Project

General

Profile

Statistics
| Revision:

root / lab4 / .minix-src / include / x86 / psl.h @ 13

History | View | Annotate | Download (3.3 KB)

1
/*        $NetBSD: psl.h,v 1.8 2012/10/04 21:23:45 dsl Exp $        */
2

    
3
/*-
4
 * Copyright (c) 1990 The Regents of the University of California.
5
 * All rights reserved.
6
 *
7
 * This code is derived from software contributed to Berkeley by
8
 * William Jolitz.
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
 * 3. Neither the name of the University nor the names of its contributors
19
 *    may be used to endorse or promote products derived from this software
20
 *    without specific prior written permission.
21
 *
22
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32
 * SUCH DAMAGE.
33
 *
34
 *        @(#)psl.h        5.2 (Berkeley) 1/18/91
35
 */
36

    
37
#ifndef _X86_PSL_H_
38
#define _X86_PSL_H_
39

    
40
/*
41
 * 386 processor status longword.
42
 */
43
#define        PSL_C                0x00000001        /* carry flag */
44
#define        PSL_PF                0x00000004        /* parity flag */
45
#define        PSL_AF                0x00000010        /* auxiliary carry flag */
46
#define        PSL_Z                0x00000040        /* zero flag */
47
#define        PSL_N                0x00000080        /* sign flag */
48
#define        PSL_T                0x00000100        /* trap flag */
49
#define        PSL_I                0x00000200        /* interrupt enable flag */
50
#define        PSL_D                0x00000400        /* direction flag */
51
#define        PSL_V                0x00000800        /* overflow flag */
52
#define        PSL_IOPL        0x00003000        /* i/o privilege level */
53
#define        PSL_NT                0x00004000        /* nested task */
54
#define        PSL_RF                0x00010000        /* resume flag */
55
#define        PSL_VM                0x00020000        /* virtual 8086 mode */
56
#define        PSL_AC                0x00040000        /* alignment check flag */
57
#define        PSL_VIF                0x00080000        /* virtual interrupt enable flag */
58
#define        PSL_VIP                0x00100000        /* virtual interrupt pending flag */
59
#define        PSL_ID                0x00200000        /* identification flag */
60

    
61
#define        PSL_MBO                0x00000002        /* must be one bits */
62
#define        PSL_MBZ                0xffc08028        /* must be zero bits */
63

    
64
#define        PSL_USERSET        (PSL_MBO | PSL_I)
65
#ifdef i386
66
#if defined(_KERNEL_OPT)
67
#include "opt_vm86.h"
68
#endif
69
#endif
70
#ifdef VM86
71
#define        PSL_USERSTATIC        (PSL_MBO | PSL_MBZ | PSL_I | PSL_IOPL | PSL_NT | PSL_VIF | PSL_VIP)
72
#else
73
#define        PSL_USERSTATIC        (PSL_MBO | PSL_MBZ | PSL_I | PSL_IOPL | PSL_NT | PSL_VM | PSL_VIF | PSL_VIP)
74
#endif
75
#define PSL_USER        (PSL_C | PSL_PF | PSL_AF | PSL_Z | PSL_N | \
76
    PSL_T | PSL_V | PSL_D | PSL_AC)
77
#define        PSL_CLEARSIG        (PSL_T | PSL_VM | PSL_AC | PSL_D)
78

    
79

    
80
/*
81
 * ???
82
 */
83
#ifdef _KERNEL
84
#include <machine/intr.h>
85
#endif
86

    
87
#endif /* !_X86_PSL_H_ */