Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Serial interface for local (hardwired) serial ports on Un*x like systems |
1e4728e7 AC |
2 | |
3 | Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, | |
3eb25fda | 4 | 2003, 2004, 2005 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 "defs.h" | |
24 | #include "serial.h" | |
3eb25fda | 25 | #include "ser-base.h" |
c2c6d25f JM |
26 | #include "ser-unix.h" |
27 | ||
c906108c SS |
28 | #include <fcntl.h> |
29 | #include <sys/types.h> | |
30 | #include "terminal.h" | |
c2c6d25f JM |
31 | #include <sys/socket.h> |
32 | #include <sys/time.h> | |
33 | ||
34 | #include "gdb_string.h" | |
c2c6d25f | 35 | |
c906108c SS |
36 | #ifdef HAVE_TERMIOS |
37 | ||
38 | struct hardwire_ttystate | |
c5aa993b JM |
39 | { |
40 | struct termios termios; | |
41 | }; | |
c906108c SS |
42 | #endif /* termios */ |
43 | ||
44 | #ifdef HAVE_TERMIO | |
45 | ||
46 | /* It is believed that all systems which have added job control to SVR3 | |
47 | (e.g. sco) have also added termios. Even if not, trying to figure out | |
48 | all the variations (TIOCGPGRP vs. TCGETPGRP, etc.) would be pretty | |
49 | bewildering. So we don't attempt it. */ | |
50 | ||
51 | struct hardwire_ttystate | |
c5aa993b JM |
52 | { |
53 | struct termio termio; | |
54 | }; | |
c906108c SS |
55 | #endif /* termio */ |
56 | ||
57 | #ifdef HAVE_SGTTY | |
c906108c | 58 | struct hardwire_ttystate |
c5aa993b JM |
59 | { |
60 | struct sgttyb sgttyb; | |
61 | struct tchars tc; | |
62 | struct ltchars ltc; | |
63 | /* Line discipline flags. */ | |
64 | int lmode; | |
65 | }; | |
c906108c SS |
66 | #endif /* sgtty */ |
67 | ||
819cc324 AC |
68 | static int hardwire_open (struct serial *scb, const char *name); |
69 | static void hardwire_raw (struct serial *scb); | |
70 | static int wait_for (struct serial *scb, int timeout); | |
71 | static int hardwire_readchar (struct serial *scb, int timeout); | |
72 | static int do_hardwire_readchar (struct serial *scb, int timeout); | |
c2c6d25f | 73 | static int rate_to_code (int rate); |
819cc324 AC |
74 | static int hardwire_setbaudrate (struct serial *scb, int rate); |
75 | static void hardwire_close (struct serial *scb); | |
76 | static int get_tty_state (struct serial *scb, | |
77 | struct hardwire_ttystate * state); | |
78 | static int set_tty_state (struct serial *scb, | |
79 | struct hardwire_ttystate * state); | |
80 | static serial_ttystate hardwire_get_tty_state (struct serial *scb); | |
81 | static int hardwire_set_tty_state (struct serial *scb, serial_ttystate state); | |
82 | static int hardwire_noflush_set_tty_state (struct serial *, serial_ttystate, | |
83 | serial_ttystate); | |
84 | static void hardwire_print_tty_state (struct serial *, serial_ttystate, | |
85 | struct ui_file *); | |
86 | static int hardwire_drain_output (struct serial *); | |
87 | static int hardwire_flush_output (struct serial *); | |
88 | static int hardwire_flush_input (struct serial *); | |
89 | static int hardwire_send_break (struct serial *); | |
90 | static int hardwire_setstopbits (struct serial *, int); | |
91 | ||
c2c6d25f JM |
92 | void _initialize_ser_hardwire (void); |
93 | ||
c906108c SS |
94 | /* Open up a real live device for serial I/O */ |
95 | ||
96 | static int | |
819cc324 | 97 | hardwire_open (struct serial *scb, const char *name) |
c906108c SS |
98 | { |
99 | scb->fd = open (name, O_RDWR); | |
100 | if (scb->fd < 0) | |
101 | return -1; | |
102 | ||
103 | return 0; | |
104 | } | |
105 | ||
106 | static int | |
819cc324 | 107 | get_tty_state (struct serial *scb, struct hardwire_ttystate *state) |
c906108c SS |
108 | { |
109 | #ifdef HAVE_TERMIOS | |
c5aa993b | 110 | if (tcgetattr (scb->fd, &state->termios) < 0) |
c906108c SS |
111 | return -1; |
112 | ||
113 | return 0; | |
