bsd/dev/i386/kern_machdep.c

   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) 1990,  NeXT, Inc.
  24  *
  25  *      File:   next/kern_machdep.c
  26  *      Author: John Seamons
  27  *
  28  *      Machine-specific kernel routines.
  29  */
  30
  31 #include        <sys/types.h>
  32 #include        <mach/machine.h>
  33 #include        <kern/cpu_number.h>
  34
  35 extern int grade_binary(cpu_type_t exectype, cpu_subtype_t execsubtype);
  36
  37 /**********************************************************************
  38  * Routine:     grade_binary()
  39  *
  40  * Function:    Return a relative preference for exectypes and
  41  *              execsubtypes in fat executable files.  The higher the
  42  *              grade, the higher the preference.  A grade of 0 means
  43  *              not acceptable.
  44  **********************************************************************/
  45 int
  46 grade_binary(__unused cpu_type_t exectype, cpu_subtype_t execsubtype)
  47 {
  48         int             cpusubtype = cpu_subtype();
  49
  50         switch (cpusubtype) {
  51             case CPU_SUBTYPE_386:
  52                 switch (execsubtype) {
  53                     case CPU_SUBTYPE_386:
  54                         return 1;
  55                     default:
  56                         return 0;
  57                 }
  58
  59             case CPU_SUBTYPE_486:
  60                 switch (execsubtype) {
  61                     case CPU_SUBTYPE_386:
  62                         return 1;
  63
  64                     case CPU_SUBTYPE_486SX:
  65                         return 2;
  66
  67                     case CPU_SUBTYPE_486:
  68                         return 3;
  69
  70                     default:
  71                         return 0;
  72                 }
  73
  74             case CPU_SUBTYPE_486SX:
  75                 switch (execsubtype) {
  76                     case CPU_SUBTYPE_386:
  77                         return 1;
  78
  79                     case CPU_SUBTYPE_486:
  80                         return 2;
  81
  82                     case CPU_SUBTYPE_486SX:
  83                         return 3;
  84
  85                     default:
  86                         return 0;
  87                 }
  88
  89             case CPU_SUBTYPE_586:
  90                 switch (execsubtype) {
  91                     case CPU_SUBTYPE_386:
  92                         return 1;
  93
  94                     case CPU_SUBTYPE_486SX:
  95                         return 2;
  96
  97                     case CPU_SUBTYPE_486:
  98                         return 3;
  99
 100                     case CPU_SUBTYPE_586:
 101                         return 4;
 102
 103                     default:
 104                         return 0;
 105                 }
 106
 107             default:
 108                 if (    CPU_SUBTYPE_INTEL_MODEL(execsubtype) ==
 109                         CPU_SUBTYPE_INTEL_MODEL_ALL) {
 110                     if (        CPU_SUBTYPE_INTEL_FAMILY(cpusubtype) >=
 111                                 CPU_SUBTYPE_INTEL_FAMILY(execsubtype))
 112                         return CPU_SUBTYPE_INTEL_FAMILY_MAX -
 113                             CPU_SUBTYPE_INTEL_FAMILY(cpusubtype) -
 114                             CPU_SUBTYPE_INTEL_FAMILY(execsubtype);
 115                 }
 116                 else {
 117                     if (        cpusubtype == execsubtype)
 118                         return CPU_SUBTYPE_INTEL_FAMILY_MAX + 1;
 119                 }
 120                 return 0;
 121         }
 122 }
 123
 124 extern void md_prepare_for_shutdown(int, int, char *);
 125
 126 void
 127 md_prepare_for_shutdown(
 128         __unused int paniced,
 129         __unused int howto,
 130         __unused char * command)
 131 {
 132 }