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 | ||
c906108c | 111 | int remote_debug = 0; |
03863182 | 112 | struct ui_file *gdb_stdlog; |
c906108c | 113 | |
e0f9f062 DE |
114 | static int remote_is_stdio = 0; |
115 | ||
ec48365d PA |
116 | static gdb_fildes_t remote_desc = INVALID_DESCRIPTOR; |
117 | static gdb_fildes_t listen_desc = INVALID_DESCRIPTOR; | |
c906108c | 118 | |
0d62e5e8 DJ |
119 | /* FIXME headerize? */ |
120 | extern int using_threads; | |
121 | extern int debug_threads; | |
122 | ||
0f48aa01 | 123 | #ifdef USE_WIN32API |
68070c10 PA |
124 | # define read(fd, buf, len) recv (fd, (char *) buf, len, 0) |
125 | # define write(fd, buf, len) send (fd, (char *) buf, len, 0) | |
0f48aa01 DJ |
126 | #endif |
127 | ||
8336d594 PA |
128 | int |
129 | gdb_connected (void) | |
130 | { | |
131 | return remote_desc != INVALID_DESCRIPTOR; | |
132 | } | |
133 | ||
e0f9f062 DE |
134 | /* Return true if the remote connection is over stdio. */ |
135 | ||
136 | int | |
137 | remote_connection_is_stdio (void) | |
138 | { | |
139 | return remote_is_stdio; | |
140 | } | |
141 | ||
8336d594 PA |
142 | static void |
143 | enable_async_notification (int fd) | |
144 | { | |
145 | #if defined(F_SETFL) && defined (FASYNC) | |
146 | int save_fcntl_flags; | |
147 | ||
148 | save_fcntl_flags = fcntl (fd, F_GETFL, 0); | |
149 | fcntl (fd, F_SETFL, save_fcntl_flags | FASYNC); | |
150 | #if defined (F_SETOWN) | |
151 | fcntl (fd, F_SETOWN, getpid ()); | |
152 | #endif | |
153 | #endif | |
154 | } | |
155 | ||
156 | static int | |
157 | handle_accept_event (int err, gdb_client_data client_data) | |
158 | { | |
c7ab0aef SDJ |
159 | struct sockaddr_storage sockaddr; |
160 | socklen_t len = sizeof (sockaddr); | |
8336d594 PA |
161 | |
162 | if (debug_threads) | |
87ce2a04 | 163 | debug_printf ("handling possible accept event\n"); |
8336d594 | 164 | |
c7ab0aef | 165 | remote_desc = accept (listen_desc, (struct sockaddr *) &sockaddr, &len); |
8336d594 PA |
166 | if (remote_desc == -1) |
167 | perror_with_name ("Accept failed"); | |
168 | ||
169 | /* Enable TCP keep alive process. */ | |
c7ab0aef | 170 | socklen_t tmp = 1; |
8336d594 PA |
171 | setsockopt (remote_desc, SOL_SOCKET, SO_KEEPALIVE, |
172 | (char *) &tmp, sizeof (tmp)); | |
173 | ||
174 | /* Tell TCP not to delay small packets. This greatly speeds up | |
175 | interactive response. */ | |
176 | tmp = 1; | |
177 | setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY, | |
178 | (char *) &tmp, sizeof (tmp)); | |
179 | ||
180 | #ifndef USE_WIN32API | |
8336d594 PA |
181 | signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply |
182 | exits when the remote side dies. */ | |
03f2bd59 JK |
183 | #endif |
184 | ||
185 | if (run_once) | |
186 | { | |
187 | #ifndef USE_WIN32API | |
188 | close (listen_desc); /* No longer need this */ | |
8336d594 | 189 | #else |
03f2bd59 | 190 | closesocket (listen_desc); /* No longer need this */ |
8336d594 | 191 | #endif |
03f2bd59 | 192 | } |
8336d594 | 193 | |
03f2bd59 JK |
194 | /* Even if !RUN_ONCE no longer notice new connections. Still keep the |
195 | descriptor open for add_file_handler to wait for a new connection. */ | |
8336d594 PA |
196 | delete_file_handler (listen_desc); |
197 | ||
80e24d09 SM |
198 | /* Convert IP address to string. */ |
199 | char orig_host[GDB_NI_MAX_ADDR], orig_port[GDB_NI_MAX_PORT]; | |
c7ab0aef | 200 | |
80e24d09 SM |
201 | int r = getnameinfo ((struct sockaddr *) &sockaddr, len, |
202 | orig_host, sizeof (orig_host), | |
203 | orig_port, sizeof (orig_port), | |
204 | NI_NUMERICHOST | NI_NUMERICSERV); | |
c7ab0aef | 205 | |
80e24d09 SM |
206 | if (r != 0) |
207 | fprintf (stderr, _("Could not obtain remote address: %s\n"), | |
208 | gai_strerror (r)); | |
c7ab0aef | 209 | else |
80e24d09 SM |
210 | fprintf (stderr, _("Remote debugging from host %s, port %s\n"), |
211 | orig_host, orig_port); | |
8336d594 PA |
212 | |
213 | enable_async_notification (remote_desc); | |
214 | ||
215 | /* Register the event loop handler. */ | |
216 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
217 | ||
218 | /* We have a new GDB connection now. If we were disconnected | |
219 | tracing, there's a window where the target could report a stop | |
220 | event to the event loop, and since we have a connection now, we'd | |
221 | try to send vStopped notifications to GDB. But, don't do that | |
222 | until GDB as selected all-stop/non-stop, and has queried the | |
223 | threads' status ('?'). */ | |
224 | target_async (0); | |
225 | ||
226 | return 0; | |
227 | } | |
228 | ||
03f2bd59 JK |
229 | /* Prepare for a later connection to a remote debugger. |
230 | NAME is the filename used for communication. */ | |
231 | ||
232 | void | |
fb32b4f7 | 233 | remote_prepare (const char *name) |
03f2bd59 | 234 | { |
c12a5089 | 235 | client_state &cs = get_client_state (); |
03f2bd59 JK |
236 | #ifdef USE_WIN32API |
237 | static int winsock_initialized; | |
238 | #endif | |
03f2bd59 | 239 | socklen_t tmp; |
03f2bd59 | 240 | |
e0f9f062 DE |
241 | remote_is_stdio = 0; |
242 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
243 | { | |
244 | /* We need to record fact that we're using stdio sooner than the | |
245 | call to remote_open so start_inferior knows the connection is | |
246 | via stdio. */ | |
247 | remote_is_stdio = 1; | |
c12a5089 | 248 | cs.transport_is_reliable = 1; |
e0f9f062 DE |
249 | return; |
250 | } | |
251 | ||
c7ab0aef SDJ |
252 | struct addrinfo hint; |
253 | struct addrinfo *ainfo; | |
254 | ||
255 | memset (&hint, 0, sizeof (hint)); | |
256 | /* Assume no prefix will be passed, therefore we should use | |
257 | AF_UNSPEC. */ | |
258 | hint.ai_family = AF_UNSPEC; | |
259 | hint.ai_socktype = SOCK_STREAM; | |
260 | hint.ai_protocol = IPPROTO_TCP; | |
261 | ||
262 | parsed_connection_spec parsed | |
80e24d09 | 263 | = parse_connection_spec_without_prefix (name, &hint); |
c7ab0aef SDJ |
264 | |
265 | if (parsed.port_str.empty ()) | |
03f2bd59 | 266 | { |
c12a5089 | 267 | cs.transport_is_reliable = 0; |
03f2bd59 JK |
268 | return; |
269 | } | |
270 | ||
03f2bd59 JK |
271 | #ifdef USE_WIN32API |
272 | if (!winsock_initialized) | |
273 | { | |
274 | WSADATA wsad; | |
275 | ||
276 | WSAStartup (MAKEWORD (1, 0), &wsad); | |
277 | winsock_initialized = 1; | |
278 | } | |
279 | #endif | |
280 | ||
80e24d09 SM |
281 | int r = getaddrinfo (parsed.host_str.c_str (), parsed.port_str.c_str (), |
282 | &hint, &ainfo); | |
c7ab0aef | 283 | |
80e24d09 SM |
284 | if (r != 0) |
285 | error (_("%s: cannot resolve name: %s"), name, gai_strerror (r)); | |
c7ab0aef | 286 | |
80e24d09 | 287 | scoped_free_addrinfo freeaddrinfo (ainfo); |
c7ab0aef | 288 | |
80e24d09 | 289 | struct addrinfo *iter; |
c7ab0aef | 290 | |
80e24d09 | 291 | for (iter = ainfo; iter != NULL; iter = iter->ai_next) |
f19c7ff8 | 292 | { |
80e24d09 SM |
293 | listen_desc = gdb_socket_cloexec (iter->ai_family, iter->ai_socktype, |
294 | iter->ai_protocol); | |
f19c7ff8 | 295 | |
80e24d09 SM |
296 | if (listen_desc >= 0) |