114 | #endif | |
115 | ||
116 | #ifdef HAVE_TERMIO | |
117 | if (ioctl (scb->fd, TCGETA, &state->termio) < 0) | |
118 | return -1; | |
119 | return 0; | |
120 | #endif | |
121 | ||
122 | #ifdef HAVE_SGTTY | |
123 | if (ioctl (scb->fd, TIOCGETP, &state->sgttyb) < 0) | |
124 | return -1; | |
125 | if (ioctl (scb->fd, TIOCGETC, &state->tc) < 0) | |
126 | return -1; | |
127 | if (ioctl (scb->fd, TIOCGLTC, &state->ltc) < 0) | |
128 | return -1; | |
129 | if (ioctl (scb->fd, TIOCLGET, &state->lmode) < 0) | |
130 | return -1; | |
131 | ||
132 | return 0; | |
133 | #endif | |
134 | } | |
135 | ||
136 | static int | |
819cc324 | 137 | set_tty_state (struct serial *scb, struct hardwire_ttystate *state) |
c906108c SS |
138 | { |
139 | #ifdef HAVE_TERMIOS | |
c5aa993b | 140 | if (tcsetattr (scb->fd, TCSANOW, &state->termios) < 0) |
c906108c SS |
141 | return -1; |
142 | ||
143 | return 0; | |
144 | #endif | |
145 | ||
146 | #ifdef HAVE_TERMIO | |
147 | if (ioctl (scb->fd, TCSETA, &state->termio) < 0) | |
148 | return -1; | |
149 | return 0; | |
150 | #endif | |
151 | ||
152 | #ifdef HAVE_SGTTY | |
153 | if (ioctl (scb->fd, TIOCSETN, &state->sgttyb) < 0) | |
154 | return -1; | |
155 | if (ioctl (scb->fd, TIOCSETC, &state->tc) < 0) | |
156 | return -1; | |
157 | if (ioctl (scb->fd, TIOCSLTC, &state->ltc) < 0) | |
158 | return -1; | |
159 | if (ioctl (scb->fd, TIOCLSET, &state->lmode) < 0) | |
160 | return -1; | |
161 | ||
162 | return 0; | |
163 | #endif | |
164 | } | |
165 | ||
166 | static serial_ttystate | |
819cc324 | 167 | hardwire_get_tty_state (struct serial *scb) |
c906108c SS |
168 | { |
169 | struct hardwire_ttystate *state; | |
170 | ||
c5aa993b | 171 | state = (struct hardwire_ttystate *) xmalloc (sizeof *state); |
c906108c | 172 | |
c5aa993b | 173 | if (get_tty_state (scb, state)) |
c906108c SS |
174 | return NULL; |
175 | ||
c5aa993b | 176 | return (serial_ttystate) state; |
c906108c SS |
177 | } |
178 | ||
179 | static int | |
819cc324 | 180 | hardwire_set_tty_state (struct serial *scb, serial_ttystate ttystate) |
c906108c SS |
181 | { |
182 | struct hardwire_ttystate *state; | |
183 | ||
c5aa993b | 184 | state = (struct hardwire_ttystate *) ttystate; |
c906108c | 185 | |
c5aa993b | 186 | return set_tty_state (scb, state); |
c906108c SS |
187 | } |
188 | ||
189 | static int | |
819cc324 | 190 | hardwire_noflush_set_tty_state (struct serial *scb, |
c2c6d25f JM |
191 | serial_ttystate new_ttystate, |
192 | serial_ttystate old_ttystate) | |
c906108c SS |
193 | { |
194 | struct hardwire_ttystate new_state; | |
195 | #ifdef HAVE_SGTTY | |
196 | struct hardwire_ttystate *state = (struct hardwire_ttystate *) old_ttystate; | |
197 | #endif | |
198 | ||
c5aa993b | 199 | new_state = *(struct hardwire_ttystate *) new_ttystate; |
c906108c SS |
200 | |
201 | /* Don't change in or out of raw mode; we don't want to flush input. | |
202 | termio and termios have no such restriction; for them flushing input | |
203 | is separate from setting the attributes. */ | |
204 | ||
205 | #ifdef HAVE_SGTTY | |
206 | if (state->sgttyb.sg_flags & RAW) | |
207 | new_state.sgttyb.sg_flags |= RAW; | |
208 | else | |
209 | new_state.sgttyb.sg_flags &= ~RAW; | |
210 | ||
211 | /* I'm not sure whether this is necessary; the manpage just mentions | |
212 | RAW not CBREAK. */ | |
213 | if (state->sgttyb.sg_flags & CBREAK) | |
214 | new_state.sgttyb.sg_flags |= CBREAK; | |
215 | else | |
216 | new_state.sgttyb.sg_flags &= ~CBREAK; | |
217 | #endif | |
218 | ||
219 | return set_tty_state (scb, &new_state); | |
220 | } | |
221 | ||
222 | static void | |
819cc324 | 223 | hardwire_print_tty_state (struct serial *scb, |
c2c6d25f | 224 | serial_ttystate ttystate, |
d9fcf2fb | 225 | struct ui_file *stream) |
c906108c SS |
226 | { |
