1/* $NetBSD: tss.h,v 1.5 2008/10/26 00:08:15 mrg Exp $ */
2
3/*
4 * Copyright (c) 2001 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Frank van der Linden for Wasabi Systems, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed for the NetBSD Project by
20 * Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 * or promote products derived from this software without specific prior
23 * written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#ifndef _AMD64_TSS_H_
39#define _AMD64_TSS_H_
40
41#ifdef __x86_64__
42
43/*
44 * TSS structure. Since TSS hw switching is not supported in long
45 * mode, this is mainly there for the I/O permission map in
46 * normal processes.
47 */
48
49struct x86_64_tss {
50 uint32_t tss_reserved1;
51 uint64_t tss_rsp0;
52 uint64_t tss_rsp1;
53 uint64_t tss_rsp3;
54 uint32_t tss_reserved2;
55 uint32_t tss_reserved3;
56 uint64_t tss_ist[7];
57 uint32_t tss_reserved4;
58 uint32_t tss_reserved5;
59 uint32_t tss_iobase;
60} __packed;
61
62/*
63 * I/O bitmap offset beyond TSS's segment limit means no bitmaps.
64 * (i.e. any I/O attempt generates an exception.)
65 */
66#define IOMAP_INVALOFF 0xffff
67
68#else /* __x86_64__ */
69
70#include <i386/tss.h>
71
72#endif /* __x86_64__ */
73
74#endif /* _AMD64_TSS_H_ */
75