297 | break; | |
298 | } | |
f19c7ff8 | 299 | |
80e24d09 SM |
300 | if (iter == NULL) |
301 | perror_with_name ("Can't open socket"); | |
f19c7ff8 | 302 | |
80e24d09 SM |
303 | /* Allow rapid reuse of this port. */ |
304 | tmp = 1; | |
305 | setsockopt (listen_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, | |
306 | sizeof (tmp)); | |
f19c7ff8 | 307 | |
80e24d09 SM |
308 | switch (iter->ai_family) |
309 | { | |
310 | case AF_INET: | |
311 | ((struct sockaddr_in *) iter->ai_addr)->sin_addr.s_addr = INADDR_ANY; | |
312 | break; | |
313 | case AF_INET6: | |
314 | ((struct sockaddr_in6 *) iter->ai_addr)->sin6_addr = in6addr_any; | |
315 | break; | |
316 | default: | |
317 | internal_error (__FILE__, __LINE__, | |
318 | _("Invalid 'ai_family' %d\n"), iter->ai_family); | |
c7ab0aef | 319 | } |
03f2bd59 | 320 | |
80e24d09 | 321 | if (bind (listen_desc, iter->ai_addr, iter->ai_addrlen) != 0) |
03f2bd59 JK |
322 | perror_with_name ("Can't bind address"); |
323 | ||
c7ab0aef SDJ |
324 | if (listen (listen_desc, 1) != 0) |
325 | perror_with_name ("Can't listen on socket"); | |
326 | ||
c12a5089 | 327 | cs.transport_is_reliable = 1; |
03f2bd59 JK |
328 | } |
329 | ||
c906108c SS |
330 | /* Open a connection to a remote debugger. |
331 | NAME is the filename used for communication. */ | |
332 | ||
333 | void | |
fb32b4f7 | 334 | remote_open (const char *name) |
c906108c | 335 | { |
fb32b4f7 | 336 | const char *port_str; |
8264bb58 DJ |
337 | |
338 | port_str = strchr (name, ':'); | |
e0f9f062 | 339 | #ifdef USE_WIN32API |
8264bb58 | 340 | if (port_str == NULL) |
752312ba | 341 | error ("Only HOST:PORT is supported on this platform."); |
e0f9f062 DE |
342 | #endif |
343 | ||
344 | if (strcmp (name, STDIO_CONNECTION_NAME) == 0) | |
345 | { | |
346 | fprintf (stderr, "Remote debugging using stdio\n"); | |
347 | ||
348 | /* Use stdin as the handle of the connection. | |
349 | We only select on reads, for example. */ | |
350 | remote_desc = fileno (stdin); | |
351 | ||
352 | enable_async_notification (remote_desc); | |
353 | ||
354 | /* Register the event loop handler. */ | |
355 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
356 | } | |
357 | #ifndef USE_WIN32API | |
358 | else if (port_str == NULL) | |
80e24d09 | 359 | { |
8264bb58 DJ |
360 | struct stat statbuf; |
361 | ||
362 | if (stat (name, &statbuf) == 0 | |
80e24d09 | 363 | && (S_ISCHR (statbuf.st_mode) || S_ISFIFO (statbuf.st_mode))) |
8264bb58 DJ |
364 | remote_desc = open (name, O_RDWR); |
365 | else | |
366 | { | |
367 | errno = EINVAL; | |
368 | remote_desc = -1; | |
369 | } | |
370 | ||
c906108c SS |
371 | if (remote_desc < 0) |
372 | perror_with_name ("Could not open remote device"); | |
373 | ||
726e1356 | 374 | #if HAVE_TERMIOS_H |
c906108c SS |
375 | { |
376 | struct termios termios; | |
c5aa993b | 377 | tcgetattr (remote_desc, &termios); |
c906108c SS |
378 | |
379 | termios.c_iflag = 0; | |
380 | termios.c_oflag = 0; | |
381 | termios.c_lflag = 0; | |
c5aa993b | 382 | termios.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 383 | termios.c_cflag |= CLOCAL | CS8; |
d0608e50 | 384 | termios.c_cc[VMIN] = 1; |
c906108c SS |
385 | termios.c_cc[VTIME] = 0; |
386 | ||
c5aa993b | 387 | tcsetattr (remote_desc, TCSANOW, &termios); |
c906108c SS |
388 | } |
389 | #endif | |
390 | ||
e641a1ca | 391 | fprintf (stderr, "Remote debugging using %s\n", name); |
a6f3e723 | 392 | |
8336d594 PA |
393 | enable_async_notification (remote_desc); |
394 | ||
395 | /* Register the event loop handler. */ | |
396 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
c906108c | 397 | } |
e0f9f062 | 398 | #endif /* USE_WIN32API */ |
c906108c SS |
399 | else |
400 | { | |
c7ab0aef SDJ |
401 | char listen_port[GDB_NI_MAX_PORT]; |
402 | struct sockaddr_storage sockaddr; | |
403 | socklen_t len = sizeof (sockaddr); | |
404 | ||
405 | if (getsockname (listen_desc, (struct sockaddr *) &sockaddr, &len) < 0) | |
03f2bd59 | 406 | perror_with_name ("Can't determine port"); |
6f8486da | 407 | |
c7ab0aef SDJ |
408 | int r = getnameinfo ((struct sockaddr *) &sockaddr, len, |
409 | NULL, 0, | |
410 | listen_port, sizeof (listen_port), | |
411 | NI_NUMERICSERV); | |
412 | ||
413 | if (r != 0) | |
414 | fprintf (stderr, _("Can't obtain port where we are listening: %s"), | |
415 | gai_strerror (r)); | |
416 | else | |
417 | fprintf (stderr, _("Listening on port %s\n"), listen_port); | |
418 | ||
b80864fb | 419 | fflush (stderr); |
6910d122 | 420 | |
8336d594 PA |
421 | /* Register the event loop handler. */ |
422 | add_file_handler (listen_desc, handle_accept_event, NULL); | |
c906108c | 423 | } |
c906108c SS |
424 | } |
425 | ||
426 | void | |
fba45db2 | 427 | remote_close (void) |
c906108c | 428 | { |
bd99dc85 PA |
429 | delete_file_handler (remote_desc); |
430 | ||
e849ea89 | 431 | disable_async_io (); |
8b207339 | 432 | |
b80864fb DJ |
433 | #ifdef USE_WIN32API |
434 | closesocket (remote_desc); | |
435 | #else | |
e0f9f062 DE |
436 | if (! remote_connection_is_stdio ()) |
437 | close (remote_desc); | |
b80864fb | 438 | #endif |
8336d594 | 439 | remote_desc = INVALID_DESCRIPTOR; |
24b066ba DE |
440 | |
441 | reset_readchar (); | |
c906108c SS |
442 | } |
443 | ||
0fb4aa4b PA |
444 | #endif |
445 | ||
0fb4aa4b PA |
446 | #ifndef IN_PROCESS_AGENT |
447 | ||
dae5f5cf | 448 | void |
2f2893d9 DJ |
449 | decode_address (CORE_ADDR *addrp, const char *start, int len) |
450 | { | |
451 | CORE_ADDR addr; | |
452 | char ch; | |
453 | int i; | |
454 | ||
455 | addr = 0; | |
456 | for (i = 0; i < len; i++) | |
457 | { | |
458 | ch = start[i]; | |
459 | addr = addr << 4; | |
460 | addr = addr | (fromhex (ch) & 0x0f); | |
461 | } | |
462 | *addrp = addr; | |
463 | } | |
464 | ||
89be2091 DJ |
465 | const char * |
466 | decode_address_to_semicolon (CORE_ADDR *addrp, const char *start) | |
467 | { | |
468 | const char *end; | |
469 | ||
470 | end = start; | |
471 | while (*end != '\0' && *end != ';') | |
472 | end++; | |
473 | ||
474 | decode_address (addrp, start, end - start); | |
475 | ||
476 | if (*end == ';') | |
477 | end++; | |
478 | return end; | |
479 | } | |
480 | ||
0fb4aa4b PA |
481 | #endif |
482 | ||
0fb4aa4b PA |
483 | #ifndef IN_PROCESS_AGENT |
484 | ||
5ffff7c1 DJ |
485 | /* Look for a sequence of characters which can be run-length encoded. |
486 | If there are any, update *CSUM and *P. Otherwise, output the | |
487 | single character. Return the number of characters consumed. */ | |
488 | ||
489 | static int | |
490 | try_rle (char *buf, int remaining, unsigned char *csum, char **p) | |
491 | { | |
492 | int n; | |
493 | ||
494 | /* Always output the character. */ | |
495 | *csum += buf[0]; | |
496 | *(*p)++ = buf[0]; | |
497 | ||
498 | /* Don't go past '~'. */ | |
499 | if (remaining > 97) | |
500 | remaining = 97; | |
501 | ||
502 | for (n = 1; n < remaining; n++) | |
503 | if (buf[n] != buf[0]) | |
504 | break; | |
505 | ||
506 | /* N is the index of the first character not the same as buf[0]. | |
