[deliverable/binutils-gdb.git] / gdb / serial.h

/* 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 */
Commit	Line	Data
	1	/* Remote serial support interface definitions for GDB, the GNU Debugger.
	2	Copyright 1992, 1993 Free Software Foundation, Inc.
	3
	4	This file is part of GDB.
	5
	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2 of the License, or
	9	(at your option) any later version.
	10
	11	This program is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with this program; if not, write to the Free Software
	18	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	19
	20	#ifndef SERIAL_H
	21	#define SERIAL_H
	22
	23	/* Terminal state pointer. This is specific to each type of interface. */
	24
	25	typedef PTR serial_ttystate;
	26
	27	struct _serial_t
	28	{
	29	int fd; /* File descriptor */
	30	struct serial_ops ops; / Function vector */
	31	serial_ttystate ttystate; /* Not used (yet) */
	32	int bufcnt; /* Amount of data in receive buffer */
	33	unsigned char bufp; / Current byte */
	34	unsigned char buf[BUFSIZ]; /* Da buffer itself */
	35	int current_timeout; /* (termio{s} only), last value of VTIME */
	36	/* ser-unix.c termio{,s} only, we still need to wait for this many more
	37	seconds. */
	38	int timeout_remaining;
	39	char name; / The name of the device or host */
	40	struct _serial_t next; / Pointer to the next serial_t */
	41	int refcnt; /* Number of pointers to this block */
	42	};
	43
	44	typedef struct _serial_t *serial_t;
	45
	46	struct serial_ops {
	47	char *name;
	48	struct serial_ops *next;
	49	int (open) PARAMS ((serial_t, const char name));
	50	void (*close) PARAMS ((serial_t));
	51	int (*readchar) PARAMS ((serial_t, int timeout));
	52	int (write) PARAMS ((serial_t, const char str, int len));
	53	/* Discard pending output */
	54	int (*flush_output) PARAMS ((serial_t));
	55	/* Discard pending input */
	56	int (*flush_input) PARAMS ((serial_t));
	57	int (*send_break) PARAMS ((serial_t));
	58	void (*go_raw) PARAMS ((serial_t));
	59	serial_ttystate (*get_tty_state) PARAMS ((serial_t));
	60	int (*set_tty_state) PARAMS ((serial_t, serial_ttystate));
	61	void (*print_tty_state) PARAMS ((serial_t, serial_ttystate));
	62	int (*noflush_set_tty_state)
	63	PARAMS ((serial_t, serial_ttystate, serial_ttystate));
	64	int (*setbaudrate) PARAMS ((serial_t, int rate));
	65	int (*setstopbits) PARAMS ((serial_t, int num));
	66	/* Wait for output to drain */
	67	int (*drain_output) PARAMS ((serial_t));
	68	};
	69
	70	/* Add a new serial interface to the interface list */
	71
	72	void serial_add_interface PARAMS ((struct serial_ops *optable));
	73
	74	serial_t serial_open PARAMS ((const char *name));
	75
	76	serial_t serial_fdopen PARAMS ((const int fd));
	77
	78	/* For most routines, if a failure is indicated, then errno should be
	79	examined. */
	80
	81	/* Try to open NAME. Returns a new serial_t on success, NULL on failure.
	82	*/
	83
	84	#define SERIAL_OPEN(NAME) serial_open(NAME)
	85
	86	/* Open a new serial stream using a file handle. */
	87
	88	#define SERIAL_FDOPEN(FD) serial_fdopen(FD)
	89
	90	/* Allow pending output to drain. */
	91
	92	#define SERIAL_DRAIN_OUTPUT(SERIAL_T) \
	93	((SERIAL_T)->ops->drain_output((SERIAL_T)))
	94
	95	/* Flush (discard) pending output. Might also flush input (if this system can't flush
	96	only output). */
	97
	98	#define SERIAL_FLUSH_OUTPUT(SERIAL_T) \
	99	((SERIAL_T)->ops->flush_output((SERIAL_T)))
	100
	101	/* Flush pending input. Might also flush output (if this system can't flush
	102	only input). */
	103
	104	#define SERIAL_FLUSH_INPUT(SERIAL_T)\
	105	((*(SERIAL_T)->ops->flush_input) ((SERIAL_T)))
	106
	107	/* Send a break between 0.25 and 0.5 seconds long. */
	108
	109	extern int serial_send_break PARAMS ((serial_t scb));
	110
	111	#define SERIAL_SEND_BREAK(SERIAL_T) serial_send_break (SERIAL_T)
	112
	113	/* Turn the port into raw mode. */
	114
	115	#define SERIAL_RAW(SERIAL_T) (SERIAL_T)->ops->go_raw((SERIAL_T))
	116
	117	/* Return a pointer to a newly malloc'd ttystate containing the state
	118	of the tty. */
	119	#define SERIAL_GET_TTY_STATE(SERIAL_T) (SERIAL_T)->ops->get_tty_state((SERIAL_T))
	120
	121	/* Set the state of the tty to TTYSTATE. The change is immediate.
