sys/arch/x86/include/psl.h

   1 /*      $NetBSD: psl.h,v 1.5 2008/09/18 15:57:04 christos 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 #if defined(_KERNEL_OPT)
  66 #include "opt_vm86.h"
  67 #endif
  68 #ifdef VM86
  69 #define PSL_USERSTATIC  (PSL_MBO | PSL_MBZ | PSL_I | PSL_IOPL | PSL_NT | PSL_VIF | PSL_VIP)
  70 #else
  71 #define PSL_USERSTATIC  (PSL_MBO | PSL_MBZ | PSL_I | PSL_IOPL | PSL_NT | PSL_VM | PSL_VIF | PSL_VIP)
  72 #endif
  73 #define PSL_USER        (PSL_C | PSL_PF | PSL_AF | PSL_Z | PSL_N | \
  74     PSL_T | PSL_V | PSL_D)
  75 #define PSL_CLEARSIG    (PSL_T | PSL_VM | PSL_AC | PSL_D)
  76
  77
  78 /*
  79  * ???
  80  */
  81 #ifdef _KERNEL
  82 #include <machine/intr.h>
  83 #endif
  84
  85 #endif /* !_X86_PSL_H_ */