| 1 | /* Serial interface for local (hardwired) serial ports on Un*x like systems |
| 2 | |
| 3 | Copyright (C) 1992-2017 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "serial.h" |
| 22 | #include "ser-base.h" |
| 23 | #include "ser-unix.h" |
| 24 | |
| 25 | #include <fcntl.h> |
| 26 | #include <sys/types.h> |
| 27 | #include "terminal.h" |
| 28 | #include <sys/socket.h> |
| 29 | #include "gdb_sys_time.h" |
| 30 | |
| 31 | #include "gdb_select.h" |
| 32 | #include "gdbcmd.h" |
| 33 | #include "filestuff.h" |
| 34 | #include "gdb_termios.h" |
| 35 | |
| 36 | #ifdef HAVE_TERMIOS |
| 37 | |
| 38 | struct hardwire_ttystate |
| 39 | { |
| 40 | struct termios termios; |
| 41 | }; |
| 42 | |
| 43 | #ifdef CRTSCTS |
| 44 | /* Boolean to explicitly enable or disable h/w flow control. */ |
| 45 | static int serial_hwflow; |
| 46 | static void |
| 47 | show_serial_hwflow (struct ui_file *file, int from_tty, |
| 48 | struct cmd_list_element *c, const char *value) |
| 49 | { |
| 50 | fprintf_filtered (file, _("Hardware flow control is %s.\n"), value); |
| 51 | } |
| 52 | #endif |
| 53 | |
| 54 | #endif /* termios */ |
| 55 | |
| 56 | #ifdef HAVE_TERMIO |
| 57 | |
| 58 | /* It is believed that all systems which have added job control to SVR3 |
| 59 | (e.g. sco) have also added termios. Even if not, trying to figure out |
| 60 | all the variations (TIOCGPGRP vs. TCGETPGRP, etc.) would be pretty |
| 61 | bewildering. So we don't attempt it. */ |
| 62 | |
| 63 | struct hardwire_ttystate |
| 64 | { |
| 65 | struct termio termio; |
| 66 | }; |
| 67 | #endif /* termio */ |
| 68 | |
| 69 | #ifdef HAVE_SGTTY |
| 70 | struct hardwire_ttystate |
| 71 | { |
| 72 | struct sgttyb sgttyb; |
| 73 | struct tchars tc; |
| 74 | struct ltchars ltc; |
| 75 | /* Line discipline flags. */ |
| 76 | int lmode; |
| 77 | }; |
| 78 | #endif /* sgtty */ |
| 79 | |
| 80 | static int hardwire_open (struct serial *scb, const char *name); |
| 81 | static void hardwire_raw (struct serial *scb); |
| 82 | static int rate_to_code (int rate); |
| 83 | static int hardwire_setbaudrate (struct serial *scb, int rate); |
| 84 | static int hardwire_setparity (struct serial *scb, int parity); |
| 85 | static void hardwire_close (struct serial *scb); |
| 86 | static int get_tty_state (struct serial *scb, |
| 87 | struct hardwire_ttystate * state); |
| 88 | static int set_tty_state (struct serial *scb, |
| 89 | struct hardwire_ttystate * state); |
| 90 | static serial_ttystate hardwire_get_tty_state (struct serial *scb); |
| 91 | static int hardwire_set_tty_state (struct serial *scb, serial_ttystate state); |
| 92 | static int hardwire_noflush_set_tty_state (struct serial *, serial_ttystate, |
| 93 | serial_ttystate); |
| 94 | static void hardwire_print_tty_state (struct serial *, serial_ttystate, |
