Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 191 insertions, 0 deletions

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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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;
+  char *name;			/* The name of the device or host */
+  struct _serial_t *next;	/* Pointer to the next serial_t */
+  int refcnt;			/* Number of pointers to this block */
+};
+
+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));
+  /* Discard pending output */
+  int (*flush_output) PARAMS ((serial_t));
+  /* Discard pending input */
+  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));
+  int (*setstopbits) PARAMS ((serial_t, int num));
+  /* Wait for output to drain */
+  int (*drain_output) PARAMS ((serial_t));
+};
+
+/* 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)
+
+/* Allow pending output to drain. */
+
+#define SERIAL_DRAIN_OUTPUT(SERIAL_T) \
+  ((SERIAL_T)->ops->drain_output((SERIAL_T)))
+  
+/* Flush (discard) 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.  */
+
+extern int serial_send_break PARAMS ((serial_t scb));
+
+#define SERIAL_SEND_BREAK(SERIAL_T) serial_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
+
+extern int serial_readchar PARAMS ((serial_t scb, int timeout));
+
+#define SERIAL_READCHAR(SERIAL_T, TIMEOUT)  serial_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))
+
+/* Set the number of stop bits to the value specified.  Returns 0 for success,
+   -1 for failure.  */
+
+#define SERIAL_1_STOPBITS 1
+#define SERIAL_1_AND_A_HALF_STOPBITS 2 /* 1.5 bits, snicker... */
+#define SERIAL_2_STOPBITS 3
+
+#define SERIAL_SETSTOPBITS(SERIAL_T, NUM) ((SERIAL_T)->ops->setstopbits((SERIAL_T), NUM))
+
+/* Write LEN chars from STRING to the port SERIAL_T.  Returns 0 for
+   success, non-zero for failure.  */
+
+extern int serial_write PARAMS ((serial_t scb, const char *str, int len));
+
+#define SERIAL_WRITE(SERIAL_T, STRING,LEN)  serial_write (SERIAL_T, STRING, LEN)
+
+/* Push out all buffers, close the device and destroy SERIAL_T. */
+
+extern void serial_close PARAMS ((serial_t, int));
+
+#define SERIAL_CLOSE(SERIAL_T) serial_close(SERIAL_T, 1)
+
+/* Push out all buffers and destroy SERIAL_T without closing the device.  */
+
+#define SERIAL_UN_FDOPEN(SERIAL_T) serial_close(SERIAL_T, 0)
+
+extern void serial_printf PARAMS ((serial_t desc, const char *, ...))
+     ATTR_FORMAT(printf, 2, 3);
+
+/* File in which to record the remote debugging session */
+
+extern void serial_log_command PARAMS ((const char *));
+
+#endif /* SERIAL_H */