Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote utility routines for the remote server for GDB. |
0a30fbc4 DJ |
2 | Copyright 1986, 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
3 | 2002 | |
b6ba6518 | 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 | |
10 | the Free Software Foundation; either version 2 of the License, or | |
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 JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | #include "server.h" | |
24 | #include "terminal.h" | |
25 | #include <stdio.h> | |
26 | #include <string.h> | |
27 | #include <sys/ioctl.h> | |
28 | #include <sys/file.h> | |
29 | #include <netinet/in.h> | |
30 | #include <sys/socket.h> | |
31 | #include <netdb.h> | |
32 | #include <netinet/tcp.h> | |
33 | #include <sys/ioctl.h> | |
34 | #include <signal.h> | |
35 | #include <fcntl.h> | |
cf30a8e1 C |
36 | #include <sys/time.h> |
37 | #include <unistd.h> | |
0729219d | 38 | #include <arpa/inet.h> |
c906108c SS |
39 | |
40 | int remote_debug = 0; | |
03863182 | 41 | struct ui_file *gdb_stdlog; |
c906108c SS |
42 | |
43 | static int remote_desc; | |
44 | ||
0d62e5e8 DJ |
45 | /* FIXME headerize? */ |
46 | extern int using_threads; | |
47 | extern int debug_threads; | |
48 | ||
a9fa9f7d DJ |
49 | extern int signal_pid; |
50 | ||
c906108c SS |
51 | /* Open a connection to a remote debugger. |
52 | NAME is the filename used for communication. */ | |
53 | ||
54 | void | |
fba45db2 | 55 | remote_open (char *name) |
c906108c SS |
56 | { |
57 | int save_fcntl_flags; | |
e641a1ca | 58 | |
c906108c SS |
59 | if (!strchr (name, ':')) |
60 | { | |
61 | remote_desc = open (name, O_RDWR); | |
62 | if (remote_desc < 0) | |
63 | perror_with_name ("Could not open remote device"); | |
64 | ||
65 | #ifdef HAVE_TERMIOS | |
66 | { | |
67 | struct termios termios; | |
c5aa993b | 68 | tcgetattr (remote_desc, &termios); |
c906108c SS |
69 | |
70 | termios.c_iflag = 0; | |
71 | termios.c_oflag = 0; | |
72 | termios.c_lflag = 0; | |
c5aa993b | 73 | termios.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 74 | termios.c_cflag |= CLOCAL | CS8; |
d0608e50 | 75 | termios.c_cc[VMIN] = 1; |
c906108c SS |
76 | termios.c_cc[VTIME] = 0; |
77 | ||
c5aa993b | 78 | tcsetattr (remote_desc, TCSANOW, &termios); |
c906108c SS |
79 | } |
80 | #endif | |
81 | ||
82 | #ifdef HAVE_TERMIO | |
83 | { | |
84 | struct termio termio; | |
85 | ioctl (remote_desc, TCGETA, &termio); | |
86 | ||
87 | termio.c_iflag = 0; | |
88 | termio.c_oflag = 0; | |
89 | termio.c_lflag = 0; | |
c5aa993b | 90 | termio.c_cflag &= ~(CSIZE | PARENB); |
c906108c | 91 | termio.c_cflag |= CLOCAL | CS8; |
d0608e50 | 92 | termio.c_cc[VMIN] = 1; |
c906108c SS |
93 | termio.c_cc[VTIME] = 0; |
94 | ||
95 | ioctl (remote_desc, TCSETA, &termio); | |
96 | } | |
97 | #endif | |
98 | ||
99 | #ifdef HAVE_SGTTY | |
100 | { | |
101 | struct sgttyb sg; | |
102 | ||
103 | ioctl (remote_desc, TIOCGETP, &sg); | |
104 | sg.sg_flags = RAW; | |
105 | ioctl (remote_desc, TIOCSETP, &sg); | |
