common.inc

; Copyright (c) 2021 TK Chia
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions are
; met:
;
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;     notice, this list of conditions and the following disclaimer.
;   * 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.
;   * Neither the name of the developer(s) nor the names of its
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;     this software without specific prior written permission.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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%ifndef	_H_COMMON
%define	_H_COMMON

; Flags in the cr0 register.
CR0_PE	equ	(1 <<  0)
CR0_PG	equ	(1 << 31)

; Flags in the cr4 register.
CR4_PSE	equ	(1 <<  4)
CR4_PAE	equ	(1 <<  5)

; Model-specific register (MSR) no. for the Extended Feature Enable MSR
; (EFER), & flags in the EFER itself.
MSR_EFER equ	0xc0000080
EFER_LME equ	(1 <<  8)

%endif