root / lab4 / .minix-src / include / x86 / psl.h @ 14
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1 | 13 | up20180614 | /* $NetBSD: psl.h,v 1.8 2012/10/04 21:23:45 dsl Exp $ */
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2 | |||
3 | /*-
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4 | * Copyright (c) 1990 The Regents of the University of California.
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5 | * All rights reserved.
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6 | *
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7 | * This code is derived from software contributed to Berkeley by
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8 | * William Jolitz.
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9 | *
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10 | * Redistribution and use in source and binary forms, with or without
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11 | * modification, are permitted provided that the following conditions
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12 | * are met:
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13 | * 1. Redistributions of source code must retain the above copyright
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14 | * notice, this list of conditions and the following disclaimer.
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15 | * 2. Redistributions in binary form must reproduce the above copyright
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16 | * notice, this list of conditions and the following disclaimer in the
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17 | * documentation and/or other materials provided with the distribution.
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18 | * 3. Neither the name of the University nor the names of its contributors
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19 | * may be used to endorse or promote products derived from this software
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20 | * without specific prior written permission.
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21 | *
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22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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32 | * SUCH DAMAGE.
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33 | *
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34 | * @(#)psl.h 5.2 (Berkeley) 1/18/91
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35 | */
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36 | |||
37 | #ifndef _X86_PSL_H_
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38 | #define _X86_PSL_H_
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39 | |||
40 | /*
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41 | * 386 processor status longword.
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42 | */
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43 | #define PSL_C 0x00000001 /* carry flag */ |
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44 | #define PSL_PF 0x00000004 /* parity flag */ |
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45 | #define PSL_AF 0x00000010 /* auxiliary carry flag */ |
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46 | #define PSL_Z 0x00000040 /* zero flag */ |
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47 | #define PSL_N 0x00000080 /* sign flag */ |
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48 | #define PSL_T 0x00000100 /* trap flag */ |
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49 | #define PSL_I 0x00000200 /* interrupt enable flag */ |
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50 | #define PSL_D 0x00000400 /* direction flag */ |
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51 | #define PSL_V 0x00000800 /* overflow flag */ |
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52 | #define PSL_IOPL 0x00003000 /* i/o privilege level */ |
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53 | #define PSL_NT 0x00004000 /* nested task */ |
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54 | #define PSL_RF 0x00010000 /* resume flag */ |
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55 | #define PSL_VM 0x00020000 /* virtual 8086 mode */ |
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56 | #define PSL_AC 0x00040000 /* alignment check flag */ |
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57 | #define PSL_VIF 0x00080000 /* virtual interrupt enable flag */ |
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58 | #define PSL_VIP 0x00100000 /* virtual interrupt pending flag */ |
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59 | #define PSL_ID 0x00200000 /* identification flag */ |
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60 | |||
61 | #define PSL_MBO 0x00000002 /* must be one bits */ |
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62 | #define PSL_MBZ 0xffc08028 /* must be zero bits */ |
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63 | |||
64 | #define PSL_USERSET (PSL_MBO | PSL_I)
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65 | #ifdef i386
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66 | #if defined(_KERNEL_OPT)
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67 | #include "opt_vm86.h" |
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68 | #endif
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69 | #endif
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70 | #ifdef VM86
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71 | #define PSL_USERSTATIC (PSL_MBO | PSL_MBZ | PSL_I | PSL_IOPL | PSL_NT | PSL_VIF | PSL_VIP)
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72 | #else
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73 | #define PSL_USERSTATIC (PSL_MBO | PSL_MBZ | PSL_I | PSL_IOPL | PSL_NT | PSL_VM | PSL_VIF | PSL_VIP)
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74 | #endif
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75 | #define PSL_USER (PSL_C | PSL_PF | PSL_AF | PSL_Z | PSL_N | \
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76 | PSL_T | PSL_V | PSL_D | PSL_AC) |
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77 | #define PSL_CLEARSIG (PSL_T | PSL_VM | PSL_AC | PSL_D)
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78 | |||
79 | |||
80 | /*
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81 | * ???
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82 | */
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83 | #ifdef _KERNEL
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84 | #include <machine/intr.h> |
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85 | #endif
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86 | |||
87 | #endif /* !_X86_PSL_H_ */ |