| 95 | struct ui_file *); |
| 96 | static int hardwire_drain_output (struct serial *); |
| 97 | static int hardwire_flush_output (struct serial *); |
| 98 | static int hardwire_flush_input (struct serial *); |
| 99 | static int hardwire_send_break (struct serial *); |
| 100 | static int hardwire_setstopbits (struct serial *, int); |
| 101 | |
| 102 | void _initialize_ser_hardwire (void); |
| 103 | |
| 104 | /* Open up a real live device for serial I/O. */ |
| 105 | |
| 106 | static int |
| 107 | hardwire_open (struct serial *scb, const char *name) |
| 108 | { |
| 109 | scb->fd = gdb_open_cloexec (name, O_RDWR, 0); |
| 110 | if (scb->fd < 0) |
| 111 | return -1; |
| 112 | |
| 113 | return 0; |
| 114 | } |
| 115 | |
| 116 | static int |
| 117 | get_tty_state (struct serial *scb, struct hardwire_ttystate *state) |
| 118 | { |
| 119 | #ifdef HAVE_TERMIOS |
| 120 | if (tcgetattr (scb->fd, &state->termios) < 0) |
| 121 | return -1; |
| 122 | |
| 123 | return 0; |
| 124 | #endif |
| 125 | |
| 126 | #ifdef HAVE_TERMIO |
| 127 | if (ioctl (scb->fd, TCGETA, &state->termio) < 0) |
| 128 | return -1; |
| 129 | return 0; |
| 130 | #endif |
| 131 | |
| 132 | #ifdef HAVE_SGTTY |
| 133 | if (ioctl (scb->fd, TIOCGETP, &state->sgttyb) < 0) |
| 134 | return -1; |
| 135 | if (ioctl (scb->fd, TIOCGETC, &state->tc) < 0) |
| 136 | return -1; |
| 137 | if (ioctl (scb->fd, TIOCGLTC, &state->ltc) < 0) |
| 138 | return -1; |
| 139 | if (ioctl (scb->fd, TIOCLGET, &state->lmode) < 0) |
| 140 | return -1; |
| 141 | |
| 142 | return 0; |
| 143 | #endif |
| 144 | } |
| 145 | |
| 146 | static int |
| 147 | set_tty_state (struct serial *scb, struct hardwire_ttystate *state) |
| 148 | { |
| 149 | #ifdef HAVE_TERMIOS |
| 150 | if (tcsetattr (scb->fd, TCSANOW, &state->termios) < 0) |
| 151 | return -1; |
| 152 | |
| 153 | return 0; |
| 154 | #endif |
| 155 | |
| 156 | #ifdef HAVE_TERMIO |
| 157 | if (ioctl (scb->fd, TCSETA, &state->termio) < 0) |
| 158 | return -1; |
| 159 | return 0; |
| 160 | #endif |
| 161 | |
| 162 | #ifdef HAVE_SGTTY |
| 163 | if (ioctl (scb->fd, TIOCSETN, &state->sgttyb) < 0) |
| 164 | return -1; |
| 165 | if (ioctl (scb->fd, TIOCSETC, &state->tc) < 0) |
| 166 | return -1; |
| 167 | if (ioctl (scb->fd, TIOCSLTC, &state->ltc) < 0) |
| 168 | return -1; |
| 169 | if (ioctl (scb->fd, TIOCLSET, &state->lmode) < 0) |
| 170 | return -1; |
| 171 | |
| 172 | return 0; |
| 173 | #endif |
| 174 | } |
| 175 | |
| 176 | static serial_ttystate |
| 177 | hardwire_get_tty_state (struct serial *scb) |
| 178 | { |
| 179 | struct hardwire_ttystate *state = XNEW (struct hardwire_ttystate); |
| 180 | |
| 181 | if (get_tty_state (scb, state)) |
| 182 | { |
| 183 | xfree (state); |
| 184 | return NULL; |
| 185 | } |
| 186 | |
| 187 | return (serial_ttystate) state; |
| 188 | } |
| 189 | |
