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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /*
26: * Copyright (C) 1990, NeXT, Inc.
27: *
28: * File: next/kern_machdep.c
29: * Author: John Seamons
30: *
31: * Machine-specific kernel routines.
32: *
33: * 8-Dec-91 Peter King (king) at NeXT
34: * Added grade_cpu_subtype().
35: * FIXME: Do we want to merge this with check_cpu_subtype()?
36: *
37: * 5-Mar-90 John Seamons (jks) at NeXT
38: * Created.
39: */
40:
41: #import <sys/types.h>
42: #import <mach/machine.h>
43: #import <bsd/i386/cpu.h>
44:
45: check_cpu_subtype (cpu_subtype)
46: cpu_subtype_t cpu_subtype;
47: {
48: struct machine_slot *ms = &machine_slot[cpu_number()];
49:
50: switch (ms->cpu_subtype) {
51: case CPU_SUBTYPE_386:
52: if (cpu_subtype == CPU_SUBTYPE_386)
53: return (TRUE);
54: break;
55:
56: case CPU_SUBTYPE_486:
57: case CPU_SUBTYPE_486SX:
58: if ( cpu_subtype == CPU_SUBTYPE_486 ||
59: cpu_subtype == CPU_SUBTYPE_486SX ||
60: cpu_subtype == CPU_SUBTYPE_386 )
61: return (TRUE);
62: break;
63:
64: case CPU_SUBTYPE_586:
65: if ( cpu_subtype == CPU_SUBTYPE_586 ||
66: cpu_subtype == CPU_SUBTYPE_486 ||
67: cpu_subtype == CPU_SUBTYPE_486SX ||
68: cpu_subtype == CPU_SUBTYPE_386 )
69: return (TRUE);
70: break;
71:
72: default:
73: if ( CPU_SUBTYPE_INTEL_MODEL(cpu_subtype) ==
74: CPU_SUBTYPE_INTEL_MODEL_ALL) {
75: if ( CPU_SUBTYPE_INTEL_FAMILY(ms->cpu_subtype) >=
76: CPU_SUBTYPE_INTEL_FAMILY(cpu_subtype))
77: return (TRUE);
78: }
79: else {
80: if ( ms->cpu_subtype == cpu_subtype)
81: return (TRUE);
82: }
83: break;
84: }
85:
86: return (FALSE);
87: }
88:
89: /**********************************************************************
90: * Routine: grade_cpu_subtype()
91: *
92: * Function: Return a relative preference for cpu_subtypes in fat
93: * executable files. The higher the grade, the higher the
94: * preference. A grade of 0 means not acceptable.
95: **********************************************************************/
96: grade_cpu_subtype (cpu_subtype)
97: cpu_subtype_t cpu_subtype;
98: {
99: struct machine_slot *ms = &machine_slot[cpu_number()];
100:
101: switch (ms->cpu_subtype) {
102: case CPU_SUBTYPE_386:
103: switch (cpu_subtype) {
104: case CPU_SUBTYPE_386:
105: return 1;
106: default:
107: return 0;
108: }
109:
110: case CPU_SUBTYPE_486:
111: switch (cpu_subtype) {
112: case CPU_SUBTYPE_386:
113: return 1;
114:
115: case CPU_SUBTYPE_486SX:
116: return 2;
117:
118: case CPU_SUBTYPE_486:
119: return 3;
120:
121: default:
122: return 0;
123: }
124:
125: case CPU_SUBTYPE_486SX:
126: switch (cpu_subtype) {
127: case CPU_SUBTYPE_386:
128: return 1;
129:
130: case CPU_SUBTYPE_486:
131: return 2;
132:
133: case CPU_SUBTYPE_486SX:
134: return 3;
135:
136: default:
137: return 0;
138: }
139:
140: case CPU_SUBTYPE_586:
141: switch (cpu_subtype) {
142: case CPU_SUBTYPE_386:
143: return 1;
144:
145: case CPU_SUBTYPE_486SX:
146: return 2;
147:
148: case CPU_SUBTYPE_486:
149: return 3;
150:
151: case CPU_SUBTYPE_586:
152: return 4;
153:
154: default:
155: return 0;
156: }
157:
158: default:
159: if ( CPU_SUBTYPE_INTEL_MODEL(cpu_subtype) ==
160: CPU_SUBTYPE_INTEL_MODEL_ALL) {
161: if ( CPU_SUBTYPE_INTEL_FAMILY(ms->cpu_subtype) >=
162: CPU_SUBTYPE_INTEL_FAMILY(cpu_subtype))
163: return CPU_SUBTYPE_INTEL_FAMILY_MAX -
164: CPU_SUBTYPE_INTEL_FAMILY(ms->cpu_subtype) -
165: CPU_SUBTYPE_INTEL_FAMILY(cpu_subtype);
166: }
167: else {
168: if ( ms->cpu_subtype == cpu_subtype)
169: return CPU_SUBTYPE_INTEL_FAMILY_MAX + 1;
170: }
171: return 0;
172: }
173: }
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