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  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1992 NeXT Computer, Inc.
  24  *
  25  * Intel386 Family:     Special processor registers.
  26  *
  27  * HISTORY
  28  *
  29  * 5 April 1992 ? at NeXT
  30  *      Created.
  31  */
  32
  33 /*
  34  * Control register 0
  35  */
  36
  37 typedef struct _cr0 {
  38     unsigned int        pe      :1,
  39                         mp      :1,
  40                         em      :1,
  41                         ts      :1,
  42                                 :1,
  43                         ne      :1,
  44                                 :10,
  45                         wp      :1,
  46                                 :1,
  47                         am      :1,
  48                                 :10,
  49                         nw      :1,
  50                         cd      :1,
  51                         pg      :1;
  52 } cr0_t;
  53
  54 /*
  55  * Debugging register 6
  56  */
  57
  58 typedef struct _dr6 {
  59     unsigned int        b0      :1,
  60                         b1      :1,
  61                         b2      :1,
  62                         b3      :1,
  63                                 :9,
  64                         bd      :1,
  65                         bs      :1,
  66                         bt      :1,
  67                                 :16;
  68 } dr6_t;