bsd/dev/i386/kern_machdep.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  *      Copyright (C) 1990,  NeXT, Inc.
  30  *
  31  *      File:   next/kern_machdep.c
  32  *      Author: John Seamons
  33  *
  34  *      Machine-specific kernel routines.
  35  */
  36
  37 #include        <sys/types.h>
  38 #include        <mach/machine.h>
  39 #include        <kern/cpu_number.h>
  40
  41 extern int grade_binary(cpu_type_t exectype, cpu_subtype_t execsubtype);
  42
  43 /**********************************************************************
  44  * Routine:     grade_binary()
  45  *
  46  * Function:    Return a relative preference for exectypes and
  47  *              execsubtypes in fat executable files.  The higher the
  48  *              grade, the higher the preference.  A grade of 0 means
  49  *              not acceptable.
  50  **********************************************************************/
  51 int
  52 grade_binary(__unused cpu_type_t exectype, cpu_subtype_t execsubtype)
  53 {
  54         int             cpusubtype = cpu_subtype();
  55
  56         switch (cpusubtype) {
  57             case CPU_SUBTYPE_386:
  58                 switch (execsubtype) {
  59                     case CPU_SUBTYPE_386:
  60                         return 1;
  61                     default:
  62                         return 0;
  63                 }
  64
  65             case CPU_SUBTYPE_486:
  66                 switch (execsubtype) {
  67                     case CPU_SUBTYPE_386:
  68                         return 1;
  69
  70                     case CPU_SUBTYPE_486SX:
  71                         return 2;
  72
  73                     case CPU_SUBTYPE_486:
  74                         return 3;
  75
  76                     default:
  77                         return 0;
  78                 }
  79
  80             case CPU_SUBTYPE_486SX:
  81                 switch (execsubtype) {
  82                     case CPU_SUBTYPE_386:
  83                         return 1;
  84
  85                     case CPU_SUBTYPE_486:
  86                         return 2;
  87
  88                     case CPU_SUBTYPE_486SX:
  89                         return 3;
  90
  91                     default:
  92                         return 0;
  93                 }
  94
  95             case CPU_SUBTYPE_586:
  96                 switch (execsubtype) {
  97                     case CPU_SUBTYPE_386:
  98                         return 1;
  99
 100                     case CPU_SUBTYPE_486SX:
 101                         return 2;
 102
 103                     case CPU_SUBTYPE_486:
 104                         return 3;
 105
 106                     case CPU_SUBTYPE_586:
 107                         return 4;
 108
 109                     default:
 110                         return 0;
 111                 }
 112
 113             default:
 114                 if (    CPU_SUBTYPE_INTEL_MODEL(execsubtype) ==
 115                         CPU_SUBTYPE_INTEL_MODEL_ALL) {
 116                     if (        CPU_SUBTYPE_INTEL_FAMILY(cpusubtype) >=
 117                                 CPU_SUBTYPE_INTEL_FAMILY(execsubtype))
 118                         return CPU_SUBTYPE_INTEL_FAMILY_MAX -
 119                             CPU_SUBTYPE_INTEL_FAMILY(cpusubtype) -
 120                             CPU_SUBTYPE_INTEL_FAMILY(execsubtype);
 121                 }
 122                 else {
 123                     if (        cpusubtype == execsubtype)
 124                         return CPU_SUBTYPE_INTEL_FAMILY_MAX + 1;
 125                 }
 126                 return 0;
 127         }
 128 }
 129
 130 extern void md_prepare_for_shutdown(int, int, char *);
 131
 132 void
 133 md_prepare_for_shutdown(
 134         __unused int paniced,
 135         __unused int howto,
 136         __unused char * command)
 137 {
 138 }