/* Remote serial support interface definitions for GDB, the GNU Debugger.
- Copyright 1992 Free Software Foundation, Inc.
+ Copyright 1992, 1993 Free Software Foundation, Inc.
This file is part of GDB.
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-#ifdef __GO32__
+#ifndef SERIAL_H
+#define SERIAL_H
-/* Then you use the asynctsr */
+/* Terminal state pointer. This is specific to each type of interface. */
-#else
-#ifdef HAVE_TERMIO
+typedef PTR serial_ttystate;
-#include <termios.h>
-#include <unistd.h>
-
-struct ttystate
+struct _serial_t
{
- int flags; /* Flags from fcntl F_GETFL */
- struct termios termios; /* old tty driver settings */
+ 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;
};
-#else /* not HAVE_TERMIO */
+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));
+};
-#include <sgtty.h>
+/* Add a new serial interface to the interface list */
-struct ttystate {
- int flags; /* Flags from fcntl F_GETFL */
- struct sgttyb sgttyb; /* old tty driver settings */
-};
+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. */
-#endif /* not HAVE_TERMIO */
-#endif
-/* Return a sensible default name for a serial device, something which
- can be used as an argument to serial_open. */
-
-const char *serial_default_name PARAMS ((void));
+#define SERIAL_RAW(SERIAL_T) (SERIAL_T)->ops->go_raw((SERIAL_T))
-/* Try to open the serial device "name", return 1 if ok, 0 if not. */
+/* 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))
-int serial_open PARAMS ((const char *name));
+/* 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))
-/* Turn the port into raw mode. */
+/* 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)))
-void serial_raw PARAMS ((int fd, struct ttystate *oldstate));
+/* 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)))
-/* Turn the port into normal mode. */
+/* 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. */
-void serial_normal PARAMS ((void));
+#define SERIAL_ERROR -1 /* General error, see errno for details */
+#define SERIAL_TIMEOUT -2
+#define SERIAL_EOF -3
-/* Read one char from the serial device with <TO>-second timeout.
- Returns char if ok, else EOF, -2 for timeout, -3 for anything else */
+#define SERIAL_READCHAR(SERIAL_T, TIMEOUT) ((SERIAL_T)->ops->readchar((SERIAL_T), TIMEOUT))
-int serial_readchar PARAMS ((int to));
+/* Set the baudrate to the decimal value supplied. Returns 0 for success,
+ -1 for failure. */
-/* Set the baudrate to the decimal value supplied, and return 1, or fail and
- return 0. */
+#define SERIAL_SETBAUDRATE(SERIAL_T, RATE) ((SERIAL_T)->ops->setbaudrate((SERIAL_T), RATE))
-int serial_setbaudrate PARAMS ((int rate));
+/* Write LEN chars from STRING to the port SERIAL_T. Returns 0 for
+ success, non-zero for failure. */
-/* Return the next rate in the sequence, or return 0 for failure. */
+#define SERIAL_WRITE(SERIAL_T, STRING, LEN) ((SERIAL_T)->ops->write((SERIAL_T), STRING, LEN))
-/* Write some chars to the device, returns 0 for failure. See errno for
- details. */
+/* Push out all buffers, close the device and destroy SERIAL_T. */
-int serial_write PARAMS ((const char *str, int len));
+void serial_close PARAMS ((serial_t));
-/* Close the serial port */
+#define SERIAL_CLOSE(SERIAL_T) serial_close(SERIAL_T)
-void serial_close PARAMS ((void));
+/* Destroy SERIAL_T without doing the rest of the stuff that SERIAL_CLOSE
+ does. */
-/* Restore the serial port to the state saved in oldstate */
+#define SERIAL_UN_FDOPEN(SERIAL_T) (free (SERIAL_T))
-void serial_restore PARAMS ((int desc, struct ttystate *oldstate));
+#endif /* SERIAL_H */
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