Commit | Line | Data |
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c906108c | 1 | /* Remote utility routines for the remote server for GDB. |
6aba47ca | 2 | Copyright (C) 1986, 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
7b6bb8da | 3 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
9b254dd1 | 4 | Free Software Foundation, Inc. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
20 | |
21 | #include "server.h" | |
22 | #include "terminal.h" | |
5b1c542e | 23 | #include "target.h" |
c906108c SS |
24 | #include <stdio.h> |
25 | #include <string.h> | |
b80864fb | 26 | #if HAVE_SYS_IOCTL_H |
c906108c | 27 | #include <sys/ioctl.h> |
b80864fb | 28 | #endif |
68070c10 | 29 | #if HAVE_SYS_FILE_H |
c906108c | 30 | #include <sys/file.h> |
68070c10 | 31 | #endif |
b80864fb | 32 | #if HAVE_NETINET_IN_H |
c906108c | 33 | #include <netinet/in.h> |
b80864fb DJ |
34 | #endif |
35 | #if HAVE_SYS_SOCKET_H | |
c906108c | 36 | #include <sys/socket.h> |
b80864fb DJ |
37 | #endif |
38 | #if HAVE_NETDB_H | |
c906108c | 39 | #include <netdb.h> |
b80864fb DJ |
40 | #endif |
41 | #if HAVE_NETINET_TCP_H | |
c906108c | 42 | #include <netinet/tcp.h> |
b80864fb DJ |
43 | #endif |
44 | #if HAVE_SYS_IOCTL_H | |
c906108c | 45 | #include <sys/ioctl.h> |
b80864fb | 46 | #endif |
68070c10 | 47 | #if HAVE_SIGNAL_H |
c906108c | 48 | #include <signal.h> |
68070c10 PA |
49 | #endif |
50 | #if HAVE_FCNTL_H | |
c906108c | 51 | #include <fcntl.h> |
68070c10 | 52 | #endif |
cf30a8e1 | 53 | #include <sys/time.h> |
68070c10 | 54 | #if HAVE_UNISTD_H |
cf30a8e1 | 55 | #include <unistd.h> |
68070c10 | 56 | #endif |
b80864fb | 57 | #if HAVE_ARPA_INET_H |
0729219d | 58 | #include <arpa/inet.h> |
b80864fb | 59 | #endif |
8264bb58 | 60 | #include <sys/stat.h> |
68070c10 | 61 | #if HAVE_ERRNO_H |
8264bb58 | 62 | #include <errno.h> |
68070c10 | 63 | #endif |
b80864fb DJ |
64 | |
65 | #if USE_WIN32API | |
12ea4b69 | 66 | #include <winsock2.h> |
b80864fb | 67 | #endif |
c906108c | 68 | |
ac8c974e AR |
69 | #if __QNX__ |
70 | #include <sys/iomgr.h> | |
71 | #endif /* __QNX__ */ | |
72 | ||
f450004a DJ |
73 | #ifndef HAVE_SOCKLEN_T |
74 | typedef int socklen_t; | |
75 | #endif | |
76 | ||
0fb4aa4b PA |
77 | #ifndef IN_PROCESS_AGENT |
78 | ||
7390519e PA |
79 | #if USE_WIN32API |
80 | # define INVALID_DESCRIPTOR INVALID_SOCKET | |
81 | #else | |
82 | # define INVALID_DESCRIPTOR -1 | |
83 | #endif | |
84 | ||
24b066ba DE |
85 | /* Extra value for readchar_callback. */ |
86 | enum { | |
87 | /* The callback is currently not scheduled. */ | |
88 | NOT_SCHEDULED = -1 | |
89 | }; | |
90 | ||
91 | /* Status of the readchar callback. | |
92 | Either NOT_SCHEDULED or the callback id. */ | |
93 | static int readchar_callback = NOT_SCHEDULED; | |
94 | ||
bc3b5632 | 95 | static int readchar (void); |
24b066ba DE |
96 | static void reset_readchar (void); |
97 | static void reschedule (void); | |
bc3b5632 | 98 | |
fd500816 DJ |
99 | /* A cache entry for a successfully looked-up symbol. */ |
100 | struct sym_cache | |
101 | { | |
95954743 | 102 | char *name; |
fd500816 DJ |
103 | CORE_ADDR addr; |
104 | struct sym_cache *next; | |
105 | }; | |
106 | ||
c906108c | 107 | int remote_debug = 0; |
03863182 | 108 | struct ui_file *gdb_stdlog; |
c906108c | 109 | |
ec48365d PA |
110 | static gdb_fildes_t remote_desc = INVALID_DESCRIPTOR; |
111 | static gdb_fildes_t listen_desc = INVALID_DESCRIPTOR; | |
c906108c | 112 | |
0d62e5e8 DJ |
113 | /* FIXME headerize? */ |
114 | extern int using_threads; | |
115 | extern int debug_threads; | |
116 | ||
a6f3e723 SL |
117 | /* If true, then GDB has requested noack mode. */ |
118 | int noack_mode = 0; | |
119 | /* If true, then we tell GDB to use noack mode by default. */ | |
120 | int transport_is_reliable = 0; | |
121 | ||
0f48aa01 | 122 | #ifdef USE_WIN32API |
68070c10 PA |
123 | # define read(fd, buf, len) recv (fd, (char *) buf, len, 0) |
124 | # define write(fd, buf, len) send (fd, (char *) buf, len, 0) | |
0f48aa01 DJ |
125 | #endif |
126 | ||
8336d594 PA |
127 | int |
128 | gdb_connected (void) | |
129 | { | |
130 | return remote_desc != INVALID_DESCRIPTOR; | |
131 | } | |
132 | ||
133 | static void | |
134 | enable_async_notification (int fd) | |
135 | { | |
136 | #if defined(F_SETFL) && defined (FASYNC) | |
137 | int save_fcntl_flags; | |
138 | ||
139 | save_fcntl_flags = fcntl (fd, F_GETFL, 0); | |
140 | fcntl (fd, F_SETFL, save_fcntl_flags | FASYNC); | |
141 | #if defined (F_SETOWN) | |
142 | fcntl (fd, F_SETOWN, getpid ()); | |
143 | #endif | |
144 | #endif | |
145 | } | |
146 | ||
147 | static int | |
148 | handle_accept_event (int err, gdb_client_data client_data) | |
149 | { | |
150 | struct sockaddr_in sockaddr; | |
151 | socklen_t tmp; | |
152 | ||
153 | if (debug_threads) | |
154 | fprintf (stderr, "handling possible accept event\n"); | |
155 | ||
156 | tmp = sizeof (sockaddr); | |
157 | remote_desc = accept (listen_desc, (struct sockaddr *) &sockaddr, &tmp); | |
158 | if (remote_desc == -1) | |
159 | perror_with_name ("Accept failed"); | |
160 | ||
161 | /* Enable TCP keep alive process. */ | |
162 | tmp = 1; | |
163 | setsockopt (remote_desc, SOL_SOCKET, SO_KEEPALIVE, | |
164 | (char *) &tmp, sizeof (tmp)); | |
165 | ||
166 | /* Tell TCP not to delay small packets. This greatly speeds up | |
167 | interactive response. */ | |
168 | tmp = 1; | |
169 | setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY, | |
170 | (char *) &tmp, sizeof (tmp)); | |
171 | ||
172 | #ifndef USE_WIN32API | |
173 | close (listen_desc); /* No longer need this */ | |
174 | ||
175 | signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply | |
176 | exits when the remote side dies. */ | |
177 | #else | |
178 | closesocket (listen_desc); /* No longer need this */ | |
179 | #endif | |
180 | ||
181 | delete_file_handler (listen_desc); | |
182 | ||
183 | /* Convert IP address to string. */ | |
184 | fprintf (stderr, "Remote debugging from host %s\n", | |
185 | inet_ntoa (sockaddr.sin_addr)); | |
186 | ||
187 | enable_async_notification (remote_desc); | |
188 | ||
189 | /* Register the event loop handler. */ | |
190 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
191 | ||
192 | /* We have a new GDB connection now. If we were disconnected | |
193 | tracing, there's a window where the target could report a stop | |
194 | event to the event loop, and since we have a connection now, we'd | |
195 | try to send vStopped notifications to GDB. But, don't do that | |
196 | until GDB as selected all-stop/non-stop, and has queried the | |
197 | threads' status ('?'). */ | |
198 | target_async (0); | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
c906108c SS |
203 | /* Open a connection to a remote debugger. |
204 | NAME is the filename used for communication. */ | |
205 | ||
206 | void | |
fba45db2 | 207 | remote_open (char *name) |
c906108c | 208 | { |
8264bb58 DJ |
209 | char *port_str; |
210 | ||
211 | port_str = strchr (name, ':'); | |
212 | if (port_str == NULL) | |
c906108c | 213 | { |
b80864fb DJ |
214 | #ifdef USE_WIN32API |
215 | error ("Only <host>:<port> is supported on this platform."); | |
216 | #else | |
8264bb58 DJ |
217 | struct stat statbuf; |
218 | ||
219 | if (stat (name, &statbuf) == 0 | |
220 | && (S_ISCHR (statbuf.st_mode) || S_ISFIFO (statbuf.st_mode))) | |
221 | remote_desc = open (name, O_RDWR); | |
222 | else | |
223 | { | |
224 | errno = EINVAL; | |
