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/*
* Copyright (c) 1995-1994 The University of Utah and
* the Computer Systems Laboratory at the University of Utah (CSL).
* All rights reserved.
*
* Permission to use, copy, modify and distribute this software is hereby
* granted provided that (1) source code retains these copyright, permission,
* and disclaimer notices, and (2) redistributions including binaries
* reproduce the notices in supporting documentation, and (3) all advertising
* materials mentioning features or use of this software display the following
* acknowledgement: ``This product includes software developed by the
* Computer Systems Laboratory at the University of Utah.''
*
* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* CSL requests users of this software to return to csl-dist@cs.utah.edu any
* improvements that they make and grant CSL redistribution rights.
*
* Author: Bryan Ford, University of Utah CSL
*/
#ifndef _I386_UTIL_CPU_H_
#define _I386_UTIL_CPU_H_
#include <mach/machine/tss.h>
#include "config.h"
#include "gdt.h"
#include "ldt.h"
#include "idt.h"
/*
* Multiprocessor i386/i486 systems use a separate copy of the
* GDT, IDT, LDT, and kernel TSS per processor. The first three
* are separate to avoid lock contention: the i386 uses locked
* memory cycles to access the descriptor tables. The TSS is
* separate since each processor needs its own kernel stack,
* and since using a TSS marks it busy.
*/
/* This structure holds the processor tables for this cpu. */
struct cpu_tables
{
struct i386_gate idt[IDTSZ];
struct i386_descriptor gdt[GDTSZ];
#ifdef ENABLE_KERNEL_LDT
struct i386_descriptor ldt[LDTSZ];
#endif
#ifdef ENABLE_KERNEL_TSS
struct i386_tss tss;
#endif
};
#include_next "cpu.h"
#endif _I386_UTIL_CPU_H_
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