507 | buf[0] is counted twice, so by decrementing N, we get the number | |
508 | of characters the RLE sequence will replace. */ | |
509 | n--; | |
510 | ||
511 | if (n < 3) | |
512 | return 1; | |
513 | ||
514 | /* Skip the frame characters. The manual says to skip '+' and '-' | |
515 | also, but there's no reason to. Unfortunately these two unusable | |
516 | characters double the encoded length of a four byte zero | |
517 | value. */ | |
518 | while (n + 29 == '$' || n + 29 == '#') | |
519 | n--; | |
520 | ||
521 | *csum += '*'; | |
522 | *(*p)++ = '*'; | |
523 | *csum += n + 29; | |
524 | *(*p)++ = n + 29; | |
525 | ||
526 | return n + 1; | |
527 | } | |
528 | ||
0fb4aa4b PA |
529 | #endif |
530 | ||
0fb4aa4b PA |
531 | #ifndef IN_PROCESS_AGENT |
532 | ||
95954743 PA |
533 | /* Write a PTID to BUF. Returns BUF+CHARACTERS_WRITTEN. */ |
534 | ||
535 | char * | |
536 | write_ptid (char *buf, ptid_t ptid) | |
537 | { | |
c12a5089 | 538 | client_state &cs = get_client_state (); |
95954743 PA |
539 | int pid, tid; |
540 | ||
c12a5089 | 541 | if (cs.multi_process) |
95954743 | 542 | { |
e99b03dc | 543 | pid = ptid.pid (); |
95954743 PA |
544 | if (pid < 0) |
545 | buf += sprintf (buf, "p-%x.", -pid); | |
546 | else | |
547 | buf += sprintf (buf, "p%x.", pid); | |
548 | } | |
e38504b3 | 549 | tid = ptid.lwp (); |
95954743 PA |
550 | if (tid < 0) |
551 | buf += sprintf (buf, "-%x", -tid); | |
552 | else | |
553 | buf += sprintf (buf, "%x", tid); | |
554 | ||
555 | return buf; | |
556 | } | |
557 | ||
5b3da067 | 558 | static ULONGEST |
256642e8 | 559 | hex_or_minus_one (const char *buf, const char **obuf) |
95954743 PA |
560 | { |
561 | ULONGEST ret; | |
562 | ||
61012eef | 563 | if (startswith (buf, "-1")) |
95954743 PA |
564 | { |
565 | ret = (ULONGEST) -1; | |
566 | buf += 2; | |
567 | } | |
568 | else | |
569 | buf = unpack_varlen_hex (buf, &ret); | |
570 | ||
571 | if (obuf) | |
572 | *obuf = buf; | |
573 | ||
574 | return ret; | |
575 | } | |
576 | ||
577 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
578 | passed the last parsed char. Returns null_ptid on error. */ | |
579 | ptid_t | |
256642e8 | 580 | read_ptid (const char *buf, const char **obuf) |
95954743 | 581 | { |
256642e8 PA |
582 | const char *p = buf; |
583 | const char *pp; | |
95954743 PA |
584 | ULONGEST pid = 0, tid = 0; |
585 | ||
586 | if (*p == 'p') | |
587 | { | |
588 | /* Multi-process ptid. */ | |
589 | pp = unpack_varlen_hex (p + 1, &pid); | |
590 | if (*pp != '.') | |
591 | error ("invalid remote ptid: %s\n", p); | |
592 | ||
593 | p = pp + 1; | |
594 | ||
595 | tid = hex_or_minus_one (p, &pp); | |
596 | ||
597 | if (obuf) | |
598 | *obuf = pp; | |
fd79271b | 599 | return ptid_t (pid, tid, 0); |
95954743 PA |
600 | } |
601 | ||
602 | /* No multi-process. Just a tid. */ | |
603 | tid = hex_or_minus_one (p, &pp); | |
604 | ||
3d40fbb5 PA |
605 | /* Since GDB is not sending a process id (multi-process extensions |
606 | are off), then there's only one process. Default to the first in | |
607 | the list. */ | |
608 | pid = pid_of (get_first_process ()); | |
95954743 PA |
609 | |
610 | if (obuf) | |
611 | *obuf = pp; | |
fd79271b | 612 | return ptid_t (pid, tid, 0); |
95954743 PA |
613 | } |
614 | ||
e0f9f062 DE |
615 | /* Write COUNT bytes in BUF to the client. |
616 | The result is the number of bytes written or -1 if error. | |
617 | This may return less than COUNT. */ | |
618 | ||
619 | static int | |
620 | write_prim (const void *buf, int count) | |
621 | { | |
622 | if (remote_connection_is_stdio ()) | |
623 | return write (fileno (stdout), buf, count); | |
624 | else | |
625 | return write (remote_desc, buf, count); | |
626 | } | |
627 | ||
628 | /* Read COUNT bytes from the client and store in BUF. | |
629 | The result is the number of bytes read or -1 if error. | |
630 | This may return less than COUNT. */ | |
631 | ||
632 | static int | |
633 | read_prim (void *buf, int count) | |
634 | { | |
635 | if (remote_connection_is_stdio ()) | |
636 | return read (fileno (stdin), buf, count); | |
637 | else | |
638 | return read (remote_desc, buf, count); | |
639 | } | |
640 | ||
c906108c | 641 | /* Send a packet to the remote machine, with error checking. |
01f9e8fa DJ |
642 | The data of the packet is in BUF, and the length of the |
643 | packet is in CNT. Returns >= 0 on success, -1 otherwise. */ | |
c906108c | 644 | |
bd99dc85 PA |
645 | static int |
646 | putpkt_binary_1 (char *buf, int cnt, int is_notif) | |
c906108c | 647 | { |
c12a5089 | 648 | client_state &cs = get_client_state (); |
c906108c SS |
649 | int i; |
650 | unsigned char csum = 0; | |
0a30fbc4 | 651 | char *buf2; |
c906108c | 652 | char *p; |
bc3b5632 | 653 | int cc; |
c906108c | 654 | |
224c3ddb | 655 | buf2 = (char *) xmalloc (strlen ("$") + cnt + strlen ("#nn") + 1); |
0a30fbc4 | 656 | |
c906108c SS |
657 | /* Copy the packet into buffer BUF2, encapsulating it |
658 | and giving it a checksum. */ | |
659 | ||
660 | p = buf2; | |
bd99dc85 PA |
661 | if (is_notif) |
662 | *p++ = '%'; | |
663 | else | |
664 | *p++ = '$'; | |
c906108c | 665 | |
5ffff7c1 DJ |
666 | for (i = 0; i < cnt;) |
667 | i += try_rle (buf + i, cnt - i, &csum, &p); | |
668 | ||
c906108c SS |
669 | *p++ = '#'; |
670 | *p++ = tohex ((csum >> 4) & 0xf); | |
671 | *p++ = tohex (csum & 0xf); | |
672 | ||
673 | *p = '\0'; | |
674 | ||
675 | /* Send it over and over until we get a positive ack. */ | |
676 | ||
677 | do | |
678 | { | |
e0f9f062 | 679 | if (write_prim (buf2, p - buf2) != p - buf2) |
c906108c SS |
680 | { |
681 | perror ("putpkt(write)"); | |
f88c79e6 | 682 | free (buf2); |
c906108c SS |
683 | return -1; |
684 | } | |
685 | ||
c12a5089 | 686 | if (cs.noack_mode || is_notif) |
a6f3e723 SL |
687 | { |
688 | /* Don't expect an ack then. */ | |
689 | if (remote_debug) | |
690 | { | |
bd99dc85 | 691 | if (is_notif) |
4eefa7bc | 692 | debug_printf ("putpkt (\"%s\"); [notif]\n", buf2); |
bd99dc85 | 693 | else |
4eefa7bc PA |
694 | debug_printf ("putpkt (\"%s\"); [noack mode]\n", buf2); |
695 | debug_flush (); | |
a6f3e723 SL |
696 | } |
697 | break; | |
698 | } | |
699 | ||
c906108c | 700 | if (remote_debug) |
0d62e5e8 | 701 | { |
4eefa7bc PA |
702 | debug_printf ("putpkt (\"%s\"); [looking for ack]\n", buf2); |
703 | debug_flush (); | |
0d62e5e8 | 704 | } |
0d62e5e8 | 705 | |
bc3b5632 | 706 | cc = readchar (); |
c906108c | 707 | |
bc3b5632 DE |
708 | if (cc < 0) |
709 | { | |
0a30fbc4 | 710 | free (buf2); |
c906108c SS |
711 | return -1; |
712 | } | |
0d62e5e8 | 713 | |
bc3b5632 DE |
714 | if (remote_debug) |
715 | { | |
4eefa7bc PA |
716 | debug_printf ("[received '%c' (0x%x)]\n", cc, cc); |
717 | debug_flush (); | |
bc3b5632 DE |
718 | } |
719 | ||
0d62e5e8 | 720 | /* Check for an input interrupt while we're here. */ |
0bfdf32f | 721 | if (cc == '\003' && current_thread != NULL) |
ef57601b | 722 | (*the_target->request_interrupt) (); |
c906108c | 723 | } |
bc3b5632 | 724 | while (cc != '+'); |
c906108c | 725 | |
0a30fbc4 | 726 | free (buf2); |
c906108c SS |
