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, |
4c38e0a4 | 3 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
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 | ||
7390519e PA |
77 | #if USE_WIN32API |
78 | # define INVALID_DESCRIPTOR INVALID_SOCKET | |
79 | #else | |
80 | # define INVALID_DESCRIPTOR -1 | |
81 | #endif | |
82 | ||
24b066ba DE |
83 | /* Extra value for readchar_callback. */ |
84 | enum { | |
85 | /* The callback is currently not scheduled. */ | |
86 | NOT_SCHEDULED = -1 | |
87 | }; | |
88 | ||
89 | /* Status of the readchar callback. | |
90 | Either NOT_SCHEDULED or the callback id. */ | |
91 | static int readchar_callback = NOT_SCHEDULED; | |
92 | ||
bc3b5632 | 93 | static int readchar (void); |
24b066ba DE |
94 | static void reset_readchar (void); |
95 | static void reschedule (void); | |
bc3b5632 | 96 | |
fd500816 DJ |
97 | /* A cache entry for a successfully looked-up symbol. */ |
98 | struct sym_cache | |
99 | { | |
95954743 | 100 | char *name; |
fd500816 DJ |
101 | CORE_ADDR addr; |
102 | struct sym_cache *next; | |
103 | }; | |
104 | ||
c906108c | 105 | int remote_debug = 0; |
03863182 | 106 | struct ui_file *gdb_stdlog; |
c906108c | 107 | |
7390519e | 108 | static int remote_desc = INVALID_DESCRIPTOR; |
8336d594 | 109 | static int listen_desc = INVALID_DESCRIPTOR; |
c906108c | 110 | |
0d62e5e8 DJ |
111 | /* FIXME headerize? */ |
112 | extern int using_threads; | |
113 | extern int debug_threads; | |
114 | ||
a6f3e723 SL |
115 | /* If true, then GDB has requested noack mode. */ |
116 | int noack_mode = 0; | |
117 | /* If true, then we tell GDB to use noack mode by default. */ | |
118 | int transport_is_reliable = 0; | |
119 | ||
0f48aa01 | 120 | #ifdef USE_WIN32API |
68070c10 PA |
121 | # define read(fd, buf, len) recv (fd, (char *) buf, len, 0) |
122 | # define write(fd, buf, len) send (fd, (char *) buf, len, 0) | |
0f48aa01 DJ |
123 | #endif |
124 | ||
8336d594 PA |
125 | int |
126 | gdb_connected (void) | |
127 | { | |
128 | return remote_desc != INVALID_DESCRIPTOR; | |
129 | } | |
130 | ||
131 | static void | |
132 | enable_async_notification (int fd) | |
133 | { | |
134 | #if defined(F_SETFL) && defined (FASYNC) | |
135 | int save_fcntl_flags; | |
136 | ||
137 | save_fcntl_flags = fcntl (fd, F_GETFL, 0); | |
138 | fcntl (fd, F_SETFL, save_fcntl_flags | FASYNC); | |
139 | #if defined (F_SETOWN) | |
140 | fcntl (fd, F_SETOWN, getpid ()); | |
141 | #endif | |
142 | #endif | |
143 | } | |
144 | ||
145 | static int | |
146 | handle_accept_event (int err, gdb_client_data client_data) | |
147 | { | |
148 | struct sockaddr_in sockaddr; | |
149 | socklen_t tmp; | |
150 | ||
151 | if (debug_threads) | |
152 | fprintf (stderr, "handling possible accept event\n"); | |
153 | ||
154 | tmp = sizeof (sockaddr); | |
155 | remote_desc = accept (listen_desc, (struct sockaddr *) &sockaddr, &tmp); | |
156 | if (remote_desc == -1) | |
157 | perror_with_name ("Accept failed"); | |
158 | ||
159 | /* Enable TCP keep alive process. */ | |
160 | tmp = 1; | |
161 | setsockopt (remote_desc, SOL_SOCKET, SO_KEEPALIVE, | |
162 | (char *) &tmp, sizeof (tmp)); | |
163 | ||
164 | /* Tell TCP not to delay small packets. This greatly speeds up | |
165 | interactive response. */ | |
166 | tmp = 1; | |
167 | setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY, | |
168 | (char *) &tmp, sizeof (tmp)); | |
169 | ||
170 | #ifndef USE_WIN32API | |
171 | close (listen_desc); /* No longer need this */ | |
172 | ||
173 | signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply | |
174 | exits when the remote side dies. */ | |
175 | #else | |
176 | closesocket (listen_desc); /* No longer need this */ | |
177 | #endif | |
178 | ||
179 | delete_file_handler (listen_desc); | |
180 | ||
181 | /* Convert IP address to string. */ | |
182 | fprintf (stderr, "Remote debugging from host %s\n", | |
183 | inet_ntoa (sockaddr.sin_addr)); | |
184 | ||
185 | enable_async_notification (remote_desc); | |
186 | ||
187 | /* Register the event loop handler. */ | |
188 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
189 | ||
190 | /* We have a new GDB connection now. If we were disconnected | |
191 | tracing, there's a window where the target could report a stop | |
192 | event to the event loop, and since we have a connection now, we'd | |
193 | try to send vStopped notifications to GDB. But, don't do that | |
194 | until GDB as selected all-stop/non-stop, and has queried the | |
195 | threads' status ('?'). */ | |
196 | target_async (0); | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
c906108c SS |
201 | /* Open a connection to a remote debugger. |
202 | NAME is the filename used for communication. */ | |
203 | ||
204 | void | |
fba45db2 | 205 | remote_open (char *name) |
c906108c | 206 | { |
8264bb58 DJ |
207 | char *port_str; |
208 | ||
209 | port_str = strchr (name, ':'); | |
210 | if (port_str == NULL) | |
c906108c | 211 | { |
b80864fb DJ |
212 | #ifdef USE_WIN32API |
213 | error ("Only <host>:<port> is supported on this platform."); | |
214 | #else | |
8264bb58 DJ |
215 | struct stat statbuf; |
216 | ||
217 | if (stat (name, &statbuf) == 0 | |
218 | && (S_ISCHR (statbuf.st_mode) || S_ISFIFO (statbuf.st_mode))) | |
219 | remote_desc = open (name, O_RDWR); | |
220 | else | |
221 | { | |
222 | errno = EINVAL; | |
223 | remote_desc = -1; | |
224 | } | |
225 | ||
c906108c SS |
226 | if (remote_desc < 0) |
227 | perror_with_name ("Could not open remote device"); | |
228 | ||
229 | #ifdef HAVE_TERMIOS | |
230 | { | |
231 | struct termios termios; | |
c5aa993b | 232 | tcgetattr (remote_desc, &termios); |
c906108c SS |
233 | |
234 | termios.c_iflag = 0; | |
235 | termios.c_oflag = 0; | |
236 | termios.c_lflag = 0; | |
c5aa993b | 237 | termios.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 238 | termios.c_cflag |= CLOCAL | CS8; |
d0608e50 | 239 | termios.c_cc[VMIN] = 1; |
c906108c SS |
240 | termios.c_cc[VTIME] = 0; |
241 | ||
c5aa993b | 242 | tcsetattr (remote_desc, TCSANOW, &termios); |
c906108c SS |
243 | } |
244 | #endif | |
245 | ||
246 | #ifdef HAVE_TERMIO | |
247 | { | |
248 | struct termio termio; | |
249 | ioctl (remote_desc, TCGETA, &termio); | |
250 | ||
251 | termio.c_iflag = 0; | |
252 | termio.c_oflag = 0; | |
253 | termio.c_lflag = 0; | |
c5aa993b | 254 | termio.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 255 | termio.c_cflag |= CLOCAL | CS8; |
d0608e50 | 256 | termio.c_cc[VMIN] = 1; |
c906108c SS |
257 | termio.c_cc[VTIME] = 0; |
258 | ||
259 | ioctl (remote_desc, TCSETA, &termio); | |
260 | } | |
261 | #endif | |
262 | ||
263 | #ifdef HAVE_SGTTY | |
264 | { | |
265 | struct sgttyb sg; | |
266 | ||
267 | ioctl (remote_desc, TIOCGETP, &sg); | |
268 | sg.sg_flags = RAW; | |
269 | ioctl (remote_desc, TIOCSETP, &sg); | |
270 | } | |
271 | #endif | |
272 | ||
e641a1ca | 273 | fprintf (stderr, "Remote debugging using %s\n", name); |
a6f3e723 SL |
274 | |
275 | transport_is_reliable = 0; | |
8336d594 PA |
276 | |
277 | enable_async_notification (remote_desc); | |
278 | ||
