | buf[0] = 'E'; |
c89dc5d4 DJ |
1104 | buf[1] = '0'; |
1105 | buf[2] = '1'; | |
c906108c SS |
1106 | buf[3] = '\0'; |
1107 | } | |
1108 | ||
0fb4aa4b PA |
1109 | #endif |
1110 | ||
0fb4aa4b | 1111 | #ifndef IN_PROCESS_AGENT |
c906108c | 1112 | |
c906108c | 1113 | static char * |
442ea881 | 1114 | outreg (struct regcache *regcache, int regno, char *buf) |
c906108c | 1115 | { |
5c44784c JM |
1116 | if ((regno >> 12) != 0) |
1117 | *buf++ = tohex ((regno >> 12) & 0xf); | |
1118 | if ((regno >> 8) != 0) | |
1119 | *buf++ = tohex ((regno >> 8) & 0xf); | |
1120 | *buf++ = tohex ((regno >> 4) & 0xf); | |
c906108c SS |
1121 | *buf++ = tohex (regno & 0xf); |
1122 | *buf++ = ':'; | |
442ea881 | 1123 | collect_register_as_string (regcache, regno, buf); |
3aee8918 | 1124 | buf += 2 * register_size (regcache->tdesc, regno); |
c906108c SS |
1125 | *buf++ = ';'; |
1126 | ||
1127 | return buf; | |
1128 | } | |
1129 | ||
1130 | void | |
95954743 | 1131 | prepare_resume_reply (char *buf, ptid_t ptid, |
5b1c542e | 1132 | struct target_waitstatus *status) |
c906108c | 1133 | { |
c12a5089 | 1134 | client_state &cs = get_client_state (); |
5b1c542e | 1135 | if (debug_threads) |
87ce2a04 DE |
1136 | debug_printf ("Writing resume reply for %s:%d\n", |
1137 | target_pid_to_str (ptid), status->kind); | |
c906108c | 1138 | |
5b1c542e | 1139 | switch (status->kind) |
c906108c | 1140 | { |
5b1c542e | 1141 | case TARGET_WAITKIND_STOPPED: |
de0d863e | 1142 | case TARGET_WAITKIND_FORKED: |
c269dbdb | 1143 | case TARGET_WAITKIND_VFORKED: |
8228463c | 1144 | case TARGET_WAITKIND_VFORK_DONE: |
94585166 | 1145 | case TARGET_WAITKIND_EXECD: |
65706a29 | 1146 | case TARGET_WAITKIND_THREAD_CREATED: |
82075af2 JS |
1147 | case TARGET_WAITKIND_SYSCALL_ENTRY: |
1148 | case TARGET_WAITKIND_SYSCALL_RETURN: | |
5b1c542e | 1149 | { |
0bfdf32f | 1150 | struct thread_info *saved_thread; |
5b1c542e | 1151 | const char **regp; |
442ea881 | 1152 | struct regcache *regcache; |
e013ee27 | 1153 | |
c12a5089 | 1154 | if ((status->kind == TARGET_WAITKIND_FORKED && cs.report_fork_events) |
80e24d09 | 1155 | || (status->kind == TARGET_WAITKIND_VFORKED |
c12a5089 | 1156 | && cs.report_vfork_events)) |
de0d863e DB |
1157 | { |
1158 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
c269dbdb DB |
1159 | const char *event = (status->kind == TARGET_WAITKIND_FORKED |
1160 | ? "fork" : "vfork"); | |
de0d863e | 1161 | |
c269dbdb | 1162 | sprintf (buf, "T%02x%s:", signal, event); |
de0d863e DB |
1163 | buf += strlen (buf); |
1164 | buf = write_ptid (buf, status->value.related_pid); | |
1165 | strcat (buf, ";"); | |
1166 | } | |
80e24d09 | 1167 | else if (status->kind == TARGET_WAITKIND_VFORK_DONE |
c12a5089 | 1168 | && cs.report_vfork_events) |
8228463c PA |
1169 | { |
1170 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1171 | ||
1172 | sprintf (buf, "T%02xvforkdone:;", signal); | |
1173 | } | |
c12a5089 | 1174 | else if (status->kind == TARGET_WAITKIND_EXECD && cs.report_exec_events) |
94585166 DB |
1175 | { |
1176 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1177 | const char *event = "exec"; | |
1178 | char hexified_pathname[PATH_MAX * 2]; | |
1179 | ||
1180 | sprintf (buf, "T%02x%s:", signal, event); | |
1181 | buf += strlen (buf); | |