225 | remote_desc = -1; | |
226 | } | |
227 | ||
c906108c SS |
228 | if (remote_desc < 0) |
229 | perror_with_name ("Could not open remote device"); | |
230 | ||
231 | #ifdef HAVE_TERMIOS | |
232 | { | |
233 | struct termios termios; | |
c5aa993b | 234 | tcgetattr (remote_desc, &termios); |
c906108c SS |
235 | |
236 | termios.c_iflag = 0; | |
237 | termios.c_oflag = 0; | |
238 | termios.c_lflag = 0; | |
c5aa993b | 239 | termios.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 240 | termios.c_cflag |= CLOCAL | CS8; |
d0608e50 | 241 | termios.c_cc[VMIN] = 1; |
c906108c SS |
242 | termios.c_cc[VTIME] = 0; |
243 | ||
c5aa993b | 244 | tcsetattr (remote_desc, TCSANOW, &termios); |
c906108c SS |
245 | } |
246 | #endif | |
247 | ||
248 | #ifdef HAVE_TERMIO | |
249 | { | |
250 | struct termio termio; | |
251 | ioctl (remote_desc, TCGETA, &termio); | |
252 | ||
253 | termio.c_iflag = 0; | |
254 | termio.c_oflag = 0; | |
255 | termio.c_lflag = 0; | |
c5aa993b | 256 | termio.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 257 | termio.c_cflag |= CLOCAL | CS8; |
d0608e50 | 258 | termio.c_cc[VMIN] = 1; |
c906108c SS |
259 | termio.c_cc[VTIME] = 0; |
260 | ||
261 | ioctl (remote_desc, TCSETA, &termio); | |
262 | } | |
263 | #endif | |
264 | ||
265 | #ifdef HAVE_SGTTY | |
266 | { | |
267 | struct sgttyb sg; | |
268 | ||
269 | ioctl (remote_desc, TIOCGETP, &sg); | |
270 | sg.sg_flags = RAW; | |
271 | ioctl (remote_desc, TIOCSETP, &sg); | |
272 | } | |
273 | #endif | |
274 | ||
e641a1ca | 275 | fprintf (stderr, "Remote debugging using %s\n", name); |
a6f3e723 SL |
276 | |
277 | transport_is_reliable = 0; | |
8336d594 PA |
278 | |
279 | enable_async_notification (remote_desc); | |
280 | ||
281 | /* Register the event loop handler. */ | |
282 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
283 | #endif /* USE_WIN32API */ | |
c906108c SS |
284 | } |
285 | else | |
286 | { | |
b80864fb DJ |
287 | #ifdef USE_WIN32API |
288 | static int winsock_initialized; | |
289 | #endif | |
c906108c SS |
290 | int port; |
291 | struct sockaddr_in sockaddr; | |
f450004a | 292 | socklen_t tmp; |
2d717e4f | 293 | char *port_end; |
c906108c | 294 | |
2d717e4f DJ |
295 | port = strtoul (port_str + 1, &port_end, 10); |
296 | if (port_str[1] == '\0' || *port_end != '\0') | |
297 | fatal ("Bad port argument: %s", name); | |
c906108c | 298 | |
b80864fb DJ |
299 | #ifdef USE_WIN32API |
300 | if (!winsock_initialized) | |
301 | { | |
302 | WSADATA wsad; | |
303 | ||
304 | WSAStartup (MAKEWORD (1, 0), &wsad); | |
305 | winsock_initialized = 1; | |
306 | } | |
307 | #endif | |
308 | ||
8336d594 | 309 | listen_desc = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP); |
363a6e9f | 310 | if (listen_desc == -1) |
c906108c SS |
311 | perror_with_name ("Can't open socket"); |
312 | ||
313 | /* Allow rapid reuse of this port. */ | |
314 | tmp = 1; | |
8336d594 | 315 | setsockopt (listen_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, |
c5aa993b | 316 | sizeof (tmp)); |
c906108c SS |
317 | |
318 | sockaddr.sin_family = PF_INET; | |
c5aa993b | 319 | sockaddr.sin_port = htons (port); |
c906108c SS |
320 | sockaddr.sin_addr.s_addr = INADDR_ANY; |
321 | ||
8336d594 PA |
322 | if (bind (listen_desc, (struct sockaddr *) &sockaddr, sizeof (sockaddr)) |
323 | || listen (listen_desc, 1)) | |
c906108c SS |
324 | perror_with_name ("Can't bind address"); |
325 | ||
6f8486da DJ |
326 | /* If port is zero, a random port will be selected, and the |
327 | fprintf below needs to know what port was selected. */ | |
328 | if (port == 0) | |
329 | { | |
330 | socklen_t len = sizeof (sockaddr); | |
493e2a69 MS |
331 | if (getsockname (listen_desc, |
332 | (struct sockaddr *) &sockaddr, &len) < 0 | |
6f8486da DJ |
333 | || len < sizeof (sockaddr)) |
334 | perror_with_name ("Can't determine port"); | |
335 | port = ntohs (sockaddr.sin_port); | |
336 | } | |
337 | ||
6910d122 | 338 | fprintf (stderr, "Listening on port %d\n", port); |
b80864fb | 339 | fflush (stderr); |
6910d122 | 340 | |
8336d594 PA |
341 | /* Register the event loop handler. */ |
342 | add_file_handler (listen_desc, handle_accept_event, NULL); | |
a6f3e723 SL |
343 | |
344 | transport_is_reliable = 1; | |
c906108c | 345 | } |
c906108c SS |
346 | } |
347 | ||
348 | void | |
fba45db2 | 349 | remote_close (void) |
c906108c | 350 | { |
bd99dc85 PA |
351 | delete_file_handler (remote_desc); |
352 | ||
b80864fb DJ |
353 | #ifdef USE_WIN32API |
354 | closesocket (remote_desc); | |
355 | #else | |
c906108c | 356 | close (remote_desc); |
b80864fb | 357 | #endif |
8336d594 | 358 | remote_desc = INVALID_DESCRIPTOR; |
24b066ba DE |
359 | |
360 | reset_readchar (); | |
c906108c SS |
361 | } |
362 | ||
363 | /* Convert hex digit A to a number. */ | |
364 | ||
365 | static int | |
fba45db2 | 366 | fromhex (int a) |
c906108c SS |
367 | { |
368 | if (a >= '0' && a <= '9') | |
369 | return a - '0'; | |
370 | else if (a >= 'a' && a <= 'f') | |
371 | return a - 'a' + 10; | |
372 | else | |
373 | error ("Reply contains invalid hex digit"); | |
0a30fbc4 | 374 | return 0; |
c906108c SS |
375 | } |
376 | ||
0fb4aa4b PA |
377 | #endif |
378 | ||
95954743 PA |
379 | static const char hexchars[] = "0123456789abcdef"; |
380 | ||
381 | static int | |
382 | ishex (int ch, int *val) | |
383 | { | |
384 | if ((ch >= 'a') && (ch <= 'f')) | |
385 | { | |
386 | *val = ch - 'a' + 10; | |
387 | return 1; | |
388 | } | |
389 | if ((ch >= 'A') && (ch <= 'F')) | |
390 | { | |
391 | *val = ch - 'A' + 10; | |
392 | return 1; | |
393 | } | |
394 | if ((ch >= '0') && (ch <= '9')) | |
395 | { | |
396 | *val = ch - '0'; | |
397 | return 1; | |
398 | } | |
399 | return 0; | |
400 | } | |
401 | ||
0fb4aa4b PA |
402 | #ifndef IN_PROCESS_AGENT |
403 | ||
ce3a066d DJ |
404 | int |
405 | unhexify (char *bin, const char *hex, int count) | |
406 | { | |
407 | int i; | |
408 | ||
409 | for (i = 0; i < count; i++) | |
410 | { | |
411 | if (hex[0] == 0 || hex[1] == 0) | |
1b3f6016 PA |
412 | { |
413 | /* Hex string is short, or of uneven length. | |
414 | Return the count that has been converted so far. */ | |
415 | return i; | |
416 | } | |
ce3a066d DJ |
417 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); |
418 | hex += 2; | |
419 | } | |
420 | return i; | |
421 | } | |
422 | ||
dae5f5cf | 423 | void |
2f2893d9 DJ |
424 | decode_address (CORE_ADDR *addrp, const char *start, int len) |
425 | { | |
426 | CORE_ADDR addr; | |
427 | char ch; | |
428 | int i; | |
429 | ||
430 | addr = 0; | |
431 | for (i = 0; i < len; i++) | |
432 | { | |
433 | ch = start[i]; | |
434 | addr = addr << 4; | |
435 | addr = addr | (fromhex (ch) & 0x0f); | |
436 | } | |
437 | *addrp = addr; | |
438 | } | |
439 | ||
89be2091 DJ |
440 | const char * |
441 | decode_address_to_semicolon (CORE_ADDR *addrp, const char *start) | |
442 | { | |
443 | const char *end; | |
444 | ||
445 | end = start; | |
446 | while (*end != '\0' && *end != ';') | |
447 | end++; | |
448 | ||
449 | decode_address (addrp, start, end - start); | |
450 | ||
451 | if (*end == ';') | |
452 | end++; | |
453 | return end; | |
454 | } | |
455 | ||
0fb4aa4b PA |
456 | #endif |
457 | ||
c906108c SS |
458 | /* Convert number NIB to a hex digit. */ |
459 | ||
460 | static int | |
fba45db2 | 461 | tohex (int nib) |
c906108c SS |
462 | { |
463 | if (nib < 10) | |
464 | return '0' + nib; | |
465 | else | |
466 | return 'a' + nib - 10; | |
467 | } | |