| 190 | static serial_ttystate |
| 191 | hardwire_copy_tty_state (struct serial *scb, serial_ttystate ttystate) |
| 192 | { |
| 193 | struct hardwire_ttystate *state = XNEW (struct hardwire_ttystate); |
| 194 | |
| 195 | *state = *(struct hardwire_ttystate *) ttystate; |
| 196 | |
| 197 | return (serial_ttystate) state; |
| 198 | } |
| 199 | |
| 200 | static int |
| 201 | hardwire_set_tty_state (struct serial *scb, serial_ttystate ttystate) |
| 202 | { |
| 203 | struct hardwire_ttystate *state; |
| 204 | |
| 205 | state = (struct hardwire_ttystate *) ttystate; |
| 206 | |
| 207 | return set_tty_state (scb, state); |
| 208 | } |
| 209 | |
| 210 | static int |
| 211 | hardwire_noflush_set_tty_state (struct serial *scb, |
| 212 | serial_ttystate new_ttystate, |
| 213 | serial_ttystate old_ttystate) |
| 214 | { |
| 215 | struct hardwire_ttystate new_state; |
| 216 | #ifdef HAVE_SGTTY |
| 217 | struct hardwire_ttystate *state = (struct hardwire_ttystate *) old_ttystate; |
| 218 | #endif |
| 219 | |
| 220 | new_state = *(struct hardwire_ttystate *) new_ttystate; |
| 221 | |
| 222 | /* Don't change in or out of raw mode; we don't want to flush input. |
| 223 | termio and termios have no such restriction; for them flushing input |
| 224 | is separate from setting the attributes. */ |
| 225 | |
| 226 | #ifdef HAVE_SGTTY |
| 227 | if (state->sgttyb.sg_flags & RAW) |
| 228 | new_state.sgttyb.sg_flags |= RAW; |
| 229 | else |
| 230 | new_state.sgttyb.sg_flags &= ~RAW; |
| 231 | |
| 232 | /* I'm not sure whether this is necessary; the manpage just mentions |
| 233 | RAW not CBREAK. */ |
| 234 | if (state->sgttyb.sg_flags & CBREAK) |
| 235 | new_state.sgttyb.sg_flags |= CBREAK; |
| 236 | else |
| 237 | new_state.sgttyb.sg_flags &= ~CBREAK; |
| 238 | #endif |
| 239 | |
| 240 | return set_tty_state (scb, &new_state); |
| 241 | } |
| 242 | |
| 243 | static void |
| 244 | hardwire_print_tty_state (struct serial *scb, |
| 245 | serial_ttystate ttystate, |
| 246 | struct ui_file *stream) |
| 247 | { |
| 248 | struct hardwire_ttystate *state = (struct hardwire_ttystate *) ttystate; |
| 249 | int i; |
| 250 | |
| 251 | #ifdef HAVE_TERMIOS |
| 252 | fprintf_filtered (stream, "c_iflag = 0x%x, c_oflag = 0x%x,\n", |
| 253 | (int) state->termios.c_iflag, |
| 254 | (int) state->termios.c_oflag); |
| 255 | fprintf_filtered (stream, "c_cflag = 0x%x, c_lflag = 0x%x\n", |
| 256 | (int) state->termios.c_cflag, |
| 257 | (int) state->termios.c_lflag); |
| 258 | #if 0 |
| 259 | /* This not in POSIX, and is not really documented by those systems |
| 260 | which have it (at least not Sun). */ |
| 261 | fprintf_filtered (stream, "c_line = 0x%x.\n", state->termios.c_line); |
| 262 | #endif |
| 263 | fprintf_filtered (stream, "c_cc: "); |
| 264 | for (i = 0; i < NCCS; i += 1) |