279 | /* Register the event loop handler. */ | |
280 | add_file_handler (remote_desc, handle_serial_event, NULL); | |
281 | #endif /* USE_WIN32API */ | |
c906108c SS |
282 | } |
283 | else | |
284 | { | |
b80864fb DJ |
285 | #ifdef USE_WIN32API |
286 | static int winsock_initialized; | |
287 | #endif | |
c906108c SS |
288 | int port; |
289 | struct sockaddr_in sockaddr; | |
f450004a | 290 | socklen_t tmp; |
2d717e4f | 291 | char *port_end; |
c906108c | 292 | |
2d717e4f DJ |
293 | port = strtoul (port_str + 1, &port_end, 10); |
294 | if (port_str[1] == '\0' || *port_end != '\0') | |
295 | fatal ("Bad port argument: %s", name); | |
c906108c | 296 | |
b80864fb DJ |
297 | #ifdef USE_WIN32API |
298 | if (!winsock_initialized) | |
299 | { | |
300 | WSADATA wsad; | |
301 | ||
302 | WSAStartup (MAKEWORD (1, 0), &wsad); | |
303 | winsock_initialized = 1; | |
304 | } | |
305 | #endif | |
306 | ||
8336d594 | 307 | listen_desc = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP); |
363a6e9f | 308 | if (listen_desc == -1) |
c906108c SS |
309 | perror_with_name ("Can't open socket"); |
310 | ||
311 | /* Allow rapid reuse of this port. */ | |
312 | tmp = 1; | |
8336d594 | 313 | setsockopt (listen_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, |
c5aa993b | 314 | sizeof (tmp)); |
c906108c SS |
315 | |
316 | sockaddr.sin_family = PF_INET; | |
c5aa993b | 317 | sockaddr.sin_port = htons (port); |
c906108c SS |
318 | sockaddr.sin_addr.s_addr = INADDR_ANY; |
319 | ||
8336d594 PA |
320 | if (bind (listen_desc, (struct sockaddr *) &sockaddr, sizeof (sockaddr)) |
321 | || listen (listen_desc, 1)) | |
c906108c SS |
322 | perror_with_name ("Can't bind address"); |
323 | ||
6f8486da DJ |
324 | /* If port is zero, a random port will be selected, and the |
325 | fprintf below needs to know what port was selected. */ | |
326 | if (port == 0) | |
327 | { | |
328 | socklen_t len = sizeof (sockaddr); | |
8336d594 | 329 | if (getsockname (listen_desc, (struct sockaddr *) &sockaddr, &len) < 0 |
6f8486da DJ |
330 | || len < sizeof (sockaddr)) |
331 | perror_with_name ("Can't determine port"); | |
332 | port = ntohs (sockaddr.sin_port); | |
333 | } | |
334 | ||
6910d122 | 335 | fprintf (stderr, "Listening on port %d\n", port); |
b80864fb | 336 | fflush (stderr); |
6910d122 | 337 | |
8336d594 PA |
338 | /* Register the event loop handler. */ |
339 | add_file_handler (listen_desc, handle_accept_event, NULL); | |
a6f3e723 SL |
340 | |
341 | transport_is_reliable = 1; | |
c906108c | 342 | } |
c906108c SS |
343 | } |
344 | ||
345 | void | |
fba45db2 | 346 | remote_close (void) |
c906108c | 347 | { |
bd99dc85 PA |
348 | delete_file_handler (remote_desc); |
349 | ||
b80864fb DJ |
350 | #ifdef USE_WIN32API |
351 | closesocket (remote_desc); | |
352 | #else | |
c906108c | 353 | close (remote_desc); |
b80864fb | 354 | #endif |
8336d594 | 355 | remote_desc = INVALID_DESCRIPTOR; |
24b066ba DE |
356 | |
357 | reset_readchar (); | |
c906108c SS |
358 | } |
359 | ||
360 | /* Convert hex digit A to a number. */ | |
361 | ||
362 | static int | |
fba45db2 | 363 | fromhex (int a) |
c906108c SS |
364 | { |
365 | if (a >= '0' && a <= '9') | |
366 | return a - '0'; | |
367 | else if (a >= 'a' && a <= 'f') | |
368 | return a - 'a' + 10; | |
369 | else | |
370 | error ("Reply contains invalid hex digit"); | |
0a30fbc4 | 371 | return 0; |
c906108c SS |
372 | } |
373 | ||
95954743 PA |
374 | static const char hexchars[] = "0123456789abcdef"; |
375 | ||
376 | static int | |
377 | ishex (int ch, int *val) | |
378 | { | |
379 | if ((ch >= 'a') && (ch <= 'f')) | |
380 | { | |
381 | *val = ch - 'a' + 10; | |
382 | return 1; | |
383 | } | |
384 | if ((ch >= 'A') && (ch <= 'F')) | |
385 | { | |
386 | *val = ch - 'A' + 10; | |
387 | return 1; | |
388 | } | |
389 | if ((ch >= '0') && (ch <= '9')) | |
390 | { | |
391 | *val = ch - '0'; | |
392 | return 1; | |
393 | } | |
394 | return 0; | |
395 | } | |
396 | ||
ce3a066d DJ |
397 | int |
398 | unhexify (char *bin, const char *hex, int count) | |
399 | { | |
400 | int i; | |
401 | ||
402 | for (i = 0; i < count; i++) | |
403 | { | |
404 | if (hex[0] == 0 || hex[1] == 0) | |
1b3f6016 PA |
405 | { |
406 | /* Hex string is short, or of uneven length. | |
407 | Return the count that has been converted so far. */ | |
408 | return i; | |
409 | } | |
ce3a066d DJ |
410 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); |
411 | hex += 2; | |
412 | } | |
413 | return i; | |
414 | } | |
415 | ||
dae5f5cf | 416 | void |
2f2893d9 DJ |
417 | decode_address (CORE_ADDR *addrp, const char *start, int len) |
418 | { | |
419 | CORE_ADDR addr; | |
420 | char ch; | |
421 | int i; | |
422 | ||
423 | addr = 0; | |
424 | for (i = 0; i < len; i++) | |
425 | { | |
426 | ch = start[i]; | |
427 | addr = addr << 4; | |
428 | addr = addr | (fromhex (ch) & 0x0f); | |
429 | } | |
430 | *addrp = addr; | |
431 | } | |
432 | ||
89be2091 DJ |
433 | const char * |
434 | decode_address_to_semicolon (CORE_ADDR *addrp, const char *start) | |
435 | { | |
436 | const char *end; | |
437 | ||
438 | end = start; | |
439 | while (*end != '\0' && *end != ';') | |
440 | end++; | |
441 | ||
442 | decode_address (addrp, start, end - start); | |
443 | ||
444 | if (*end == ';') | |
445 | end++; | |
446 | return end; | |
447 | } | |
448 | ||
c906108c SS |
449 | /* Convert number NIB to a hex digit. */ |
450 | ||
451 | static int | |
fba45db2 | 452 | tohex (int nib) |
c906108c SS |
453 | { |
454 | if (nib < 10) | |
455 | return '0' + nib; | |
456 | else | |
457 | return 'a' + nib - 10; | |
458 | } | |
459 | ||
ce3a066d DJ |
460 | int |
461 | hexify (char *hex, const char *bin, int count) | |
462 | { | |
463 | int i; | |
464 | ||
465 | /* May use a length, or a nul-terminated string as input. */ | |
466 | if (count == 0) | |
467 | count = strlen (bin); | |
468 | ||
469 | for (i = 0; i < count; i++) | |
470 | { | |
471 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
472 | *hex++ = tohex (*bin++ & 0xf); | |
473 | } | |
474 | *hex = 0; | |
475 | return i; | |
476 | } | |
477 | ||
01f9e8fa DJ |
478 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
479 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
480 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
481 | (which may be more than *OUT_LEN due to escape characters). The | |
482 | total number of bytes in the output buffer will be at most | |
483 | OUT_MAXLEN. */ | |
484 | ||
485 | int | |
486 | remote_escape_output (const gdb_byte *buffer, int len, | |
487 | gdb_byte *out_buf, int *out_len, | |
488 | int out_maxlen) | |
489 | { | |
490 | int input_index, output_index; | |
491 | ||
492 | output_index = 0; | |
493 | for (input_index = 0; input_index < len; input_index++) | |
494 | { | |
495 | gdb_byte b = buffer[input_index]; | |
496 | ||
497 | if (b == '$' || b == '#' || b == '}' || b == '*') | |
498 | { | |
499 | /* These must be escaped. */ | |
500 | if (output_index + 2 > out_maxlen) | |
501 | break; | |
502 | out_buf[output_index++] = '}'; | |
503 | out_buf[output_index++] = b ^ 0x20; | |
504 | } | |
505 | else | |