1182 | ||
1183 | /* Encode pathname to hexified format. */ | |
1184 | bin2hex ((const gdb_byte *) status->value.execd_pathname, | |
1185 | hexified_pathname, | |
1186 | strlen (status->value.execd_pathname)); | |
1187 | ||
1188 | sprintf (buf, "%s;", hexified_pathname); | |
1189 | xfree (status->value.execd_pathname); | |
1190 | status->value.execd_pathname = NULL; | |
1191 | buf += strlen (buf); | |
1192 | } | |
65706a29 | 1193 | else if (status->kind == TARGET_WAITKIND_THREAD_CREATED |
c12a5089 | 1194 | && cs.report_thread_events) |
65706a29 PA |
1195 | { |
1196 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1197 | ||
1198 | sprintf (buf, "T%02xcreate:;", signal); | |
1199 | } | |
82075af2 JS |
1200 | else if (status->kind == TARGET_WAITKIND_SYSCALL_ENTRY |
1201 | || status->kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
1202 | { | |
1203 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1204 | const char *event = (status->kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
1205 | ? "syscall_entry" : "syscall_return"); | |
1206 | ||
1207 | sprintf (buf, "T%02x%s:%x;", signal, event, | |
1208 | status->value.syscall_number); | |
1209 | } | |
de0d863e DB |
1210 | else |
1211 | sprintf (buf, "T%02x", status->value.sig); | |
1212 | ||
5b1c542e | 1213 | buf += strlen (buf); |
e013ee27 | 1214 | |
0bfdf32f | 1215 | saved_thread = current_thread; |
e013ee27 | 1216 | |
75352e28 | 1217 | switch_to_thread (ptid); |
e013ee27 | 1218 | |
3aee8918 PA |
1219 | regp = current_target_desc ()->expedite_regs; |
1220 | ||
0bfdf32f | 1221 | regcache = get_thread_regcache (current_thread, 1); |
442ea881 | 1222 | |
5b1c542e PA |
1223 | if (the_target->stopped_by_watchpoint != NULL |
1224 | && (*the_target->stopped_by_watchpoint) ()) | |
1225 | { | |
1226 | CORE_ADDR addr; | |
1227 | int i; | |
c906108c | 1228 | |
29f9a567 | 1229 | memcpy (buf, "watch:", 6); |
5b1c542e | 1230 | buf += 6; |
0d62e5e8 | 1231 | |
5b1c542e | 1232 | addr = (*the_target->stopped_data_address) (); |
255e7678 | 1233 | |
5b1c542e PA |
1234 | /* Convert each byte of the address into two hexadecimal |
1235 | chars. Note that we take sizeof (void *) instead of | |
1236 | sizeof (addr); this is to avoid sending a 64-bit | |
1237 | address to a 32-bit GDB. */ | |
1238 | for (i = sizeof (void *) * 2; i > 0; i--) | |
1239 | *buf++ = tohex ((addr >> (i - 1) * 4) & 0xf); | |
1240 | *buf++ = ';'; | |
1241 | } | |
c12a5089 | 1242 | else if (cs.swbreak_feature && target_stopped_by_sw_breakpoint ()) |
1ec68e26 PA |
1243 | { |
1244 | sprintf (buf, "swbreak:;"); | |
1245 | buf += strlen (buf); | |
1246 | } | |
c12a5089 | 1247 | else if (cs.hwbreak_feature && target_stopped_by_hw_breakpoint ()) |
1ec68e26 PA |
1248 | { |
1249 | sprintf (buf, "hwbreak:;"); | |
1250 | buf += strlen (buf); | |
1251 | } | |
5b1c542e PA |
1252 | |
1253 | while (*regp) | |
1254 | { | |
3aee8918 | 1255 | buf = outreg (regcache, find_regno (regcache->tdesc, *regp), buf); |
5b1c542e PA |
1256 | regp ++; |
1257 | } | |
5472f405 | 1258 | *buf = '\0'; |
5b1c542e PA |
1259 | |
1260 | /* Formerly, if the debugger had not used any thread features | |
1261 | we would not burden it with a thread status response. This | |