	122	When changing to or from raw mode, input might be discarded.
	123	Returns 0 for success, negative value for error (in which case errno
	124	contains the error). */
	125	#define SERIAL_SET_TTY_STATE(SERIAL_T, TTYSTATE) (SERIAL_T)->ops->set_tty_state((SERIAL_T), (TTYSTATE))
	126
	127	/* printf_filtered a user-comprehensible description of ttystate. */
	128	#define SERIAL_PRINT_TTY_STATE(SERIAL_T, TTYSTATE) \
	129	((*((SERIAL_T)->ops->print_tty_state)) ((SERIAL_T), (TTYSTATE)))
	130
	131	/* Set the tty state to NEW_TTYSTATE, where OLD_TTYSTATE is the
	132	current state (generally obtained from a recent call to
	133	SERIAL_GET_TTY_STATE), but be careful not to discard any input.
	134	This means that we never switch in or out of raw mode, even
	135	if NEW_TTYSTATE specifies a switch. */
	136	#define SERIAL_NOFLUSH_SET_TTY_STATE(SERIAL_T, NEW_TTYSTATE, OLD_TTYSTATE) \
	137	((*((SERIAL_T)->ops->noflush_set_tty_state)) \
	138	((SERIAL_T), (NEW_TTYSTATE), (OLD_TTYSTATE)))
	139
	140	/* Read one char from the serial device with TIMEOUT seconds to wait
	141	or -1 to wait forever. Use timeout of 0 to effect a poll. Returns
	142	char if ok, else one of the following codes. Note that all error
	143	codes are guaranteed to be < 0. */
	144
	145	#define SERIAL_ERROR -1 /* General error, see errno for details */
	146	#define SERIAL_TIMEOUT -2
	147	#define SERIAL_EOF -3
	148
	149	extern int serial_readchar PARAMS ((serial_t scb, int timeout));
	150
	151	#define SERIAL_READCHAR(SERIAL_T, TIMEOUT) serial_readchar (SERIAL_T, TIMEOUT)
	152
	153	/* Set the baudrate to the decimal value supplied. Returns 0 for success,
	154	-1 for failure. */
	155
	156	#define SERIAL_SETBAUDRATE(SERIAL_T, RATE) ((SERIAL_T)->ops->setbaudrate((SERIAL_T), RATE))
	157
	158	/* Set the number of stop bits to the value specified. Returns 0 for success,
	159	-1 for failure. */
	160
	161	#define SERIAL_1_STOPBITS 1
	162	#define SERIAL_1_AND_A_HALF_STOPBITS 2 /* 1.5 bits, snicker... */
	163	#define SERIAL_2_STOPBITS 3
	164
	165	#define SERIAL_SETSTOPBITS(SERIAL_T, NUM) ((SERIAL_T)->ops->setstopbits((SERIAL_T), NUM))
	166
	167	/* Write LEN chars from STRING to the port SERIAL_T. Returns 0 for
	168	success, non-zero for failure. */
	169
	170	extern int serial_write PARAMS ((serial_t scb, const char *str, int len));
	171
	172	#define SERIAL_WRITE(SERIAL_T, STRING,LEN) serial_write (SERIAL_T, STRING, LEN)
	173
	174	/* Push out all buffers, close the device and destroy SERIAL_T. */
	175
	176	extern void serial_close PARAMS ((serial_t, int));
	177
	178	#define SERIAL_CLOSE(SERIAL_T) serial_close(SERIAL_T, 1)
	179
	180	/* Push out all buffers and destroy SERIAL_T without closing the device. */
	181
	182	#define SERIAL_UN_FDOPEN(SERIAL_T) serial_close(SERIAL_T, 0)
	183
	184	extern void serial_printf PARAMS ((serial_t desc, const char *, ...))
	185	ATTR_FORMAT(printf, 2, 3);
	186
	187	/* File in which to record the remote debugging session */
	188
	189	extern void serial_log_command PARAMS ((const char *));
	190
	191	#endif /* SERIAL_H */