468 | ||
0fb4aa4b PA |
469 | #ifndef IN_PROCESS_AGENT |
470 | ||
ce3a066d DJ |
471 | int |
472 | hexify (char *hex, const char *bin, int count) | |
473 | { | |
474 | int i; | |
475 | ||
476 | /* May use a length, or a nul-terminated string as input. */ | |
477 | if (count == 0) | |
478 | count = strlen (bin); | |
479 | ||
480 | for (i = 0; i < count; i++) | |
481 | { | |
482 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
483 | *hex++ = tohex (*bin++ & 0xf); | |
484 | } | |
485 | *hex = 0; | |
486 | return i; | |
487 | } | |
488 | ||
01f9e8fa DJ |
489 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
490 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
491 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
492 | (which may be more than *OUT_LEN due to escape characters). The | |
493 | total number of bytes in the output buffer will be at most | |
494 | OUT_MAXLEN. */ | |
495 | ||
496 | int | |
497 | remote_escape_output (const gdb_byte *buffer, int len, | |
498 | gdb_byte *out_buf, int *out_len, | |
499 | int out_maxlen) | |
500 | { | |
501 | int input_index, output_index; | |
502 | ||
503 | output_index = 0; | |
504 | for (input_index = 0; input_index < len; input_index++) | |
505 | { | |
506 | gdb_byte b = buffer[input_index]; | |
507 | ||
508 | if (b == '$' || b == '#' || b == '}' || b == '*') | |
509 | { | |
510 | /* These must be escaped. */ | |
511 | if (output_index + 2 > out_maxlen) | |
512 | break; | |
513 | out_buf[output_index++] = '}'; | |
514 | out_buf[output_index++] = b ^ 0x20; | |
515 | } | |
516 | else | |
517 | { | |
518 | if (output_index + 1 > out_maxlen) | |
519 | break; | |
520 | out_buf[output_index++] = b; | |
521 | } | |
522 | } | |
523 | ||
524 | *out_len = input_index; | |
525 | return output_index; | |
526 | } | |
527 | ||
528 | /* Convert BUFFER, escaped data LEN bytes long, into binary data | |
529 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
530 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
531 | ||
532 | This function reverses remote_escape_output. It allows more | |
533 | escaped characters than that function does, in particular because | |
534 | '*' must be escaped to avoid the run-length encoding processing | |
535 | in reading packets. */ | |
536 | ||
537 | static int | |
538 | remote_unescape_input (const gdb_byte *buffer, int len, | |
539 | gdb_byte *out_buf, int out_maxlen) | |
540 | { | |
541 | int input_index, output_index; | |
542 | int escaped; | |
543 | ||
544 | output_index = 0; | |
545 | escaped = 0; | |
546 | for (input_index = 0; input_index < len; input_index++) | |
547 | { | |
548 | gdb_byte b = buffer[input_index]; | |
549 | ||
550 | if (output_index + 1 > out_maxlen) | |
551 | error ("Received too much data from the target."); | |
552 | ||
553 | if (escaped) | |
554 | { | |
555 | out_buf[output_index++] = b ^ 0x20; | |
556 | escaped = 0; | |
557 | } | |
558 | else if (b == '}') | |
559 | escaped = 1; | |
560 | else | |
561 | out_buf[output_index++] = b; | |
562 | } | |
563 | ||
564 | if (escaped) | |
565 | error ("Unmatched escape character in target response."); | |
566 | ||
567 | return output_index; | |
568 | } | |
569 | ||
5ffff7c1 DJ |
570 | /* Look for a sequence of characters which can be run-length encoded. |
571 | If there are any, update *CSUM and *P. Otherwise, output the | |
572 | single character. Return the number of characters consumed. */ | |
573 | ||
574 | static int | |
575 | try_rle (char *buf, int remaining, unsigned char *csum, char **p) | |
576 | { | |
577 | int n; | |
578 | ||
579 | /* Always output the character. */ | |
580 | *csum += buf[0]; | |
581 | *(*p)++ = buf[0]; | |
582 | ||
583 | /* Don't go past '~'. */ | |
584 | if (remaining > 97) | |
585 | remaining = 97; | |
586 | ||
587 | for (n = 1; n < remaining; n++) | |
588 | if (buf[n] != buf[0]) | |
589 | break; | |
590 | ||
591 | /* N is the index of the first character not the same as buf[0]. | |
592 | buf[0] is counted twice, so by decrementing N, we get the number | |
593 | of characters the RLE sequence will replace. */ | |
594 | n--; | |
595 | ||
596 | if (n < 3) | |
597 | return 1; | |
598 | ||
599 | /* Skip the frame characters. The manual says to skip '+' and '-' | |
600 | also, but there's no reason to. Unfortunately these two unusable | |
601 | characters double the encoded length of a four byte zero | |
602 | value. */ | |
603 | while (n + 29 == '$' || n + 29 == '#') | |
604 | n--; | |
605 | ||
606 | *csum += '*'; | |
607 | *(*p)++ = '*'; | |
608 | *csum += n + 29; | |
609 | *(*p)++ = n + 29; | |
610 | ||
611 | return n + 1; | |
612 | } | |
613 | ||
0fb4aa4b PA |
614 | #endif |
615 | ||
95954743 PA |
616 | char * |
617 | unpack_varlen_hex (char *buff, /* packet to parse */ | |
618 | ULONGEST *result) | |
619 | { | |
620 | int nibble; | |
621 | ULONGEST retval = 0; | |
622 | ||
623 | while (ishex (*buff, &nibble)) | |
624 | { | |
625 | buff++; | |
626 | retval = retval << 4; | |
627 | retval |= nibble & 0x0f; | |
628 | } | |
629 | *result = retval; | |
630 | return buff; | |
631 | } | |
632 | ||
0fb4aa4b PA |
633 | #ifndef IN_PROCESS_AGENT |
634 | ||
95954743 PA |
635 | /* Write a PTID to BUF. Returns BUF+CHARACTERS_WRITTEN. */ |
636 | ||
637 | char * | |
638 | write_ptid (char *buf, ptid_t ptid) | |
639 | { | |
640 | int pid, tid; | |
641 | ||
642 | if (multi_process) | |
643 | { | |
644 | pid = ptid_get_pid (ptid); | |
645 | if (pid < 0) | |
646 | buf += sprintf (buf, "p-%x.", -pid); | |
647 | else | |
648 | buf += sprintf (buf, "p%x.", pid); | |
649 | } | |
650 | tid = ptid_get_lwp (ptid); | |
651 | if (tid < 0) | |
652 | buf += sprintf (buf, "-%x", -tid); | |
653 | else | |
654 | buf += sprintf (buf, "%x", tid); | |
655 | ||
656 | return buf; | |
657 | } | |
658 | ||
659 | ULONGEST | |
660 | hex_or_minus_one (char *buf, char **obuf) | |
661 | { | |
662 | ULONGEST ret; | |
663 | ||
664 | if (strncmp (buf, "-1", 2) == 0) | |
665 | { | |
666 | ret = (ULONGEST) -1; | |
667 | buf += 2; | |
668 | } | |
669 | else | |
670 | buf = unpack_varlen_hex (buf, &ret); | |
671 | ||
672 | if (obuf) | |
673 | *obuf = buf; | |
674 | ||
675 | return ret; | |
676 | } | |
677 | ||
678 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
679 | passed the last parsed char. Returns null_ptid on error. */ | |
680 | ptid_t | |
681 | read_ptid (char *buf, char **obuf) | |
682 | { | |
683 | char *p = buf; | |
684 | char *pp; | |
685 | ULONGEST pid = 0, tid = 0; | |
686 | ||
687 | if (*p == 'p') | |
688 | { | |
689 | /* Multi-process ptid. */ | |
690 | pp = unpack_varlen_hex (p + 1, &pid); | |
691 | if (*pp != '.') | |
692 | error ("invalid remote ptid: %s\n", p); | |
693 | ||
694 | p = pp + 1; | |
695 | ||
696 | tid = hex_or_minus_one (p, &pp); | |
697 | ||
698 | if (obuf) | |
699 | *obuf = pp; | |
700 | return ptid_build (pid, tid, 0); | |
701 | } | |
702 | ||
703 | /* No multi-process. Just a tid. */ | |
704 | tid = hex_or_minus_one (p, &pp); | |
705 | ||
706 | /* Since the stub is not sending a process id, then default to | |
707 | what's in the current inferior. */ | |
708 | pid = ptid_get_pid (((struct inferior_list_entry *) current_inferior)->id); | |
709 | ||
710 | if (obuf) | |
711 | *obuf = pp; | |
712 | return ptid_build (pid, tid, 0); | |
713 | } | |
714 | ||
c906108c | 715 | /* Send a packet to the remote machine, with error checking. |
01f9e8fa DJ |
716 | The data of the packet is in BUF, and the length of the |