727 | return 1; /* Success! */ |
728 | } | |
729 | ||
bd99dc85 PA |
730 | int |
731 | putpkt_binary (char *buf, int cnt) | |
732 | { | |
733 | return putpkt_binary_1 (buf, cnt, 0); | |
734 | } | |
735 | ||
01f9e8fa DJ |
736 | /* Send a packet to the remote machine, with error checking. The data |
737 | of the packet is in BUF, and the packet should be a NUL-terminated | |
738 | string. Returns >= 0 on success, -1 otherwise. */ | |
739 | ||
740 | int | |
741 | putpkt (char *buf) | |
742 | { | |
743 | return putpkt_binary (buf, strlen (buf)); | |
744 | } | |
745 | ||
bd99dc85 PA |
746 | int |
747 | putpkt_notif (char *buf) | |
748 | { | |
749 | return putpkt_binary_1 (buf, strlen (buf), 1); | |
750 | } | |
751 | ||
c906108c SS |
752 | /* Come here when we get an input interrupt from the remote side. This |
753 | interrupt should only be active while we are waiting for the child to do | |
bc3b5632 DE |
754 | something. Thus this assumes readchar:bufcnt is 0. |
755 | About the only thing that should come through is a ^C, which | |
ef57601b | 756 | will cause us to request child interruption. */ |
c906108c SS |
757 | |
758 | static void | |
0a30fbc4 | 759 | input_interrupt (int unused) |
c906108c | 760 | { |
cf30a8e1 C |
761 | fd_set readset; |
762 | struct timeval immediate = { 0, 0 }; | |
c906108c | 763 | |
cf30a8e1 C |
764 | /* Protect against spurious interrupts. This has been observed to |
765 | be a problem under NetBSD 1.4 and 1.5. */ | |
c906108c | 766 | |
cf30a8e1 C |
767 | FD_ZERO (&readset); |
768 | FD_SET (remote_desc, &readset); | |
769 | if (select (remote_desc + 1, &readset, 0, 0, &immediate) > 0) | |
c906108c | 770 | { |
cf30a8e1 | 771 | int cc; |
fd500816 | 772 | char c = 0; |
7390519e | 773 | |
e0f9f062 | 774 | cc = read_prim (&c, 1); |
c906108c | 775 | |
fafcc06a | 776 | if (cc == 0) |
cf30a8e1 | 777 | { |
fafcc06a SDJ |
778 | fprintf (stderr, "client connection closed\n"); |
779 | return; | |
780 | } | |
f0db101d | 781 | else if (cc != 1 || c != '\003') |
fafcc06a SDJ |
782 | { |
783 | fprintf (stderr, "input_interrupt, count = %d c = %d ", cc, c); | |
784 | if (isprint (c)) | |
785 | fprintf (stderr, "('%c')\n", c); | |
786 | else | |
787 | fprintf (stderr, "('\\x%02x')\n", c & 0xff); | |
cf30a8e1 C |
788 | return; |
789 | } | |
7390519e | 790 | |
ef57601b | 791 | (*the_target->request_interrupt) (); |
cf30a8e1 | 792 | } |
c906108c | 793 | } |
7390519e PA |
794 | |
795 | /* Check if the remote side sent us an interrupt request (^C). */ | |
796 | void | |
797 | check_remote_input_interrupt_request (void) | |
798 | { | |
799 | /* This function may be called before establishing communications, | |
800 | therefore we need to validate the remote descriptor. */ | |
801 | ||
802 | if (remote_desc == INVALID_DESCRIPTOR) | |
803 | return; | |
804 | ||
805 | input_interrupt (0); | |
806 | } | |
b80864fb | 807 | |
8b207339 YQ |
808 | /* Asynchronous I/O support. SIGIO must be unblocked when waiting, |
809 | in order to accept Control-C from the client, and must be blocked | |
810 | when talking to the client. */ | |
c906108c | 811 | |
a20d5e98 | 812 | static void |
8b207339 | 813 | block_unblock_async_io (int block) |
62ea82f5 | 814 | { |
b80864fb | 815 | #ifndef USE_WIN32API |
62ea82f5 | 816 | sigset_t sigio_set; |
a20d5e98 | 817 | |
62ea82f5 DJ |
818 | sigemptyset (&sigio_set); |
819 | sigaddset (&sigio_set, SIGIO); | |
8b207339 | 820 | sigprocmask (block ? SIG_BLOCK : SIG_UNBLOCK, &sigio_set, NULL); |
b80864fb | 821 | #endif |
62ea82f5 DJ |
822 | } |
823 | ||
ac8c974e AR |
824 | #ifdef __QNX__ |
825 | static void | |
826 | nto_comctrl (int enable) | |
827 | { | |
828 | struct sigevent event; | |
829 | ||
830 | if (enable) | |
831 | { | |
832 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
833 | event.sigev_signo = SIGIO; | |
834 | event.sigev_code = 0; | |
835 | event.sigev_value.sival_ptr = NULL; | |
836 | event.sigev_priority = -1; | |
837 | ionotify (remote_desc, _NOTIFY_ACTION_POLLARM, _NOTIFY_COND_INPUT, | |
838 | &event); | |
839 | } | |
840 | else | |
841 | ionotify (remote_desc, _NOTIFY_ACTION_POLL, _NOTIFY_COND_INPUT, NULL); | |
842 | } | |
843 | #endif /* __QNX__ */ | |
844 | ||
845 | ||
fd500816 DJ |
846 | /* Current state of asynchronous I/O. */ |
847 | static int async_io_enabled; | |
848 | ||
849 | /* Enable asynchronous I/O. */ | |
c906108c | 850 | void |
fba45db2 | 851 | enable_async_io (void) |
c906108c | 852 | { |
fd500816 DJ |
853 | if (async_io_enabled) |
854 | return; | |
855 | ||
8b207339 YQ |
856 | block_unblock_async_io (0); |
857 | ||
fd500816 | 858 | async_io_enabled = 1; |
ac8c974e AR |
859 | #ifdef __QNX__ |
860 | nto_comctrl (1); | |
861 | #endif /* __QNX__ */ | |
c906108c SS |
862 | } |
863 | ||
fd500816 | 864 | /* Disable asynchronous I/O. */ |
c906108c | 865 | void |
fba45db2 | 866 | disable_async_io (void) |
c906108c | 867 | { |
fd500816 DJ |
868 | if (!async_io_enabled) |
869 | return; | |
870 | ||
8b207339 YQ |
871 | block_unblock_async_io (1); |
872 | ||
fd500816 | 873 | async_io_enabled = 0; |
ac8c974e AR |
874 | #ifdef __QNX__ |
875 | nto_comctrl (0); | |
876 | #endif /* __QNX__ */ | |
877 | ||
c906108c SS |
878 | } |
879 | ||
a20d5e98 DJ |
880 | void |
881 | initialize_async_io (void) | |
882 | { | |
8b207339 | 883 | /* Make sure that async I/O starts blocked. */ |
a20d5e98 DJ |
884 | async_io_enabled = 1; |
885 | disable_async_io (); | |
886 | ||
8b207339 YQ |
887 | /* Install the signal handler. */ |
888 | #ifndef USE_WIN32API | |
889 | signal (SIGIO, input_interrupt); | |
890 | #endif | |
a20d5e98 DJ |
891 | } |
892 | ||
24b066ba DE |
893 | /* Internal buffer used by readchar. |
894 | These are global to readchar because reschedule_remote needs to be | |
895 | able to tell whether the buffer is empty. */ | |
896 | ||
897 | static unsigned char readchar_buf[BUFSIZ]; | |
898 | static int readchar_bufcnt = 0; | |
899 | static unsigned char *readchar_bufp; | |
900 | ||
c906108c SS |
901 | /* Returns next char from remote GDB. -1 if error. */ |
902 | ||
903 | static int | |
fba45db2 | 904 | readchar (void) |
c906108c | 905 | { |
24b066ba | 906 | int ch; |
c906108c | 907 | |
24b066ba DE |
908 | if (readchar_bufcnt == 0) |
909 | { | |
e0f9f062 | 910 | readchar_bufcnt = read_prim (readchar_buf, sizeof (readchar_buf)); |
c906108c | 911 | |
24b066ba DE |
912 | if (readchar_bufcnt <= 0) |
913 | { | |
914 | if (readchar_bufcnt == 0) | |
fddedbe6 PA |
915 | { |
916 | if (remote_debug) | |
4eefa7bc | 917 | debug_printf ("readchar: Got EOF\n"); |
fddedbe6 | 918 | } |
24b066ba DE |
919 | else |
920 | perror ("readchar"); | |
c906108c | 921 | |
24b066ba DE |
922 | return -1; |
923 | } | |
c906108c | 924 | |
24b066ba | 925 | readchar_bufp = readchar_buf; |
c906108c SS |
926 | } |
927 | ||
24b066ba DE |
928 | readchar_bufcnt--; |
929 | ch = *readchar_bufp++; | |
930 | reschedule (); | |
931 | return ch; | |
932 | } | |
933 | ||
934 | /* Reset the readchar state machine. */ | |
935 | ||
936 | static void | |
937 | reset_readchar (void) | |