1262 | was for the benefit of GDB 4.13 and older. However, in | |
1263 | recent GDB versions the check (``if (cont_thread != 0)'') | |
1264 | does not have the desired effect because of sillyness in | |
1265 | the way that the remote protocol handles specifying a | |
1266 | thread. Since thread support relies on qSymbol support | |
1267 | anyway, assume GDB can handle threads. */ | |
1268 | ||
1269 | if (using_threads && !disable_packet_Tthread) | |
1270 | { | |
1271 | /* This if (1) ought to be unnecessary. But remote_wait | |
1272 | in GDB will claim this event belongs to inferior_ptid | |
1273 | if we do not specify a thread, and there's no way for | |
1274 | gdbserver to know what inferior_ptid is. */ | |
d7e15655 | 1275 | if (1 || cs.general_thread != ptid) |
5b1c542e | 1276 | { |
dc146f7c | 1277 | int core = -1; |
bd99dc85 PA |
1278 | /* In non-stop, don't change the general thread behind |
1279 | GDB's back. */ | |
1280 | if (!non_stop) | |
c12a5089 | 1281 | cs.general_thread = ptid; |
95954743 PA |
1282 | sprintf (buf, "thread:"); |
1283 | buf += strlen (buf); | |
1284 | buf = write_ptid (buf, ptid); | |
1285 | strcat (buf, ";"); | |
5b1c542e | 1286 | buf += strlen (buf); |
dc146f7c | 1287 | |
3e10640f YQ |
1288 | core = target_core_of_thread (ptid); |
1289 | ||
dc146f7c VP |
1290 | if (core != -1) |
1291 | { | |
1292 | sprintf (buf, "core:"); | |
1293 | buf += strlen (buf); | |
1294 | sprintf (buf, "%x", core); | |
1295 | strcat (buf, ";"); | |
1296 | buf += strlen (buf); | |
1297 | } | |
5b1c542e PA |
1298 | } |
1299 | } | |
1300 | ||
1301 | if (dlls_changed) | |
1302 | { | |
1303 | strcpy (buf, "library:;"); | |
1304 | buf += strlen (buf); | |
1305 | dlls_changed = 0; | |
1306 | } | |
1307 | ||
0bfdf32f | 1308 | current_thread = saved_thread; |
5b1c542e PA |
1309 | } |
1310 | break; | |
1311 | case TARGET_WAITKIND_EXITED: | |
c12a5089 | 1312 | if (cs.multi_process) |
95954743 | 1313 | sprintf (buf, "W%x;process:%x", |
e99b03dc | 1314 | status->value.integer, ptid.pid ()); |
95954743 PA |
1315 | else |
1316 | sprintf (buf, "W%02x", status->value.integer); | |
5b1c542e PA |
1317 | break; |
1318 | case TARGET_WAITKIND_SIGNALLED: | |
c12a5089 | 1319 | if (cs.multi_process) |
95954743 | 1320 | sprintf (buf, "X%x;process:%x", |
e99b03dc | 1321 | status->value.sig, ptid.pid ()); |
95954743 PA |
1322 | else |
1323 | sprintf (buf, "X%02x", status->value.sig); | |
5b1c542e | 1324 | break; |
65706a29 PA |
1325 | case TARGET_WAITKIND_THREAD_EXITED: |
1326 | sprintf (buf, "w%x;", status->value.integer); | |
1327 | buf += strlen (buf); | |
1328 | buf = write_ptid (buf, ptid); | |
1329 | break; | |
f2faf941 PA |
1330 | case TARGET_WAITKIND_NO_RESUMED: |
1331 | sprintf (buf, "N"); | |
1332 | break; | |
5b1c542e PA |
1333 | default: |
1334 | error ("unhandled waitkind"); | |
1335 | break; | |
c906108c | 1336 | } |
c906108c SS |
1337 | } |
1338 | ||
1339 | void | |
fba45db2 | 1340 | decode_m_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr) |
c906108c SS |
1341 | { |
1342 | int i = 0, j = 0; | |
1343 | char ch; | |
1344 | *mem_addr_ptr = *len_ptr = 0; | |
1345 | ||
1346 | while ((ch = from[i++]) != ',') | |
1347 | { | |
1348 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1349 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1350 | } | |