106 | } | |
107 | #endif | |
108 | ||
e641a1ca | 109 | fprintf (stderr, "Remote debugging using %s\n", name); |
c906108c SS |
110 | } |
111 | else | |
112 | { | |
113 | char *port_str; | |
114 | int port; | |
115 | struct sockaddr_in sockaddr; | |
116 | int tmp; | |
c906108c SS |
117 | int tmp_desc; |
118 | ||
119 | port_str = strchr (name, ':'); | |
120 | ||
121 | port = atoi (port_str + 1); | |
122 | ||
123 | tmp_desc = socket (PF_INET, SOCK_STREAM, 0); | |
124 | if (tmp_desc < 0) | |
125 | perror_with_name ("Can't open socket"); | |
126 | ||
127 | /* Allow rapid reuse of this port. */ | |
128 | tmp = 1; | |
c5aa993b JM |
129 | setsockopt (tmp_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, |
130 | sizeof (tmp)); | |
c906108c SS |
131 | |
132 | sockaddr.sin_family = PF_INET; | |
c5aa993b | 133 | sockaddr.sin_port = htons (port); |
c906108c SS |
134 | sockaddr.sin_addr.s_addr = INADDR_ANY; |
135 | ||
c5aa993b | 136 | if (bind (tmp_desc, (struct sockaddr *) &sockaddr, sizeof (sockaddr)) |
c906108c SS |
137 | || listen (tmp_desc, 1)) |
138 | perror_with_name ("Can't bind address"); | |
139 | ||
140 | tmp = sizeof (sockaddr); | |
c5aa993b | 141 | remote_desc = accept (tmp_desc, (struct sockaddr *) &sockaddr, &tmp); |
c906108c SS |
142 | if (remote_desc == -1) |
143 | perror_with_name ("Accept failed"); | |
144 | ||
c906108c SS |
145 | /* Enable TCP keep alive process. */ |
146 | tmp = 1; | |
c5aa993b | 147 | setsockopt (tmp_desc, SOL_SOCKET, SO_KEEPALIVE, (char *) &tmp, sizeof (tmp)); |
c906108c SS |
148 | |
149 | /* Tell TCP not to delay small packets. This greatly speeds up | |
c5aa993b | 150 | interactive response. */ |
c906108c | 151 | tmp = 1; |
373fe97f | 152 | setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY, |
c5aa993b | 153 | (char *) &tmp, sizeof (tmp)); |
c906108c SS |
154 | |
155 | close (tmp_desc); /* No longer need this */ | |
156 | ||
c5aa993b JM |
157 | signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply |
158 | exits when the remote side dies. */ | |
e641a1ca ML |
159 | |
160 | /* Convert IP address to string. */ | |
161 | fprintf (stderr, "Remote debugging from host %s\n", | |
162 | inet_ntoa (sockaddr.sin_addr)); | |
c906108c SS |
163 | } |
164 | ||
165 | #if defined(F_SETFL) && defined (FASYNC) | |
166 | save_fcntl_flags = fcntl (remote_desc, F_GETFL, 0); | |
167 | fcntl (remote_desc, F_SETFL, save_fcntl_flags | FASYNC); | |
cf30a8e1 C |
168 | #if defined (F_SETOWN) |
169 | fcntl (remote_desc, F_SETOWN, getpid ()); | |
94dfea5d | 170 | #endif |
cf30a8e1 | 171 | #endif |
c906108c | 172 | disable_async_io (); |
c906108c SS |
173 | } |
174 | ||
175 | void | |
fba45db2 | 176 | remote_close (void) |
c906108c SS |
177 | { |
178 | close (remote_desc); | |
179 | } | |
180 | ||
181 | /* Convert hex digit A to a number. */ | |
182 | ||
183 | static int | |
fba45db2 | 184 | fromhex (int a) |
c906108c SS |
185 | { |
186 | if (a >= '0' && a <= '9') | |
187 | return a - '0'; | |
188 | else if (a >= 'a' && a <= 'f') | |