938 | { | |
939 | readchar_bufcnt = 0; | |
940 | if (readchar_callback != NOT_SCHEDULED) | |
941 | { | |
942 | delete_callback_event (readchar_callback); | |
943 | readchar_callback = NOT_SCHEDULED; | |
944 | } | |
945 | } | |
946 | ||
947 | /* Process remaining data in readchar_buf. */ | |
948 | ||
949 | static int | |
950 | process_remaining (void *context) | |
951 | { | |
952 | int res; | |
953 | ||
954 | /* This is a one-shot event. */ | |
955 | readchar_callback = NOT_SCHEDULED; | |
956 | ||
957 | if (readchar_bufcnt > 0) | |
958 | res = handle_serial_event (0, NULL); | |
959 | else | |
960 | res = 0; | |
961 | ||
962 | return res; | |
963 | } | |
964 | ||
965 | /* If there is still data in the buffer, queue another event to process it, | |
966 | we can't sleep in select yet. */ | |
967 | ||
968 | static void | |
969 | reschedule (void) | |
970 | { | |
971 | if (readchar_bufcnt > 0 && readchar_callback == NOT_SCHEDULED) | |
972 | readchar_callback = append_callback_event (process_remaining, NULL); | |
c906108c SS |
973 | } |
974 | ||
975 | /* Read a packet from the remote machine, with error checking, | |
976 | and store it in BUF. Returns length of packet, or negative if error. */ | |
977 | ||
978 | int | |
fba45db2 | 979 | getpkt (char *buf) |
c906108c | 980 | { |
c12a5089 | 981 | client_state &cs = get_client_state (); |
c906108c SS |
982 | char *bp; |
983 | unsigned char csum, c1, c2; | |
984 | int c; | |
985 | ||
986 | while (1) | |
987 | { | |
988 | csum = 0; | |
989 | ||
990 | while (1) | |
991 | { | |
992 | c = readchar (); | |
5a0dd67a YQ |
993 | |
994 | /* The '\003' may appear before or after each packet, so | |
995 | check for an input interrupt. */ | |
996 | if (c == '\003') | |
997 | { | |
998 | (*the_target->request_interrupt) (); | |
999 | continue; | |
1000 | } | |
1001 | ||
c906108c SS |
1002 | if (c == '$') |
1003 | break; | |
1004 | if (remote_debug) | |
0d62e5e8 | 1005 | { |
4eefa7bc PA |
1006 | debug_printf ("[getpkt: discarding char '%c']\n", c); |
1007 | debug_flush (); | |
0d62e5e8 DJ |
1008 | } |
1009 | ||
c906108c SS |
1010 | if (c < 0) |
1011 | return -1; | |
1012 | } | |
1013 | ||
1014 | bp = buf; | |
1015 | while (1) | |
1016 | { | |
1017 | c = readchar (); | |
1018 | if (c < 0) | |
1019 | return -1; | |
1020 | if (c == '#') | |
1021 | break; | |
1022 | *bp++ = c; | |
1023 | csum += c; | |
1024 | } | |
1025 | *bp = 0; | |
1026 | ||
1027 | c1 = fromhex (readchar ()); | |
1028 | c2 = fromhex (readchar ()); | |
c5aa993b | 1029 | |
c906108c SS |
1030 | if (csum == (c1 << 4) + c2) |
1031 | break; | |
1032 | ||
c12a5089 | 1033 | if (cs.noack_mode) |
a6f3e723 | 1034 | { |
493e2a69 MS |
1035 | fprintf (stderr, |
1036 | "Bad checksum, sentsum=0x%x, csum=0x%x, " | |
1037 | "buf=%s [no-ack-mode, Bad medium?]\n", | |
a6f3e723 SL |
1038 | (c1 << 4) + c2, csum, buf); |
1039 | /* Not much we can do, GDB wasn't expecting an ack/nac. */ | |
1040 | break; | |
1041 | } | |
1042 | ||
c906108c SS |
1043 | fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n", |
1044 | (c1 << 4) + c2, csum, buf); | |
e0f9f062 | 1045 | if (write_prim ("-", 1) != 1) |
e581f2b4 | 1046 | return -1; |
c906108c SS |
1047 | } |
1048 | ||
c12a5089 | 1049 | if (!cs.noack_mode) |
0d62e5e8 | 1050 | { |
a6f3e723 SL |
1051 | if (remote_debug) |
1052 | { | |
4eefa7bc PA |
1053 | debug_printf ("getpkt (\"%s\"); [sending ack] \n", buf); |
1054 | debug_flush (); | |
a6f3e723 | 1055 | } |
c906108c | 1056 | |
e0f9f062 | 1057 | if (write_prim ("+", 1) != 1) |
e581f2b4 | 1058 | return -1; |
c906108c | 1059 | |
a6f3e723 SL |
1060 | if (remote_debug) |
1061 | { | |
4eefa7bc PA |
1062 | debug_printf ("[sent ack]\n"); |
1063 | debug_flush (); | |
a6f3e723 | 1064 | } |
0d62e5e8 | 1065 | } |
86b1f9c5 PM |
1066 | else |
1067 | { | |
1068 | if (remote_debug) | |
1069 | { | |
4eefa7bc PA |
1070 | debug_printf ("getpkt (\"%s\"); [no ack sent] \n", buf); |
1071 | debug_flush (); | |
86b1f9c5 PM |
1072 | } |
1073 | } | |
0d62e5e8 | 1074 | |
18879fef YQ |
1075 | /* The readchar above may have already read a '\003' out of the socket |
1076 | and moved it to the local buffer. For example, when GDB sends | |
1077 | vCont;c immediately followed by interrupt (see | |
1078 | gdb.base/interrupt-noterm.exp). As soon as we see the vCont;c, we'll | |
1079 | resume the inferior and wait. Since we've already moved the '\003' | |
1080 | to the local buffer, SIGIO won't help. In that case, if we don't | |
1081 | check for interrupt after the vCont;c packet, the interrupt character | |
1082 | would stay in the buffer unattended until after the next (unrelated) | |
1083 | stop. */ | |
1084 | while (readchar_bufcnt > 0 && *readchar_bufp == '\003') | |
1085 | { | |
1086 | /* Consume the interrupt character in the buffer. */ | |
1087 | readchar (); | |
1088 | (*the_target->request_interrupt) (); | |
1089 | } | |
1090 | ||
c906108c SS |
1091 | return bp - buf; |
1092 | } | |
1093 | ||
1094 | void | |
fba45db2 | 1095 | write_ok (char *buf) |
c906108c SS |
1096 | { |
1097 | buf[0] = 'O'; | |
1098 | buf[1] = 'K'; | |
1099 | buf[2] = '\0'; | |
1100 | } | |
1101 | ||
1102 | void | |
fba45db2 | 1103 | write_enn (char *buf) |
c906108c | 1104 | { |
c89dc5d4 | 1105 | /* Some day, we should define the meanings of the error codes... */ |
c906108c | 1106 | buf[0] = 'E'; |
c89dc5d4 DJ |
1107 | buf[1] = '0'; |
1108 | buf[2] = '1'; | |
c906108c SS |
1109 | buf[3] = '\0'; |
1110 | } | |
1111 | ||
0fb4aa4b PA |
1112 | #endif |
1113 | ||
0fb4aa4b | 1114 | #ifndef IN_PROCESS_AGENT |
c906108c | 1115 | |
c906108c | 1116 | static char * |
442ea881 | 1117 | outreg (struct regcache *regcache, int regno, char *buf) |
c906108c | 1118 | { |
5c44784c JM |
1119 | if ((regno >> 12) != 0) |
1120 | *buf++ = tohex ((regno >> 12) & 0xf); | |
1121 | if ((regno >> 8) != 0) | |
1122 | *buf++ = tohex ((regno >> 8) & 0xf); | |
1123 | *buf++ = tohex ((regno >> 4) & 0xf); | |
c906108c SS |
1124 | *buf++ = tohex (regno & 0xf); |
1125 | *buf++ = ':'; | |
442ea881 | 1126 | collect_register_as_string (regcache, regno, buf); |
3aee8918 | 1127 | buf += 2 * register_size (regcache->tdesc, regno); |
c906108c SS |
1128 | *buf++ = ';'; |
1129 | ||
1130 | return buf; | |
1131 | } | |
1132 | ||
1133 | void | |
95954743 | 1134 | prepare_resume_reply (char *buf, ptid_t ptid, |
5b1c542e | 1135 | struct target_waitstatus *status) |
c906108c | 1136 | { |
c12a5089 | 1137 | client_state &cs = get_client_state (); |
5b1c542e | 1138 | if (debug_threads) |
87ce2a04 DE |
1139 | debug_printf ("Writing resume reply for %s:%d\n", |
1140 | target_pid_to_str (ptid), status->kind); | |
c906108c | 1141 | |
5b1c542e | 1142 | switch (status->kind) |
c906108c | 1143 | { |
5b1c542e | 1144 | case TARGET_WAITKIND_STOPPED: |
de0d863e | 1145 | case TARGET_WAITKIND_FORKED: |
c269dbdb | 1146 | case TARGET_WAITKIND_VFORKED: |
8228463c | 1147 | case TARGET_WAITKIND_VFORK_DONE: |
94585166 | 1148 | case TARGET_WAITKIND_EXECD: |
65706a29 | 1149 | case TARGET_WAITKIND_THREAD_CREATED: |
82075af2 JS |