1351 | ||
1352 | for (j = 0; j < 4; j++) | |
1353 | { | |
1354 | if ((ch = from[i++]) == 0) | |
1355 | break; | |
1356 | *len_ptr = *len_ptr << 4; | |
1357 | *len_ptr |= fromhex (ch) & 0x0f; | |
1358 | } | |
1359 | } | |
1360 | ||
1361 | void | |
fba45db2 | 1362 | decode_M_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr, |
fa593d66 | 1363 | unsigned char **to_p) |
c906108c SS |
1364 | { |
1365 | int i = 0; | |
1366 | char ch; | |
1367 | *mem_addr_ptr = *len_ptr = 0; | |
1368 | ||
1369 | while ((ch = from[i++]) != ',') | |
1370 | { | |
1371 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1372 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1373 | } | |
1374 | ||
1375 | while ((ch = from[i++]) != ':') | |
1376 | { | |
1377 | *len_ptr = *len_ptr << 4; | |
1378 | *len_ptr |= fromhex (ch) & 0x0f; | |
1379 | } | |
1380 | ||
fa593d66 | 1381 | if (*to_p == NULL) |
224c3ddb | 1382 | *to_p = (unsigned char *) xmalloc (*len_ptr); |
fa593d66 | 1383 | |
a7191e8b | 1384 | hex2bin (&from[i++], *to_p, *len_ptr); |
c906108c | 1385 | } |
2f2893d9 | 1386 | |
01f9e8fa DJ |
1387 | int |
1388 | decode_X_packet (char *from, int packet_len, CORE_ADDR *mem_addr_ptr, | |
fa593d66 | 1389 | unsigned int *len_ptr, unsigned char **to_p) |
01f9e8fa DJ |
1390 | { |
1391 | int i = 0; | |
1392 | char ch; | |
1393 | *mem_addr_ptr = *len_ptr = 0; | |
1394 | ||
1395 | while ((ch = from[i++]) != ',') | |
1396 | { | |
1397 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1398 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1399 | } | |
1400 | ||
1401 | while ((ch = from[i++]) != ':') | |
1402 | { | |
1403 | *len_ptr = *len_ptr << 4; | |
1404 | *len_ptr |= fromhex (ch) & 0x0f; | |
1405 | } | |
1406 | ||
fa593d66 | 1407 | if (*to_p == NULL) |
224c3ddb | 1408 | *to_p = (unsigned char *) xmalloc (*len_ptr); |
fa593d66 | 1409 | |
01f9e8fa | 1410 | if (remote_unescape_input ((const gdb_byte *) &from[i], packet_len - i, |
fa593d66 | 1411 | *to_p, *len_ptr) != *len_ptr) |
01f9e8fa DJ |
1412 | return -1; |
1413 | ||
1414 | return 0; | |
1415 | } | |
1416 | ||
0e7f50da | 1417 | /* Decode a qXfer write request. */ |
d08aafef | 1418 | |
0e7f50da | 1419 | int |
d08aafef | 1420 | decode_xfer_write (char *buf, int packet_len, CORE_ADDR *offset, |
0e7f50da UW |
1421 | unsigned int *len, unsigned char *data) |
1422 | { | |
1423 | char ch; | |
d08aafef | 1424 | char *b = buf; |
0e7f50da UW |
1425 | |
1426 | /* Extract the offset. */ | |
1427 | *offset = 0; | |
1428 | while ((ch = *buf++) != ':') | |
1429 | { | |
1430 | *offset = *offset << 4; | |
1431 | *offset |= fromhex (ch) & 0x0f; | |
1432 | } | |
1433 | ||
1434 | /* Get encoded data. */ | |
d08aafef | 1435 | packet_len -= buf - b; |
0e7f50da UW |
1436 | *len = remote_unescape_input ((const gdb_byte *) buf, packet_len, |
1437 | data, packet_len); | |
1438 | return 0; | |
1439 | } | |
1440 | ||
08388c79 DE |
1441 | /* Decode the parameters of a qSearch:memory packet. */ |
1442 | ||
1443 | int | |
1444 | decode_search_memory_packet (const char *buf, int packet_len, | |
1445 | CORE_ADDR *start_addrp, | |
1446 | CORE_ADDR *search_space_lenp, | |
1447 | gdb_byte *pattern, unsigned int *pattern_lenp) | |
1448 | { | |
1449 | const char *p = buf; | |