189 | return a - 'a' + 10; | |
190 | else | |
191 | error ("Reply contains invalid hex digit"); | |
0a30fbc4 | 192 | return 0; |
c906108c SS |
193 | } |
194 | ||
ce3a066d DJ |
195 | int |
196 | unhexify (char *bin, const char *hex, int count) | |
197 | { | |
198 | int i; | |
199 | ||
200 | for (i = 0; i < count; i++) | |
201 | { | |
202 | if (hex[0] == 0 || hex[1] == 0) | |
203 | { | |
204 | /* Hex string is short, or of uneven length. | |
205 | Return the count that has been converted so far. */ | |
206 | return i; | |
207 | } | |
208 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
209 | hex += 2; | |
210 | } | |
211 | return i; | |
212 | } | |
213 | ||
2f2893d9 DJ |
214 | static void |
215 | decode_address (CORE_ADDR *addrp, const char *start, int len) | |
216 | { | |
217 | CORE_ADDR addr; | |
218 | char ch; | |
219 | int i; | |
220 | ||
221 | addr = 0; | |
222 | for (i = 0; i < len; i++) | |
223 | { | |
224 | ch = start[i]; | |
225 | addr = addr << 4; | |
226 | addr = addr | (fromhex (ch) & 0x0f); | |
227 | } | |
228 | *addrp = addr; | |
229 | } | |
230 | ||
c906108c SS |
231 | /* Convert number NIB to a hex digit. */ |
232 | ||
233 | static int | |
fba45db2 | 234 | tohex (int nib) |
c906108c SS |
235 | { |
236 | if (nib < 10) | |
237 | return '0' + nib; | |
238 | else | |
239 | return 'a' + nib - 10; | |
240 | } | |
241 | ||
ce3a066d DJ |
242 | int |
243 | hexify (char *hex, const char *bin, int count) | |
244 | { | |
245 | int i; | |
246 | ||
247 | /* May use a length, or a nul-terminated string as input. */ | |
248 | if (count == 0) | |
249 | count = strlen (bin); | |
250 | ||
251 | for (i = 0; i < count; i++) | |
252 | { | |
253 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
254 | *hex++ = tohex (*bin++ & 0xf); | |
255 | } | |
256 | *hex = 0; | |
257 | return i; | |
258 | } | |
259 | ||
c906108c SS |
260 | /* Send a packet to the remote machine, with error checking. |
261 | The data of the packet is in BUF. Returns >= 0 on success, -1 otherwise. */ | |
262 | ||
263 | int | |
fba45db2 | 264 | putpkt (char *buf) |
c906108c SS |
265 | { |
266 | int i; | |
267 | unsigned char csum = 0; | |
0a30fbc4 | 268 | char *buf2; |
c906108c SS |
269 | char buf3[1]; |
270 | int cnt = strlen (buf); | |
271 | char *p; | |
272 | ||
0a30fbc4 DJ |
273 | buf2 = malloc (PBUFSIZ); |
274 | ||
c906108c SS |
275 | /* Copy the packet into buffer BUF2, encapsulating it |
276 | and giving it a checksum. */ | |
277 | ||
278 | p = buf2; | |
279 | *p++ = '$'; | |
280 | ||
281 | for (i = 0; i < cnt; i++) | |
282 | { | |
283 | csum += buf[i]; | |
284 | *p++ = buf[i]; | |
285 | } | |
286 | *p++ = '#'; | |
287 | *p++ = tohex ((csum >> 4) & 0xf); | |
288 | *p++ = tohex (csum & 0xf); | |
289 | ||
290 | *p = '\0'; | |
291 | ||
292 | /* Send it over and over until we get a positive ack. */ | |
293 | ||
294 | do | |
295 | { | |
296 | int cc; | |
297 | ||
298 | if (write (remote_desc, buf2, p - buf2) != p - buf2) | |
299 | { | |
300 | perror ("putpkt(write)"); | |
