block_io.h   [plain text]


/******************************************************************
	Copyright 1990, 1992 Free Software Foundation, Inc.

	This code was donated by Intel Corp.

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   distribute this software and its documentation.  Intel grants
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   addition, Intel grants this permission provided that you
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   Intel Corporation not be used in advertising or publicity 
   pertaining to distribution of the software or the documentation 
   without specific, written prior permission.  

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/******************************************************************/

/*****************************************************************************
 * Structures and definitions supporting NINDY requests for services by a
 * remote host.  Used by NINDY monitor, library libnin, comm960, gdb960,
 * etc.  Also contains some defines for NINDY console I/O requests.
 *****************************************************************************/

/* the following four are hardware dependent */
#define	BIT_16		short
#define	BIT_32		int
#define	UBIT_16		unsigned short
#define	UBIT_32		unsigned int

/* Service request numbers -- these are the services that can be asked of the
 * host.
 */
#define BS_ACCESS	0x10
#define BS_CLOSE	0x20
#define BS_CREAT	0x30
#define BS_SEEK		0x40
#define BS_OPEN		0x50
#define BS_READ		0x60
#define BS_STAT		0x70
#define BS_SYSTEMD	0x80
#define BS_TIME		0x90
#define BS_UNMASK	0xa0
#define BS_UNLINK	0xb0
#define BS_WRITE	0xc0


/* Maximum number of arguments to any of the above service requests
 * (in addition to the request number).
 */
#define MAX_SRQ_ARGS    3

/* Number of bytes of data that can be read or written by a single I/O request
 */
#define BUFSIZE		1024

/* NINDY console I/O requests:  CO sends a single character to stdout,
 * CI reads one.
 */
#define CI 		0
#define CO 		1