506 | { | |
507 | if (output_index + 1 > out_maxlen) | |
508 | break; | |
509 | out_buf[output_index++] = b; | |
510 | } | |
511 | } | |
512 | ||
513 | *out_len = input_index; | |
514 | return output_index; | |
515 | } | |
516 | ||
517 | /* Convert BUFFER, escaped data LEN bytes long, into binary data | |
518 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
519 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
520 | ||
521 | This function reverses remote_escape_output. It allows more | |
522 | escaped characters than that function does, in particular because | |
523 | '*' must be escaped to avoid the run-length encoding processing | |
524 | in reading packets. */ | |
525 | ||
526 | static int | |
527 | remote_unescape_input (const gdb_byte *buffer, int len, | |
528 | gdb_byte *out_buf, int out_maxlen) | |
529 | { | |
530 | int input_index, output_index; | |
531 | int escaped; | |
532 | ||
533 | output_index = 0; | |
534 | escaped = 0; | |
535 | for (input_index = 0; input_index < len; input_index++) | |
536 | { | |
537 | gdb_byte b = buffer[input_index]; | |
538 | ||
539 | if (output_index + 1 > out_maxlen) | |
540 | error ("Received too much data from the target."); | |
541 | ||
542 | if (escaped) | |
543 | { | |
544 | out_buf[output_index++] = b ^ 0x20; | |
545 | escaped = 0; | |
546 | } | |
547 | else if (b == '}') | |
548 | escaped = 1; | |
549 | else | |
550 | out_buf[output_index++] = b; | |
551 | } | |
552 | ||
553 | if (escaped) | |
554 | error ("Unmatched escape character in target response."); | |
555 | ||
556 | return output_index; | |
557 | } | |
558 | ||
5ffff7c1 DJ |
559 | /* Look for a sequence of characters which can be run-length encoded. |
560 | If there are any, update *CSUM and *P. Otherwise, output the | |
561 | single character. Return the number of characters consumed. */ | |
562 | ||
563 | static int | |
564 | try_rle (char *buf, int remaining, unsigned char *csum, char **p) | |
565 | { | |
566 | int n; | |
567 | ||
568 | /* Always output the character. */ | |
569 | *csum += buf[0]; | |
570 | *(*p)++ = buf[0]; | |
571 | ||
572 | /* Don't go past '~'. */ | |
573 | if (remaining > 97) | |
574 | remaining = 97; | |
575 | ||
576 | for (n = 1; n < remaining; n++) | |
577 | if (buf[n] != buf[0]) | |
578 | break; | |
579 | ||
580 | /* N is the index of the first character not the same as buf[0]. | |
581 | buf[0] is counted twice, so by decrementing N, we get the number | |
582 | of characters the RLE sequence will replace. */ | |
583 | n--; | |
584 | ||
585 | if (n < 3) | |
586 | return 1; | |
587 | ||
588 | /* Skip the frame characters. The manual says to skip '+' and '-' | |
589 | also, but there's no reason to. Unfortunately these two unusable | |
590 | characters double the encoded length of a four byte zero | |
591 | value. */ | |
592 | while (n + 29 == '$' || n + 29 == '#') | |
593 | n--; | |
594 | ||
595 | *csum += '*'; | |
596 | *(*p)++ = '*'; | |
597 | *csum += n + 29; | |
598 | *(*p)++ = n + 29; | |
599 | ||
600 | return n + 1; | |
601 | } | |
602 | ||
95954743 PA |
603 | char * |
604 | unpack_varlen_hex (char *buff, /* packet to parse */ | |
605 | ULONGEST *result) | |
606 | { | |
607 | int nibble; | |
608 | ULONGEST retval = 0; | |
609 | ||
610 | while (ishex (*buff, &nibble)) | |
611 | { | |
612 | buff++; | |
613 | retval = retval << 4; | |
614 | retval |= nibble & 0x0f; | |
615 | } | |
616 | *result = retval; | |
617 | return buff; | |
618 | } | |
619 | ||
620 | /* Write a PTID to BUF. Returns BUF+CHARACTERS_WRITTEN. */ | |
621 | ||
622 | char * | |
623 | write_ptid (char *buf, ptid_t ptid) | |
624 | { | |
625 | int pid, tid; | |
626 | ||
627 | if (multi_process) | |
628 | { | |
629 | pid = ptid_get_pid (ptid); | |
630 | if (pid < 0) | |
631 | buf += sprintf (buf, "p-%x.", -pid); | |
632 | else | |
633 | buf += sprintf (buf, "p%x.", pid); | |
634 | } | |
635 | tid = ptid_get_lwp (ptid); | |
636 | if (tid < 0) | |
637 | buf += sprintf (buf, "-%x", -tid); | |
638 | else | |
639 | buf += sprintf (buf, "%x", tid); | |
640 | ||
641 | return buf; | |
642 | } | |
643 | ||
644 | ULONGEST | |
645 | hex_or_minus_one (char *buf, char **obuf) | |
646 | { | |
647 | ULONGEST ret; | |
648 | ||
649 | if (strncmp (buf, "-1", 2) == 0) | |
650 | { | |
651 | ret = (ULONGEST) -1; | |
652 | buf += 2; | |
653 | } | |
654 | else | |
655 | buf = unpack_varlen_hex (buf, &ret); | |
656 | ||
657 | if (obuf) | |
658 | *obuf = buf; | |
659 | ||
660 | return ret; | |
661 | } | |
662 | ||
663 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
664 | passed the last parsed char. Returns null_ptid on error. */ | |
665 | ptid_t | |
666 | read_ptid (char *buf, char **obuf) | |
667 | { | |
668 | char *p = buf; | |
669 | char *pp; | |
670 | ULONGEST pid = 0, tid = 0; | |
671 | ||
672 | if (*p == 'p') | |
673 | { | |
674 | /* Multi-process ptid. */ | |
675 | pp = unpack_varlen_hex (p + 1, &pid); | |
676 | if (*pp != '.') | |
677 | error ("invalid remote ptid: %s\n", p); | |
678 | ||
679 | p = pp + 1; | |
680 | ||
681 | tid = hex_or_minus_one (p, &pp); | |
682 | ||
683 | if (obuf) | |
684 | *obuf = pp; | |
685 | return ptid_build (pid, tid, 0); | |
686 | } | |
687 | ||
688 | /* No multi-process. Just a tid. */ | |
689 | tid = hex_or_minus_one (p, &pp); | |
690 | ||
691 | /* Since the stub is not sending a process id, then default to | |
692 | what's in the current inferior. */ | |
693 | pid = ptid_get_pid (((struct inferior_list_entry *) current_inferior)->id); | |
694 | ||
695 | if (obuf) | |
696 | *obuf = pp; | |
697 | return ptid_build (pid, tid, 0); | |
698 | } | |
699 | ||
c906108c | 700 | /* Send a packet to the remote machine, with error checking. |
01f9e8fa DJ |
701 | The data of the packet is in BUF, and the length of the |
702 | packet is in CNT. Returns >= 0 on success, -1 otherwise. */ | |
c906108c | 703 | |
bd99dc85 PA |
704 | static int |
705 | putpkt_binary_1 (char *buf, int cnt, int is_notif) | |
c906108c SS |
706 | { |
707 | int i; | |
708 | unsigned char csum = 0; | |
0a30fbc4 | 709 | char *buf2; |
c906108c | 710 | char *p; |
bc3b5632 | 711 | int cc; |
c906108c | 712 | |
bca929d3 | 713 | buf2 = xmalloc (PBUFSIZ); |
0a30fbc4 | 714 | |
c906108c SS |
715 | /* Copy the packet into buffer BUF2, encapsulating it |
716 | and giving it a checksum. */ | |
717 | ||
718 | p = buf2; | |
bd99dc85 PA |
719 | if (is_notif) |
720 | *p++ = '%'; | |
721 | else | |
722 | *p++ = '$'; | |
c906108c | 723 | |
5ffff7c1 DJ |
724 | for (i = 0; i < cnt;) |
725 | i += try_rle (buf + i, cnt - i, &csum, &p); | |
726 | ||
c906108c SS |
727 | *p++ = '#'; |
728 | *p++ = tohex ((csum >> 4) & 0xf); | |
729 | *p++ = tohex (csum & 0xf); | |
730 | ||
731 | *p = '\0'; | |
732 | ||
733 | /* Send it over and over until we get a positive ack. */ | |
734 | ||
735 | do | |
736 | { | |
0f48aa01 | 737 | if (write (remote_desc, buf2, p - buf2) != p - buf2) |
c906108c SS |
738 | { |
739 | perror ("putpkt(write)"); | |
f88c79e6 | 740 | free (buf2); |
c906108c SS |
741 | return -1; |
742 | } | |
743 | ||
bd99dc85 | 744 | if (noack_mode || is_notif) |