| 265 | fprintf_filtered (stream, "0x%x ", state->termios.c_cc[i]); |
| 266 | fprintf_filtered (stream, "\n"); |
| 267 | #endif |
| 268 | |
| 269 | #ifdef HAVE_TERMIO |
| 270 | fprintf_filtered (stream, "c_iflag = 0x%x, c_oflag = 0x%x,\n", |
| 271 | state->termio.c_iflag, state->termio.c_oflag); |
| 272 | fprintf_filtered (stream, "c_cflag = 0x%x, c_lflag = 0x%x, c_line = 0x%x.\n", |
| 273 | state->termio.c_cflag, state->termio.c_lflag, |
| 274 | state->termio.c_line); |
| 275 | fprintf_filtered (stream, "c_cc: "); |
| 276 | for (i = 0; i < NCC; i += 1) |
| 277 | fprintf_filtered (stream, "0x%x ", state->termio.c_cc[i]); |
| 278 | fprintf_filtered (stream, "\n"); |
| 279 | #endif |
| 280 | |
| 281 | #ifdef HAVE_SGTTY |
| 282 | fprintf_filtered (stream, "sgttyb.sg_flags = 0x%x.\n", |
| 283 | state->sgttyb.sg_flags); |
| 284 | |
| 285 | fprintf_filtered (stream, "tchars: "); |
| 286 | for (i = 0; i < (int) sizeof (struct tchars); i++) |
| 287 | fprintf_filtered (stream, "0x%x ", ((unsigned char *) &state->tc)[i]); |
| 288 | fprintf_filtered (stream, "\n"); |
| 289 | |
| 290 | fprintf_filtered (stream, "ltchars: "); |
| 291 | for (i = 0; i < (int) sizeof (struct ltchars); i++) |
| 292 | fprintf_filtered (stream, "0x%x ", ((unsigned char *) &state->ltc)[i]); |
| 293 | fprintf_filtered (stream, "\n"); |
| 294 | |
| 295 | fprintf_filtered (stream, "lmode: 0x%x\n", state->lmode); |
| 296 | #endif |
| 297 | } |
| 298 | |
| 299 | /* Wait for the output to drain away, as opposed to flushing |
| 300 | (discarding) it. */ |
| 301 | |
| 302 | static int |
| 303 | hardwire_drain_output (struct serial *scb) |
| 304 | { |
| 305 | #ifdef HAVE_TERMIOS |
| 306 | return tcdrain (scb->fd); |
| 307 | #endif |
| 308 | |
| 309 | #ifdef HAVE_TERMIO |
| 310 | return ioctl (scb->fd, TCSBRK, 1); |
| 311 | #endif |
| 312 | |
| 313 | #ifdef HAVE_SGTTY |
| 314 | /* Get the current state and then restore it using TIOCSETP, |
| 315 | which should cause the output to drain and pending input |
| 316 | to be discarded. */ |
| 317 | { |
| 318 | struct hardwire_ttystate state; |
| 319 | |
| 320 | if (get_tty_state (scb, &state)) |
| 321 | { |
| 322 | return (-1); |
| 323 | } |
| 324 | else |
| 325 | { |
| 326 | return (ioctl (scb->fd, TIOCSETP, &state.sgttyb)); |
| 327 | } |
| 328 | } |
| 329 | #endif |
| 330 | } |
| 331 | |
| 332 | static int |
| 333 | hardwire_flush_output (struct serial *scb) |
| 334 | { |
| 335 | #ifdef HAVE_TERMIOS |
| 336 | return tcflush (scb->fd, TCOFLUSH); |
| 337 | #endif |
| 338 | |
| 339 | #ifdef HAVE_TERMIO |
| 340 | return ioctl (scb->fd, TCFLSH, 1); |
| 341 | #endif |
| 342 | |
| 343 | #ifdef HAVE_SGTTY |
| 344 | /* This flushes both input and output, but we can't do better. */ |
| 345 | return ioctl (scb->fd, TIOCFLUSH, 0); |
| 346 | #endif |
| 347 | } |
| 348 | |
| 349 | static int |
