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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. */
/* Terminal state pointer. This is specific to each type of interface. */
typedef PTR ttystate;
struct _serial_t
{
int fd;
struct serial_ops *ops;
ttystate ttystate;
int bufcnt;
unsigned char *bufp;
unsigned char buf[BUFSIZ];
};
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));
void (*go_raw) PARAMS ((serial_t));
void (*restore) PARAMS ((serial_t));
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));
/* 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)
/* Turn the port into raw mode. */
#define SERIAL_RAW(SERIAL_T) (SERIAL_T)->ops->go_raw((SERIAL_T))
/* Read one char from the serial device with TIMEOUT seconds timeout.
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,
-1 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)
/* Restore the serial port to the state saved in oldstate. XXX - currently
unused! */
#define SERIAL_RESTORE(SERIAL_T) (SERIAL_T)->ops->restore((SERIAL_T))
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