717 | packet is in CNT. Returns >= 0 on success, -1 otherwise. */ | |
c906108c | 718 | |
bd99dc85 PA |
719 | static int |
720 | putpkt_binary_1 (char *buf, int cnt, int is_notif) | |
c906108c SS |
721 | { |
722 | int i; | |
723 | unsigned char csum = 0; | |
0a30fbc4 | 724 | char *buf2; |
c906108c | 725 | char *p; |
bc3b5632 | 726 | int cc; |
c906108c | 727 | |
e6edda56 | 728 | buf2 = xmalloc (strlen ("$") + cnt + strlen ("#nn") + 1); |
0a30fbc4 | 729 | |
c906108c SS |
730 | /* Copy the packet into buffer BUF2, encapsulating it |
731 | and giving it a checksum. */ | |
732 | ||
733 | p = buf2; | |
bd99dc85 PA |
734 | if (is_notif) |
735 | *p++ = '%'; | |
736 | else | |
737 | *p++ = '$'; | |
c906108c | 738 | |
5ffff7c1 DJ |
739 | for (i = 0; i < cnt;) |
740 | i += try_rle (buf + i, cnt - i, &csum, &p); | |
741 | ||
c906108c SS |
742 | *p++ = '#'; |
743 | *p++ = tohex ((csum >> 4) & 0xf); | |
744 | *p++ = tohex (csum & 0xf); | |
745 | ||
746 | *p = '\0'; | |
747 | ||
748 | /* Send it over and over until we get a positive ack. */ | |
749 | ||
750 | do | |
751 | { | |
0f48aa01 | 752 | if (write (remote_desc, buf2, p - buf2) != p - buf2) |
c906108c SS |
753 | { |
754 | perror ("putpkt(write)"); | |
f88c79e6 | 755 | free (buf2); |
c906108c SS |
756 | return -1; |
757 | } | |
758 | ||
bd99dc85 | 759 | if (noack_mode || is_notif) |
a6f3e723 SL |
760 | { |
761 | /* Don't expect an ack then. */ | |
762 | if (remote_debug) | |
763 | { | |
bd99dc85 PA |
764 | if (is_notif) |
765 | fprintf (stderr, "putpkt (\"%s\"); [notif]\n", buf2); | |
766 | else | |
767 | fprintf (stderr, "putpkt (\"%s\"); [noack mode]\n", buf2); | |
a6f3e723 SL |
768 | fflush (stderr); |
769 | } | |
770 | break; | |
771 | } | |
772 | ||
c906108c | 773 | if (remote_debug) |
0d62e5e8 DJ |
774 | { |
775 | fprintf (stderr, "putpkt (\"%s\"); [looking for ack]\n", buf2); | |
776 | fflush (stderr); | |
777 | } | |
0d62e5e8 | 778 | |
bc3b5632 | 779 | cc = readchar (); |
c906108c | 780 | |
bc3b5632 DE |
781 | if (cc < 0) |
782 | { | |
0a30fbc4 | 783 | free (buf2); |
c906108c SS |
784 | return -1; |
785 | } | |
0d62e5e8 | 786 | |
bc3b5632 DE |
787 | if (remote_debug) |
788 | { | |
789 | fprintf (stderr, "[received '%c' (0x%x)]\n", cc, cc); | |
790 | fflush (stderr); | |
791 | } | |
792 | ||
0d62e5e8 | 793 | /* Check for an input interrupt while we're here. */ |
bc3b5632 | 794 | if (cc == '\003' && current_inferior != NULL) |
ef57601b | 795 | (*the_target->request_interrupt) (); |
c906108c | 796 | } |
bc3b5632 | 797 | while (cc != '+'); |
c906108c | 798 | |
0a30fbc4 | 799 | free (buf2); |
c906108c SS |
800 | return 1; /* Success! */ |
801 | } | |
802 | ||
bd99dc85 PA |
803 | int |
804 | putpkt_binary (char *buf, int cnt) | |
805 | { | |
806 | return putpkt_binary_1 (buf, cnt, 0); | |
807 | } | |
808 | ||
01f9e8fa DJ |
809 | /* Send a packet to the remote machine, with error checking. The data |
810 | of the packet is in BUF, and the packet should be a NUL-terminated | |
811 | string. Returns >= 0 on success, -1 otherwise. */ | |
812 | ||
813 | int | |
814 | putpkt (char *buf) | |
815 | { | |
816 | return putpkt_binary (buf, strlen (buf)); | |
817 | } | |
818 | ||
bd99dc85 PA |
819 | int |
820 | putpkt_notif (char *buf) | |
821 | { | |
822 | return putpkt_binary_1 (buf, strlen (buf), 1); | |
823 | } | |
824 | ||
c906108c SS |
825 | /* Come here when we get an input interrupt from the remote side. This |
826 | interrupt should only be active while we are waiting for the child to do | |
bc3b5632 DE |
827 | something. Thus this assumes readchar:bufcnt is 0. |
828 | About the only thing that should come through is a ^C, which | |
ef57601b | 829 | will cause us to request child interruption. */ |
c906108c SS |
830 | |
831 | static void | |
0a30fbc4 | 832 | input_interrupt (int unused) |
c906108c | 833 | { |
cf30a8e1 C |
834 | fd_set readset; |
835 | struct timeval immediate = { 0, 0 }; | |
c906108c | 836 | |
cf30a8e1 C |
837 | /* Protect against spurious interrupts. This has been observed to |
838 | be a problem under NetBSD 1.4 and 1.5. */ | |
c906108c | 839 | |
cf30a8e1 C |
840 | FD_ZERO (&readset); |
841 | FD_SET (remote_desc, &readset); | |
842 | if (select (remote_desc + 1, &readset, 0, 0, &immediate) > 0) | |
c906108c | 843 | { |
cf30a8e1 | 844 | int cc; |
fd500816 | 845 | char c = 0; |
7390519e | 846 | |
0f48aa01 | 847 | cc = read (remote_desc, &c, 1); |
c906108c | 848 | |
2d717e4f | 849 | if (cc != 1 || c != '\003' || current_inferior == NULL) |
cf30a8e1 | 850 | { |
fd500816 DJ |
851 | fprintf (stderr, "input_interrupt, count = %d c = %d ('%c')\n", |
852 | cc, c, c); | |
cf30a8e1 C |
853 | return; |
854 | } | |
7390519e | 855 | |
ef57601b | 856 | (*the_target->request_interrupt) (); |
cf30a8e1 | 857 | } |
c906108c | 858 | } |
7390519e PA |
859 | |
860 | /* Check if the remote side sent us an interrupt request (^C). */ | |
861 | void | |
862 | check_remote_input_interrupt_request (void) | |
863 | { | |
864 | /* This function may be called before establishing communications, | |
865 | therefore we need to validate the remote descriptor. */ | |
866 | ||
867 | if (remote_desc == INVALID_DESCRIPTOR) | |
868 | return; | |
869 | ||
870 | input_interrupt (0); | |
871 | } | |
b80864fb DJ |
872 | |
873 | /* Asynchronous I/O support. SIGIO must be enabled when waiting, in order to | |
874 | accept Control-C from the client, and must be disabled when talking to | |
875 | the client. */ | |
c906108c | 876 | |
a20d5e98 | 877 | static void |
62ea82f5 DJ |
878 | unblock_async_io (void) |
879 | { | |
b80864fb | 880 | #ifndef USE_WIN32API |
62ea82f5 | 881 | sigset_t sigio_set; |
a20d5e98 | 882 | |
62ea82f5 DJ |
883 | sigemptyset (&sigio_set); |
884 | sigaddset (&sigio_set, SIGIO); | |
885 | sigprocmask (SIG_UNBLOCK, &sigio_set, NULL); | |
b80864fb | 886 | #endif |
62ea82f5 DJ |
887 | } |
888 | ||
ac8c974e AR |
889 | #ifdef __QNX__ |
890 | static void | |
891 | nto_comctrl (int enable) | |
892 | { | |
893 | struct sigevent event; | |
894 | ||
895 | if (enable) | |
896 | { | |
897 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
898 | event.sigev_signo = SIGIO; | |
899 | event.sigev_code = 0; | |
900 | event.sigev_value.sival_ptr = NULL; | |
901 | event.sigev_priority = -1; | |
902 | ionotify (remote_desc, _NOTIFY_ACTION_POLLARM, _NOTIFY_COND_INPUT, | |
903 | &event); | |
904 | } | |
905 | else | |
906 | ionotify (remote_desc, _NOTIFY_ACTION_POLL, _NOTIFY_COND_INPUT, NULL); | |
907 | } | |
908 | #endif /* __QNX__ */ | |
909 | ||
910 | ||
fd500816 DJ |
911 | /* Current state of asynchronous I/O. */ |
912 | static int async_io_enabled; | |
913 | ||
914 | /* Enable asynchronous I/O. */ | |
c906108c | 915 | void |
fba45db2 | 916 | enable_async_io (void) |
c906108c | 917 | { |
fd500816 DJ |
918 | if (async_io_enabled) |
919 | return; | |
920 | ||
b80864fb | 921 | #ifndef USE_WIN32API |
c906108c | 922 | signal (SIGIO, input_interrupt); |
b80864fb | 923 | #endif |
fd500816 | 924 | async_io_enabled = 1; |
ac8c974e AR |
925 | #ifdef __QNX__ |
926 | nto_comctrl (1); | |
927 | #endif /* __QNX__ */ | |
c906108c SS |
928 | } |
929 | ||
fd500816 | 930 | /* Disable asynchronous I/O. */ |
c906108c | 931 | void |
fba45db2 | 932 | disable_async_io (void) |
c906108c | 933 | { |
fd500816 DJ |
934 | if (!async_io_enabled) |
935 | return; | |
936 | ||
b80864fb | 937 | #ifndef USE_WIN32API |
c906108c | 938 | signal (SIGIO, SIG_IGN); |