| 350 | hardwire_flush_input (struct serial *scb) |
| 351 | { |
| 352 | ser_base_flush_input (scb); |
| 353 | |
| 354 | #ifdef HAVE_TERMIOS |
| 355 | return tcflush (scb->fd, TCIFLUSH); |
| 356 | #endif |
| 357 | |
| 358 | #ifdef HAVE_TERMIO |
| 359 | return ioctl (scb->fd, TCFLSH, 0); |
| 360 | #endif |
| 361 | |
| 362 | #ifdef HAVE_SGTTY |
| 363 | /* This flushes both input and output, but we can't do better. */ |
| 364 | return ioctl (scb->fd, TIOCFLUSH, 0); |
| 365 | #endif |
| 366 | } |
| 367 | |
| 368 | static int |
| 369 | hardwire_send_break (struct serial *scb) |
| 370 | { |
| 371 | #ifdef HAVE_TERMIOS |
| 372 | return tcsendbreak (scb->fd, 0); |
| 373 | #endif |
| 374 | |
| 375 | #ifdef HAVE_TERMIO |
| 376 | return ioctl (scb->fd, TCSBRK, 0); |
| 377 | #endif |
| 378 | |
| 379 | #ifdef HAVE_SGTTY |
| 380 | { |
| 381 | int status; |
| 382 | |
| 383 | status = ioctl (scb->fd, TIOCSBRK, 0); |
| 384 | |
| 385 | /* Can't use usleep; it doesn't exist in BSD 4.2. */ |
| 386 | /* Note that if this gdb_select() is interrupted by a signal it will not |
| 387 | wait the full length of time. I think that is OK. */ |
| 388 | gdb_usleep (250000); |
| 389 | status = ioctl (scb->fd, TIOCCBRK, 0); |
| 390 | return status; |
| 391 | } |
| 392 | #endif |
| 393 | } |
| 394 | |
| 395 | static void |
| 396 | hardwire_raw (struct serial *scb) |
| 397 | { |
| 398 | struct hardwire_ttystate state; |
| 399 | |
| 400 | if (get_tty_state (scb, &state)) |
| 401 | fprintf_unfiltered (gdb_stderr, "get_tty_state failed: %s\n", |
| 402 | safe_strerror (errno)); |
| 403 | |
| 404 | #ifdef HAVE_TERMIOS |
| 405 | state.termios.c_iflag = 0; |
| 406 | state.termios.c_oflag = 0; |
| 407 | state.termios.c_lflag = 0; |
| 408 | state.termios.c_cflag &= ~CSIZE; |
| 409 | state.termios.c_cflag |= CLOCAL | CS8; |
| 410 | #ifdef CRTSCTS |
| 411 | /* h/w flow control. */ |
| 412 | if (serial_hwflow) |
| 413 | state.termios.c_cflag |= CRTSCTS; |
| 414 | else |
| 415 | state.termios.c_cflag &= ~CRTSCTS; |
| 416 | #ifdef CRTS_IFLOW |
| 417 | if (serial_hwflow) |
| 418 | state.termios.c_cflag |= CRTS_IFLOW; |
| 419 | else |
| 420 | state.termios.c_cflag &= ~CRTS_IFLOW; |
| 421 | #endif |
| 422 | #endif |
| 423 | state.termios.c_cc[VMIN] = 0; |
| 424 | state.termios.c_cc[VTIME] = 0; |
| 425 | #endif |
| 426 | |
| 427 | #ifdef HAVE_TERMIO |
| 428 | state.termio.c_iflag = 0; |
| 429 | state.termio.c_oflag = 0; |
| 430 | state.termio.c_lflag = 0; |
| 431 | state.termio.c_cflag &= ~CSIZE; |
| 432 | state.termio.c_cflag |= CLOCAL | CS8; |
| 433 | state.termio.c_cc[VMIN] = 0; |
| 434 | state.termio.c_cc[VTIME] = 0; |
| 435 | #endif |
| 436 | |
| 437 | #ifdef HAVE_SGTTY |
| 438 | state.sgttyb.sg_flags |= RAW | ANYP; |
| 439 | state.sgttyb.sg_flags &= ~(CBREAK | ECHO); |
| 440 | #endif |
| 441 | |