1450 | ||
1451 | p = decode_address_to_semicolon (start_addrp, p); | |
1452 | p = decode_address_to_semicolon (search_space_lenp, p); | |
1453 | packet_len -= p - buf; | |
1454 | *pattern_lenp = remote_unescape_input ((const gdb_byte *) p, packet_len, | |
1455 | pattern, packet_len); | |
1456 | return 0; | |
1457 | } | |
1458 | ||
95954743 PA |
1459 | static void |
1460 | free_sym_cache (struct sym_cache *sym) | |
1461 | { | |
1462 | if (sym != NULL) | |
1463 | { | |
1464 | free (sym->name); | |
1465 | free (sym); | |
1466 | } | |
1467 | } | |
1468 | ||
1469 | void | |
1470 | clear_symbol_cache (struct sym_cache **symcache_p) | |
1471 | { | |
1472 | struct sym_cache *sym, *next; | |
1473 | ||
1474 | /* Check the cache first. */ | |
1475 | for (sym = *symcache_p; sym; sym = next) | |
1476 | { | |
1477 | next = sym->next; | |
1478 | free_sym_cache (sym); | |
1479 | } | |
1480 | ||
1481 | *symcache_p = NULL; | |
1482 | } | |
1483 | ||
9836d6ea PA |
1484 | /* Get the address of NAME, and return it in ADDRP if found. if |
1485 | MAY_ASK_GDB is false, assume symbol cache misses are failures. | |
fd500816 DJ |
1486 | Returns 1 if the symbol is found, 0 if it is not, -1 on error. */ |
1487 | ||
2f2893d9 | 1488 | int |
9836d6ea | 1489 | look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb) |
2f2893d9 | 1490 | { |
c12a5089 | 1491 | client_state &cs = get_client_state (); |
28170b88 | 1492 | char *p, *q; |
2f2893d9 | 1493 | int len; |
fd500816 | 1494 | struct sym_cache *sym; |
95954743 PA |
1495 | struct process_info *proc; |
1496 | ||
1497 | proc = current_process (); | |
fd500816 DJ |
1498 | |
1499 | /* Check the cache first. */ | |
95954743 | 1500 | for (sym = proc->symbol_cache; sym; sym = sym->next) |
fd500816 DJ |
1501 | if (strcmp (name, sym->name) == 0) |
1502 | { | |
1503 | *addrp = sym->addr; | |
1504 | return 1; | |
1505 | } | |
2f2893d9 | 1506 | |
9836d6ea PA |
1507 | /* It might not be an appropriate time to look up a symbol, |
1508 | e.g. while we're trying to fetch registers. */ | |
1509 | if (!may_ask_gdb) | |
ea025f5f DJ |
1510 | return 0; |
1511 | ||
2f2893d9 | 1512 | /* Send the request. */ |
c12a5089 SC |
1513 | strcpy (cs.own_buf, "qSymbol:"); |
1514 | bin2hex ((const gdb_byte *) name, cs.own_buf + strlen ("qSymbol:"), | |
971dc0b8 | 1515 | strlen (name)); |
c12a5089 | 1516 | if (putpkt (cs.own_buf) < 0) |
2f2893d9 DJ |
1517 | return -1; |
1518 | ||
1519 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
c12a5089 | 1520 | len = getpkt (cs.own_buf); |
2f2893d9 DJ |
1521 | if (len < 0) |
1522 | return -1; | |
1523 | ||
2bbe3cc1 DJ |
1524 | /* We ought to handle pretty much any packet at this point while we |
1525 | wait for the qSymbol "response". That requires re-entering the | |
1526 | main loop. For now, this is an adequate approximation; allow | |
28170b88 MK |
1527 | GDB to read from memory and handle 'v' packets (for vFile transfers) |
1528 | while it figures out the address of the symbol. */ | |
1529 | while (1) | |
2bbe3cc1 | 1530 | { |
c12a5089 | 1531 | if (cs.own_buf[0] == 'm') |
28170b88 MK |
1532 | { |
1533 | CORE_ADDR mem_addr; | |
1534 | unsigned char *mem_buf; | |
1535 | unsigned int mem_len; | |
1536 | ||