b80864fb | 939 | #endif |
fd500816 | 940 | async_io_enabled = 0; |
ac8c974e AR |
941 | #ifdef __QNX__ |
942 | nto_comctrl (0); | |
943 | #endif /* __QNX__ */ | |
944 | ||
c906108c SS |
945 | } |
946 | ||
a20d5e98 DJ |
947 | void |
948 | initialize_async_io (void) | |
949 | { | |
950 | /* Make sure that async I/O starts disabled. */ | |
951 | async_io_enabled = 1; | |
952 | disable_async_io (); | |
953 | ||
954 | /* Make sure the signal is unblocked. */ | |
955 | unblock_async_io (); | |
956 | } | |
957 | ||
24b066ba DE |
958 | /* Internal buffer used by readchar. |
959 | These are global to readchar because reschedule_remote needs to be | |
960 | able to tell whether the buffer is empty. */ | |
961 | ||
962 | static unsigned char readchar_buf[BUFSIZ]; | |
963 | static int readchar_bufcnt = 0; | |
964 | static unsigned char *readchar_bufp; | |
965 | ||
c906108c SS |
966 | /* Returns next char from remote GDB. -1 if error. */ |
967 | ||
968 | static int | |
fba45db2 | 969 | readchar (void) |
c906108c | 970 | { |
24b066ba | 971 | int ch; |
c906108c | 972 | |
24b066ba DE |
973 | if (readchar_bufcnt == 0) |
974 | { | |
493e2a69 MS |
975 | readchar_bufcnt = read (remote_desc, readchar_buf, |
976 | sizeof (readchar_buf)); | |
c906108c | 977 | |
24b066ba DE |
978 | if (readchar_bufcnt <= 0) |
979 | { | |
980 | if (readchar_bufcnt == 0) | |
981 | fprintf (stderr, "readchar: Got EOF\n"); | |
982 | else | |
983 | perror ("readchar"); | |
c906108c | 984 | |
24b066ba DE |
985 | return -1; |
986 | } | |
c906108c | 987 | |
24b066ba | 988 | readchar_bufp = readchar_buf; |
c906108c SS |
989 | } |
990 | ||
24b066ba DE |
991 | readchar_bufcnt--; |
992 | ch = *readchar_bufp++; | |
993 | reschedule (); | |
994 | return ch; | |
995 | } | |
996 | ||
997 | /* Reset the readchar state machine. */ | |
998 | ||
999 | static void | |
1000 | reset_readchar (void) | |
1001 | { | |
1002 | readchar_bufcnt = 0; | |
1003 | if (readchar_callback != NOT_SCHEDULED) | |
1004 | { | |
1005 | delete_callback_event (readchar_callback); | |
1006 | readchar_callback = NOT_SCHEDULED; | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | /* Process remaining data in readchar_buf. */ | |
1011 | ||
1012 | static int | |
1013 | process_remaining (void *context) | |
1014 | { | |
1015 | int res; | |
1016 | ||
1017 | /* This is a one-shot event. */ | |
1018 | readchar_callback = NOT_SCHEDULED; | |
1019 | ||
1020 | if (readchar_bufcnt > 0) | |
1021 | res = handle_serial_event (0, NULL); | |
1022 | else | |
1023 | res = 0; | |
1024 | ||
1025 | return res; | |
1026 | } | |
1027 | ||
1028 | /* If there is still data in the buffer, queue another event to process it, | |
1029 | we can't sleep in select yet. */ | |
1030 | ||
1031 | static void | |
1032 | reschedule (void) | |
1033 | { | |
1034 | if (readchar_bufcnt > 0 && readchar_callback == NOT_SCHEDULED) | |
1035 | readchar_callback = append_callback_event (process_remaining, NULL); | |
c906108c SS |
1036 | } |
1037 | ||
1038 | /* Read a packet from the remote machine, with error checking, | |
1039 | and store it in BUF. Returns length of packet, or negative if error. */ | |
1040 | ||
1041 | int | |
fba45db2 | 1042 | getpkt (char *buf) |
c906108c SS |
1043 | { |
1044 | char *bp; | |
1045 | unsigned char csum, c1, c2; | |
1046 | int c; | |
1047 | ||
1048 | while (1) | |
1049 | { | |
1050 | csum = 0; | |
1051 | ||
1052 | while (1) | |
1053 | { | |
1054 | c = readchar (); | |
1055 | if (c == '$') | |
1056 | break; | |
1057 | if (remote_debug) | |
0d62e5e8 DJ |
1058 | { |
1059 | fprintf (stderr, "[getpkt: discarding char '%c']\n", c); | |
1060 | fflush (stderr); | |
1061 | } | |
1062 | ||
c906108c SS |
1063 | if (c < 0) |
1064 | return -1; | |
1065 | } | |
1066 | ||
1067 | bp = buf; | |
1068 | while (1) | |
1069 | { | |
1070 | c = readchar (); | |
1071 | if (c < 0) | |
1072 | return -1; | |
1073 | if (c == '#') | |
1074 | break; | |
1075 | *bp++ = c; | |
1076 | csum += c; | |
1077 | } | |
1078 | *bp = 0; | |
1079 | ||
1080 | c1 = fromhex (readchar ()); | |
1081 | c2 = fromhex (readchar ()); | |
c5aa993b | 1082 | |
c906108c SS |
1083 | if (csum == (c1 << 4) + c2) |
1084 | break; | |
1085 | ||
a6f3e723 SL |
1086 | if (noack_mode) |
1087 | { | |
493e2a69 MS |
1088 | fprintf (stderr, |
1089 | "Bad checksum, sentsum=0x%x, csum=0x%x, " | |
1090 | "buf=%s [no-ack-mode, Bad medium?]\n", | |
a6f3e723 SL |
1091 | (c1 << 4) + c2, csum, buf); |
1092 | /* Not much we can do, GDB wasn't expecting an ack/nac. */ | |
1093 | break; | |
1094 | } | |
1095 | ||
c906108c SS |
1096 | fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n", |
1097 | (c1 << 4) + c2, csum, buf); | |
e581f2b4 PA |
1098 | if (write (remote_desc, "-", 1) != 1) |
1099 | return -1; | |
c906108c SS |
1100 | } |
1101 | ||
a6f3e723 | 1102 | if (!noack_mode) |
0d62e5e8 | 1103 | { |
a6f3e723 SL |
1104 | if (remote_debug) |
1105 | { | |
1106 | fprintf (stderr, "getpkt (\"%s\"); [sending ack] \n", buf); | |
1107 | fflush (stderr); | |
1108 | } | |
c906108c | 1109 | |
e581f2b4 PA |
1110 | if (write (remote_desc, "+", 1) != 1) |
1111 | return -1; | |
c906108c | 1112 | |
a6f3e723 SL |
1113 | if (remote_debug) |
1114 | { | |
1115 | fprintf (stderr, "[sent ack]\n"); | |
1116 | fflush (stderr); | |
1117 | } | |
0d62e5e8 | 1118 | } |
86b1f9c5 PM |
1119 | else |
1120 | { | |
1121 | if (remote_debug) | |
1122 | { | |
1123 | fprintf (stderr, "getpkt (\"%s\"); [no ack sent] \n", buf); | |
1124 | fflush (stderr); | |
1125 | } | |
1126 | } | |
0d62e5e8 | 1127 | |
c906108c SS |
1128 | return bp - buf; |
1129 | } | |
1130 | ||
1131 | void | |
fba45db2 | 1132 | write_ok (char *buf) |
c906108c SS |
1133 | { |
1134 | buf[0] = 'O'; | |
1135 | buf[1] = 'K'; | |
1136 | buf[2] = '\0'; | |
1137 | } | |
1138 | ||
1139 | void | |
fba45db2 | 1140 | write_enn (char *buf) |
c906108c | 1141 | { |
c89dc5d4 | 1142 | /* Some day, we should define the meanings of the error codes... */ |
c906108c | 1143 | buf[0] = 'E'; |
c89dc5d4 DJ |
1144 | buf[1] = '0'; |
1145 | buf[2] = '1'; | |
c906108c SS |
1146 | buf[3] = '\0'; |
1147 | } | |
1148 | ||
0fb4aa4b PA |
1149 | #endif |
1150 | ||
c906108c | 1151 | void |
fa593d66 | 1152 | convert_int_to_ascii (const unsigned char *from, char *to, int n) |
c906108c SS |
1153 | { |
1154 | int nib; | |
f450004a | 1155 | int ch; |
c906108c SS |
1156 | while (n--) |
1157 | { | |
1158 | ch = *from++; | |
1159 | nib = ((ch & 0xf0) >> 4) & 0x0f; | |
1160 | *to++ = tohex (nib); | |
1161 | nib = ch & 0x0f; | |
1162 | *to++ = tohex (nib); | |
1163 | } | |
1164 | *to++ = 0; | |
1165 | } | |
1166 | ||
0fb4aa4b | 1167 | #ifndef IN_PROCESS_AGENT |
c906108c SS |
1168 | |
1169 | void | |
fa593d66 | 1170 | convert_ascii_to_int (const char *from, unsigned char *to, int n) |
c906108c SS |
1171 | { |
1172 | int nib1, nib2; | |
1173 | while (n--) | |
1174 | { | |
1175 | nib1 = fromhex (*from++); | |
1176 | nib2 = fromhex (*from++); | |
1177 | *to++ = (((nib1 & 0x0f) << 4) & 0xf0) | (nib2 & 0x0f); | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | static char * | |
442ea881 | 1182 | outreg (struct regcache *regcache, int regno, char *buf) |
c906108c | 1183 | { |
5c44784c JM |
1184 | if ((regno >> 12) != 0) |
1185 | *buf++ = tohex ((regno >> 12) & 0xf); | |
1186 | if ((regno >> 8) != 0) | |
1187 | *buf++ = tohex ((regno >> 8) & 0xf); | |
1188 | *buf++ = tohex ((regno >> 4) & 0xf); | |
c906108c SS |
1189 | *buf++ = tohex (regno & 0xf); |