301 | return -1; | |
302 | } | |
303 | ||
304 | if (remote_debug) | |
0d62e5e8 DJ |
305 | { |
306 | fprintf (stderr, "putpkt (\"%s\"); [looking for ack]\n", buf2); | |
307 | fflush (stderr); | |
308 | } | |
c906108c SS |
309 | cc = read (remote_desc, buf3, 1); |
310 | if (remote_debug) | |
0d62e5e8 DJ |
311 | { |
312 | fprintf (stderr, "[received '%c' (0x%x)]\n", buf3[0], buf3[0]); | |
313 | fflush (stderr); | |
314 | } | |
315 | ||
c906108c SS |
316 | if (cc <= 0) |
317 | { | |
318 | if (cc == 0) | |
319 | fprintf (stderr, "putpkt(read): Got EOF\n"); | |
320 | else | |
321 | perror ("putpkt(read)"); | |
322 | ||
0a30fbc4 | 323 | free (buf2); |
c906108c SS |
324 | return -1; |
325 | } | |
0d62e5e8 DJ |
326 | |
327 | /* Check for an input interrupt while we're here. */ | |
328 | if (buf3[0] == '\003') | |
a9fa9f7d | 329 | kill (signal_pid, SIGINT); |
c906108c SS |
330 | } |
331 | while (buf3[0] != '+'); | |
332 | ||
0a30fbc4 | 333 | free (buf2); |
c906108c SS |
334 | return 1; /* Success! */ |
335 | } | |
336 | ||
337 | /* Come here when we get an input interrupt from the remote side. This | |
338 | interrupt should only be active while we are waiting for the child to do | |
339 | something. About the only thing that should come through is a ^C, which | |
340 | will cause us to send a SIGINT to the child. */ | |
341 | ||
342 | static void | |
0a30fbc4 | 343 | input_interrupt (int unused) |
c906108c | 344 | { |
cf30a8e1 C |
345 | fd_set readset; |
346 | struct timeval immediate = { 0, 0 }; | |
c906108c | 347 | |
cf30a8e1 C |
348 | /* Protect against spurious interrupts. This has been observed to |
349 | be a problem under NetBSD 1.4 and 1.5. */ | |
c906108c | 350 | |
cf30a8e1 C |
351 | FD_ZERO (&readset); |
352 | FD_SET (remote_desc, &readset); | |
353 | if (select (remote_desc + 1, &readset, 0, 0, &immediate) > 0) | |
c906108c | 354 | { |
cf30a8e1 C |
355 | int cc; |
356 | char c; | |
357 | ||
358 | cc = read (remote_desc, &c, 1); | |
c906108c | 359 | |
cf30a8e1 C |
360 | if (cc != 1 || c != '\003') |
361 | { | |
362 | fprintf (stderr, "input_interrupt, cc = %d c = %d\n", cc, c); | |
363 | return; | |
364 | } | |
365 | ||
a9fa9f7d | 366 | kill (signal_pid, SIGINT); |
cf30a8e1 | 367 | } |
c906108c SS |
368 | } |
369 | ||
370 | void | |
fba45db2 | 371 | enable_async_io (void) |
c906108c SS |
372 | { |
373 | signal (SIGIO, input_interrupt); | |
374 | } | |
375 | ||
376 | void | |
fba45db2 | 377 | disable_async_io (void) |
c906108c SS |
378 | { |
379 | signal (SIGIO, SIG_IGN); | |
380 | } | |
381 | ||
382 | /* Returns next char from remote GDB. -1 if error. */ | |
383 | ||
384 | static int | |
fba45db2 | 385 | readchar (void) |
c906108c SS |
386 | { |
387 | static char buf[BUFSIZ]; | |
388 | static int bufcnt = 0; | |
389 | static char *bufp; | |
390 | ||
391 | if (bufcnt-- > 0) | |
392 | return *bufp++ & 0x7f; | |
393 | ||
394 | bufcnt = read (remote_desc, buf, sizeof (buf)); | |
395 | ||
396 | if (bufcnt <= 0) | |
397 | { | |
