104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
/* Remote serial support interface definitions for GDB, the GNU Debugger.
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Copyright 1992, 1993 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Terminal state pointer. This is specific to each type of interface. */
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typedef PTR serial_ttystate;
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struct _serial_t
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{
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int fd; /* File descriptor */
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struct serial_ops *ops; /* Function vector */
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serial_ttystate ttystate; /* Not used (yet) */
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int bufcnt; /* Amount of data in receive buffer */
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unsigned char *bufp; /* Current byte */
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unsigned char buf[BUFSIZ]; /* Da buffer itself */
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int current_timeout; /* (termio{s} only), last value of VTIME */
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};
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typedef struct _serial_t *serial_t;
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struct serial_ops {
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char *name;
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struct serial_ops *next;
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int (*open) PARAMS ((serial_t, const char *name));
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void (*close) PARAMS ((serial_t));
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int (*readchar) PARAMS ((serial_t, int timeout));
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int (*write) PARAMS ((serial_t, const char *str, int len));
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void (*go_raw) PARAMS ((serial_t));
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serial_ttystate (*get_tty_state) PARAMS ((serial_t));
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int (*set_tty_state) PARAMS ((serial_t, serial_ttystate));
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int (*setbaudrate) PARAMS ((serial_t, int rate));
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};
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/* Add a new serial interface to the interface list */
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void serial_add_interface PARAMS ((struct serial_ops *optable));
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serial_t serial_open PARAMS ((const char *name));
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serial_t serial_fdopen PARAMS ((int fd));
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/* For most routines, if a failure is indicated, then errno should be
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examined. */
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/* Try to open NAME. Returns a new serial_t on success, NULL on failure.
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*/
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#define SERIAL_OPEN(NAME) serial_open(NAME)
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/* Open a new serial stream using a file handle. */
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#define SERIAL_FDOPEN(FD) serial_fdopen(FD)
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/* Turn the port into raw mode. */
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#define SERIAL_RAW(SERIAL_T) (SERIAL_T)->ops->go_raw((SERIAL_T))
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#define SERIAL_GET_TTY_STATE(SERIAL_T) (SERIAL_T)->ops->get_tty_state((SERIAL_T))
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#define SERIAL_SET_TTY_STATE(SERIAL_T, TTYSTATE) (SERIAL_T)->ops->set_tty_state((SERIAL_T), (TTYSTATE))
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/* Read one char from the serial device with TIMEOUT seconds timeout.
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Returns char if ok, else one of the following codes. Note that all
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error codes are guaranteed to be < 0. */
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#define SERIAL_ERROR -1 /* General error, see errno for details */
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#define SERIAL_TIMEOUT -2
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#define SERIAL_EOF -3
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#define SERIAL_READCHAR(SERIAL_T, TIMEOUT) ((SERIAL_T)->ops->readchar((SERIAL_T), TIMEOUT))
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/* Set the baudrate to the decimal value supplied. Returns 0 for success,
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-1 for failure. */
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#define SERIAL_SETBAUDRATE(SERIAL_T, RATE) ((SERIAL_T)->ops->setbaudrate((SERIAL_T), RATE))
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/* Write LEN chars from STRING to the port SERIAL_T. Returns 0 for success,
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-1 for failure. */
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#define SERIAL_WRITE(SERIAL_T, STRING, LEN) ((SERIAL_T)->ops->write((SERIAL_T), STRING, LEN))
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/* Push out all buffers, close the device and destroy SERIAL_T. */
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void serial_close PARAMS ((serial_t));
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#define SERIAL_CLOSE(SERIAL_T) serial_close(SERIAL_T)
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