1190 | *buf++ = ':'; | |
442ea881 | 1191 | collect_register_as_string (regcache, regno, buf); |
0d62e5e8 | 1192 | buf += 2 * register_size (regno); |
c906108c SS |
1193 | *buf++ = ';'; |
1194 | ||
1195 | return buf; | |
1196 | } | |
1197 | ||
0d62e5e8 DJ |
1198 | void |
1199 | new_thread_notify (int id) | |
1200 | { | |
1201 | char own_buf[256]; | |
1202 | ||
1203 | /* The `n' response is not yet part of the remote protocol. Do nothing. */ | |
1204 | if (1) | |
1205 | return; | |
1206 | ||
1207 | if (server_waiting == 0) | |
1208 | return; | |
1209 | ||
1210 | sprintf (own_buf, "n%x", id); | |
1211 | disable_async_io (); | |
1212 | putpkt (own_buf); | |
1213 | enable_async_io (); | |
1214 | } | |
1215 | ||
1216 | void | |
1217 | dead_thread_notify (int id) | |
1218 | { | |
1219 | char own_buf[256]; | |
1220 | ||
1221 | /* The `x' response is not yet part of the remote protocol. Do nothing. */ | |
1222 | if (1) | |
1223 | return; | |
1224 | ||
1225 | sprintf (own_buf, "x%x", id); | |
1226 | disable_async_io (); | |
1227 | putpkt (own_buf); | |
1228 | enable_async_io (); | |
1229 | } | |
1230 | ||
c906108c | 1231 | void |
95954743 | 1232 | prepare_resume_reply (char *buf, ptid_t ptid, |
5b1c542e | 1233 | struct target_waitstatus *status) |
c906108c | 1234 | { |
5b1c542e | 1235 | if (debug_threads) |
95954743 PA |
1236 | fprintf (stderr, "Writing resume reply for %s:%d\n\n", |
1237 | target_pid_to_str (ptid), status->kind); | |
c906108c | 1238 | |
5b1c542e | 1239 | switch (status->kind) |
c906108c | 1240 | { |
5b1c542e PA |
1241 | case TARGET_WAITKIND_STOPPED: |
1242 | { | |
1243 | struct thread_info *saved_inferior; | |
1244 | const char **regp; | |
442ea881 | 1245 | struct regcache *regcache; |
e013ee27 | 1246 | |
5b1c542e PA |
1247 | sprintf (buf, "T%02x", status->value.sig); |
1248 | buf += strlen (buf); | |
e013ee27 | 1249 | |
5b1c542e | 1250 | regp = gdbserver_expedite_regs; |
e013ee27 | 1251 | |
5b1c542e | 1252 | saved_inferior = current_inferior; |
e013ee27 | 1253 | |
e09875d4 | 1254 | current_inferior = find_thread_ptid (ptid); |
e013ee27 | 1255 | |
442ea881 PA |
1256 | regcache = get_thread_regcache (current_inferior, 1); |
1257 | ||
5b1c542e PA |
1258 | if (the_target->stopped_by_watchpoint != NULL |
1259 | && (*the_target->stopped_by_watchpoint) ()) | |
1260 | { | |
1261 | CORE_ADDR addr; | |
1262 | int i; | |
c906108c | 1263 | |
5b1c542e PA |
1264 | strncpy (buf, "watch:", 6); |
1265 | buf += 6; | |
0d62e5e8 | 1266 | |
5b1c542e | 1267 | addr = (*the_target->stopped_data_address) (); |
255e7678 | 1268 | |
5b1c542e PA |
1269 | /* Convert each byte of the address into two hexadecimal |
1270 | chars. Note that we take sizeof (void *) instead of | |
1271 | sizeof (addr); this is to avoid sending a 64-bit | |
1272 | address to a 32-bit GDB. */ | |
1273 | for (i = sizeof (void *) * 2; i > 0; i--) | |
1274 | *buf++ = tohex ((addr >> (i - 1) * 4) & 0xf); | |
1275 | *buf++ = ';'; | |
1276 | } | |
1277 | ||
1278 | while (*regp) | |
1279 | { | |
442ea881 | 1280 | buf = outreg (regcache, find_regno (*regp), buf); |
5b1c542e PA |
1281 | regp ++; |
1282 | } | |
5472f405 | 1283 | *buf = '\0'; |
5b1c542e PA |
1284 | |
1285 | /* Formerly, if the debugger had not used any thread features | |
1286 | we would not burden it with a thread status response. This | |
1287 | was for the benefit of GDB 4.13 and older. However, in | |
1288 | recent GDB versions the check (``if (cont_thread != 0)'') | |
1289 | does not have the desired effect because of sillyness in | |
1290 | the way that the remote protocol handles specifying a | |
1291 | thread. Since thread support relies on qSymbol support | |
1292 | anyway, assume GDB can handle threads. */ | |
1293 | ||
1294 | if (using_threads && !disable_packet_Tthread) | |
1295 | { | |
1296 | /* This if (1) ought to be unnecessary. But remote_wait | |
1297 | in GDB will claim this event belongs to inferior_ptid | |
1298 | if we do not specify a thread, and there's no way for | |
1299 | gdbserver to know what inferior_ptid is. */ | |
95954743 | 1300 | if (1 || !ptid_equal (general_thread, ptid)) |
5b1c542e | 1301 | { |
dc146f7c | 1302 | int core = -1; |
bd99dc85 PA |
1303 | /* In non-stop, don't change the general thread behind |
1304 | GDB's back. */ | |
1305 | if (!non_stop) | |
1306 | general_thread = ptid; | |
95954743 PA |
1307 | sprintf (buf, "thread:"); |
1308 | buf += strlen (buf); | |
1309 | buf = write_ptid (buf, ptid); | |
1310 | strcat (buf, ";"); | |
5b1c542e | 1311 | buf += strlen (buf); |
dc146f7c VP |
1312 | |
1313 | if (the_target->core_of_thread) | |
1314 | core = (*the_target->core_of_thread) (ptid); | |
1315 | if (core != -1) | |
1316 | { | |
1317 | sprintf (buf, "core:"); | |
1318 | buf += strlen (buf); | |
1319 | sprintf (buf, "%x", core); | |
1320 | strcat (buf, ";"); | |
1321 | buf += strlen (buf); | |
1322 | } | |
5b1c542e PA |
1323 | } |
1324 | } | |
1325 | ||
1326 | if (dlls_changed) | |
1327 | { | |
1328 | strcpy (buf, "library:;"); | |
1329 | buf += strlen (buf); | |
1330 | dlls_changed = 0; | |
1331 | } | |
1332 | ||
1333 | current_inferior = saved_inferior; | |
1334 | } | |
1335 | break; | |
1336 | case TARGET_WAITKIND_EXITED: | |
95954743 PA |
1337 | if (multi_process) |
1338 | sprintf (buf, "W%x;process:%x", | |
1339 | status->value.integer, ptid_get_pid (ptid)); | |
1340 | else | |
1341 | sprintf (buf, "W%02x", status->value.integer); | |
5b1c542e PA |
1342 | break; |
1343 | case TARGET_WAITKIND_SIGNALLED: | |
95954743 PA |
1344 | if (multi_process) |
1345 | sprintf (buf, "X%x;process:%x", | |
1346 | status->value.sig, ptid_get_pid (ptid)); | |
1347 | else | |
1348 | sprintf (buf, "X%02x", status->value.sig); | |
5b1c542e PA |
1349 | break; |
1350 | default: | |
1351 | error ("unhandled waitkind"); | |
1352 | break; | |
c906108c | 1353 | } |
c906108c SS |
1354 | } |
1355 | ||
1356 | void | |
fba45db2 | 1357 | decode_m_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr) |
c906108c SS |
1358 | { |
1359 | int i = 0, j = 0; | |
1360 | char ch; | |
1361 | *mem_addr_ptr = *len_ptr = 0; | |
1362 | ||
1363 | while ((ch = from[i++]) != ',') | |
1364 | { | |
1365 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1366 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1367 | } | |
1368 | ||
1369 | for (j = 0; j < 4; j++) | |
1370 | { | |
1371 | if ((ch = from[i++]) == 0) | |
1372 | break; | |
1373 | *len_ptr = *len_ptr << 4; | |
1374 | *len_ptr |= fromhex (ch) & 0x0f; | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | void | |
fba45db2 | 1379 | decode_M_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr, |
fa593d66 | 1380 | unsigned char **to_p) |
c906108c SS |
1381 | { |
1382 | int i = 0; | |
1383 | char ch; | |
1384 | *mem_addr_ptr = *len_ptr = 0; | |
1385 | ||
1386 | while ((ch = from[i++]) != ',') | |
1387 | { | |
1388 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1389 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1390 | } | |
1391 | ||
1392 | while ((ch = from[i++]) != ':') | |
1393 | { | |
1394 | *len_ptr = *len_ptr << 4; | |
1395 | *len_ptr |= fromhex (ch) & 0x0f; | |
1396 | } | |
1397 | ||
fa593d66 PA |
1398 | if (*to_p == NULL) |
1399 | *to_p = xmalloc (*len_ptr); | |
1400 | ||
1401 | convert_ascii_to_int (&from[i++], *to_p, *len_ptr); | |
c906108c | 1402 | } |
2f2893d9 | 1403 | |
01f9e8fa DJ |
1404 | int |
1405 | decode_X_packet (char *from, int packet_len, CORE_ADDR *mem_addr_ptr, | |