227 | struct hardwire_ttystate *state = (struct hardwire_ttystate *) ttystate; | |
228 | int i; | |
229 | ||
230 | #ifdef HAVE_TERMIOS | |
c2c6d25f | 231 | fprintf_filtered (stream, "c_iflag = 0x%x, c_oflag = 0x%x,\n", |
2acceee2 JM |
232 | (int) state->termios.c_iflag, |
233 | (int) state->termios.c_oflag); | |
c2c6d25f | 234 | fprintf_filtered (stream, "c_cflag = 0x%x, c_lflag = 0x%x\n", |
2acceee2 JM |
235 | (int) state->termios.c_cflag, |
236 | (int) state->termios.c_lflag); | |
c906108c SS |
237 | #if 0 |
238 | /* This not in POSIX, and is not really documented by those systems | |
239 | which have it (at least not Sun). */ | |
c2c6d25f | 240 | fprintf_filtered (stream, "c_line = 0x%x.\n", state->termios.c_line); |
c906108c | 241 | #endif |
c2c6d25f | 242 | fprintf_filtered (stream, "c_cc: "); |
c906108c | 243 | for (i = 0; i < NCCS; i += 1) |
c2c6d25f JM |
244 | fprintf_filtered (stream, "0x%x ", state->termios.c_cc[i]); |
245 | fprintf_filtered (stream, "\n"); | |
c906108c SS |
246 | #endif |
247 | ||
248 | #ifdef HAVE_TERMIO | |
c2c6d25f JM |
249 | fprintf_filtered (stream, "c_iflag = 0x%x, c_oflag = 0x%x,\n", |
250 | state->termio.c_iflag, state->termio.c_oflag); | |
251 | fprintf_filtered (stream, "c_cflag = 0x%x, c_lflag = 0x%x, c_line = 0x%x.\n", | |
252 | state->termio.c_cflag, state->termio.c_lflag, | |
253 | state->termio.c_line); | |
254 | fprintf_filtered (stream, "c_cc: "); | |
c906108c | 255 | for (i = 0; i < NCC; i += 1) |
c2c6d25f JM |
256 | fprintf_filtered (stream, "0x%x ", state->termio.c_cc[i]); |
257 | fprintf_filtered (stream, "\n"); | |
c906108c SS |
258 | #endif |
259 | ||
260 | #ifdef HAVE_SGTTY | |
c2c6d25f JM |
261 | fprintf_filtered (stream, "sgttyb.sg_flags = 0x%x.\n", |
262 | state->sgttyb.sg_flags); | |
c906108c | 263 | |
c2c6d25f | 264 | fprintf_filtered (stream, "tchars: "); |
c5aa993b | 265 | for (i = 0; i < (int) sizeof (struct tchars); i++) |
c2c6d25f | 266 | fprintf_filtered (stream, "0x%x ", ((unsigned char *) &state->tc)[i]); |
64122a8b | 267 | fprintf_filtered (stream, "\n"); |
c906108c | 268 | |
c2c6d25f | 269 | fprintf_filtered (stream, "ltchars: "); |
c5aa993b | 270 | for (i = 0; i < (int) sizeof (struct ltchars); i++) |
c2c6d25f JM |
271 | fprintf_filtered (stream, "0x%x ", ((unsigned char *) &state->ltc)[i]); |
272 | fprintf_filtered (stream, "\n"); | |
c906108c | 273 | |
c2c6d25f | 274 | fprintf_filtered (stream, "lmode: 0x%x\n", state->lmode); |
c906108c SS |
275 | #endif |
276 | } | |
277 | ||
278 | /* Wait for the output to drain away, as opposed to flushing (discarding) it */ | |
279 | ||
280 | static int | |
819cc324 | 281 | hardwire_drain_output (struct serial *scb) |
c906108c SS |
282 | { |
283 | #ifdef HAVE_TERMIOS | |
284 | return tcdrain (scb->fd); | |
285 | #endif | |
286 | ||
287 | #ifdef HAVE_TERMIO | |
288 | return ioctl (scb->fd, TCSBRK, 1); | |
289 | #endif | |
290 | ||
291 | #ifdef HAVE_SGTTY | |
292 | /* Get the current state and then restore it using TIOCSETP, | |
293 | which should cause the output to drain and pending input | |
294 | to be discarded. */ | |
295 | { | |
296 | struct hardwire_ttystate state; | |
297 | if (get_tty_state (scb, &state)) | |
298 | { | |
299 | return (-1); | |
300 | } | |
301 | else | |
302 | { | |
303 | return (ioctl (scb->fd, TIOCSETP, &state.sgttyb)); | |
304 | } | |
305 | } | |
c5aa993b | 306 | #endif |
c906108c SS |
307 | } |
308 | ||
309 | static int | |
819cc324 | 310 | hardwire_flush_output (struct serial *scb) |
c906108c SS |
311 | { |
312 | #ifdef HAVE_TERMIOS | |
313 | return tcflush (scb->fd, TCOFLUSH); | |
314 | #endif | |
315 | ||
316 | #ifdef HAVE_TERMIO | |
317 | return ioctl (scb->fd, TCFLSH, 1); | |
318 | #endif | |
319 | ||
320 | #ifdef HAVE_SGTTY | |
321 | /* This flushes both input and output, but we can't do better. */ | |
