minix/sys/arch/x86/include/pte.h
Ben Gras 1cd76c7513 sys/arch/x86/include updates
. primary purpose is to synchronize with <ieeefp.h> which
	  expects a fp_prec from sys/arch/x86/include/ieeefp.h
2013-01-15 12:14:01 +00:00

50 lines
2.1 KiB
C

/* $NetBSD: pte.h,v 1.1 2010/07/06 20:50:35 cegger Exp $ */
/*
* Copyright (c) 2010 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christoph Egger.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 _X86_PTE_H
#define _X86_PTE_H
/* Cacheability bits when we are using PAT */
#define PGC_WB 0 /* The default */
#define PGC_WC PG_WT /* WT and CD is WC */
#define PGC_UCMINUS PG_N /* UC but mtrr can override */
#define PGC_UC (PG_WT | PG_N) /* hard UC */
/*
* page protection exception bits
*/
#define PGEX_P 0x01 /* protection violation (vs. no mapping) */
#define PGEX_W 0x02 /* exception during a write cycle */
#define PGEX_U 0x04 /* exception while in user mode (upl) */
#define PGEX_X 0x10 /* exception during instruction fetch */
#endif /* _X86_PTE_H */