fa593d66 | 1406 | unsigned int *len_ptr, unsigned char **to_p) |
01f9e8fa DJ |
1407 | { |
1408 | int i = 0; | |
1409 | char ch; | |
1410 | *mem_addr_ptr = *len_ptr = 0; | |
1411 | ||
1412 | while ((ch = from[i++]) != ',') | |
1413 | { | |
1414 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1415 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1416 | } | |
1417 | ||
1418 | while ((ch = from[i++]) != ':') | |
1419 | { | |
1420 | *len_ptr = *len_ptr << 4; | |
1421 | *len_ptr |= fromhex (ch) & 0x0f; | |
1422 | } | |
1423 | ||
fa593d66 PA |
1424 | if (*to_p == NULL) |
1425 | *to_p = xmalloc (*len_ptr); | |
1426 | ||
01f9e8fa | 1427 | if (remote_unescape_input ((const gdb_byte *) &from[i], packet_len - i, |
fa593d66 | 1428 | *to_p, *len_ptr) != *len_ptr) |
01f9e8fa DJ |
1429 | return -1; |
1430 | ||
1431 | return 0; | |
1432 | } | |
1433 | ||
0e7f50da | 1434 | /* Decode a qXfer write request. */ |
d08aafef | 1435 | |
0e7f50da | 1436 | int |
d08aafef | 1437 | decode_xfer_write (char *buf, int packet_len, CORE_ADDR *offset, |
0e7f50da UW |
1438 | unsigned int *len, unsigned char *data) |
1439 | { | |
1440 | char ch; | |
d08aafef | 1441 | char *b = buf; |
0e7f50da UW |
1442 | |
1443 | /* Extract the offset. */ | |
1444 | *offset = 0; | |
1445 | while ((ch = *buf++) != ':') | |
1446 | { | |
1447 | *offset = *offset << 4; | |
1448 | *offset |= fromhex (ch) & 0x0f; | |
1449 | } | |
1450 | ||
1451 | /* Get encoded data. */ | |
d08aafef | 1452 | packet_len -= buf - b; |
0e7f50da UW |
1453 | *len = remote_unescape_input ((const gdb_byte *) buf, packet_len, |
1454 | data, packet_len); | |
1455 | return 0; | |
1456 | } | |
1457 | ||
08388c79 DE |
1458 | /* Decode the parameters of a qSearch:memory packet. */ |
1459 | ||
1460 | int | |
1461 | decode_search_memory_packet (const char *buf, int packet_len, | |
1462 | CORE_ADDR *start_addrp, | |
1463 | CORE_ADDR *search_space_lenp, | |
1464 | gdb_byte *pattern, unsigned int *pattern_lenp) | |
1465 | { | |
1466 | const char *p = buf; | |
1467 | ||
1468 | p = decode_address_to_semicolon (start_addrp, p); | |
1469 | p = decode_address_to_semicolon (search_space_lenp, p); | |
1470 | packet_len -= p - buf; | |
1471 | *pattern_lenp = remote_unescape_input ((const gdb_byte *) p, packet_len, | |
1472 | pattern, packet_len); | |
1473 | return 0; | |
1474 | } | |
1475 | ||
95954743 PA |
1476 | static void |
1477 | free_sym_cache (struct sym_cache *sym) | |
1478 | { | |
1479 | if (sym != NULL) | |
1480 | { | |
1481 | free (sym->name); | |
1482 | free (sym); | |
1483 | } | |
1484 | } | |
1485 | ||
1486 | void | |
1487 | clear_symbol_cache (struct sym_cache **symcache_p) | |
1488 | { | |
1489 | struct sym_cache *sym, *next; | |
1490 | ||
1491 | /* Check the cache first. */ | |
1492 | for (sym = *symcache_p; sym; sym = next) | |
1493 | { | |
1494 | next = sym->next; | |
1495 | free_sym_cache (sym); | |
1496 | } | |
1497 | ||
1498 | *symcache_p = NULL; | |
1499 | } | |
1500 | ||
9836d6ea PA |
1501 | /* Get the address of NAME, and return it in ADDRP if found. if |
1502 | MAY_ASK_GDB is false, assume symbol cache misses are failures. | |
fd500816 DJ |
1503 | Returns 1 if the symbol is found, 0 if it is not, -1 on error. */ |
1504 | ||
2f2893d9 | 1505 | int |
9836d6ea | 1506 | look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb) |
2f2893d9 DJ |
1507 | { |
1508 | char own_buf[266], *p, *q; | |
1509 | int len; | |
fd500816 | 1510 | struct sym_cache *sym; |
95954743 PA |
1511 | struct process_info *proc; |
1512 | ||
1513 | proc = current_process (); | |
fd500816 DJ |
1514 | |
1515 | /* Check the cache first. */ | |
95954743 | 1516 | for (sym = proc->symbol_cache; sym; sym = sym->next) |
fd500816 DJ |
1517 | if (strcmp (name, sym->name) == 0) |
1518 | { | |
1519 | *addrp = sym->addr; | |
1520 | return 1; | |
1521 | } | |
2f2893d9 | 1522 | |
9836d6ea PA |
1523 | /* It might not be an appropriate time to look up a symbol, |
1524 | e.g. while we're trying to fetch registers. */ | |
1525 | if (!may_ask_gdb) | |
ea025f5f DJ |
1526 | return 0; |
1527 | ||
2f2893d9 DJ |
1528 | /* Send the request. */ |
1529 | strcpy (own_buf, "qSymbol:"); | |
1530 | hexify (own_buf + strlen ("qSymbol:"), name, strlen (name)); | |
1531 | if (putpkt (own_buf) < 0) | |
1532 | return -1; | |
1533 | ||
1534 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
1535 | len = getpkt (own_buf); | |
1536 | if (len < 0) | |
1537 | return -1; | |
1538 | ||
2bbe3cc1 DJ |
1539 | /* We ought to handle pretty much any packet at this point while we |
1540 | wait for the qSymbol "response". That requires re-entering the | |
1541 | main loop. For now, this is an adequate approximation; allow | |
1542 | GDB to read from memory while it figures out the address of the | |
1543 | symbol. */ | |
1544 | while (own_buf[0] == 'm') | |
1545 | { | |
1546 | CORE_ADDR mem_addr; | |
1547 | unsigned char *mem_buf; | |
1548 | unsigned int mem_len; | |
1549 | ||
1550 | decode_m_packet (&own_buf[1], &mem_addr, &mem_len); | |
bca929d3 | 1551 | mem_buf = xmalloc (mem_len); |
2bbe3cc1 DJ |
1552 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) |
1553 | convert_int_to_ascii (mem_buf, own_buf, mem_len); | |
1554 | else | |
1555 | write_enn (own_buf); | |
1556 | free (mem_buf); | |
1557 | if (putpkt (own_buf) < 0) | |
1558 | return -1; | |
1559 | len = getpkt (own_buf); | |
1560 | if (len < 0) | |
1561 | return -1; | |
1562 | } | |
1b3f6016 | 1563 | |
2f2893d9 DJ |
1564 | if (strncmp (own_buf, "qSymbol:", strlen ("qSymbol:")) != 0) |
1565 | { | |
2bbe3cc1 | 1566 | warning ("Malformed response to qSymbol, ignoring: %s\n", own_buf); |
2f2893d9 DJ |
1567 | return -1; |
1568 | } | |
1569 | ||
1570 | p = own_buf + strlen ("qSymbol:"); | |
1571 | q = p; | |
1572 | while (*q && *q != ':') | |
1573 | q++; | |
1574 | ||
1575 | /* Make sure we found a value for the symbol. */ | |
1576 | if (p == q || *q == '\0') | |
1577 | return 0; | |
1578 | ||
1579 | decode_address (addrp, p, q - p); | |
fd500816 DJ |
1580 | |
1581 | /* Save the symbol in our cache. */ | |
bca929d3 DE |
1582 | sym = xmalloc (sizeof (*sym)); |
1583 | sym->name = xstrdup (name); | |
fd500816 | 1584 | sym->addr = *addrp; |
95954743 PA |
1585 | sym->next = proc->symbol_cache; |
1586 | proc->symbol_cache = sym; | |
fd500816 | 1587 | |
2f2893d9 DJ |
1588 | return 1; |
1589 | } | |
c74d0ad8 | 1590 | |
fa593d66 PA |
1591 | /* Relocate an instruction to execute at a different address. OLDLOC |
1592 | is the address in the inferior memory where the instruction to | |
1593 | relocate is currently at. On input, TO points to the destination | |
1594 | where we want the instruction to be copied (and possibly adjusted) | |
1595 | to. On output, it points to one past the end of the resulting | |
1596 | instruction(s). The effect of executing the instruction at TO | |
1597 | shall be the same as if executing it at FROM. For example, call | |
1598 | instructions that implicitly push the return address on the stack | |
1599 | should be adjusted to return to the instruction after OLDLOC; | |
1600 | relative branches, and other PC-relative instructions need the | |
1601 | offset adjusted; etc. Returns 0 on success, -1 on failure. */ | |
1602 | ||
1603 | int | |
1604 | relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc) | |
1605 | { | |
1606 | char own_buf[266]; | |
1607 | int len; | |
1608 | ULONGEST written = 0; | |
