EXTERNAL_HEADERS/architecture/i386/cpu.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1992 NeXT Computer, Inc.
  27  *
  28  * Intel386 Family:     Special processor registers.
  29  *
  30  * HISTORY
  31  *
  32  * 5 April 1992 ? at NeXT
  33  *      Created.
  34  */
  35
  36 /*
  37  * Control register 0
  38  */
  39
  40 typedef struct _cr0 {
  41     unsigned int        pe      :1,
  42                         mp      :1,
  43                         em      :1,
  44                         ts      :1,
  45                                 :1,
  46                         ne      :1,
  47                                 :10,
  48                         wp      :1,
  49                                 :1,
  50                         am      :1,
  51                                 :10,
  52                         nw      :1,
  53                         cd      :1,
  54                         pg      :1;
  55 } cr0_t;
  56
  57 /*
  58  * Debugging register 6
  59  */
  60
  61 typedef struct _dr6 {
  62     unsigned int        b0      :1,
  63                         b1      :1,
  64                         b2      :1,
  65                         b3      :1,
  66                                 :9,
  67                         bd      :1,
  68                         bs      :1,
  69                         bt      :1,
  70                                 :16;
  71 } dr6_t;