| 442 | if (set_tty_state (scb, &state)) |
| 443 | fprintf_unfiltered (gdb_stderr, "set_tty_state failed: %s\n", |
| 444 | safe_strerror (errno)); |
| 445 | } |
| 446 | |
| 447 | #ifndef B19200 |
| 448 | #define B19200 EXTA |
| 449 | #endif |
| 450 | |
| 451 | #ifndef B38400 |
| 452 | #define B38400 EXTB |
| 453 | #endif |
| 454 | |
| 455 | /* Translate baud rates from integers to damn B_codes. Unix should |
| 456 | have outgrown this crap years ago, but even POSIX wouldn't buck it. */ |
| 457 | |
| 458 | static struct |
| 459 | { |
| 460 | int rate; |
| 461 | int code; |
| 462 | } |
| 463 | baudtab[] = |
| 464 | { |
| 465 | { |
| 466 | 50, B50 |
| 467 | } |
| 468 | , |
| 469 | { |
| 470 | 75, B75 |
| 471 | } |
| 472 | , |
| 473 | { |
| 474 | 110, B110 |
| 475 | } |
| 476 | , |
| 477 | { |
| 478 | 134, B134 |
| 479 | } |
| 480 | , |
| 481 | { |
| 482 | 150, B150 |
| 483 | } |
| 484 | , |
| 485 | { |
| 486 | 200, B200 |
| 487 | } |
| 488 | , |
| 489 | { |
| 490 | 300, B300 |
| 491 | } |
| 492 | , |
| 493 | { |
| 494 | 600, B600 |
| 495 | } |
| 496 | , |
| 497 | { |
| 498 | 1200, B1200 |
| 499 | } |
| 500 | , |
| 501 | { |
| 502 | 1800, B1800 |
| 503 | } |
| 504 | , |
| 505 | { |
| 506 | 2400, B2400 |
| 507 | } |
| 508 | , |
| 509 | { |
| 510 | 4800, B4800 |
| 511 | } |
| 512 | , |
| 513 | { |
| 514 | 9600, B9600 |
| 515 | } |
| 516 | , |
| 517 | { |
| 518 | 19200, B19200 |
| 519 | } |
| 520 | , |
| 521 | { |
| 522 | 38400, B38400 |
| 523 | } |
| 524 | , |
| 525 | #ifdef B57600 |
| 526 | { |
| 527 | 57600, B57600 |
| 528 | } |
| 529 | , |
| 530 | #endif |
| 531 | #ifdef B115200 |
| 532 | { |
| 533 | 115200, B115200 |
| 534 | } |
| 535 | , |
| 536 | #endif |
| 537 | #ifdef B230400 |
| 538 | { |
| 539 | 230400, B230400 |
| 540 | } |
| 541 | , |
| 542 | #endif |
| 543 | #ifdef B460800 |
| 544 | { |
| 545 | 460800, B460800 |
| 546 | } |
| 547 | , |
| 548 | #endif |
| 549 | { |
| 550 | -1, -1 |
| 551 | } |
| 552 | , |
| 553 | }; |
| 554 | |
| 555 | static int |
| 556 | rate_to_code (int rate) |
| 557 | { |
| 558 | int i; |
| 559 | |
| 560 | for (i = 0; baudtab[i].rate != -1; i++) |
| 561 | { |
| 562 | /* test for perfect macth. */ |
| 563 | if (rate == baudtab[i].rate) |
| 564 | return baudtab[i].code; |
| 565 | else |
| 566 | { |
| 567 | /* check if it is in between valid values. */ |
| 568 | if (rate < baudtab[i].rate) |
| 569 | { |
| 570 | if (i) |
| 571 | { |
| 572 | warning (_("Invalid baud rate %d. " |
| 573 | "Closest values are %d and %d."), |
| 574 | rate, baudtab[i - 1].rate, baudtab[i].rate); |
| 575 | } |
| 576 | else |
| 577 | { |
| 578 | warning (_("Invalid baud rate %d. Minimum value is %d."), |
| 579 | rate, baudtab[0].rate); |
| 580 | } |
| 581 | return -1; |
| 582 | } |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | /* The requested speed was too large. */ |