398 | if (bufcnt == 0) | |
399 | fprintf (stderr, "readchar: Got EOF\n"); | |
400 | else | |
401 | perror ("readchar"); | |
402 | ||
403 | return -1; | |
404 | } | |
405 | ||
406 | bufp = buf; | |
407 | bufcnt--; | |
408 | return *bufp++ & 0x7f; | |
409 | } | |
410 | ||
411 | /* Read a packet from the remote machine, with error checking, | |
412 | and store it in BUF. Returns length of packet, or negative if error. */ | |
413 | ||
414 | int | |
fba45db2 | 415 | getpkt (char *buf) |
c906108c SS |
416 | { |
417 | char *bp; | |
418 | unsigned char csum, c1, c2; | |
419 | int c; | |
420 | ||
421 | while (1) | |
422 | { | |
423 | csum = 0; | |
424 | ||
425 | while (1) | |
426 | { | |
427 | c = readchar (); | |
428 | if (c == '$') | |
429 | break; | |
430 | if (remote_debug) | |
0d62e5e8 DJ |
431 | { |
432 | fprintf (stderr, "[getpkt: discarding char '%c']\n", c); | |
433 | fflush (stderr); | |
434 | } | |
435 | ||
c906108c SS |
436 | if (c < 0) |
437 | return -1; | |
438 | } | |
439 | ||
440 | bp = buf; | |
441 | while (1) | |
442 | { | |
443 | c = readchar (); | |
444 | if (c < 0) | |
445 | return -1; | |
446 | if (c == '#') | |
447 | break; | |
448 | *bp++ = c; | |
449 | csum += c; | |
450 | } | |
451 | *bp = 0; | |
452 | ||
453 | c1 = fromhex (readchar ()); | |
454 | c2 = fromhex (readchar ()); | |
c5aa993b | 455 | |
c906108c SS |
456 | if (csum == (c1 << 4) + c2) |
457 | break; | |
458 | ||
459 | fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n", | |
460 | (c1 << 4) + c2, csum, buf); | |
461 | write (remote_desc, "-", 1); | |
462 | } | |
463 | ||
464 | if (remote_debug) | |
0d62e5e8 DJ |
465 | { |
466 | fprintf (stderr, "getpkt (\"%s\"); [sending ack] \n", buf); | |
467 | fflush (stderr); | |
468 | } | |
c906108c SS |
469 | |
470 | write (remote_desc, "+", 1); | |
471 | ||
472 | if (remote_debug) | |
0d62e5e8 DJ |
473 | { |
474 | fprintf (stderr, "[sent ack]\n"); | |
475 | fflush (stderr); | |
476 | } | |
477 | ||
c906108c SS |
478 | return bp - buf; |
479 | } | |
480 | ||
481 | void | |
fba45db2 | 482 | write_ok (char *buf) |
c906108c SS |
483 | { |
484 | buf[0] = 'O'; | |
485 | buf[1] = 'K'; | |
486 | buf[2] = '\0'; | |
487 | } | |
488 | ||
489 | void | |
fba45db2 | 490 | write_enn (char *buf) |
c906108c SS |
491 | { |
492 | buf[0] = 'E'; | |
493 | buf[1] = 'N'; | |
494 | buf[2] = 'N'; | |
495 | buf[3] = '\0'; | |
496 | } | |
497 | ||
498 | void | |
fba45db2 | 499 | convert_int_to_ascii (char *from, char *to, int n) |
c906108c SS |
500 | { |
501 | int nib; | |
502 | char ch; | |
503 | while (n--) | |
504 | { | |
505 | ch = *from++; | |
506 | nib = ((ch & 0xf0) >> 4) & 0x0f; | |
507 | *to++ = tohex (nib); | |
508 | nib = ch & 0x0f; | |
509 | *to++ = tohex (nib); | |
510 | } | |
511 | *to++ = 0; | |
512 | } | |
513 | ||
514 | ||
515 | void | |
fba45db2 | 516 | convert_ascii_to_int (char *from, char *to, int n) |
c906108c SS |
517 | { |
518 | int nib1, nib2; | |
519 | while (n--) | |
520 | { | |
521 | nib1 = fromhex (*from++); | |
