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/* $OpenBSD: gdt.h,v 1.4 2009/02/03 11:24:19 mikeb Exp $ */
/* $NetBSD: gdt.h,v 1.1 2003/04/26 18:39:40 fvdl Exp $ */
/*-
* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by John T. Kohl and Charles M. Hannum.
*
* 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 _LOCORE
struct proc;
struct pmap;
void gdt_init(void);
void gdt_init_cpu(struct cpu_info *);
void gdt_reload_cpu(struct cpu_info *);
void gdt_alloc_cpu(struct cpu_info *);
int tss_alloc(struct pcb *);
void tss_free(int);
void ldt_alloc(struct pmap *, char *, size_t);
void ldt_free(struct pmap *);
void set_mem_gdt(struct mem_segment_descriptor *, void *, size_t,
int, int, int, int, int);
void set_sys_gdt(struct sys_segment_descriptor *, void *, size_t, int, int,
int);
#endif
/*
* Maximum GDT size. It cannot exceed 65536 since the selector field of
* a descriptor is just 16 bits, and used as free list link.
*/
#define MAXGDTSIZ 65536
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