1609 | ||
1610 | /* Send the request. */ | |
1611 | strcpy (own_buf, "qRelocInsn:"); | |
1612 | sprintf (own_buf, "qRelocInsn:%s;%s", paddress (oldloc), | |
1613 | paddress (*to)); | |
1614 | if (putpkt (own_buf) < 0) | |
1615 | return -1; | |
1616 | ||
1617 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
1618 | len = getpkt (own_buf); | |
1619 | if (len < 0) | |
1620 | return -1; | |
1621 | ||
1622 | /* We ought to handle pretty much any packet at this point while we | |
1623 | wait for the qRelocInsn "response". That requires re-entering | |
1624 | the main loop. For now, this is an adequate approximation; allow | |
1625 | GDB to access memory. */ | |
1626 | while (own_buf[0] == 'm' || own_buf[0] == 'M' || own_buf[0] == 'X') | |
1627 | { | |
1628 | CORE_ADDR mem_addr; | |
1629 | unsigned char *mem_buf = NULL; | |
1630 | unsigned int mem_len; | |
1631 | ||
1632 | if (own_buf[0] == 'm') | |
1633 | { | |
1634 | decode_m_packet (&own_buf[1], &mem_addr, &mem_len); | |
1635 | mem_buf = xmalloc (mem_len); | |
1636 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) | |
1637 | convert_int_to_ascii (mem_buf, own_buf, mem_len); | |
1638 | else | |
1639 | write_enn (own_buf); | |
1640 | } | |
1641 | else if (own_buf[0] == 'X') | |
1642 | { | |
1643 | if (decode_X_packet (&own_buf[1], len - 1, &mem_addr, | |
1644 | &mem_len, &mem_buf) < 0 | |
1645 | || write_inferior_memory (mem_addr, mem_buf, mem_len) != 0) | |
1646 | write_enn (own_buf); | |
1647 | else | |
1648 | write_ok (own_buf); | |
1649 | } | |
1650 | else | |
1651 | { | |
1652 | decode_M_packet (&own_buf[1], &mem_addr, &mem_len, &mem_buf); | |
1653 | if (write_inferior_memory (mem_addr, mem_buf, mem_len) == 0) | |
1654 | write_ok (own_buf); | |
1655 | else | |
1656 | write_enn (own_buf); | |
1657 | } | |
1658 | free (mem_buf); | |
1659 | if (putpkt (own_buf) < 0) | |
1660 | return -1; | |
1661 | len = getpkt (own_buf); | |
1662 | if (len < 0) | |
1663 | return -1; | |
1664 | } | |
1665 | ||
1666 | if (own_buf[0] == 'E') | |
1667 | { | |
1668 | warning ("An error occurred while relocating an instruction: %s\n", | |
1669 | own_buf); | |
1670 | return -1; | |
1671 | } | |
1672 | ||
1673 | if (strncmp (own_buf, "qRelocInsn:", strlen ("qRelocInsn:")) != 0) | |
1674 | { | |
1675 | warning ("Malformed response to qRelocInsn, ignoring: %s\n", | |
1676 | own_buf); | |
1677 | return -1; | |
1678 | } | |
1679 | ||
1680 | unpack_varlen_hex (own_buf + strlen ("qRelocInsn:"), &written); | |
1681 | ||
1682 | *to += written; | |
1683 | return 0; | |
1684 | } | |
1685 | ||
c74d0ad8 | 1686 | void |
bce7165d | 1687 | monitor_output (const char *msg) |
c74d0ad8 | 1688 | { |
bca929d3 | 1689 | char *buf = xmalloc (strlen (msg) * 2 + 2); |
c74d0ad8 DJ |
1690 | |
1691 | buf[0] = 'O'; | |
1692 | hexify (buf + 1, msg, 0); | |
1693 | ||
1694 | putpkt (buf); | |
1695 | free (buf); | |
1696 | } | |
255e7678 DJ |
1697 | |
1698 | /* Return a malloc allocated string with special characters from TEXT | |
1699 | replaced by entity references. */ | |
1700 | ||
1701 | char * | |
1702 | xml_escape_text (const char *text) | |
1703 | { | |
1704 | char *result; | |
1705 | int i, special; | |
1706 | ||
1707 | /* Compute the length of the result. */ | |
1708 | for (i = 0, special = 0; text[i] != '\0'; i++) | |
1709 | switch (text[i]) | |
1710 | { | |
1711 | case '\'': | |
1712 | case '\"': | |
1713 | special += 5; | |
1714 | break; | |
1715 | case '&': | |
1716 | special += 4; | |
1717 | break; | |
1718 | case '<': | |
1719 | case '>': | |
1720 | special += 3; | |
1721 | break; | |
1722 | default: | |
1723 | break; | |
1724 | } | |
1725 | ||
1726 | /* Expand the result. */ | |
bca929d3 | 1727 | result = xmalloc (i + special + 1); |
255e7678 DJ |
1728 | for (i = 0, special = 0; text[i] != '\0'; i++) |
1729 | switch (text[i]) | |
1730 | { | |
1731 | case '\'': | |
1732 | strcpy (result + i + special, "'"); | |
1733 | special += 5; | |
1734 | break; | |
1735 | case '\"': | |
1736 | strcpy (result + i + special, """); | |
1737 | special += 5; | |
1738 | break; | |
1739 | case '&': | |
1740 | strcpy (result + i + special, "&"); | |
1741 | special += 4; | |
1742 | break; | |
1743 | case '<': | |
1744 | strcpy (result + i + special, "<"); | |
1745 | special += 3; | |
1746 | break; | |
1747 | case '>': | |
1748 | strcpy (result + i + special, ">"); | |
1749 | special += 3; | |
1750 | break; | |
1751 | default: | |
1752 | result[i + special] = text[i]; | |
1753 | break; | |
1754 | } | |
1755 | result[i + special] = '\0'; | |
1756 | ||
1757 | return result; | |
1758 | } | |
07e059b5 VP |
1759 | |
1760 | void | |
1761 | buffer_grow (struct buffer *buffer, const char *data, size_t size) | |
1762 | { | |
1763 | char *new_buffer; | |
1764 | size_t new_buffer_size; | |
1765 | ||
1766 | if (size == 0) | |
1767 | return; | |
1768 | ||
1769 | new_buffer_size = buffer->buffer_size; | |
1770 | ||
1771 | if (new_buffer_size == 0) | |
1772 | new_buffer_size = 1; | |
1773 | ||
1774 | while (buffer->used_size + size > new_buffer_size) | |
1775 | new_buffer_size *= 2; | |
1776 | new_buffer = realloc (buffer->buffer, new_buffer_size); | |
1777 | if (!new_buffer) | |
1778 | abort (); | |
1779 | memcpy (new_buffer + buffer->used_size, data, size); | |
1780 | buffer->buffer = new_buffer; | |
1781 | buffer->buffer_size = new_buffer_size; | |
1782 | buffer->used_size += size; | |
1783 | } | |
1784 | ||
1785 | void | |
1786 | buffer_free (struct buffer *buffer) | |
1787 | { | |
1788 | if (!buffer) | |
1789 | return; | |
1790 | ||
1791 | free (buffer->buffer); | |
1792 | buffer->buffer = NULL; | |
1793 | buffer->buffer_size = 0; | |
1794 | buffer->used_size = 0; | |
1795 | } | |
1796 | ||
1797 | void | |
1798 | buffer_init (struct buffer *buffer) | |
1799 | { | |
1800 | memset (buffer, 0, sizeof (*buffer)); | |
1801 | } | |
1802 | ||
1803 | char* | |
1804 | buffer_finish (struct buffer *buffer) | |
1805 | { | |
1806 | char *ret = buffer->buffer; | |
1807 | buffer->buffer = NULL; | |
1808 | buffer->buffer_size = 0; | |
1809 | buffer->used_size = 0; | |
1810 | return ret; | |
1811 | } | |
1812 | ||
1813 | void | |
1814 | buffer_xml_printf (struct buffer *buffer, const char *format, ...) | |
1815 | { | |
1816 | va_list ap; | |
1817 | const char *f; | |
1818 | const char *prev; | |
1819 | int percent = 0; | |
1820 | ||
1821 | va_start (ap, format); | |
1822 | ||
1823 | prev = format; | |
1824 | for (f = format; *f; f++) | |
1825 | { | |
1826 | if (percent) | |
1827 | { | |
1b3f6016 PA |
1828 | switch (*f) |
1829 | { | |
1830 | case 's': | |
1831 | { | |
1832 | char *p; | |
1833 | char *a = va_arg (ap, char *); | |
1834 | buffer_grow (buffer, prev, f - prev - 1); | |
1835 | p = xml_escape_text (a); | |
1836 | buffer_grow_str (buffer, p); | |
1837 | free (p); | |
1838 | prev = f + 1; | |
1839 | } | |
1840 | break; | |
dc146f7c VP |
1841 | case 'd': |
1842 | { | |
1843 | int i = va_arg (ap, int); | |
1844 | char b[sizeof ("4294967295")]; | |
1845 | ||
1846 | buffer_grow (buffer, prev, f - prev - 1); | |
1847 | sprintf (b, "%d", i); | |
1848 | buffer_grow_str (buffer, b); | |
1849 | prev = f + 1; | |
1850 | } | |
1b3f6016 PA |
1851 | } |
1852 | percent = 0; | |
07e059b5 VP |
1853 | } |
1854 | else if (*f == '%') | |
1855 | percent = 1; | |
1856 | } | |
1857 | ||
1858 | buffer_grow_str (buffer, prev); | |
1859 | va_end (ap); | |
1860 | } | |
0fb4aa4b PA |
1861 | |
1862 | #endif |