registers.h

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/* SPDX-License-Identifier: BSD-2-Clause */

 
/*
 *  COPYRIGHT (c) 1998 valette@crf.canon.fr
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef _RTEMS_SCORE_REGISTERS_H
#define _RTEMS_SCORE_REGISTERS_H
 
/*
 * definition related to EFLAGS
 */
#define EFLAGS_CARRY            0x1
#define EFLAGS_PARITY           0x4
 
#define EFLAGS_AUX_CARRY        0x10
#define EFLAGS_ZERO         0x40
#define EFLAGS_SIGN         0x80
 
#define EFLAGS_TRAP         0x100
#define EFLAGS_INTR_ENABLE      0x200
#define EFLAGS_DIRECTION        0x400
#define EFLAGS_OVERFLOW         0x800
 
#define EFLAGS_IOPL_MASK        0x3000
#define EFLAGS_NESTED_TASK      0x8000
 
#define EFLAGS_RESUME           0x10000
#define EFLAGS_VIRTUAL_MODE     0x20000
#define EFLAGS_ALIGN_CHECK      0x40000
#define EFLAGS_VIRTUAL_INTR     0x80000
 
#define EFLAGS_VIRTUAL_INTR_PEND    0x100000
#define EFLAGS_ID           0x200000
 
/*
 * definitions related to CR0
 */
#define CR0_PROTECTION_ENABLE       0x1
#define CR0_MONITOR_COPROC      0x2
#define CR0_COPROC_SOFT_EMUL        0x4
#define CR0_FLOATING_INSTR_EXCEPTION    0x8
 
#define CR0_EXTENSION_TYPE      0x10
#define CR0_NUMERIC_ERROR       0x20
 
#define CR0_WRITE_PROTECT       0x10000
#define CR0_ALIGMENT_MASK       0x40000
 
#define CR0_NO_WRITE_THROUGH        0x20000000
#define CR0_PAGE_LEVEL_CACHE_DISABLE    0x40000000
#define CR0_PAGING          0x80000000
 
/*
 * definitions related to CR3
 */
 
#define CR3_PAGE_CACHE_DISABLE      0x10
#define CR3_PAGE_WRITE_THROUGH      0x8
#define CR3_PAGE_DIRECTORY_MASK     0xFFFFF000
 
#endif