322 | return ioctl (scb->fd, TIOCFLUSH, 0); | |
c5aa993b | 323 | #endif |
c906108c SS |
324 | } |
325 | ||
326 | static int | |
819cc324 | 327 | hardwire_flush_input (struct serial *scb) |
c906108c | 328 | { |
dd5da072 | 329 | ser_base_flush_input (scb); |
c906108c SS |
330 | |
331 | #ifdef HAVE_TERMIOS | |
332 | return tcflush (scb->fd, TCIFLUSH); | |
333 | #endif | |
334 | ||
335 | #ifdef HAVE_TERMIO | |
336 | return ioctl (scb->fd, TCFLSH, 0); | |
337 | #endif | |
338 | ||
339 | #ifdef HAVE_SGTTY | |
340 | /* This flushes both input and output, but we can't do better. */ | |
341 | return ioctl (scb->fd, TIOCFLUSH, 0); | |
c5aa993b | 342 | #endif |
c906108c SS |
343 | } |
344 | ||
345 | static int | |
819cc324 | 346 | hardwire_send_break (struct serial *scb) |
c906108c SS |
347 | { |
348 | #ifdef HAVE_TERMIOS | |
349 | return tcsendbreak (scb->fd, 0); | |
350 | #endif | |
351 | ||
352 | #ifdef HAVE_TERMIO | |
353 | return ioctl (scb->fd, TCSBRK, 0); | |
354 | #endif | |
355 | ||
356 | #ifdef HAVE_SGTTY | |
357 | { | |
358 | int status; | |
359 | struct timeval timeout; | |
360 | ||
361 | status = ioctl (scb->fd, TIOCSBRK, 0); | |
362 | ||
363 | /* Can't use usleep; it doesn't exist in BSD 4.2. */ | |
364 | /* Note that if this select() is interrupted by a signal it will not wait | |
365 | the full length of time. I think that is OK. */ | |
366 | timeout.tv_sec = 0; | |
367 | timeout.tv_usec = 250000; | |
368 | select (0, 0, 0, 0, &timeout); | |
369 | status = ioctl (scb->fd, TIOCCBRK, 0); | |
370 | return status; | |
371 | } | |
c5aa993b | 372 | #endif |
c906108c SS |
373 | } |
374 | ||
375 | static void | |
819cc324 | 376 | hardwire_raw (struct serial *scb) |
c906108c SS |
377 | { |
378 | struct hardwire_ttystate state; | |
379 | ||
c5aa993b JM |
380 | if (get_tty_state (scb, &state)) |
381 | fprintf_unfiltered (gdb_stderr, "get_tty_state failed: %s\n", safe_strerror (errno)); | |
c906108c SS |
382 | |
383 | #ifdef HAVE_TERMIOS | |
384 | state.termios.c_iflag = 0; | |
385 | state.termios.c_oflag = 0; | |
386 | state.termios.c_lflag = 0; | |
c5aa993b | 387 | state.termios.c_cflag &= ~(CSIZE | PARENB); |
c906108c SS |
388 | state.termios.c_cflag |= CLOCAL | CS8; |
389 | state.termios.c_cc[VMIN] = 0; | |
390 | state.termios.c_cc[VTIME] = 0; | |
391 | #endif | |
392 | ||
393 | #ifdef HAVE_TERMIO | |
394 | state.termio.c_iflag = 0; | |
395 | state.termio.c_oflag = 0; | |
396 | state.termio.c_lflag = 0; | |
c5aa993b | 397 | state.termio.c_cflag &= ~(CSIZE | PARENB); |
c906108c SS |
398 | state.termio.c_cflag |= CLOCAL | CS8; |
399 | state.termio.c_cc[VMIN] = 0; | |
400 | state.termio.c_cc[VTIME] = 0; | |
401 | #endif | |
402 | ||
403 | #ifdef HAVE_SGTTY | |
404 | state.sgttyb.sg_flags |= RAW | ANYP; | |
405 | state.sgttyb.sg_flags &= ~(CBREAK | ECHO); | |
406 | #endif | |
407 | ||
408 | scb->current_timeout = 0; | |
409 | ||
410 | if (set_tty_state (scb, &state)) | |
c5aa993b | 411 | fprintf_unfiltered (gdb_stderr, "set_tty_state failed: %s\n", safe_strerror (errno)); |
c906108c SS |
412 | } |
413 | ||
414 | /* Wait for input on scb, with timeout seconds. Returns 0 on success, | |
415 | otherwise SERIAL_TIMEOUT or SERIAL_ERROR. | |
416 | ||
417 | For termio{s}, we actually just setup VTIME if necessary, and let the | |
418 | timeout occur in the read() in hardwire_read(). | |
419 | */ | |
420 | ||
2acceee2 | 421 | /* FIXME: cagney/1999-09-16: Don't replace this with the equivalent |
b4505029 | 422 | ser_base*() until the old TERMIOS/SGTTY/... timer code has been |
2acceee2 JM |
423 | flushed. . */ |
424 | ||
425 | /* NOTE: cagney/1999-09-30: Much of the code below is dead. The only | |
426 | possible values of the TIMEOUT parameter are ONE and ZERO. | |