| 587 | warning (_("Invalid baud rate %d. Maximum value is %d."), |
| 588 | rate, baudtab[i - 1].rate); |
| 589 | return -1; |
| 590 | } |
| 591 | |
| 592 | static int |
| 593 | hardwire_setbaudrate (struct serial *scb, int rate) |
| 594 | { |
| 595 | struct hardwire_ttystate state; |
| 596 | int baud_code = rate_to_code (rate); |
| 597 | |
| 598 | if (baud_code < 0) |
| 599 | { |
| 600 | /* The baud rate was not valid. |
| 601 | A warning has already been issued. */ |
| 602 | errno = EINVAL; |
| 603 | return -1; |
| 604 | } |
| 605 | |
| 606 | if (get_tty_state (scb, &state)) |
| 607 | return -1; |
| 608 | |
| 609 | #ifdef HAVE_TERMIOS |
| 610 | cfsetospeed (&state.termios, baud_code); |
| 611 | cfsetispeed (&state.termios, baud_code); |
| 612 | #endif |
| 613 | |
| 614 | #ifdef HAVE_TERMIO |
| 615 | #ifndef CIBAUD |
| 616 | #define CIBAUD CBAUD |
| 617 | #endif |
| 618 | |
| 619 | state.termio.c_cflag &= ~(CBAUD | CIBAUD); |
| 620 | state.termio.c_cflag |= baud_code; |
| 621 | #endif |
| 622 | |
| 623 | #ifdef HAVE_SGTTY |
| 624 | state.sgttyb.sg_ispeed = baud_code; |
| 625 | state.sgttyb.sg_ospeed = baud_code; |
| 626 | #endif |
| 627 | |
| 628 | return set_tty_state (scb, &state); |
| 629 | } |
| 630 | |
| 631 | static int |
| 632 | hardwire_setstopbits (struct serial *scb, int num) |
| 633 | { |
| 634 | struct hardwire_ttystate state; |
| 635 | int newbit; |
| 636 | |
| 637 | if (get_tty_state (scb, &state)) |
| 638 | return -1; |
| 639 | |
| 640 | switch (num) |
| 641 | { |
| 642 | case SERIAL_1_STOPBITS: |
| 643 | newbit = 0; |
| 644 | break; |
| 645 | case SERIAL_1_AND_A_HALF_STOPBITS: |
| 646 | case SERIAL_2_STOPBITS: |
| 647 | newbit = 1; |
| 648 | break; |
| 649 | default: |
| 650 | return 1; |
| 651 | } |
| 652 | |
| 653 | #ifdef HAVE_TERMIOS |
| 654 | if (!newbit) |
| 655 | state.termios.c_cflag &= ~CSTOPB; |
| 656 | else |
| 657 | state.termios.c_cflag |= CSTOPB; /* two bits */ |
| 658 | #endif |
| 659 | |
| 660 | #ifdef HAVE_TERMIO |
| 661 | if (!newbit) |
| 662 | state.termio.c_cflag &= ~CSTOPB; |
| 663 | else |
| 664 | state.termio.c_cflag |= CSTOPB; /* two bits */ |
| 665 | #endif |
| 666 | |
| 667 | #ifdef HAVE_SGTTY |
| 668 | return 0; /* sgtty doesn't support this */ |
| 669 | #endif |
| 670 | |
| 671 | return set_tty_state (scb, &state); |
| 672 | } |
| 673 | |
| 674 | /* Implement the "setparity" serial_ops callback. */ |
| 675 | |
| 676 | static int |
| 677 | hardwire_setparity (struct serial *scb, int parity) |
| 678 | { |
| 679 | struct hardwire_ttystate state; |
| 680 | int newparity = 0; |
| 681 | |
| 682 | if (get_tty_state (scb, &state)) |
| 683 | return -1; |
| 684 | |
| 685 | switch (parity) |
| 686 | { |
| 687 | case GDBPARITY_NONE: |
| 688 | newparity = 0; |
| 689 | break; |
| 690 | case GDBPARITY_ODD: |