522 | nib2 = fromhex (*from++); | |
523 | *to++ = (((nib1 & 0x0f) << 4) & 0xf0) | (nib2 & 0x0f); | |
524 | } | |
525 | } | |
526 | ||
527 | static char * | |
fba45db2 | 528 | outreg (int regno, char *buf) |
c906108c | 529 | { |
5c44784c JM |
530 | if ((regno >> 12) != 0) |
531 | *buf++ = tohex ((regno >> 12) & 0xf); | |
532 | if ((regno >> 8) != 0) | |
533 | *buf++ = tohex ((regno >> 8) & 0xf); | |
534 | *buf++ = tohex ((regno >> 4) & 0xf); | |
c906108c SS |
535 | *buf++ = tohex (regno & 0xf); |
536 | *buf++ = ':'; | |
0d62e5e8 DJ |
537 | collect_register_as_string (regno, buf); |
538 | buf += 2 * register_size (regno); | |
c906108c SS |
539 | *buf++ = ';'; |
540 | ||
541 | return buf; | |
542 | } | |
543 | ||
0d62e5e8 DJ |
544 | void |
545 | new_thread_notify (int id) | |
546 | { | |
547 | char own_buf[256]; | |
548 | ||
549 | /* The `n' response is not yet part of the remote protocol. Do nothing. */ | |
550 | if (1) | |
551 | return; | |
552 | ||
553 | if (server_waiting == 0) | |
554 | return; | |
555 | ||
556 | sprintf (own_buf, "n%x", id); | |
557 | disable_async_io (); | |
558 | putpkt (own_buf); | |
559 | enable_async_io (); | |
560 | } | |
561 | ||
562 | void | |
563 | dead_thread_notify (int id) | |
564 | { | |
565 | char own_buf[256]; | |
566 | ||
567 | /* The `x' response is not yet part of the remote protocol. Do nothing. */ | |
568 | if (1) | |
569 | return; | |
570 | ||
571 | sprintf (own_buf, "x%x", id); | |
572 | disable_async_io (); | |
573 | putpkt (own_buf); | |
574 | enable_async_io (); | |
575 | } | |
576 | ||
c906108c | 577 | void |
fba45db2 | 578 | prepare_resume_reply (char *buf, char status, unsigned char signo) |
c906108c | 579 | { |
0e98d0a7 | 580 | int nib, sig; |
c906108c SS |
581 | |
582 | *buf++ = status; | |
583 | ||
0e98d0a7 DJ |
584 | sig = (int)target_signal_from_host (signo); |
585 | ||
586 | nib = ((sig & 0xf0) >> 4); | |
c906108c | 587 | *buf++ = tohex (nib); |
0e98d0a7 | 588 | nib = sig & 0x0f; |
c906108c SS |
589 | *buf++ = tohex (nib); |
590 | ||
591 | if (status == 'T') | |
592 | { | |
0a30fbc4 DJ |
593 | const char **regp = gdbserver_expedite_regs; |
594 | while (*regp) | |
5c44784c | 595 | { |
0a30fbc4 DJ |
596 | buf = outreg (find_regno (*regp), buf); |
597 | regp ++; | |
5c44784c | 598 | } |
c906108c | 599 | |
0d62e5e8 DJ |
600 | /* Formerly, if the debugger had not used any thread features we would not |
601 | burden it with a thread status response. This was for the benefit of | |
602 | GDB 4.13 and older. However, in recent GDB versions the check | |
603 | (``if (cont_thread != 0)'') does not have the desired effect because of | |
604 | sillyness in the way that the remote protocol handles specifying a thread. | |
605 | Since thread support relies on qSymbol support anyway, assume GDB can handle | |
606 | threads. */ | |
607 | ||
608 | if (using_threads) | |
c906108c | 609 | { |
0d62e5e8 DJ |
610 | /* FIXME right place to set this? */ |
611 | thread_from_wait = ((struct inferior_list_entry *)current_inferior)->id; | |