a6f3e723 SL |
745 | { |
746 | /* Don't expect an ack then. */ | |
747 | if (remote_debug) | |
748 | { | |
bd99dc85 PA |
749 | if (is_notif) |
750 | fprintf (stderr, "putpkt (\"%s\"); [notif]\n", buf2); | |
751 | else | |
752 | fprintf (stderr, "putpkt (\"%s\"); [noack mode]\n", buf2); | |
a6f3e723 SL |
753 | fflush (stderr); |
754 | } | |
755 | break; | |
756 | } | |
757 | ||
c906108c | 758 | if (remote_debug) |
0d62e5e8 DJ |
759 | { |
760 | fprintf (stderr, "putpkt (\"%s\"); [looking for ack]\n", buf2); | |
761 | fflush (stderr); | |
762 | } | |
0d62e5e8 | 763 | |
bc3b5632 | 764 | cc = readchar (); |
c906108c | 765 | |
bc3b5632 DE |
766 | if (cc < 0) |
767 | { | |
0a30fbc4 | 768 | free (buf2); |
c906108c SS |
769 | return -1; |
770 | } | |
0d62e5e8 | 771 | |
bc3b5632 DE |
772 | if (remote_debug) |
773 | { | |
774 | fprintf (stderr, "[received '%c' (0x%x)]\n", cc, cc); | |
775 | fflush (stderr); | |
776 | } | |
777 | ||
0d62e5e8 | 778 | /* Check for an input interrupt while we're here. */ |
bc3b5632 | 779 | if (cc == '\003' && current_inferior != NULL) |
ef57601b | 780 | (*the_target->request_interrupt) (); |
c906108c | 781 | } |
bc3b5632 | 782 | while (cc != '+'); |
c906108c | 783 | |
0a30fbc4 | 784 | free (buf2); |
c906108c SS |
785 | return 1; /* Success! */ |
786 | } | |
787 | ||
bd99dc85 PA |
788 | int |
789 | putpkt_binary (char *buf, int cnt) | |
790 | { | |
791 | return putpkt_binary_1 (buf, cnt, 0); | |
792 | } | |
793 | ||
01f9e8fa DJ |
794 | /* Send a packet to the remote machine, with error checking. The data |
795 | of the packet is in BUF, and the packet should be a NUL-terminated | |
796 | string. Returns >= 0 on success, -1 otherwise. */ | |
797 | ||
798 | int | |
799 | putpkt (char *buf) | |
800 | { | |
801 | return putpkt_binary (buf, strlen (buf)); | |
802 | } | |
803 | ||
bd99dc85 PA |
804 | int |
805 | putpkt_notif (char *buf) | |
806 | { | |
807 | return putpkt_binary_1 (buf, strlen (buf), 1); | |
808 | } | |
809 | ||
c906108c SS |
810 | /* Come here when we get an input interrupt from the remote side. This |
811 | interrupt should only be active while we are waiting for the child to do | |
bc3b5632 DE |
812 | something. Thus this assumes readchar:bufcnt is 0. |
813 | About the only thing that should come through is a ^C, which | |
ef57601b | 814 | will cause us to request child interruption. */ |
c906108c SS |
815 | |
816 | static void | |
0a30fbc4 | 817 | input_interrupt (int unused) |
c906108c | 818 | { |
cf30a8e1 C |
819 | fd_set readset; |
820 | struct timeval immediate = { 0, 0 }; | |
c906108c | 821 | |
cf30a8e1 C |
822 | /* Protect against spurious interrupts. This has been observed to |
823 | be a problem under NetBSD 1.4 and 1.5. */ | |
c906108c | 824 | |
cf30a8e1 C |
825 | FD_ZERO (&readset); |
826 | FD_SET (remote_desc, &readset); | |
827 | if (select (remote_desc + 1, &readset, 0, 0, &immediate) > 0) | |
c906108c | 828 | { |
cf30a8e1 | 829 | int cc; |
fd500816 | 830 | char c = 0; |
7390519e | 831 | |
0f48aa01 | 832 | cc = read (remote_desc, &c, 1); |
c906108c | 833 | |
2d717e4f | 834 | if (cc != 1 || c != '\003' || current_inferior == NULL) |
cf30a8e1 | 835 | { |
fd500816 DJ |
836 | fprintf (stderr, "input_interrupt, count = %d c = %d ('%c')\n", |
837 | cc, c, c); | |
cf30a8e1 C |
838 | return; |
839 | } | |
7390519e | 840 | |
ef57601b | 841 | (*the_target->request_interrupt) (); |
cf30a8e1 | 842 | } |
c906108c | 843 | } |
7390519e PA |
844 | |
845 | /* Check if the remote side sent us an interrupt request (^C). */ | |
846 | void | |
847 | check_remote_input_interrupt_request (void) | |
848 | { | |
849 | /* This function may be called before establishing communications, | |
850 | therefore we need to validate the remote descriptor. */ | |
851 | ||
852 | if (remote_desc == INVALID_DESCRIPTOR) | |
853 | return; | |
854 | ||
855 | input_interrupt (0); | |
856 | } | |
b80864fb DJ |
857 | |
858 | /* Asynchronous I/O support. SIGIO must be enabled when waiting, in order to | |
859 | accept Control-C from the client, and must be disabled when talking to | |
860 | the client. */ | |
c906108c | 861 | |
a20d5e98 | 862 | static void |
62ea82f5 DJ |
863 | unblock_async_io (void) |
864 | { | |
b80864fb | 865 | #ifndef USE_WIN32API |
62ea82f5 | 866 | sigset_t sigio_set; |
a20d5e98 | 867 | |
62ea82f5 DJ |
868 | sigemptyset (&sigio_set); |
869 | sigaddset (&sigio_set, SIGIO); | |
870 | sigprocmask (SIG_UNBLOCK, &sigio_set, NULL); | |
b80864fb | 871 | #endif |
62ea82f5 DJ |
872 | } |
873 | ||
ac8c974e AR |
874 | #ifdef __QNX__ |
875 | static void | |
876 | nto_comctrl (int enable) | |
877 | { | |
878 | struct sigevent event; | |
879 | ||
880 | if (enable) | |
881 | { | |
882 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
883 | event.sigev_signo = SIGIO; | |
884 | event.sigev_code = 0; | |
885 | event.sigev_value.sival_ptr = NULL; | |
886 | event.sigev_priority = -1; | |
887 | ionotify (remote_desc, _NOTIFY_ACTION_POLLARM, _NOTIFY_COND_INPUT, | |
888 | &event); | |
889 | } | |
890 | else | |
891 | ionotify (remote_desc, _NOTIFY_ACTION_POLL, _NOTIFY_COND_INPUT, NULL); | |
892 | } | |
893 | #endif /* __QNX__ */ | |
894 | ||
895 | ||
fd500816 DJ |
896 | /* Current state of asynchronous I/O. */ |
897 | static int async_io_enabled; | |
898 | ||
899 | /* Enable asynchronous I/O. */ | |
c906108c | 900 | void |
fba45db2 | 901 | enable_async_io (void) |
c906108c | 902 | { |
fd500816 DJ |
903 | if (async_io_enabled) |
904 | return; | |
905 | ||
b80864fb | 906 | #ifndef USE_WIN32API |
c906108c | 907 | signal (SIGIO, input_interrupt); |
b80864fb | 908 | #endif |
fd500816 | 909 | async_io_enabled = 1; |
ac8c974e AR |
910 | #ifdef __QNX__ |
911 | nto_comctrl (1); | |
912 | #endif /* __QNX__ */ | |
c906108c SS |
913 | } |
914 | ||
fd500816 | 915 | /* Disable asynchronous I/O. */ |
c906108c | 916 | void |
fba45db2 | 917 | disable_async_io (void) |
c906108c | 918 | { |
fd500816 DJ |
919 | if (!async_io_enabled) |
920 | return; | |
921 | ||
b80864fb | 922 | #ifndef USE_WIN32API |
c906108c | 923 | signal (SIGIO, SIG_IGN); |
b80864fb | 924 | #endif |
fd500816 | 925 | async_io_enabled = 0; |
ac8c974e AR |
926 | #ifdef __QNX__ |
927 | nto_comctrl (0); | |
928 | #endif /* __QNX__ */ | |
929 | ||
c906108c SS |
930 | } |
931 | ||
a20d5e98 DJ |
932 | void |
933 | initialize_async_io (void) | |
934 | { | |
935 | /* Make sure that async I/O starts disabled. */ | |
936 | async_io_enabled = 1; | |
937 | disable_async_io (); | |
938 | ||
939 | /* Make sure the signal is unblocked. */ | |
940 | unblock_async_io (); | |
941 | } | |
942 | ||
24b066ba DE |
943 | /* Internal buffer used by readchar. |
944 | These are global to readchar because reschedule_remote needs to be | |
945 | able to tell whether the buffer is empty. */ | |
946 | ||
947 | static unsigned char readchar_buf[BUFSIZ]; | |
948 | static int readchar_bufcnt = 0; | |
949 | static unsigned char *readchar_bufp; | |
950 | ||
c906108c SS |
951 | /* Returns next char from remote GDB. -1 if error. */ |
952 | ||
953 | static int | |