c12a5089 | 1537 | decode_m_packet (&cs.own_buf[1], &mem_addr, &mem_len); |
28170b88 MK |
1538 | mem_buf = (unsigned char *) xmalloc (mem_len); |
1539 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) | |
c12a5089 | 1540 | bin2hex (mem_buf, cs.own_buf, mem_len); |
28170b88 | 1541 | else |
c12a5089 | 1542 | write_enn (cs.own_buf); |
28170b88 | 1543 | free (mem_buf); |
c12a5089 | 1544 | if (putpkt (cs.own_buf) < 0) |
28170b88 MK |
1545 | return -1; |
1546 | } | |
c12a5089 | 1547 | else if (cs.own_buf[0] == 'v') |
28170b88 MK |
1548 | { |
1549 | int new_len = -1; | |
c12a5089 | 1550 | handle_v_requests (cs.own_buf, len, &new_len); |
28170b88 | 1551 | if (new_len != -1) |
c12a5089 | 1552 | putpkt_binary (cs.own_buf, new_len); |
28170b88 | 1553 | else |
c12a5089 | 1554 | putpkt (cs.own_buf); |
28170b88 | 1555 | } |
2bbe3cc1 | 1556 | else |
28170b88 | 1557 | break; |
c12a5089 | 1558 | len = getpkt (cs.own_buf); |
2bbe3cc1 DJ |
1559 | if (len < 0) |
1560 | return -1; | |
1561 | } | |
1b3f6016 | 1562 | |
c12a5089 | 1563 | if (!startswith (cs.own_buf, "qSymbol:")) |
2f2893d9 | 1564 | { |
c12a5089 | 1565 | warning ("Malformed response to qSymbol, ignoring: %s\n", cs.own_buf); |
2f2893d9 DJ |
1566 | return -1; |
1567 | } | |
1568 | ||
c12a5089 | 1569 | p = cs.own_buf + strlen ("qSymbol:"); |
2f2893d9 DJ |
1570 | q = p; |
1571 | while (*q && *q != ':') | |
1572 | q++; | |
1573 | ||
1574 | /* Make sure we found a value for the symbol. */ | |
1575 | if (p == q || *q == '\0') | |
1576 | return 0; | |
1577 | ||
1578 | decode_address (addrp, p, q - p); | |
fd500816 DJ |
1579 | |
1580 | /* Save the symbol in our cache. */ | |
8d749320 | 1581 | sym = XNEW (struct sym_cache); |
bca929d3 | 1582 | sym->name = xstrdup (name); |
fd500816 | 1583 | sym->addr = *addrp; |
95954743 PA |
1584 | sym->next = proc->symbol_cache; |
1585 | proc->symbol_cache = sym; | |
fd500816 | 1586 | |
2f2893d9 DJ |
1587 | return 1; |
1588 | } | |
c74d0ad8 | 1589 | |
fa593d66 PA |
1590 | /* Relocate an instruction to execute at a different address. OLDLOC |
1591 | is the address in the inferior memory where the instruction to | |
1592 | relocate is currently at. On input, TO points to the destination | |
1593 | where we want the instruction to be copied (and possibly adjusted) | |
1594 | to. On output, it points to one past the end of the resulting | |
1595 | instruction(s). The effect of executing the instruction at TO | |
86a30030 | 1596 | shall be the same as if executing it at OLDLOC. For example, call |
fa593d66 PA |
1597 | instructions that implicitly push the return address on the stack |
1598 | should be adjusted to return to the instruction after OLDLOC; | |
1599 | relative branches, and other PC-relative instructions need the | |
1600 | offset adjusted; etc. Returns 0 on success, -1 on failure. */ | |
1601 | ||
1602 | int | |
1603 | relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc) | |
1604 | { | |
c12a5089 | 1605 | client_state &cs = get_client_state (); |
fa593d66 PA |
1606 | int len; |
1607 | ULONGEST written = 0; | |
1608 | ||
1609 | /* Send the request. */ | |
c12a5089 | 1610 | sprintf (cs.own_buf, "qRelocInsn:%s;%s", paddress (oldloc), |
fa593d66 | 1611 | paddress (*to)); |
c12a5089 | 1612 | if (putpkt (cs.own_buf) < 0) |
fa593d66 PA |
