mirror of
https://github.com/autc04/Retro68.git
synced 2024-12-11 19:49:32 +00:00
94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/*
|
|
* The authors hereby grant permission to use, copy, modify, distribute,
|
|
* and license this software and its documentation for any purpose, provided
|
|
* that existing copyright notices are retained in all copies and that this
|
|
* notice is included verbatim in any distributions. No written agreement,
|
|
* license, or royalty fee is required for any of the authorized uses.
|
|
* Modifications to this software may be copyrighted by their authors
|
|
* and need not follow the licensing terms described here, provided that
|
|
* the new terms are clearly indicated on the first page of each file where
|
|
* they apply.
|
|
*/
|
|
|
|
/************************************************************************
|
|
*
|
|
* excause.h
|
|
*
|
|
* (c) Copyright 2001-2003 Analog Devices, Inc. All rights reserved.
|
|
*
|
|
************************************************************************/
|
|
|
|
/*
|
|
** Definitions of constants for the four user-level bits in EXCAUSE,
|
|
** the field from SYSSTAT that is set when the EXCPT instruction is
|
|
** invoked.
|
|
*/
|
|
|
|
#ifndef _EXCAUSE_H
|
|
#define _EXCAUSE_H
|
|
|
|
/*
|
|
** Value 0x0 - exit program. (halt)
|
|
** R0 => exit status.
|
|
*/
|
|
|
|
#define EX_EXIT_PROG 0x0
|
|
|
|
/*
|
|
** Value 0x1 - abnormal exit (abort)
|
|
*/
|
|
|
|
#define EX_ABORT_PROG 0x1
|
|
|
|
/*
|
|
** Value 0x2 - invoke system service.
|
|
** R0 => command.
|
|
** R1 => first arg
|
|
** R2 => second arg
|
|
*/
|
|
|
|
#define EX_SYS_REQ 0x2
|
|
|
|
/*
|
|
** Available commands:
|
|
*/
|
|
|
|
#define EX_SYSREQ_NONE 0x00 /* Do nothing */
|
|
#define EX_SYSREQ_REG_ISR 0x01 /* Register an interrupt handler.
|
|
R1==EVT entry, R2==func ptr
|
|
Returns previous entry in R0. */
|
|
#define EX_SYSREQ_RAISE_INT 0x02 /* Cause an interrupt
|
|
R1 = int number */
|
|
/*
|
|
** Values 0x3 to 0x4 currently undefined.
|
|
*/
|
|
|
|
/*
|
|
** Value 0x5 - File I/O
|
|
** R0 => first arg
|
|
** R1 => second arg
|
|
** R2 => third arg
|
|
** R4 => command
|
|
** result => R0
|
|
*/
|
|
|
|
#define EX_FILE_IO 0x5
|
|
|
|
/*
|
|
** Available commands:
|
|
** XXX stdout/stderr are handled separately for writing.
|
|
*/
|
|
|
|
#define EX_FILEIO_OPEN 0x00 /* R0 => dev, R1=> path, R2=>mode */
|
|
#define EX_FILEIO_CLOSE 0x01 /* R0=> fid */
|
|
#define EX_FILEIO_WRITE 0x02 /* R0=>fid, R1=>data, R2=>length */
|
|
#define EX_FILEIO_READ 0x03 /* R0=>fid, R1=>data, R2=>length */
|
|
#define EX_FILEIO_SEEK 0x04 /* R0=>fid, R1=>offset, R2=>mode */
|
|
#define EX_FILEIO_DUP 0x05 /* R0=>fid */
|
|
|
|
/*
|
|
** Values 0x6 to 0xF currently undefined.
|
|
*/
|
|
|
|
#endif /* _EXCAUSE_H */
|