fba45db2 | 954 | readchar (void) |
c906108c | 955 | { |
24b066ba | 956 | int ch; |
c906108c | 957 | |
24b066ba DE |
958 | if (readchar_bufcnt == 0) |
959 | { | |
960 | readchar_bufcnt = read (remote_desc, readchar_buf, sizeof (readchar_buf)); | |
c906108c | 961 | |
24b066ba DE |
962 | if (readchar_bufcnt <= 0) |
963 | { | |
964 | if (readchar_bufcnt == 0) | |
965 | fprintf (stderr, "readchar: Got EOF\n"); | |
966 | else | |
967 | perror ("readchar"); | |
c906108c | 968 | |
24b066ba DE |
969 | return -1; |
970 | } | |
c906108c | 971 | |
24b066ba | 972 | readchar_bufp = readchar_buf; |
c906108c SS |
973 | } |
974 | ||
24b066ba DE |
975 | readchar_bufcnt--; |
976 | ch = *readchar_bufp++; | |
977 | reschedule (); | |
978 | return ch; | |
979 | } | |
980 | ||
981 | /* Reset the readchar state machine. */ | |
982 | ||
983 | static void | |
984 | reset_readchar (void) | |
985 | { | |
986 | readchar_bufcnt = 0; | |
987 | if (readchar_callback != NOT_SCHEDULED) | |
988 | { | |
989 | delete_callback_event (readchar_callback); | |
990 | readchar_callback = NOT_SCHEDULED; | |
991 | } | |
992 | } | |
993 | ||
994 | /* Process remaining data in readchar_buf. */ | |
995 | ||
996 | static int | |
997 | process_remaining (void *context) | |
998 | { | |
999 | int res; | |
1000 | ||
1001 | /* This is a one-shot event. */ | |
1002 | readchar_callback = NOT_SCHEDULED; | |
1003 | ||
1004 | if (readchar_bufcnt > 0) | |
1005 | res = handle_serial_event (0, NULL); | |
1006 | else | |
1007 | res = 0; | |
1008 | ||
1009 | return res; | |
1010 | } | |
1011 | ||
1012 | /* If there is still data in the buffer, queue another event to process it, | |
1013 | we can't sleep in select yet. */ | |
1014 | ||
1015 | static void | |
1016 | reschedule (void) | |
1017 | { | |
1018 | if (readchar_bufcnt > 0 && readchar_callback == NOT_SCHEDULED) | |
1019 | readchar_callback = append_callback_event (process_remaining, NULL); | |
c906108c SS |
1020 | } |
1021 | ||
1022 | /* Read a packet from the remote machine, with error checking, | |
1023 | and store it in BUF. Returns length of packet, or negative if error. */ | |
1024 | ||
1025 | int | |
fba45db2 | 1026 | getpkt (char *buf) |
c906108c SS |
1027 | { |
1028 | char *bp; | |
1029 | unsigned char csum, c1, c2; | |
1030 | int c; | |
1031 | ||
1032 | while (1) | |
1033 | { | |
1034 | csum = 0; | |
1035 | ||
1036 | while (1) | |
1037 | { | |
1038 | c = readchar (); | |
1039 | if (c == '$') | |
1040 | break; | |
1041 | if (remote_debug) | |
0d62e5e8 DJ |
1042 | { |
1043 | fprintf (stderr, "[getpkt: discarding char '%c']\n", c); | |
1044 | fflush (stderr); | |
1045 | } | |
1046 | ||
c906108c SS |
1047 | if (c < 0) |
1048 | return -1; | |
1049 | } | |
1050 | ||
1051 | bp = buf; | |
1052 | while (1) | |
1053 | { | |
1054 | c = readchar (); | |
1055 | if (c < 0) | |
1056 | return -1; | |
1057 | if (c == '#') | |
1058 | break; | |
1059 | *bp++ = c; | |
1060 | csum += c; | |
1061 | } | |
1062 | *bp = 0; | |
1063 | ||
1064 | c1 = fromhex (readchar ()); | |
1065 | c2 = fromhex (readchar ()); | |
c5aa993b | 1066 | |
c906108c SS |
1067 | if (csum == (c1 << 4) + c2) |
1068 | break; | |
1069 | ||
a6f3e723 SL |
1070 | if (noack_mode) |
1071 | { | |
1072 | fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s [no-ack-mode, Bad medium?]\n", | |
1073 | (c1 << 4) + c2, csum, buf); | |
1074 | /* Not much we can do, GDB wasn't expecting an ack/nac. */ | |
1075 | break; | |
1076 | } | |
1077 | ||
c906108c SS |
1078 | fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n", |
1079 | (c1 << 4) + c2, csum, buf); | |
0f48aa01 | 1080 | write (remote_desc, "-", 1); |
c906108c SS |
1081 | } |
1082 | ||
a6f3e723 | 1083 | if (!noack_mode) |
0d62e5e8 | 1084 | { |
a6f3e723 SL |
1085 | if (remote_debug) |
1086 | { | |
1087 | fprintf (stderr, "getpkt (\"%s\"); [sending ack] \n", buf); | |
1088 | fflush (stderr); | |
1089 | } | |
c906108c | 1090 | |
a6f3e723 | 1091 | write (remote_desc, "+", 1); |
c906108c | 1092 | |
a6f3e723 SL |
1093 | if (remote_debug) |
1094 | { | |
1095 | fprintf (stderr, "[sent ack]\n"); | |
1096 | fflush (stderr); | |
1097 | } | |
0d62e5e8 | 1098 | } |
86b1f9c5 PM |
1099 | else |
1100 | { | |
1101 | if (remote_debug) | |
1102 | { | |
1103 | fprintf (stderr, "getpkt (\"%s\"); [no ack sent] \n", buf); | |
1104 | fflush (stderr); | |
1105 | } | |
1106 | } | |
0d62e5e8 | 1107 | |
c906108c SS |
1108 | return bp - buf; |
1109 | } | |
1110 | ||
1111 | void | |
fba45db2 | 1112 | write_ok (char *buf) |
c906108c SS |
1113 | { |
1114 | buf[0] = 'O'; | |
1115 | buf[1] = 'K'; | |
1116 | buf[2] = '\0'; | |
1117 | } | |
1118 | ||
1119 | void | |
fba45db2 | 1120 | write_enn (char *buf) |
c906108c | 1121 | { |
c89dc5d4 | 1122 | /* Some day, we should define the meanings of the error codes... */ |
c906108c | 1123 | buf[0] = 'E'; |
c89dc5d4 DJ |
1124 | buf[1] = '0'; |
1125 | buf[2] = '1'; | |
c906108c SS |
1126 | buf[3] = '\0'; |
1127 | } | |
1128 | ||
1129 | void | |
fa593d66 | 1130 | convert_int_to_ascii (const unsigned char *from, char *to, int n) |
c906108c SS |
1131 | { |
1132 | int nib; | |
f450004a | 1133 | int ch; |
c906108c SS |
1134 | while (n--) |
1135 | { | |
1136 | ch = *from++; | |
1137 | nib = ((ch & 0xf0) >> 4) & 0x0f; | |
1138 | *to++ = tohex (nib); | |
1139 | nib = ch & 0x0f; | |
1140 | *to++ = tohex (nib); | |
1141 | } | |
1142 | *to++ = 0; | |
1143 | } | |
1144 | ||
1145 | ||
1146 | void | |
fa593d66 | 1147 | convert_ascii_to_int (const char *from, unsigned char *to, int n) |
c906108c SS |
1148 | { |
1149 | int nib1, nib2; | |
1150 | while (n--) | |
1151 | { | |
1152 | nib1 = fromhex (*from++); | |
1153 | nib2 = fromhex (*from++); | |
1154 | *to++ = (((nib1 & 0x0f) << 4) & 0xf0) | (nib2 & 0x0f); | |
1155 | } | |
1156 | } | |
1157 | ||
1158 | static char * | |
442ea881 | 1159 | outreg (struct regcache *regcache, int regno, char *buf) |
c906108c | 1160 | { |
5c44784c JM |
1161 | if ((regno >> 12) != 0) |
1162 | *buf++ = tohex ((regno >> 12) & 0xf); | |
1163 | if ((regno >> 8) != 0) | |
1164 | *buf++ = tohex ((regno >> 8) & 0xf); | |
1165 | *buf++ = tohex ((regno >> 4) & 0xf); | |
c906108c SS |
1166 | *buf++ = tohex (regno & 0xf); |
1167 | *buf++ = ':'; | |
442ea881 | 1168 | collect_register_as_string (regcache, regno, buf); |
0d62e5e8 | 1169 | buf += 2 * register_size (regno); |
c906108c SS |
1170 | *buf++ = ';'; |
1171 | ||
1172 | return buf; | |
1173 | } | |
1174 | ||
0d62e5e8 DJ |
1175 | void |
1176 | new_thread_notify (int id) | |
1177 | { | |
1178 | char own_buf[256]; | |
1179 | ||
1180 | /* The `n' response is not yet part of the remote protocol. Do nothing. */ | |
1181 | if (1) | |
1182 | return; | |
1183 | ||
1184 | if (server_waiting == 0) | |
1185 | return; | |
1186 | ||
1187 | sprintf (own_buf, "n%x", id); | |
1188 | disable_async_io (); | |
1189 | putpkt (own_buf); | |
1190 | enable_async_io (); | |
1191 | } | |
1192 | ||
1193 | void | |
1194 | dead_thread_notify (int id) | |
1195 | { | |
1196 | char own_buf[256]; | |
1197 | ||
1198 | /* The `x' response is not yet part of the remote protocol. Do nothing. */ | |