1613 | return -1; |
1614 | ||
1615 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
c12a5089 | 1616 | len = getpkt (cs.own_buf); |
fa593d66 PA |
1617 | if (len < 0) |
1618 | return -1; | |
1619 | ||
1620 | /* We ought to handle pretty much any packet at this point while we | |
1621 | wait for the qRelocInsn "response". That requires re-entering | |
1622 | the main loop. For now, this is an adequate approximation; allow | |
1623 | GDB to access memory. */ | |
c12a5089 | 1624 | while (cs.own_buf[0] == 'm' || cs.own_buf[0] == 'M' || cs.own_buf[0] == 'X') |
fa593d66 PA |
1625 | { |
1626 | CORE_ADDR mem_addr; | |
1627 | unsigned char *mem_buf = NULL; | |
1628 | unsigned int mem_len; | |
1629 | ||
c12a5089 | 1630 | if (cs.own_buf[0] == 'm') |
fa593d66 | 1631 | { |
c12a5089 | 1632 | decode_m_packet (&cs.own_buf[1], &mem_addr, &mem_len); |
224c3ddb | 1633 | mem_buf = (unsigned char *) xmalloc (mem_len); |
fa593d66 | 1634 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) |
c12a5089 | 1635 | bin2hex (mem_buf, cs.own_buf, mem_len); |
fa593d66 | 1636 | else |
c12a5089 | 1637 | write_enn (cs.own_buf); |
fa593d66 | 1638 | } |
c12a5089 | 1639 | else if (cs.own_buf[0] == 'X') |
fa593d66 | 1640 | { |
c12a5089 | 1641 | if (decode_X_packet (&cs.own_buf[1], len - 1, &mem_addr, |
fa593d66 PA |
1642 | &mem_len, &mem_buf) < 0 |
1643 | || write_inferior_memory (mem_addr, mem_buf, mem_len) != 0) | |
c12a5089 | 1644 | write_enn (cs.own_buf); |
fa593d66 | 1645 | else |
c12a5089 | 1646 | write_ok (cs.own_buf); |
fa593d66 PA |
1647 | } |
1648 | else | |
1649 | { | |
c12a5089 | 1650 | decode_M_packet (&cs.own_buf[1], &mem_addr, &mem_len, &mem_buf); |
fa593d66 | 1651 | if (write_inferior_memory (mem_addr, mem_buf, mem_len) == 0) |
c12a5089 | 1652 | write_ok (cs.own_buf); |
fa593d66 | 1653 | else |
c12a5089 | 1654 | write_enn (cs.own_buf); |
fa593d66 PA |
1655 | } |
1656 | free (mem_buf); | |
c12a5089 | 1657 | if (putpkt (cs.own_buf) < 0) |
fa593d66 | 1658 | return -1; |
c12a5089 | 1659 | len = getpkt (cs.own_buf); |
fa593d66 PA |
1660 | if (len < 0) |
1661 | return -1; | |
1662 | } | |
1663 | ||
c12a5089 | 1664 | if (cs.own_buf[0] == 'E') |
fa593d66 PA |
1665 | { |
1666 | warning ("An error occurred while relocating an instruction: %s\n", | |
c12a5089 | 1667 | cs.own_buf); |
fa593d66 PA |
1668 | return -1; |
1669 | } | |
1670 | ||
c12a5089 | 1671 | if (!startswith (cs.own_buf, "qRelocInsn:")) |
fa593d66 PA |
1672 | { |
1673 | warning ("Malformed response to qRelocInsn, ignoring: %s\n", | |
c12a5089 | 1674 | cs.own_buf); |
fa593d66 PA |
1675 | return -1; |
1676 | } | |
1677 | ||
c12a5089 | 1678 | unpack_varlen_hex (cs.own_buf + strlen ("qRelocInsn:"), &written); |
fa593d66 PA |
1679 | |
1680 | *to += written; | |
1681 | return 0; | |
1682 | } | |
1683 | ||
c74d0ad8 | 1684 | void |
bce7165d | 1685 | monitor_output (const char *msg) |
c74d0ad8 | 1686 | { |
0a822afb | 1687 | int len = strlen (msg); |
224c3ddb | 1688 | char *buf = (char *) xmalloc (len * 2 + 2); |
c74d0ad8 DJ |
1689 | |
1690 | buf[0] = 'O'; | |
971dc0b8 | 1691 | bin2hex ((const gdb_byte *) msg, buf + 1, len); |
c74d0ad8 DJ |
1692 | |
1693 | putpkt (buf); | |
1694 | free (buf); | |
1695 | } | |
255e7678 | 1696 | |
0fb4aa4b | 1697 | #endif |