427 | Consequently all the code that tries to handle the possability of | |
428 | an overflowed timer is unnecessary. */ | |
c2c6d25f | 429 | |
c906108c | 430 | static int |
819cc324 | 431 | wait_for (struct serial *scb, int timeout) |
c906108c | 432 | { |
c906108c | 433 | #ifdef HAVE_SGTTY |
ab5ba170 AC |
434 | while (1) |
435 | { | |
436 | struct timeval tv; | |
437 | fd_set readfds; | |
438 | int numfds; | |
c906108c | 439 | |
ab5ba170 AC |
440 | /* NOTE: Some OS's can scramble the READFDS when the select() |
441 | call fails (ex the kernel with Red Hat 5.2). Initialize all | |
442 | arguments before each call. */ | |
c906108c | 443 | |
ab5ba170 AC |
444 | tv.tv_sec = timeout; |
445 | tv.tv_usec = 0; | |
c906108c | 446 | |
ab5ba170 AC |
447 | FD_ZERO (&readfds); |
448 | FD_SET (scb->fd, &readfds); | |
c906108c | 449 | |
ab5ba170 AC |
450 | if (timeout >= 0) |
451 | numfds = select (scb->fd + 1, &readfds, 0, 0, &tv); | |
452 | else | |
453 | numfds = select (scb->fd + 1, &readfds, 0, 0, 0); | |
c906108c | 454 | |
ab5ba170 AC |
455 | if (numfds <= 0) |
456 | if (numfds == 0) | |
457 | return SERIAL_TIMEOUT; | |
458 | else if (errno == EINTR) | |
459 | continue; | |
c906108c | 460 | else |
ab5ba170 | 461 | return SERIAL_ERROR; /* Got an error from select or poll */ |
c906108c | 462 | |
ab5ba170 AC |
463 | return 0; |
464 | } | |
c5aa993b | 465 | #endif /* HAVE_SGTTY */ |
c906108c SS |
466 | |
467 | #if defined HAVE_TERMIO || defined HAVE_TERMIOS | |
468 | if (timeout == scb->current_timeout) | |
469 | return 0; | |
470 | ||
471 | scb->current_timeout = timeout; | |
472 | ||
473 | { | |
474 | struct hardwire_ttystate state; | |
475 | ||
c5aa993b JM |
476 | if (get_tty_state (scb, &state)) |
477 | fprintf_unfiltered (gdb_stderr, "get_tty_state failed: %s\n", safe_strerror (errno)); | |
c906108c SS |
478 | |
479 | #ifdef HAVE_TERMIOS | |
480 | if (timeout < 0) | |
481 | { | |
482 | /* No timeout. */ | |
483 | state.termios.c_cc[VTIME] = 0; | |
484 | state.termios.c_cc[VMIN] = 1; | |
485 | } | |
486 | else | |
487 | { | |
488 | state.termios.c_cc[VMIN] = 0; | |
489 | state.termios.c_cc[VTIME] = timeout * 10; | |
490 | if (state.termios.c_cc[VTIME] != timeout * 10) | |
491 | { | |
492 | ||
493 | /* If c_cc is an 8-bit signed character, we can't go | |
494 | bigger than this. If it is always unsigned, we could use | |
495 | 25. */ | |
496 | ||
497 | scb->current_timeout = 12; | |
498 | state.termios.c_cc[VTIME] = scb->current_timeout * 10; | |
499 | scb->timeout_remaining = timeout - scb->current_timeout; | |
500 | } | |
501 | } | |
502 | #endif | |
503 | ||
504 | #ifdef HAVE_TERMIO | |
505 | if (timeout < 0) | |
506 | { | |
507 | /* No timeout. */ | |
508 | state.termio.c_cc[VTIME] = 0; | |
509 | state.termio.c_cc[VMIN] = 1; | |
510 | } | |
511 | else | |
512 | { | |
513 | state.termio.c_cc[VMIN] = 0; | |
514 | state.termio.c_cc[VTIME] = timeout * 10; | |
515 | if (state.termio.c_cc[VTIME] != timeout * 10) | |
516 | { | |
517 | /* If c_cc is an 8-bit signed character, we can't go | |
518 | bigger than this. If it is always unsigned, we could use | |
519 | 25. */ | |
520 | ||
521 | scb->current_timeout = 12; | |
522 | state.termio.c_cc[VTIME] = scb->current_timeout * 10; | |
523 | scb->timeout_remaining = timeout - scb->current_timeout; | |
524 | } | |
525 | } | |
526 | #endif | |
527 | ||
528 | if (set_tty_state (scb, &state)) | |
c5aa993b | 529 | fprintf_unfiltered (gdb_stderr, "set_tty_state failed: %s\n", safe_strerror (errno)); |
c906108c SS |
530 | |
531 | return 0; | |
532 | } | |
c5aa993b | 533 | #endif /* HAVE_TERMIO || HAVE_TERMIOS */ |
c906108c SS |
534 | } |
535 | ||
536 | /* Read a character with user-specified timeout. TIMEOUT is number of seconds | |
537 | to wait, or -1 to wait forever. Use timeout of 0 to effect a poll. Returns | |