1199 | if (1) | |
1200 | return; | |
1201 | ||
1202 | sprintf (own_buf, "x%x", id); | |
1203 | disable_async_io (); | |
1204 | putpkt (own_buf); | |
1205 | enable_async_io (); | |
1206 | } | |
1207 | ||
c906108c | 1208 | void |
95954743 | 1209 | prepare_resume_reply (char *buf, ptid_t ptid, |
5b1c542e | 1210 | struct target_waitstatus *status) |
c906108c | 1211 | { |
5b1c542e | 1212 | if (debug_threads) |
95954743 PA |
1213 | fprintf (stderr, "Writing resume reply for %s:%d\n\n", |
1214 | target_pid_to_str (ptid), status->kind); | |
c906108c | 1215 | |
5b1c542e | 1216 | switch (status->kind) |
c906108c | 1217 | { |
5b1c542e PA |
1218 | case TARGET_WAITKIND_STOPPED: |
1219 | { | |
1220 | struct thread_info *saved_inferior; | |
1221 | const char **regp; | |
442ea881 | 1222 | struct regcache *regcache; |
e013ee27 | 1223 | |
5b1c542e PA |
1224 | sprintf (buf, "T%02x", status->value.sig); |
1225 | buf += strlen (buf); | |
e013ee27 | 1226 | |
5b1c542e | 1227 | regp = gdbserver_expedite_regs; |
e013ee27 | 1228 | |
5b1c542e | 1229 | saved_inferior = current_inferior; |
e013ee27 | 1230 | |
e09875d4 | 1231 | current_inferior = find_thread_ptid (ptid); |
e013ee27 | 1232 | |
442ea881 PA |
1233 | regcache = get_thread_regcache (current_inferior, 1); |
1234 | ||
5b1c542e PA |
1235 | if (the_target->stopped_by_watchpoint != NULL |
1236 | && (*the_target->stopped_by_watchpoint) ()) | |
1237 | { | |
1238 | CORE_ADDR addr; | |
1239 | int i; | |
c906108c | 1240 | |
5b1c542e PA |
1241 | strncpy (buf, "watch:", 6); |
1242 | buf += 6; | |
0d62e5e8 | 1243 | |
5b1c542e | 1244 | addr = (*the_target->stopped_data_address) (); |
255e7678 | 1245 | |
5b1c542e PA |
1246 | /* Convert each byte of the address into two hexadecimal |
1247 | chars. Note that we take sizeof (void *) instead of | |
1248 | sizeof (addr); this is to avoid sending a 64-bit | |
1249 | address to a 32-bit GDB. */ | |
1250 | for (i = sizeof (void *) * 2; i > 0; i--) | |
1251 | *buf++ = tohex ((addr >> (i - 1) * 4) & 0xf); | |
1252 | *buf++ = ';'; | |
1253 | } | |
1254 | ||
1255 | while (*regp) | |
1256 | { | |
442ea881 | 1257 | buf = outreg (regcache, find_regno (*regp), buf); |
5b1c542e PA |
1258 | regp ++; |
1259 | } | |
5472f405 | 1260 | *buf = '\0'; |
5b1c542e PA |
1261 | |
1262 | /* Formerly, if the debugger had not used any thread features | |
1263 | we would not burden it with a thread status response. This | |
1264 | was for the benefit of GDB 4.13 and older. However, in | |
1265 | recent GDB versions the check (``if (cont_thread != 0)'') | |
1266 | does not have the desired effect because of sillyness in | |
1267 | the way that the remote protocol handles specifying a | |
1268 | thread. Since thread support relies on qSymbol support | |
1269 | anyway, assume GDB can handle threads. */ | |
1270 | ||
1271 | if (using_threads && !disable_packet_Tthread) | |
1272 | { | |
1273 | /* This if (1) ought to be unnecessary. But remote_wait | |
1274 | in GDB will claim this event belongs to inferior_ptid | |
1275 | if we do not specify a thread, and there's no way for | |
1276 | gdbserver to know what inferior_ptid is. */ | |
95954743 | 1277 | if (1 || !ptid_equal (general_thread, ptid)) |
5b1c542e | 1278 | { |
dc146f7c | 1279 | int core = -1; |
bd99dc85 PA |
1280 | /* In non-stop, don't change the general thread behind |
1281 | GDB's back. */ | |
1282 | if (!non_stop) | |
1283 | general_thread = ptid; | |
95954743 PA |
1284 | sprintf (buf, "thread:"); |
1285 | buf += strlen (buf); | |
1286 | buf = write_ptid (buf, ptid); | |
1287 | strcat (buf, ";"); | |
5b1c542e | 1288 | buf += strlen (buf); |
dc146f7c VP |
1289 | |
1290 | if (the_target->core_of_thread) | |
1291 | core = (*the_target->core_of_thread) (ptid); | |
1292 | if (core != -1) | |
1293 | { | |
1294 | sprintf (buf, "core:"); | |
1295 | buf += strlen (buf); | |
1296 | sprintf (buf, "%x", core); | |
1297 | strcat (buf, ";"); | |
1298 | buf += strlen (buf); | |
1299 | } | |
5b1c542e PA |
1300 | } |
1301 | } | |
1302 | ||
1303 | if (dlls_changed) | |
1304 | { | |
1305 | strcpy (buf, "library:;"); | |
1306 | buf += strlen (buf); | |
1307 | dlls_changed = 0; | |
1308 | } | |
1309 | ||
1310 | current_inferior = saved_inferior; | |
1311 | } | |
1312 | break; | |
1313 | case TARGET_WAITKIND_EXITED: | |
95954743 PA |
1314 | if (multi_process) |
1315 | sprintf (buf, "W%x;process:%x", | |
1316 | status->value.integer, ptid_get_pid (ptid)); | |
1317 | else | |
1318 | sprintf (buf, "W%02x", status->value.integer); | |
5b1c542e PA |
1319 | break; |
1320 | case TARGET_WAITKIND_SIGNALLED: | |
95954743 PA |
1321 | if (multi_process) |
1322 | sprintf (buf, "X%x;process:%x", | |
1323 | status->value.sig, ptid_get_pid (ptid)); | |
1324 | else | |
1325 | sprintf (buf, "X%02x", status->value.sig); | |
5b1c542e PA |
1326 | break; |
1327 | default: | |
1328 | error ("unhandled waitkind"); | |
1329 | break; | |
c906108c | 1330 | } |
c906108c SS |
1331 | } |
1332 | ||
1333 | void | |
fba45db2 | 1334 | decode_m_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr) |
c906108c SS |
1335 | { |
1336 | int i = 0, j = 0; | |
1337 | char ch; | |
1338 | *mem_addr_ptr = *len_ptr = 0; | |
1339 | ||
1340 | while ((ch = from[i++]) != ',') | |
1341 | { | |
1342 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1343 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1344 | } | |
1345 | ||
1346 | for (j = 0; j < 4; j++) | |
1347 | { | |
1348 | if ((ch = from[i++]) == 0) | |
1349 | break; | |
1350 | *len_ptr = *len_ptr << 4; | |
1351 | *len_ptr |= fromhex (ch) & 0x0f; | |
1352 | } | |
1353 | } | |
1354 | ||
1355 | void | |
fba45db2 | 1356 | decode_M_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr, |
fa593d66 | 1357 | unsigned char **to_p) |
c906108c SS |
1358 | { |
1359 | int i = 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 | while ((ch = from[i++]) != ':') | |
1370 | { | |
1371 | *len_ptr = *len_ptr << 4; | |
1372 | *len_ptr |= fromhex (ch) & 0x0f; | |
1373 | } | |
1374 | ||
fa593d66 PA |
1375 | if (*to_p == NULL) |
1376 | *to_p = xmalloc (*len_ptr); | |
1377 | ||
1378 | convert_ascii_to_int (&from[i++], *to_p, *len_ptr); | |
c906108c | 1379 | } |
2f2893d9 | 1380 | |
01f9e8fa DJ |
1381 | int |
1382 | decode_X_packet (char *from, int packet_len, CORE_ADDR *mem_addr_ptr, | |
fa593d66 | 1383 | unsigned int *len_ptr, unsigned char **to_p) |
01f9e8fa DJ |
1384 | { |
1385 | int i = 0; | |
1386 | char ch; | |
1387 | *mem_addr_ptr = *len_ptr = 0; | |
1388 | ||
1389 | while ((ch = from[i++]) != ',') | |
1390 | { | |
1391 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
1392 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
1393 | } | |
1394 | ||
1395 | while ((ch = from[i++]) != ':') | |
1396 | { | |
1397 | *len_ptr = *len_ptr << 4; | |
1398 | *len_ptr |= fromhex (ch) & 0x0f; | |
1399 | } | |
1400 | ||
fa593d66 PA |
1401 | if (*to_p == NULL) |
1402 | *to_p = xmalloc (*len_ptr); | |
1403 | ||
01f9e8fa | 1404 | if (remote_unescape_input ((const gdb_byte *) &from[i], packet_len - i, |
fa593d66 | 1405 | *to_p, *len_ptr) != *len_ptr) |