612 | if (debug_threads) | |
613 | fprintf (stderr, "Writing resume reply for %d\n\n", thread_from_wait); | |
c906108c SS |
614 | if (old_thread_from_wait != thread_from_wait) |
615 | { | |
0d62e5e8 | 616 | general_thread = thread_from_wait; |
c906108c SS |
617 | sprintf (buf, "thread:%x;", thread_from_wait); |
618 | buf += strlen (buf); | |
619 | old_thread_from_wait = thread_from_wait; | |
620 | } | |
621 | } | |
622 | } | |
623 | /* For W and X, we're done. */ | |
624 | *buf++ = 0; | |
625 | } | |
626 | ||
627 | void | |
fba45db2 | 628 | decode_m_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr) |
c906108c SS |
629 | { |
630 | int i = 0, j = 0; | |
631 | char ch; | |
632 | *mem_addr_ptr = *len_ptr = 0; | |
633 | ||
634 | while ((ch = from[i++]) != ',') | |
635 | { | |
636 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
637 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
638 | } | |
639 | ||
640 | for (j = 0; j < 4; j++) | |
641 | { | |
642 | if ((ch = from[i++]) == 0) | |
643 | break; | |
644 | *len_ptr = *len_ptr << 4; | |
645 | *len_ptr |= fromhex (ch) & 0x0f; | |
646 | } | |
647 | } | |
648 | ||
649 | void | |
fba45db2 KB |
650 | decode_M_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr, |
651 | char *to) | |
c906108c SS |
652 | { |
653 | int i = 0; | |
654 | char ch; | |
655 | *mem_addr_ptr = *len_ptr = 0; | |
656 | ||
657 | while ((ch = from[i++]) != ',') | |
658 | { | |
659 | *mem_addr_ptr = *mem_addr_ptr << 4; | |
660 | *mem_addr_ptr |= fromhex (ch) & 0x0f; | |
661 | } | |
662 | ||
663 | while ((ch = from[i++]) != ':') | |
664 | { | |
665 | *len_ptr = *len_ptr << 4; | |
666 | *len_ptr |= fromhex (ch) & 0x0f; | |
667 | } | |
668 | ||
669 | convert_ascii_to_int (&from[i++], to, *len_ptr); | |
670 | } | |
2f2893d9 DJ |
671 | |
672 | int | |
673 | look_up_one_symbol (const char *name, CORE_ADDR *addrp) | |
674 | { | |
675 | char own_buf[266], *p, *q; | |
676 | int len; | |
677 | ||
678 | /* Send the request. */ | |
679 | strcpy (own_buf, "qSymbol:"); | |
680 | hexify (own_buf + strlen ("qSymbol:"), name, strlen (name)); | |
681 | if (putpkt (own_buf) < 0) | |
682 | return -1; | |
683 | ||
684 | /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ | |
685 | len = getpkt (own_buf); | |
686 | if (len < 0) | |
687 | return -1; | |
688 | ||
689 | if (strncmp (own_buf, "qSymbol:", strlen ("qSymbol:")) != 0) | |
690 | { | |
691 | /* Malformed response. */ | |
692 | if (remote_debug) | |
0d62e5e8 DJ |
693 | { |
694 | fprintf (stderr, "Malformed response to qSymbol, ignoring.\n"); | |
695 | fflush (stderr); | |
696 | } | |
697 | ||
2f2893d9 DJ |
698 | return -1; |
699 | } | |
700 | ||
701 | p = own_buf + strlen ("qSymbol:"); | |
702 | q = p; | |
703 | while (*q && *q != ':') | |
704 | q++; | |
705 | ||
706 | /* Make sure we found a value for the symbol. */ | |
707 | if (p == q || *q == '\0') | |
708 | return 0; | |
709 | ||
710 | decode_address (addrp, p, q - p); | |
711 | return 1; | |
712 | } | |
713 |