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- /* Remote serial support interface definitions for GDB, the GNU Debugger.
- Copyright 1992, 1993 Free Software Foundation, Inc.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #ifndef SERIAL_H
- #define SERIAL_H
-
- /* Terminal state pointer. This is specific to each type of interface. */
-
- typedef PTR serial_ttystate;
-
- struct _serial_t
- {
- int fd; /* File descriptor */
- struct serial_ops *ops; /* Function vector */
- serial_ttystate ttystate; /* Not used (yet) */
- int bufcnt; /* Amount of data in receive buffer */
- unsigned char *bufp; /* Current byte */
- unsigned char buf[BUFSIZ]; /* Da buffer itself */
- int current_timeout; /* (termio{s} only), last value of VTIME */
- /* ser-unix.c termio{,s} only, we still need to wait for this many more
- seconds. */
- int timeout_remaining;
- };
-
- typedef struct _serial_t *serial_t;
-
- struct serial_ops {
- char *name;
- struct serial_ops *next;
- int (*open) PARAMS ((serial_t, const char *name));
- void (*close) PARAMS ((serial_t));
- int (*readchar) PARAMS ((serial_t, int timeout));
- int (*write) PARAMS ((serial_t, const char *str, int len));
- int (*flush_output) PARAMS ((serial_t));
- int (*flush_input) PARAMS ((serial_t));
- int (*send_break) PARAMS ((serial_t));
- void (*go_raw) PARAMS ((serial_t));
- serial_ttystate (*get_tty_state) PARAMS ((serial_t));
- int (*set_tty_state) PARAMS ((serial_t, serial_ttystate));
- void (*print_tty_state) PARAMS ((serial_t, serial_ttystate));
- int (*noflush_set_tty_state)
- PARAMS ((serial_t, serial_ttystate, serial_ttystate));
- int (*setbaudrate) PARAMS ((serial_t, int rate));
- };
-
- /* Add a new serial interface to the interface list */
-
- void serial_add_interface PARAMS ((struct serial_ops *optable));
-
- serial_t serial_open PARAMS ((const char *name));
-
- serial_t serial_fdopen PARAMS ((const int fd));
-
- /* For most routines, if a failure is indicated, then errno should be
- examined. */
-
- /* Try to open NAME. Returns a new serial_t on success, NULL on failure.
- */
-
- #define SERIAL_OPEN(NAME) serial_open(NAME)
-
- /* Open a new serial stream using a file handle. */
-
- #define SERIAL_FDOPEN(FD) serial_fdopen(FD)
-
- /* Flush pending output. Might also flush input (if this system can't flush
- only output). */
-
- #define SERIAL_FLUSH_OUTPUT(SERIAL_T) \
- ((SERIAL_T)->ops->flush_output((SERIAL_T)))
-
- /* Flush pending input. Might also flush output (if this system can't flush
- only input). */
-
- #define SERIAL_FLUSH_INPUT(SERIAL_T)\
- ((*(SERIAL_T)->ops->flush_input) ((SERIAL_T)))
-
- /* Send a break between 0.25 and 0.5 seconds long. */
-
- #define SERIAL_SEND_BREAK(SERIAL_T) \
- ((*(SERIAL_T)->ops->send_break) (SERIAL_T))
-
- /* Turn the port into raw mode. */
-
- #define SERIAL_RAW(SERIAL_T) (SERIAL_T)->ops->go_raw((SERIAL_T))
-
- /* Return a pointer to a newly malloc'd ttystate containing the state
- of the tty. */
- #define SERIAL_GET_TTY_STATE(SERIAL_T) (SERIAL_T)->ops->get_tty_state((SERIAL_T))
-
- /* Set the state of the tty to TTYSTATE. The change is immediate.
- When changing to or from raw mode, input might be discarded.
- Returns 0 for success, negative value for error (in which case errno
- contains the error). */
- #define SERIAL_SET_TTY_STATE(SERIAL_T, TTYSTATE) (SERIAL_T)->ops->set_tty_state((SERIAL_T), (TTYSTATE))
-
- /* printf_filtered a user-comprehensible description of ttystate. */
- #define SERIAL_PRINT_TTY_STATE(SERIAL_T, TTYSTATE) \
- ((*((SERIAL_T)->ops->print_tty_state)) ((SERIAL_T), (TTYSTATE)))
-
- /* Set the tty state to NEW_TTYSTATE, where OLD_TTYSTATE is the
- current state (generally obtained from a recent call to
- SERIAL_GET_TTY_STATE), but be careful not to discard any input.
- This means that we never switch in or out of raw mode, even
- if NEW_TTYSTATE specifies a switch. */
- #define SERIAL_NOFLUSH_SET_TTY_STATE(SERIAL_T, NEW_TTYSTATE, OLD_TTYSTATE) \
- ((*((SERIAL_T)->ops->noflush_set_tty_state)) \
- ((SERIAL_T), (NEW_TTYSTATE), (OLD_TTYSTATE)))
-
- /* Read one char from the serial device with TIMEOUT seconds to wait
- or -1 to wait forever. Use timeout of 0 to effect a poll. Returns
- char if ok, else one of the following codes. Note that all error
- codes are guaranteed to be < 0. */
-
- #define SERIAL_ERROR -1 /* General error, see errno for details */
- #define SERIAL_TIMEOUT -2
- #define SERIAL_EOF -3
-
- #define SERIAL_READCHAR(SERIAL_T, TIMEOUT) ((SERIAL_T)->ops->readchar((SERIAL_T), TIMEOUT))
-
- /* Set the baudrate to the decimal value supplied. Returns 0 for success,
- -1 for failure. */
-
- #define SERIAL_SETBAUDRATE(SERIAL_T, RATE) ((SERIAL_T)->ops->setbaudrate((SERIAL_T), RATE))
-
- /* Write LEN chars from STRING to the port SERIAL_T. Returns 0 for
- success, non-zero for failure. */
-
- #define SERIAL_WRITE(SERIAL_T, STRING, LEN) ((SERIAL_T)->ops->write((SERIAL_T), STRING, LEN))
-
- /* Push out all buffers, close the device and destroy SERIAL_T. */
-
- void serial_close PARAMS ((serial_t));
-
- #define SERIAL_CLOSE(SERIAL_T) serial_close(SERIAL_T)
-
- /* Destroy SERIAL_T without doing the rest of the stuff that SERIAL_CLOSE
- does. */
-
- #define SERIAL_UN_FDOPEN(SERIAL_T) (free (SERIAL_T))
-
- #endif /* SERIAL_H */
-