538 | char if successful. Returns SERIAL_TIMEOUT if timeout expired, EOF if line | |
539 | dropped dead, or SERIAL_ERROR for any other error (see errno in that case). */ | |
c2c6d25f JM |
540 | |
541 | /* FIXME: cagney/1999-09-16: Don't replace this with the equivalent | |
b4505029 | 542 | ser_base*() until the old TERMIOS/SGTTY/... timer code has been |
c2c6d25f JM |
543 | flushed. */ |
544 | ||
545 | /* NOTE: cagney/1999-09-16: This function is not identical to | |
b4505029 | 546 | ser_base_readchar() as part of replacing it with ser_base*() |
c2c6d25f | 547 | merging will be required - this code handles the case where read() |
b4505029 | 548 | times out due to no data while ser_base_readchar() doesn't expect |
c2c6d25f JM |
549 | that. */ |
550 | ||
c906108c | 551 | static int |
819cc324 | 552 | do_hardwire_readchar (struct serial *scb, int timeout) |
c906108c | 553 | { |
7a292a7a SS |
554 | int status, delta; |
555 | int detach = 0; | |
c906108c | 556 | |
c906108c SS |
557 | if (timeout > 0) |
558 | timeout++; | |
c906108c | 559 | |
2c1ab592 MS |
560 | /* We have to be able to keep the GUI alive here, so we break the |
561 | original timeout into steps of 1 second, running the "keep the | |
562 | GUI alive" hook each time through the loop. | |
563 | ||
564 | Also, timeout = 0 means to poll, so we just set the delta to 0, | |
565 | so we will only go through the loop once. */ | |
c5aa993b | 566 | |
7a292a7a | 567 | delta = (timeout == 0 ? 0 : 1); |
c906108c SS |
568 | while (1) |
569 | { | |
c906108c | 570 | |
7a292a7a SS |
571 | /* N.B. The UI may destroy our world (for instance by calling |
572 | remote_stop,) in which case we want to get out of here as | |
573 | quickly as possible. It is not safe to touch scb, since | |
98bbd631 AC |
574 | someone else might have freed it. The |
575 | deprecated_ui_loop_hook signals that we should exit by | |
576 | returning 1. */ | |
7a292a7a | 577 | |
98bbd631 AC |
578 | if (deprecated_ui_loop_hook) |
579 | detach = deprecated_ui_loop_hook (0); | |
7a292a7a SS |
580 | |
581 | if (detach) | |
582 | return SERIAL_TIMEOUT; | |
583 | ||
584 | scb->timeout_remaining = (timeout < 0 ? timeout : timeout - delta); | |
585 | status = wait_for (scb, delta); | |
586 | ||
c906108c SS |
587 | if (status < 0) |
588 | return status; | |
589 | ||
2acceee2 | 590 | status = read (scb->fd, scb->buf, BUFSIZ); |
c906108c | 591 | |
2acceee2 | 592 | if (status <= 0) |
c906108c | 593 | { |
2acceee2 | 594 | if (status == 0) |
c906108c SS |
595 | { |
596 | /* Zero characters means timeout (it could also be EOF, but | |
c5aa993b | 597 | we don't (yet at least) distinguish). */ |
c906108c SS |
598 | if (scb->timeout_remaining > 0) |
599 | { | |
600 | timeout = scb->timeout_remaining; | |
601 | continue; | |
602 | } | |
c5aa993b JM |
603 | else if (scb->timeout_remaining < 0) |
604 | continue; | |
c906108c SS |
605 | else |
606 | return SERIAL_TIMEOUT; | |
607 | } | |
608 | else if (errno == EINTR) | |
609 | continue; | |
610 | else | |
611 | return SERIAL_ERROR; /* Got an error from read */ | |
612 | } | |
613 | ||
2acceee2 | 614 | scb->bufcnt = status; |
c906108c SS |
615 | scb->bufcnt--; |
616 | scb->bufp = scb->buf; | |
617 | return *scb->bufp++; | |
618 | } | |
619 | } | |
620 | ||
2acceee2 | 621 | static int |
819cc324 | 622 | hardwire_readchar (struct serial *scb, int timeout) |
2acceee2 JM |
623 | { |
624 | return generic_readchar (scb, timeout, do_hardwire_readchar); | |
625 | } | |
626 | ||
627 | ||
c906108c SS |
628 | #ifndef B19200 |
629 | #define B19200 EXTA | |
630 | #endif | |
631 | ||
632 | #ifndef B38400 | |
633 | #define B38400 EXTB | |
634 | #endif | |
635 | ||
636 | /* Translate baud rates from integers to damn B_codes. Unix should | |
