registers.h

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/*
 *  COPYRIGHT (c) 1998 valette@crf.canon.fr
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.org/license/LICENSE.
 */

#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