01f9e8fa DJ |
1406 | return -1; |
1407 | ||
1408 | return 0; | |
1409 | } | |
1410 | ||
0e7f50da UW |
1411 | /* Decode a qXfer write request. */ |
1412 | int | |
1413 | decode_xfer_write (char *buf, int packet_len, char **annex, CORE_ADDR *offset, | |
1414 | unsigned int *len, unsigned char *data) | |
1415 | { | |
1416 | char ch; | |
1417 | ||
1418 | /* Extract and NUL-terminate the annex. */ | |
1419 | *annex = buf; | |
1420 | while (*buf && *buf != ':') | |
1421 | buf++; | |
1422 | if (*buf == '\0') | |
1423 | return -1; | |
1424 | *buf++ = 0; | |
1425 | ||
1426 | /* Extract the offset. */ | |
1427 | *offset = 0; | |
1428 | while ((ch = *buf++) != ':') | |
1429 | { | |
1430 | *offset = *offset << 4; | |
1431 | *offset |= fromhex (ch) & 0x0f; | |
1432 | } | |
1433 | ||
1434 | /* Get encoded data. */ | |
1435 | packet_len -= buf - *annex; | |
1436 | *len = remote_unescape_input ((const gdb_byte *) buf, packet_len, | |
1437 | data, packet_len); | |
1438 | return 0; | |
1439 | } | |
1440 | ||
08388c79 DE |
1441 | /* Decode the parameters of a qSearch:memory packet. */ |
1442 | ||
1443 | int | |
1444 | decode_search_memory_packet (const char *buf, int packet_len, | |
1445 | CORE_ADDR *start_addrp, | |
1446 | CORE_ADDR *search_space_lenp, | |
1447 | gdb_byte *pattern, unsigned int *pattern_lenp) | |
1448 | { | |
1449 | const char *p = buf; | |
1450 | ||
1451 | p = decode_address_to_semicolon (start_addrp, p); | |
1452 | p = decode_address_to_semicolon (search_space_lenp, p); | |
1453 | packet_len -= p - buf; | |
1454 | *pattern_lenp = remote_unescape_input ((const gdb_byte *) p, packet_len, | |
1455 | pattern, packet_len); | |
1456 | return 0; | |
1457 | } | |
1458 | ||
95954743 PA |
1459 | static void |
1460 | free_sym_cache (struct sym_cache *sym) | |
1461 | { | |
1462 | if (sym != NULL) | |
1463 | { | |
1464 | free (sym->name); | |
1465 | free (sym); | |
1466 | } | |
1467 | } | |
1468 | ||
1469 | void | |
1470 | clear_symbol_cache (struct sym_cache **symcache_p) | |
1471 | { | |
1472 | struct sym_cache *sym, *next; | |
1473 | ||
1474 | /* Check the cache first. */ | |
1475 | for (sym = *symcache_p; sym; sym = next) | |
1476 | { | |
1477 | next = sym->next; | |
1478 | free_sym_cache (sym); | |
1479 | } | |
1480 | ||
1481 | *symcache_p = NULL; | |
1482 | } | |
1483 | ||
9836d6ea PA |
1484 | /* Get the address of NAME, and return it in ADDRP if found. if |
1485 | MAY_ASK_GDB is false, assume symbol cache misses are failures. | |
fd500816 DJ |
1486 | Returns 1 if the symbol is found, 0 if it is not, -1 on error. */ |
1487 | ||
2f2893d9 | 1488 | int |
9836d6ea | 1489 | look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb) |
2f2893d9 DJ |
1490 | { |
1491 | char own_buf[266], *p, *q; | |
1492 | int len; | |
fd500816 | 1493 | struct sym_cache *sym; |
95954743 PA |
1494 | struct process_info *proc; |
1495 | ||
1496 | proc = current_process (); | |
fd500816 DJ |
1497 | |
1498 | /* Check the cache first. */ | |
95954743 | 1499 | for (sym = proc->symbol_cache; sym; sym = sym->next) |
fd500816 DJ |
1500 | if (strcmp (name, sym->name) == 0) |
1501 | { | |
1502 | *addrp = sym->addr; | |
1503 | return 1; | |
1504 | } | |
2f2893d9 | 1505 | |
9836d6ea PA |
1506 | /* It might not be an appropriate time to look up a symbol, |
1507 | e.g. while we're trying to fetch registers. */ | |
1508 | if (!may_ask_gdb) | |
ea025f5f DJ |
1509 | return 0; |
1510 | ||
2f2893d9 DJ |
1511 | /* Send the request. */ |
1512 | strcpy (own_buf, "qSymbol:"); | |
1513 | hexify (own_buf + strlen ("qSymbol:"), name, strlen (name)); | |
1514 | if (putpkt (own_buf) < 0) | |
1515 | return -1; | |
1516 | ||
1517 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
1518 | len = getpkt (own_buf); | |
1519 | if (len < 0) | |
1520 | return -1; | |
1521 | ||
2bbe3cc1 DJ |
1522 | /* We ought to handle pretty much any packet at this point while we |
1523 | wait for the qSymbol "response". That requires re-entering the | |
1524 | main loop. For now, this is an adequate approximation; allow | |
1525 | GDB to read from memory while it figures out the address of the | |
1526 | symbol. */ | |
1527 | while (own_buf[0] == 'm') | |
1528 | { | |
1529 | CORE_ADDR mem_addr; | |
1530 | unsigned char *mem_buf; | |
1531 | unsigned int mem_len; | |
1532 | ||
1533 | decode_m_packet (&own_buf[1], &mem_addr, &mem_len); | |
bca929d3 | 1534 | mem_buf = xmalloc (mem_len); |
2bbe3cc1 DJ |
1535 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) |
1536 | convert_int_to_ascii (mem_buf, own_buf, mem_len); | |
1537 | else | |
1538 | write_enn (own_buf); | |
1539 | free (mem_buf); | |
1540 | if (putpkt (own_buf) < 0) | |
1541 | return -1; | |
1542 | len = getpkt (own_buf); | |
1543 | if (len < 0) | |
1544 | return -1; | |
1545 | } | |
1b3f6016 | 1546 | |
2f2893d9 DJ |
1547 | if (strncmp (own_buf, "qSymbol:", strlen ("qSymbol:")) != 0) |
1548 | { | |
2bbe3cc1 | 1549 | warning ("Malformed response to qSymbol, ignoring: %s\n", own_buf); |
2f2893d9 DJ |
1550 | return -1; |
1551 | } | |
1552 | ||
1553 | p = own_buf + strlen ("qSymbol:"); | |
1554 | q = p; | |
1555 | while (*q && *q != ':') | |
1556 | q++; | |
1557 | ||
1558 | /* Make sure we found a value for the symbol. */ | |
1559 | if (p == q || *q == '\0') | |
1560 | return 0; | |
1561 | ||
1562 | decode_address (addrp, p, q - p); | |
fd500816 DJ |
1563 | |
1564 | /* Save the symbol in our cache. */ | |
bca929d3 DE |
1565 | sym = xmalloc (sizeof (*sym)); |
1566 | sym->name = xstrdup (name); | |
fd500816 | 1567 | sym->addr = *addrp; |
95954743 PA |
1568 | sym->next = proc->symbol_cache; |
1569 | proc->symbol_cache = sym; | |
fd500816 | 1570 | |
2f2893d9 DJ |
1571 | return 1; |
1572 | } | |
c74d0ad8 | 1573 | |
fa593d66 PA |
1574 | /* Relocate an instruction to execute at a different address. OLDLOC |
1575 | is the address in the inferior memory where the instruction to | |
1576 | relocate is currently at. On input, TO points to the destination | |
1577 | where we want the instruction to be copied (and possibly adjusted) | |
1578 | to. On output, it points to one past the end of the resulting | |
1579 | instruction(s). The effect of executing the instruction at TO | |
1580 | shall be the same as if executing it at FROM. For example, call | |
1581 | instructions that implicitly push the return address on the stack | |
1582 | should be adjusted to return to the instruction after OLDLOC; | |
1583 | relative branches, and other PC-relative instructions need the | |
1584 | offset adjusted; etc. Returns 0 on success, -1 on failure. */ | |
1585 | ||
1586 | int | |
1587 | relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc) | |
1588 | { | |
1589 | char own_buf[266]; | |
1590 | int len; | |
1591 | ULONGEST written = 0; | |
1592 | ||
1593 | /* Send the request. */ | |
1594 | strcpy (own_buf, "qRelocInsn:"); | |
1595 | sprintf (own_buf, "qRelocInsn:%s;%s", paddress (oldloc), | |
1596 | paddress (*to)); | |
1597 | if (putpkt (own_buf) < 0) | |
1598 | return -1; | |
1599 | ||
1600 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