637 | have outgrown this crap years ago, but even POSIX wouldn't buck it. */ | |
638 | ||
639 | static struct | |
640 | { | |
641 | int rate; | |
642 | int code; | |
643 | } | |
644 | baudtab[] = | |
645 | { | |
c5aa993b JM |
646 | { |
647 | 50, B50 | |
648 | } | |
649 | , | |
650 | { | |
651 | 75, B75 | |
652 | } | |
653 | , | |
654 | { | |
655 | 110, B110 | |
656 | } | |
657 | , | |
658 | { | |
659 | 134, B134 | |
660 | } | |
661 | , | |
662 | { | |
663 | 150, B150 | |
664 | } | |
665 | , | |
666 | { | |
667 | 200, B200 | |
668 | } | |
669 | , | |
670 | { | |
671 | 300, B300 | |
672 | } | |
673 | , | |
674 | { | |
675 | 600, B600 | |
676 | } | |
677 | , | |
678 | { | |
679 | 1200, B1200 | |
680 | } | |
681 | , | |
682 | { | |
683 | 1800, B1800 | |
684 | } | |
685 | , | |
686 | { | |
687 | 2400, B2400 | |
688 | } | |
689 | , | |
690 | { | |
691 | 4800, B4800 | |
692 | } | |
693 | , | |
694 | { | |
695 | 9600, B9600 | |
696 | } | |
697 | , | |
698 | { | |
699 | 19200, B19200 | |
700 | } | |
701 | , | |
702 | { | |
703 | 38400, B38400 | |
704 | } | |
705 | , | |
c906108c | 706 | #ifdef B57600 |
c5aa993b JM |
707 | { |
708 | 57600, B57600 | |
709 | } | |
710 | , | |
c906108c SS |
711 | #endif |
712 | #ifdef B115200 | |
c5aa993b JM |
713 | { |
714 | 115200, B115200 | |
715 | } | |
716 | , | |
c906108c SS |
717 | #endif |
718 | #ifdef B230400 | |
c5aa993b JM |
719 | { |
720 | 230400, B230400 | |
721 | } | |
722 | , | |
c906108c SS |
723 | #endif |
724 | #ifdef B460800 | |
c5aa993b JM |
725 | { |
726 | 460800, B460800 | |
727 | } | |
728 | , | |
c906108c | 729 | #endif |
c5aa993b JM |
730 | { |
731 | -1, -1 | |
732 | } | |
733 | , | |
c906108c SS |
734 | }; |
735 | ||
c5aa993b | 736 | static int |
c2c6d25f | 737 | rate_to_code (int rate) |
c906108c SS |
738 | { |
739 | int i; | |
740 | ||
741 | for (i = 0; baudtab[i].rate != -1; i++) | |
08b4f080 FN |
742 | { |
743 | /* test for perfect macth. */ | |
744 | if (rate == baudtab[i].rate) | |
745 | return baudtab[i].code; | |
746 | else | |
747 | { | |
748 | /* check if it is in between valid values. */ | |
749 | if (rate < baudtab[i].rate) | |
750 | { | |
751 | if (i) | |
752 | { | |
8a3fe4f8 | 753 | warning (_("Invalid baud rate %d. Closest values are %d and %d."), |
08b4f080 FN |
754 | rate, baudtab[i - 1].rate, baudtab[i].rate); |
755 | } | |
756 | else | |
757 | { | |
8a3fe4f8 | 758 | warning (_("Invalid baud rate %d. Minimum value is %d."), |
08b4f080 FN |
759 | rate, baudtab[0].rate); |
760 | } | |
761 | return -1; | |
762 | } | |
763 | } | |
764 | } | |
765 | ||
766 | /* The requested speed was too large. */ | |
8a3fe4f8 | 767 | warning (_("Invalid baud rate %d. Maximum value is %d."), |
08b4f080 | 768 | rate, baudtab[i - 1].rate); |
c906108c SS |
769 | return -1; |
770 | } | |
771 | ||
772 | static int | |
819cc324 | 773 | hardwire_setbaudrate (struct serial *scb, int rate) |
c906108c SS |
774 | { |
775 | struct hardwire_ttystate state; | |
08b4f080 FN |
776 | int baud_code = rate_to_code (rate); |
777 | ||
778 | if (baud_code < 0) | |
779 | { | |
780 | /* The baud rate was not valid. | |
781 | A warning has already been issued. */ | |
782 | errno = EINVAL; | |
783 | return -1; | |
784 | } | |
c906108c | 785 | |
c5aa993b | 786 | if (get_tty_state (scb, &state)) |
c906108c SS |
787 | return -1; |
788 | ||
789 | #ifdef HAVE_TERMIOS | |
08b4f080 FN |
790 | cfsetospeed (&state.termios, baud_code); |
791 | cfsetispeed (&state.termios, baud_code); | |
c906108c SS |
792 | #endif |
793 | ||
794 | #ifdef HAVE_TERMIO | |
795 | #ifndef CIBAUD | |
796 | #define CIBAUD CBAUD | |
797 | #endif | |
798 | ||
799 | state.termio.c_cflag &= ~(CBAUD | CIBAUD); | |
08b4f080 | 800 | state.termio.c_cflag |= baud_code; |
c906108c SS |
801 | #endif |
802 | ||
803 | #ifdef HAVE_SGTTY | |