1150 | case TARGET_WAITKIND_SYSCALL_ENTRY: |
1151 | case TARGET_WAITKIND_SYSCALL_RETURN: | |
5b1c542e | 1152 | { |
0bfdf32f | 1153 | struct thread_info *saved_thread; |
5b1c542e | 1154 | const char **regp; |
442ea881 | 1155 | struct regcache *regcache; |
e013ee27 | 1156 | |
c12a5089 | 1157 | if ((status->kind == TARGET_WAITKIND_FORKED && cs.report_fork_events) |
80e24d09 | 1158 | || (status->kind == TARGET_WAITKIND_VFORKED |
c12a5089 | 1159 | && cs.report_vfork_events)) |
de0d863e DB |
1160 | { |
1161 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
c269dbdb DB |
1162 | const char *event = (status->kind == TARGET_WAITKIND_FORKED |
1163 | ? "fork" : "vfork"); | |
de0d863e | 1164 | |
c269dbdb | 1165 | sprintf (buf, "T%02x%s:", signal, event); |
de0d863e DB |
1166 | buf += strlen (buf); |
1167 | buf = write_ptid (buf, status->value.related_pid); | |
1168 | strcat (buf, ";"); | |
1169 | } | |
80e24d09 | 1170 | else if (status->kind == TARGET_WAITKIND_VFORK_DONE |
c12a5089 | 1171 | && cs.report_vfork_events) |
8228463c PA |
1172 | { |
1173 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1174 | ||
1175 | sprintf (buf, "T%02xvforkdone:;", signal); | |
1176 | } | |
c12a5089 | 1177 | else if (status->kind == TARGET_WAITKIND_EXECD && cs.report_exec_events) |
94585166 DB |
1178 | { |
1179 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1180 | const char *event = "exec"; | |
1181 | char hexified_pathname[PATH_MAX * 2]; | |
1182 | ||
1183 | sprintf (buf, "T%02x%s:", signal, event); | |
1184 | buf += strlen (buf); | |
1185 | ||
1186 | /* Encode pathname to hexified format. */ | |
1187 | bin2hex ((const gdb_byte *) status->value.execd_pathname, | |
1188 | hexified_pathname, | |
1189 | strlen (status->value.execd_pathname)); | |
1190 | ||
1191 | sprintf (buf, "%s;", hexified_pathname); | |
1192 | xfree (status->value.execd_pathname); | |
1193 | status->value.execd_pathname = NULL; | |
1194 | buf += strlen (buf); | |
1195 | } | |
65706a29 | 1196 | else if (status->kind == TARGET_WAITKIND_THREAD_CREATED |
c12a5089 | 1197 | && cs.report_thread_events) |
65706a29 PA |
1198 | { |
1199 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1200 | ||
1201 | sprintf (buf, "T%02xcreate:;", signal); | |
1202 | } | |
82075af2 JS |
1203 | else if (status->kind == TARGET_WAITKIND_SYSCALL_ENTRY |
1204 | || status->kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
1205 | { | |
1206 | enum gdb_signal signal = GDB_SIGNAL_TRAP; | |
1207 | const char *event = (status->kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
1208 | ? "syscall_entry" : "syscall_return"); | |
1209 | ||
1210 | sprintf (buf, "T%02x%s:%x;", signal, event, | |
1211 | status->value.syscall_number); | |
1212 | } | |
de0d863e DB |
1213 | else |
1214 | sprintf (buf, "T%02x", status->value.sig); | |
1215 | ||
5b1c542e | 1216 | buf += strlen (buf); |
e013ee27 | 1217 | |
0bfdf32f | 1218 | saved_thread = current_thread; |
e013ee27 | 1219 | |
75352e28 | 1220 | switch_to_thread (ptid); |
e013ee27 | 1221 | |
3aee8918 PA |
1222 | regp = current_target_desc ()->expedite_regs; |
1223 | ||
0bfdf32f | 1224 | regcache = get_thread_regcache (current_thread, 1); |
442ea881 | 1225 | |
5b1c542e PA |
1226 | if (the_target->stopped_by_watchpoint != NULL |
1227 | && (*the_target->stopped_by_watchpoint) ()) | |
1228 | { | |
1229 | CORE_ADDR addr; | |
1230 | int i; | |
c906108c | 1231 | |
29f9a567 | 1232 | memcpy (buf, "watch:", 6); |
5b1c542e | 1233 | buf += 6; |
0d62e5e8 | 1234 | |
5b1c542e | 1235 | addr = (*the_target->stopped_data_address) (); |
255e7678 | 1236 | |
5b1c542e PA |
1237 | /* Convert each byte of the address into two hexadecimal |
1238 | chars. Note that we take sizeof (void *) instead of | |
1239 | sizeof (addr); this is to avoid sending a 64-bit | |
1240 | address to a 32-bit GDB. */ | |
1241 | for (i = sizeof (void *) * 2; i > 0; i--) | |
1242 | *buf++ = tohex ((addr >> (i - 1) * 4) & 0xf); | |
1243 | *buf++ = ';'; | |
1244 | } | |
c12a5089 | 1245 | else if (cs.swbreak_feature && target_stopped_by_sw_breakpoint ()) |
1ec68e26 PA |
1246 | { |
1247 | sprintf (buf, "swbreak:;"); | |
1248 | buf += strlen (buf); | |
1249 | } | |
c12a5089 | 1250 | else if (cs.hwbreak_feature && target_stopped_by_hw_breakpoint ()) |
1ec68e26 PA |
1251 | { |
1252 | sprintf (buf, "hwbreak:;"); | |
1253 | buf += strlen (buf); | |
1254 | } | |
5b1c542e PA |
1255 | |
1256 | while (*regp) | |
1257 | { | |
3aee8918 | 1258 | buf = outreg (regcache, find_regno (regcache->tdesc, *regp), buf); |
5b1c542e PA |
1259 | regp ++; |
1260 | } | |
5472f405 | 1261 | *buf = '\0'; |
5b1c542e PA |
1262 | |
1263 | /* Formerly, if the debugger had not used any thread features | |
1264 | we would not burden it with a thread status response. This | |
1265 | was for the benefit of GDB 4.13 and older. However, in | |
1266 | recent GDB versions the check (``if (cont_thread != 0)'') | |
1267 | does not have the desired effect because of sillyness in | |
1268 | the way that the remote protocol handles specifying a | |
1269 | thread. Since thread support relies on qSymbol support | |
1270 | anyway, assume GDB can handle threads. */ | |
1271 | ||
1272 | if (using_threads && !disable_packet_Tthread) | |
1273 | { | |
1274 | /* This if (1) ought to be unnecessary. But remote_wait | |
1275 | in GDB will claim this event belongs to inferior_ptid | |
1276 | if we do not specify a thread, and there's no way for | |
1277 | gdbserver to know what inferior_ptid is. */ | |
d7e15655 | 1278 | if (1 || cs.general_thread != ptid) |
5b1c542e | 1279 | { |
dc146f7c | 1280 | int core = -1; |
bd99dc85 PA |
1281 | /* In non-stop, don't change the general thread behind |
1282 | GDB's back. */ | |
1283 | if (!non_stop) | |
c12a5089 | 1284 | cs.general_thread = ptid; |
95954743 PA |
1285 | sprintf (buf, "thread:"); |
1286 | buf += strlen (buf); | |
1287 | buf = write_ptid (buf, ptid); | |
1288 | strcat (buf, ";"); | |
5b1c542e | 1289 | buf += strlen (buf); |
dc146f7c | 1290 | |
3e10640f YQ |
1291 | core = target_core_of_thread (ptid); |
1292 | ||
dc146f7c VP |
1293 | if (core != -1) |
1294 | { | |
1295 | sprintf (buf, "core:"); | |
1296 | buf += strlen (buf); | |
1297 | sprintf (buf, "%x", core); | |
1298 | strcat (buf, ";"); | |
1299 | buf += strlen (buf); | |
1300 | } | |
5b1c542e PA |
1301 | } |
1302 | } | |
1303 | ||
1304 | if (dlls_changed) | |
1305 | { | |
1306 | strcpy (buf, "library:;"); | |
1307 | buf += strlen (buf); | |
1308 | dlls_changed = 0; | |
1309 | } | |
1310 | ||
0bfdf32f | 1311 | current_thread = saved_thread; |
5b1c542e PA |
1312 | } |
1313 | break; | |
1314 | case TARGET_WAITKIND_EXITED: | |
c12a5089 | 1315 | if (cs.multi_process) |
95954743 | 1316 | sprintf (buf, "W%x;process:%x", |
e99b03dc | 1317 | status->value.integer, ptid.pid ()); |
95954743 PA |
1318 | else |
1319 | sprintf (buf, "W%02x", status->value.integer); | |
5b1c542e PA |
1320 | break; |
1321 | case TARGET_WAITKIND_SIGNALLED: | |
c12a5089 | 1322 | if (cs.multi_process) |
95954743 | 1323 | sprintf (buf, "X%x;process:%x", |