| 691 | newparity = PARENB | PARODD; |
| 692 | break; |
| 693 | case GDBPARITY_EVEN: |
| 694 | newparity = PARENB; |
| 695 | break; |
| 696 | default: |
| 697 | internal_warning (__FILE__, __LINE__, |
| 698 | "Incorrect parity value: %d", parity); |
| 699 | return -1; |
| 700 | } |
| 701 | |
| 702 | #ifdef HAVE_TERMIOS |
| 703 | state.termios.c_cflag &= ~(PARENB | PARODD); |
| 704 | state.termios.c_cflag |= newparity; |
| 705 | #endif |
| 706 | |
| 707 | #ifdef HAVE_TERMIO |
| 708 | state.termio.c_cflag &= ~(PARENB | PARODD); |
| 709 | state.termio.c_cflag |= newparity; |
| 710 | #endif |
| 711 | |
| 712 | #ifdef HAVE_SGTTY |
| 713 | return 0; /* sgtty doesn't support this */ |
| 714 | #endif |
| 715 | return set_tty_state (scb, &state); |
| 716 | } |
| 717 | |
| 718 | |
| 719 | static void |
| 720 | hardwire_close (struct serial *scb) |
| 721 | { |
| 722 | if (scb->fd < 0) |
| 723 | return; |
| 724 | |
| 725 | close (scb->fd); |
| 726 | scb->fd = -1; |
| 727 | } |
| 728 | \f |
| 729 | \f |
| 730 | |
| 731 | /* The hardwire ops. */ |
| 732 | |
| 733 | static const struct serial_ops hardwire_ops = |
| 734 | { |
| 735 | "hardwire", |
| 736 | hardwire_open, |
| 737 | hardwire_close, |
| 738 | NULL, |
| 739 | ser_base_readchar, |
| 740 | ser_base_write, |
| 741 | hardwire_flush_output, |
| 742 | hardwire_flush_input, |
| 743 | hardwire_send_break, |
| 744 | hardwire_raw, |
| 745 | hardwire_get_tty_state, |
| 746 | hardwire_copy_tty_state, |
| 747 | hardwire_set_tty_state, |
| 748 | hardwire_print_tty_state, |
| 749 | hardwire_noflush_set_tty_state, |
| 750 | hardwire_setbaudrate, |
| 751 | hardwire_setstopbits, |
| 752 | hardwire_setparity, |
| 753 | hardwire_drain_output, |
| 754 | ser_base_async, |
| 755 | ser_unix_read_prim, |
| 756 | ser_unix_write_prim |
| 757 | }; |
| 758 | |
| 759 | void |
| 760 | _initialize_ser_hardwire (void) |
| 761 | { |
| 762 | serial_add_interface (&hardwire_ops); |
| 763 | |
| 764 | #ifdef HAVE_TERMIOS |
| 765 | #ifdef CRTSCTS |
| 766 | add_setshow_boolean_cmd ("remoteflow", no_class, |
| 767 | &serial_hwflow, _("\ |
| 768 | Set use of hardware flow control for remote serial I/O."), _("\ |
| 769 | Show use of hardware flow control for remote serial I/O."), _("\ |
| 770 | Enable or disable hardware flow control (RTS/CTS) on the serial port\n\ |
| 771 | when debugging using remote targets."), |
| 772 | NULL, |
| 773 | show_serial_hwflow, |
| 774 | &setlist, &showlist); |
| 775 | #endif |
| 776 | #endif |
| 777 | } |
| 778 | |
| 779 | int |
| 780 | ser_unix_read_prim (struct serial *scb, size_t count) |
| 781 | { |
| 782 | return read (scb->fd, scb->buf, count); |
| 783 | } |
| 784 | |
| 785 | int |
| 786 | ser_unix_write_prim (struct serial *scb, const void *buf, size_t len) |
| 787 | { |
| 788 | return write (scb->fd, buf, len); |
| 789 | } |