08b4f080 FN |
804 | state.sgttyb.sg_ispeed = baud_code; |
805 | state.sgttyb.sg_ospeed = baud_code; | |
c906108c SS |
806 | #endif |
807 | ||
808 | return set_tty_state (scb, &state); | |
809 | } | |
810 | ||
811 | static int | |
819cc324 | 812 | hardwire_setstopbits (struct serial *scb, int num) |
c906108c SS |
813 | { |
814 | struct hardwire_ttystate state; | |
815 | int newbit; | |
816 | ||
c5aa993b | 817 | if (get_tty_state (scb, &state)) |
c906108c SS |
818 | return -1; |
819 | ||
820 | switch (num) | |
821 | { | |
822 | case SERIAL_1_STOPBITS: | |
823 | newbit = 0; | |
824 | break; | |
825 | case SERIAL_1_AND_A_HALF_STOPBITS: | |
826 | case SERIAL_2_STOPBITS: | |
827 | newbit = 1; | |
828 | break; | |
829 | default: | |
830 | return 1; | |
831 | } | |
832 | ||
833 | #ifdef HAVE_TERMIOS | |
834 | if (!newbit) | |
835 | state.termios.c_cflag &= ~CSTOPB; | |
836 | else | |
c5aa993b | 837 | state.termios.c_cflag |= CSTOPB; /* two bits */ |
c906108c SS |
838 | #endif |
839 | ||
840 | #ifdef HAVE_TERMIO | |
841 | if (!newbit) | |
842 | state.termio.c_cflag &= ~CSTOPB; | |
843 | else | |
c5aa993b | 844 | state.termio.c_cflag |= CSTOPB; /* two bits */ |
c906108c SS |
845 | #endif |
846 | ||
847 | #ifdef HAVE_SGTTY | |
848 | return 0; /* sgtty doesn't support this */ | |
849 | #endif | |
850 | ||
851 | return set_tty_state (scb, &state); | |
852 | } | |
853 | ||
c906108c | 854 | static void |
819cc324 | 855 | hardwire_close (struct serial *scb) |
c906108c SS |
856 | { |
857 | if (scb->fd < 0) | |
858 | return; | |
859 | ||
c5aa993b | 860 | close (scb->fd); |
c906108c SS |
861 | scb->fd = -1; |
862 | } | |
c2c6d25f | 863 | \f |
2acceee2 | 864 | \f |
c906108c | 865 | void |
c2c6d25f | 866 | _initialize_ser_hardwire (void) |
c906108c | 867 | { |
c2c6d25f | 868 | struct serial_ops *ops = XMALLOC (struct serial_ops); |
2fdbdd39 | 869 | memset (ops, 0, sizeof (struct serial_ops)); |
c2c6d25f JM |
870 | ops->name = "hardwire"; |
871 | ops->next = 0; | |
872 | ops->open = hardwire_open; | |
873 | ops->close = hardwire_close; | |
b4505029 | 874 | /* FIXME: Don't replace this with the equivalent ser_base*() until |
c2c6d25f JM |
875 | the old TERMIOS/SGTTY/... timer code has been flushed. cagney |
876 | 1999-09-16. */ | |
877 | ops->readchar = hardwire_readchar; | |
dd5da072 | 878 | ops->write = ser_base_write; |
c2c6d25f JM |
879 | ops->flush_output = hardwire_flush_output; |
880 | ops->flush_input = hardwire_flush_input; | |
881 | ops->send_break = hardwire_send_break; | |
882 | ops->go_raw = hardwire_raw; | |
883 | ops->get_tty_state = hardwire_get_tty_state; | |
884 | ops->set_tty_state = hardwire_set_tty_state; | |
885 | ops->print_tty_state = hardwire_print_tty_state; | |
886 | ops->noflush_set_tty_state = hardwire_noflush_set_tty_state; | |
887 | ops->setbaudrate = hardwire_setbaudrate; | |
888 | ops->setstopbits = hardwire_setstopbits; | |
889 | ops->drain_output = hardwire_drain_output; | |
dd5da072 | 890 | ops->async = ser_base_async; |
b4505029 MM |
891 | ops->read_prim = ser_unix_read_prim; |
892 | ops->write_prim = ser_unix_write_prim; | |
c2c6d25f | 893 | serial_add_interface (ops); |
c906108c | 894 | } |
b4505029 MM |
895 | |
896 | int | |
897 | ser_unix_read_prim (struct serial *scb, size_t count) | |
898 | { | |
899 | int status; | |
900 | ||
901 | while (1) | |
902 | { | |
903 | status = read (scb->fd, scb->buf, count); | |
904 | if (status != -1 || errno != EINTR) | |
905 | break; | |
906 | } | |
907 | return status; | |
908 | } | |
909 | ||
910 | int | |
911 | ser_unix_write_prim (struct serial *scb, const void *buf, size_t len) | |
912 | { | |
913 | /* ??? Historically, GDB has not retried calls to "write" that | |
914 | result in EINTR. */ | |
915 | return write (scb->fd, buf, len); | |
916 | } |