sys/arch/amd64/include/gdt.h

   1 /*      $NetBSD: gdt.h,v 1.5 2008/04/28 20:23:12 martin Exp $   */
   2
   3 /*-
   4  * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by John T. Kohl and Charles M. Hannum.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _LOCORE
  33 struct proc;
  34 struct pmap;
  35
  36 void gdt_init(void);
  37 void gdt_init_cpu(struct cpu_info *);
  38 void gdt_reload_cpu(struct cpu_info *);
  39 void gdt_alloc_cpu(struct cpu_info *);
  40
  41 struct x86_64_tss;
  42 int tss_alloc(struct x86_64_tss *);
  43 void tss_free(int);
  44
  45 void ldt_alloc(struct pmap *, char *, size_t);
  46 void ldt_free(struct pmap *);
  47
  48 void set_mem_gdt(struct mem_segment_descriptor *, void *, size_t,
  49                  int, int, int, int, int);
  50 void set_sys_gdt(struct sys_segment_descriptor *, void *, size_t, int, int,
  51                  int);
  52 #endif
  53
  54 #define MINGDTSIZ       PAGE_SIZE
  55 #define MAXGDTSIZ       65536