e99b03dc | 1324 | status->value.sig, ptid.pid ()); |
95954743 PA |
1325 | else |
1326 | sprintf (buf, "X%02x", status->value.sig); | |
5b1c542e | 1327 | break; |
65706a29 PA |
1328 | case TARGET_WAITKIND_THREAD_EXITED: |
1329 | sprintf (buf, "w%x;", status->value.integer); | |
1330 | buf += strlen (buf); | |
1331 | buf = write_ptid (buf, ptid); | |
1332 | break; | |
f2faf941 PA |
1333 | case TARGET_WAITKIND_NO_RESUMED: |
1334 | sprintf (buf, "N"); | |
1335 | break; | |
5b1c542e PA |
1336 | default: |
1337 | error ("unhandled waitkind"); | |
1338 | break; | |
c906108c | 1339 | } |
c906108c SS |
1340 | } |
1341 | ||
1342 | void | |
fba45db2 | 1343 | decode_m_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr) |
c906108c SS |
1344 | { |
1345 | int i = 0, j = 0; | |
1346 | char ch; | |
1347 | *mem_addr_ptr = *len_ptr = 0; | |
1348 | ||
1349 | while ((ch = from[i++]) != ',') | |
1350 | { | |
1351 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1352 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1353 | } | |
1354 | ||
1355 | for (j = 0; j < 4; j++) | |
1356 | { | |
1357 | if ((ch = from[i++]) == 0) | |
1358 | break; | |
1359 | *len_ptr = *len_ptr << 4; | |
1360 | *len_ptr |= fromhex (ch) & 0x0f; | |
1361 | } | |
1362 | } | |
1363 | ||
1364 | void | |
fba45db2 | 1365 | decode_M_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr, |
fa593d66 | 1366 | unsigned char **to_p) |
c906108c SS |
1367 | { |
1368 | int i = 0; | |
1369 | char ch; | |
1370 | *mem_addr_ptr = *len_ptr = 0; | |
1371 | ||
1372 | while ((ch = from[i++]) != ',') | |
1373 | { | |
1374 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1375 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1376 | } | |
1377 | ||
1378 | while ((ch = from[i++]) != ':') | |
1379 | { | |
1380 | *len_ptr = *len_ptr << 4; | |
1381 | *len_ptr |= fromhex (ch) & 0x0f; | |
1382 | } | |
1383 | ||
fa593d66 | 1384 | if (*to_p == NULL) |
224c3ddb | 1385 | *to_p = (unsigned char *) xmalloc (*len_ptr); |
fa593d66 | 1386 | |
a7191e8b | 1387 | hex2bin (&from[i++], *to_p, *len_ptr); |
c906108c | 1388 | } |
2f2893d9 | 1389 | |
01f9e8fa DJ |
1390 | int |
1391 | decode_X_packet (char *from, int packet_len, CORE_ADDR *mem_addr_ptr, | |
fa593d66 | 1392 | unsigned int *len_ptr, unsigned char **to_p) |
01f9e8fa DJ |
1393 | { |
1394 | int i = 0; | |
1395 | char ch; | |
1396 | *mem_addr_ptr = *len_ptr = 0; | |
1397 | ||
1398 | while ((ch = from[i++]) != ',') | |
1399 | { | |
1400 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1401 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1402 | } | |
1403 | ||
1404 | while ((ch = from[i++]) != ':') | |
1405 | { | |
1406 | *len_ptr = *len_ptr << 4; | |
1407 | *len_ptr |= fromhex (ch) & 0x0f; | |
1408 | } | |
1409 | ||
fa593d66 | 1410 | if (*to_p == NULL) |
224c3ddb | 1411 | *to_p = (unsigned char *) xmalloc (*len_ptr); |
fa593d66 | 1412 | |
01f9e8fa | 1413 | if (remote_unescape_input ((const gdb_byte *) &from[i], packet_len - i, |
fa593d66 | 1414 | *to_p, *len_ptr) != *len_ptr) |
01f9e8fa DJ |
1415 | return -1; |
1416 | ||
1417 | return 0; | |
1418 | } | |
1419 | ||
0e7f50da | 1420 | /* Decode a qXfer write request. */ |
d08aafef | 1421 | |
0e7f50da | 1422 | int |
d08aafef | 1423 | decode_xfer_write (char *buf, int packet_len, CORE_ADDR *offset, |
0e7f50da UW |
1424 | unsigned int *len, unsigned char *data) |
1425 | { | |
1426 | char ch; | |
d08aafef | 1427 | char *b = buf; |
0e7f50da UW |
1428 | |
1429 | /* Extract the offset. */ | |
1430 | *offset = 0; | |
1431 | while ((ch = *buf++) != ':') | |
1432 | { | |
1433 | *offset = *offset << 4; | |
1434 | *offset |= fromhex (ch) & 0x0f; | |
1435 | } | |
1436 | ||
1437 | /* Get encoded data. */ | |
d08aafef | 1438 | packet_len -= buf - b; |
0e7f50da UW |
1439 | *len = remote_unescape_input ((const gdb_byte *) buf, packet_len, |
1440 | data, packet_len); | |
1441 | return 0; | |
1442 | } | |
1443 | ||
08388c79 DE |
1444 | /* Decode the parameters of a qSearch:memory packet. */ |
1445 | ||
1446 | int | |
1447 | decode_search_memory_packet (const char *buf, int packet_len, | |
1448 | CORE_ADDR *start_addrp, | |
1449 | CORE_ADDR *search_space_lenp, | |
1450 | gdb_byte *pattern, unsigned int *pattern_lenp) | |
1451 | { | |
1452 | const char *p = buf; | |
1453 | ||
1454 | p = decode_address_to_semicolon (start_addrp, p); | |
1455 | p = decode_address_to_semicolon (search_space_lenp, p); | |
1456 | packet_len -= p - buf; | |
1457 | *pattern_lenp = remote_unescape_input ((const gdb_byte *) p, packet_len, | |
1458 | pattern, packet_len); | |
1459 | return 0; | |
1460 | } | |
1461 | ||
95954743 PA |
1462 | static void |
1463 | free_sym_cache (struct sym_cache *sym) | |
1464 | { | |
1465 | if (sym != NULL) | |
1466 | { | |
1467 | free (sym->name); | |
1468 | free (sym); | |
1469 | } | |
1470 | } | |
1471 | ||
1472 | void | |
1473 | clear_symbol_cache (struct sym_cache **symcache_p) | |
1474 | { | |
1475 | struct sym_cache *sym, *next; | |
1476 | ||
1477 | /* Check the cache first. */ | |
1478 | for (sym = *symcache_p; sym; sym = next) | |
1479 | { | |
1480 | next = sym->next; | |
1481 | free_sym_cache (sym); | |
1482 | } | |
1483 | ||
1484 | *symcache_p = NULL; | |
1485 | } | |
1486 | ||
9836d6ea PA |
1487 | /* Get the address of NAME, and return it in ADDRP if found. if |
1488 | MAY_ASK_GDB is false, assume symbol cache misses are failures. | |
fd500816 DJ |
1489 | Returns 1 if the symbol is found, 0 if it is not, -1 on error. */ |
1490 | ||
2f2893d9 | 1491 | int |
9836d6ea | 1492 | look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb) |
2f2893d9 | 1493 | { |
c12a5089 | 1494 | client_state &cs = get_client_state (); |
28170b88 | 1495 | char *p, *q; |
2f2893d9 | 1496 | int len; |
fd500816 | 1497 | struct sym_cache *sym; |
95954743 PA |
1498 | struct process_info *proc; |
1499 | ||
1500 | proc = current_process (); | |
fd500816 DJ |
1501 | |
1502 | /* Check the cache first. */ | |
95954743 | 1503 | for (sym = proc->symbol_cache; sym; sym = sym->next) |
fd500816 DJ |
1504 | if (strcmp (name, sym->name) == 0) |
1505 | { | |
1506 | *addrp = sym->addr; | |
1507 | return 1; | |
1508 | } | |
2f2893d9 | 1509 | |
9836d6ea PA |
1510 | /* It might not be an appropriate time to look up a symbol, |
1511 | e.g. while we're trying to fetch registers. */ | |
1512 | if (!may_ask_gdb) | |
ea025f5f DJ |
1513 | return 0; |
1514 | ||
2f2893d9 | 1515 | /* Send the request. */ |
c12a5089 SC |
1516 | strcpy (cs.own_buf, "qSymbol:"); |
1517 | bin2hex ((const gdb_byte *) name, cs.own_buf + strlen ("qSymbol:"), | |
971dc0b8 | 1518 | strlen (name)); |
c12a5089 | 1519 | if (putpkt (cs.own_buf) < 0) |
2f2893d9 DJ |
1520 | return -1; |
1521 | ||
1522 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
c12a5089 | 1523 | len = getpkt (cs.own_buf); |
2f2893d9 DJ |
1524 | if (len < 0) |
1525 | return -1; | |
1526 | ||
2bbe3cc1 DJ |
1527 | /* We ought to handle pretty much any packet at this point while we |
1528 | wait for the qSymbol "response". That requires re-entering the | |