1601 | len = getpkt (own_buf); | |
1602 | if (len < 0) | |
1603 | return -1; | |
1604 | ||
1605 | /* We ought to handle pretty much any packet at this point while we | |
1606 | wait for the qRelocInsn "response". That requires re-entering | |
1607 | the main loop. For now, this is an adequate approximation; allow | |
1608 | GDB to access memory. */ | |
1609 | while (own_buf[0] == 'm' || own_buf[0] == 'M' || own_buf[0] == 'X') | |
1610 | { | |
1611 | CORE_ADDR mem_addr; | |
1612 | unsigned char *mem_buf = NULL; | |
1613 | unsigned int mem_len; | |
1614 | ||
1615 | if (own_buf[0] == 'm') | |
1616 | { | |
1617 | decode_m_packet (&own_buf[1], &mem_addr, &mem_len); | |
1618 | mem_buf = xmalloc (mem_len); | |
1619 | if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) | |
1620 | convert_int_to_ascii (mem_buf, own_buf, mem_len); | |
1621 | else | |
1622 | write_enn (own_buf); | |
1623 | } | |
1624 | else if (own_buf[0] == 'X') | |
1625 | { | |
1626 | if (decode_X_packet (&own_buf[1], len - 1, &mem_addr, | |
1627 | &mem_len, &mem_buf) < 0 | |
1628 | || write_inferior_memory (mem_addr, mem_buf, mem_len) != 0) | |
1629 | write_enn (own_buf); | |
1630 | else | |
1631 | write_ok (own_buf); | |
1632 | } | |
1633 | else | |
1634 | { | |
1635 | decode_M_packet (&own_buf[1], &mem_addr, &mem_len, &mem_buf); | |
1636 | if (write_inferior_memory (mem_addr, mem_buf, mem_len) == 0) | |
1637 | write_ok (own_buf); | |
1638 | else | |
1639 | write_enn (own_buf); | |
1640 | } | |
1641 | free (mem_buf); | |
1642 | if (putpkt (own_buf) < 0) | |
1643 | return -1; | |
1644 | len = getpkt (own_buf); | |
1645 | if (len < 0) | |
1646 | return -1; | |
1647 | } | |
1648 | ||
1649 | if (own_buf[0] == 'E') | |
1650 | { | |
1651 | warning ("An error occurred while relocating an instruction: %s\n", | |
1652 | own_buf); | |
1653 | return -1; | |
1654 | } | |
1655 | ||
1656 | if (strncmp (own_buf, "qRelocInsn:", strlen ("qRelocInsn:")) != 0) | |
1657 | { | |
1658 | warning ("Malformed response to qRelocInsn, ignoring: %s\n", | |
1659 | own_buf); | |
1660 | return -1; | |
1661 | } | |
1662 | ||
1663 | unpack_varlen_hex (own_buf + strlen ("qRelocInsn:"), &written); | |
1664 | ||
1665 | *to += written; | |
1666 | return 0; | |
1667 | } | |
1668 | ||
c74d0ad8 | 1669 | void |
bce7165d | 1670 | monitor_output (const char *msg) |
c74d0ad8 | 1671 | { |
bca929d3 | 1672 | char *buf = xmalloc (strlen (msg) * 2 + 2); |
c74d0ad8 DJ |
1673 | |
1674 | buf[0] = 'O'; | |
1675 | hexify (buf + 1, msg, 0); | |
1676 | ||
1677 | putpkt (buf); | |
1678 | free (buf); | |
1679 | } | |
255e7678 DJ |
1680 | |
1681 | /* Return a malloc allocated string with special characters from TEXT | |
1682 | replaced by entity references. */ | |
1683 | ||
1684 | char * | |
1685 | xml_escape_text (const char *text) | |
1686 | { | |
1687 | char *result; | |
1688 | int i, special; | |
1689 | ||
1690 | /* Compute the length of the result. */ | |
1691 | for (i = 0, special = 0; text[i] != '\0'; i++) | |
1692 | switch (text[i]) | |
1693 | { | |
1694 | case '\'': | |
1695 | case '\"': | |
1696 | special += 5; | |
1697 | break; | |
1698 | case '&': | |
1699 | special += 4; | |
1700 | break; | |
1701 | case '<': | |
1702 | case '>': | |
1703 | special += 3; | |
1704 | break; | |
1705 | default: | |
1706 | break; | |
1707 | } | |
1708 | ||
1709 | /* Expand the result. */ | |
bca929d3 | 1710 | result = xmalloc (i + special + 1); |
255e7678 DJ |
1711 | for (i = 0, special = 0; text[i] != '\0'; i++) |
1712 | switch (text[i]) | |
1713 | { | |
1714 | case '\'': | |
1715 | strcpy (result + i + special, "'"); | |
1716 | special += 5; | |
1717 | break; | |
1718 | case '\"': | |
1719 | strcpy (result + i + special, """); | |
1720 | special += 5; | |
1721 | break; | |
1722 | case '&': | |
1723 | strcpy (result + i + special, "&"); | |
1724 | special += 4; | |
1725 | break; | |
1726 | case '<': | |
1727 | strcpy (result + i + special, "<"); | |
1728 | special += 3; | |
1729 | break; | |
1730 | case '>': | |
1731 | strcpy (result + i + special, ">"); | |
1732 | special += 3; | |
1733 | break; | |
1734 | default: | |
1735 | result[i + special] = text[i]; | |
1736 | break; | |
1737 | } | |
1738 | result[i + special] = '\0'; | |
1739 | ||
1740 | return result; | |
1741 | } | |
07e059b5 VP |
1742 | |
1743 | void | |
1744 | buffer_grow (struct buffer *buffer, const char *data, size_t size) | |
1745 | { | |
1746 | char *new_buffer; | |
1747 | size_t new_buffer_size; | |
1748 | ||
1749 | if (size == 0) | |
1750 | return; | |
1751 | ||
1752 | new_buffer_size = buffer->buffer_size; | |
1753 | ||
1754 | if (new_buffer_size == 0) | |
1755 | new_buffer_size = 1; | |
1756 | ||
1757 | while (buffer->used_size + size > new_buffer_size) | |
1758 | new_buffer_size *= 2; | |
1759 | new_buffer = realloc (buffer->buffer, new_buffer_size); | |
1760 | if (!new_buffer) | |
1761 | abort (); | |
1762 | memcpy (new_buffer + buffer->used_size, data, size); | |
1763 | buffer->buffer = new_buffer; | |
1764 | buffer->buffer_size = new_buffer_size; | |
1765 | buffer->used_size += size; | |
1766 | } | |
1767 | ||
1768 | void | |
1769 | buffer_free (struct buffer *buffer) | |
1770 | { | |
1771 | if (!buffer) | |
1772 | return; | |
1773 | ||
1774 | free (buffer->buffer); | |
1775 | buffer->buffer = NULL; | |
1776 | buffer->buffer_size = 0; | |
1777 | buffer->used_size = 0; | |
1778 | } | |
1779 | ||
1780 | void | |
1781 | buffer_init (struct buffer *buffer) | |
1782 | { | |
1783 | memset (buffer, 0, sizeof (*buffer)); | |
1784 | } | |
1785 | ||
1786 | char* | |
1787 | buffer_finish (struct buffer *buffer) | |
1788 | { | |
1789 | char *ret = buffer->buffer; | |
1790 | buffer->buffer = NULL; | |
1791 | buffer->buffer_size = 0; | |
1792 | buffer->used_size = 0; | |
1793 | return ret; | |
1794 | } | |
1795 | ||
1796 | void | |
1797 | buffer_xml_printf (struct buffer *buffer, const char *format, ...) | |
1798 | { | |
1799 | va_list ap; | |
1800 | const char *f; | |
1801 | const char *prev; | |
1802 | int percent = 0; | |
1803 | ||
1804 | va_start (ap, format); | |
1805 | ||
1806 | prev = format; | |
1807 | for (f = format; *f; f++) | |
1808 | { | |
1809 | if (percent) | |
1810 | { | |
1b3f6016 PA |
1811 | switch (*f) |
1812 | { | |
1813 | case 's': | |
1814 | { | |
1815 | char *p; | |
1816 | char *a = va_arg (ap, char *); | |
1817 | buffer_grow (buffer, prev, f - prev - 1); | |
1818 | p = xml_escape_text (a); | |
1819 | buffer_grow_str (buffer, p); | |
1820 | free (p); | |
1821 | prev = f + 1; | |
1822 | } | |
1823 | break; | |
dc146f7c VP |
1824 | case 'd': |
1825 | { | |
1826 | int i = va_arg (ap, int); | |
1827 | char b[sizeof ("4294967295")]; | |
1828 | ||
1829 | buffer_grow (buffer, prev, f - prev - 1); | |
1830 | sprintf (b, "%d", i); | |
1831 | buffer_grow_str (buffer, b); | |
1832 | prev = f + 1; | |
1833 | } | |
1b3f6016 PA |
1834 | } |
1835 | percent = 0; | |
07e059b5 VP |
1836 | } |
1837 | else if (*f == '%') | |
1838 | percent = 1; | |
1839 | } | |
1840 | ||
1841 | buffer_grow_str (buffer, prev); | |
1842 | va_end (ap); | |
1843 | } |