1529 | main loop. For now, this is an adequate approximation; allow | |
28170b88 MK |
1530 | GDB to read from memory and handle 'v' packets (for vFile transfers) |
1531 | while it figures out the address of the symbol. */ | |
1532 | while (1) | |
2bbe3cc1 | 1533 | { |
c12a5089 | 1534 | if (cs.own_buf[0] == 'm') |
28170b88 MK |
1535 | { |
1536 | CORE_ADDR mem_addr; | |
1537 | unsigned char *mem_buf; | |
1538 | unsigned int mem_len; | |
1539 | ||
c12a5089 | 1540 | decode_m_packet (&cs.own_buf[1], &mem_addr, &mem_len); |
28170b88 MK |
1541 | mem_buf = (unsigned char *) xmalloc (mem_len); |
1542 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) | |
c12a5089 | 1543 | bin2hex (mem_buf, cs.own_buf, mem_len); |
28170b88 | 1544 | else |
c12a5089 | 1545 | write_enn (cs.own_buf); |
28170b88 | 1546 | free (mem_buf); |
c12a5089 | 1547 | if (putpkt (cs.own_buf) < 0) |
28170b88 MK |
1548 | return -1; |
1549 | } | |
c12a5089 | 1550 | else if (cs.own_buf[0] == 'v') |
28170b88 MK |
1551 | { |
1552 | int new_len = -1; | |
c12a5089 | 1553 | handle_v_requests (cs.own_buf, len, &new_len); |
28170b88 | 1554 | if (new_len != -1) |
c12a5089 | 1555 | putpkt_binary (cs.own_buf, new_len); |
28170b88 | 1556 | else |
c12a5089 | 1557 | putpkt (cs.own_buf); |
28170b88 | 1558 | } |
2bbe3cc1 | 1559 | else |
28170b88 | 1560 | break; |
c12a5089 | 1561 | len = getpkt (cs.own_buf); |
2bbe3cc1 DJ |
1562 | if (len < 0) |
1563 | return -1; | |
1564 | } | |
1b3f6016 | 1565 | |
c12a5089 | 1566 | if (!startswith (cs.own_buf, "qSymbol:")) |
2f2893d9 | 1567 | { |
c12a5089 | 1568 | warning ("Malformed response to qSymbol, ignoring: %s\n", cs.own_buf); |
2f2893d9 DJ |
1569 | return -1; |
1570 | } | |
1571 | ||
c12a5089 | 1572 | p = cs.own_buf + strlen ("qSymbol:"); |
2f2893d9 DJ |
1573 | q = p; |
1574 | while (*q && *q != ':') | |
1575 | q++; | |
1576 | ||
1577 | /* Make sure we found a value for the symbol. */ | |
1578 | if (p == q || *q == '\0') | |
1579 | return 0; | |
1580 | ||
1581 | decode_address (addrp, p, q - p); | |
fd500816 DJ |
1582 | |
1583 | /* Save the symbol in our cache. */ | |
8d749320 | 1584 | sym = XNEW (struct sym_cache); |
bca929d3 | 1585 | sym->name = xstrdup (name); |
fd500816 | 1586 | sym->addr = *addrp; |
95954743 PA |
1587 | sym->next = proc->symbol_cache; |
1588 | proc->symbol_cache = sym; | |
fd500816 | 1589 | |
2f2893d9 DJ |
1590 | return 1; |
1591 | } | |
c74d0ad8 | 1592 | |
fa593d66 PA |
1593 | /* Relocate an instruction to execute at a different address. OLDLOC |
1594 | is the address in the inferior memory where the instruction to | |
1595 | relocate is currently at. On input, TO points to the destination | |
1596 | where we want the instruction to be copied (and possibly adjusted) | |
1597 | to. On output, it points to one past the end of the resulting | |
1598 | instruction(s). The effect of executing the instruction at TO | |
86a30030 | 1599 | shall be the same as if executing it at OLDLOC. For example, call |
fa593d66 PA |
1600 | instructions that implicitly push the return address on the stack |
1601 | should be adjusted to return to the instruction after OLDLOC; | |
1602 | relative branches, and other PC-relative instructions need the | |
1603 | offset adjusted; etc. Returns 0 on success, -1 on failure. */ | |
1604 | ||
1605 | int | |
1606 | relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc) | |
1607 | { | |
c12a5089 | 1608 | client_state &cs = get_client_state (); |
fa593d66 PA |
1609 | int len; |
1610 | ULONGEST written = 0; | |
1611 | ||
1612 | /* Send the request. */ | |
c12a5089 | 1613 | sprintf (cs.own_buf, "qRelocInsn:%s;%s", paddress (oldloc), |
fa593d66 | 1614 | paddress (*to)); |
c12a5089 | 1615 | if (putpkt (cs.own_buf) < 0) |
fa593d66 PA |
1616 | return -1; |
1617 | ||
1618 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
c12a5089 | 1619 | len = getpkt (cs.own_buf); |
fa593d66 PA |
1620 | if (len < 0) |
1621 | return -1; | |
1622 | ||
1623 | /* We ought to handle pretty much any packet at this point while we | |
1624 | wait for the qRelocInsn "response". That requires re-entering | |
1625 | the main loop. For now, this is an adequate approximation; allow | |
1626 | GDB to access memory. */ | |
c12a5089 | 1627 | while (cs.own_buf[0] == 'm' || cs.own_buf[0] == 'M' || cs.own_buf[0] == 'X') |
fa593d66 PA |
1628 | { |
1629 | CORE_ADDR mem_addr; | |
1630 | unsigned char *mem_buf = NULL; | |
1631 | unsigned int mem_len; | |
1632 | ||
c12a5089 | 1633 | if (cs.own_buf[0] == 'm') |
fa593d66 | 1634 | { |
c12a5089 | 1635 | decode_m_packet (&cs.own_buf[1], &mem_addr, &mem_len); |
224c3ddb | 1636 | mem_buf = (unsigned char *) xmalloc (mem_len); |
fa593d66 | 1637 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) |
c12a5089 | 1638 | bin2hex (mem_buf, cs.own_buf, mem_len); |
fa593d66 | 1639 | else |
c12a5089 | 1640 | write_enn (cs.own_buf); |
fa593d66 | 1641 | } |
c12a5089 | 1642 | else if (cs.own_buf[0] == 'X') |
fa593d66 | 1643 | { |
c12a5089 | 1644 | if (decode_X_packet (&cs.own_buf[1], len - 1, &mem_addr, |
fa593d66 PA |
1645 | &mem_len, &mem_buf) < 0 |
1646 | || write_inferior_memory (mem_addr, mem_buf, mem_len) != 0) | |
c12a5089 | 1647 | write_enn (cs.own_buf); |
fa593d66 | 1648 | else |
c12a5089 | 1649 | write_ok (cs.own_buf); |
fa593d66 PA |
1650 | } |
1651 | else | |
1652 | { | |
c12a5089 | 1653 | decode_M_packet (&cs.own_buf[1], &mem_addr, &mem_len, &mem_buf); |
fa593d66 | 1654 | if (write_inferior_memory (mem_addr, mem_buf, mem_len) == 0) |
c12a5089 | 1655 | write_ok (cs.own_buf); |
fa593d66 | 1656 | else |
c12a5089 | 1657 | write_enn (cs.own_buf); |
fa593d66 PA |
1658 | } |
1659 | free (mem_buf); | |
c12a5089 | 1660 | if (putpkt (cs.own_buf) < 0) |
fa593d66 | 1661 | return -1; |
c12a5089 | 1662 | len = getpkt (cs.own_buf); |
fa593d66 PA |
1663 | if (len < 0) |
1664 | return -1; | |
1665 | } | |
1666 | ||
c12a5089 | 1667 | if (cs.own_buf[0] == 'E') |
fa593d66 PA |
1668 | { |
1669 | warning ("An error occurred while relocating an instruction: %s\n", | |
c12a5089 | 1670 | cs.own_buf); |
fa593d66 PA |
1671 | return -1; |
1672 | } | |
1673 | ||
c12a5089 | 1674 | if (!startswith (cs.own_buf, "qRelocInsn:")) |
fa593d66 PA |
1675 | { |
1676 | warning ("Malformed response to qRelocInsn, ignoring: %s\n", | |
c12a5089 | 1677 | cs.own_buf); |
fa593d66 PA |
1678 | return -1; |
1679 | } | |
1680 | ||
c12a5089 | 1681 | unpack_varlen_hex (cs.own_buf + strlen ("qRelocInsn:"), &written); |
fa593d66 PA |
1682 | |
1683 | *to += written; | |
1684 | return 0; | |
1685 | } | |
1686 | ||
c74d0ad8 | 1687 | void |
bce7165d | 1688 | monitor_output (const char *msg) |
c74d0ad8 | 1689 | { |
0a822afb | 1690 | int len = strlen (msg); |
224c3ddb | 1691 | char *buf = (char *) xmalloc (len * 2 + 2); |
c74d0ad8 DJ |
1692 | |
1693 | buf[0] = 'O'; | |
971dc0b8 | 1694 | bin2hex ((const gdb_byte *) msg, buf + 1, len); |
c74d0ad8 DJ |
1695 | |
1696 | putpkt (buf); | |
1697 | free (buf); | |
1698 | } | |
255e7678 | 1699 | |
0fb4aa4b | 1700 | #endif |