[apple/xnu.git] / bsd / dev / i386 / kern_machdep.c

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 *	Copyright (C) 1990,  NeXT, Inc.
 *
 *	File:	next/kern_machdep.c
 *	Author:	John Seamons
 *
 *	Machine-specific kernel routines.
 *
 *  8-Dec-91  Peter King (king) at NeXT
 *	Added grade_cpu_subtype().
 *	FIXME: Do we want to merge this with check_cpu_subtype()?
 *
 *  5-Mar-90  John Seamons (jks) at NeXT
 *	Created.
 */

#include	<sys/types.h>
#include	<mach/machine.h>
#include	<kern/cpu_number.h>

check_cpu_subtype (cpu_subtype)
	cpu_subtype_t cpu_subtype;
{
	struct machine_slot *ms = &machine_slot[cpu_number()];
	
	switch (ms->cpu_subtype) {
	    case CPU_SUBTYPE_386:
		if (cpu_subtype == CPU_SUBTYPE_386)
		    return (TRUE);
		break;

	    case CPU_SUBTYPE_486:
	    case CPU_SUBTYPE_486SX:
		if (	cpu_subtype == CPU_SUBTYPE_486		||
			cpu_subtype == CPU_SUBTYPE_486SX	||
			cpu_subtype == CPU_SUBTYPE_386		)
		    return (TRUE);
		break;

	    case CPU_SUBTYPE_586:
		if (	cpu_subtype == CPU_SUBTYPE_586		||
			cpu_subtype == CPU_SUBTYPE_486		||
			cpu_subtype == CPU_SUBTYPE_486SX	||
			cpu_subtype == CPU_SUBTYPE_386		)
		    return (TRUE);
		break;

	    default:
		if (	CPU_SUBTYPE_INTEL_MODEL(cpu_subtype) ==
			CPU_SUBTYPE_INTEL_MODEL_ALL) {
		    if (	CPU_SUBTYPE_INTEL_FAMILY(ms->cpu_subtype) >=
				CPU_SUBTYPE_INTEL_FAMILY(cpu_subtype))
			return (TRUE);
		}
		else {
		    if (	ms->cpu_subtype == cpu_subtype)
			return (TRUE);
		}
		break;
	}

	return (FALSE);
}

/**********************************************************************
 * Routine:	grade_cpu_subtype()
 *
 * Function:	Return a relative preference for cpu_subtypes in fat
 *		executable files.  The higher the grade, the higher the
 *		preference.  A grade of 0 means not acceptable.
 **********************************************************************/
grade_cpu_subtype (cpu_subtype)
	cpu_subtype_t		cpu_subtype;
{
	struct machine_slot	*ms = &machine_slot[cpu_number()];

	switch (ms->cpu_subtype) {
	    case CPU_SUBTYPE_386:
		switch (cpu_subtype) {
		    case CPU_SUBTYPE_386:
			return 1;
		    default:
			return 0;
		}

	    case CPU_SUBTYPE_486:
		switch (cpu_subtype) {
		    case CPU_SUBTYPE_386:
			return 1;

		    case CPU_SUBTYPE_486SX:
			return 2;

		    case CPU_SUBTYPE_486:
			return 3;

		    default:
			return 0;
		}

	    case CPU_SUBTYPE_486SX:
		switch (cpu_subtype) {
		    case CPU_SUBTYPE_386:
			return 1;

		    case CPU_SUBTYPE_486:
			return 2;

		    case CPU_SUBTYPE_486SX:
			return 3;

		    default:
			return 0;
		}

	    case CPU_SUBTYPE_586:
		switch (cpu_subtype) {
		    case CPU_SUBTYPE_386:
			return 1;

		    case CPU_SUBTYPE_486SX:
			return 2;

		    case CPU_SUBTYPE_486:
			return 3;

		    case CPU_SUBTYPE_586:
			return 4;

		    default:
			return 0;
		}

	    default:
		if (	CPU_SUBTYPE_INTEL_MODEL(cpu_subtype) ==
		    	CPU_SUBTYPE_INTEL_MODEL_ALL) {
		    if (	CPU_SUBTYPE_INTEL_FAMILY(ms->cpu_subtype) >=
				CPU_SUBTYPE_INTEL_FAMILY(cpu_subtype))
			return CPU_SUBTYPE_INTEL_FAMILY_MAX - 
			    CPU_SUBTYPE_INTEL_FAMILY(ms->cpu_subtype) -
			    CPU_SUBTYPE_INTEL_FAMILY(cpu_subtype);
		}
		else {
		    if (	ms->cpu_subtype == cpu_subtype)
			return CPU_SUBTYPE_INTEL_FAMILY_MAX + 1;
		}
		return 0;
	}
}
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
de355530 A	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.
1c79356b	11	*
de355530 A	12	* This Original Code and all software distributed under the License are
de355530 A	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
de355530 A	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.
1c79356b A	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	* 8-Dec-91 Peter King (king) at NeXT
	31	* Added grade_cpu_subtype().
	32	* FIXME: Do we want to merge this with check_cpu_subtype()?
	33	*
	34	* 5-Mar-90 John Seamons (jks) at NeXT
	35	* Created.
	36	*/
	37
	38	#include <sys/types.h>
	39	#include <mach/machine.h>
	40	#include <kern/cpu_number.h>
	41
	42	check_cpu_subtype (cpu_subtype)
	43	cpu_subtype_t cpu_subtype;
	44	{
	45	struct machine_slot *ms = &machine_slot[cpu_number()];
	46
	47	switch (ms->cpu_subtype) {
	48	case CPU_SUBTYPE_386:
	49	if (cpu_subtype == CPU_SUBTYPE_386)
	50	return (TRUE);
	51	break;
	52
	53	case CPU_SUBTYPE_486:
	54	case CPU_SUBTYPE_486SX:
	55	if ( cpu_subtype == CPU_SUBTYPE_486 \|\|
	56	cpu_subtype == CPU_SUBTYPE_486SX \|\|
	57	cpu_subtype == CPU_SUBTYPE_386 )
	58	return (TRUE);
	59	break;
	60
	61	case CPU_SUBTYPE_586:
	62	if ( cpu_subtype == CPU_SUBTYPE_586 \|\|
	63	cpu_subtype == CPU_SUBTYPE_486 \|\|
	64	cpu_subtype == CPU_SUBTYPE_486SX \|\|
	65	cpu_subtype == CPU_SUBTYPE_386 )
	66	return (TRUE);
	67	break;
	68
	69	default:
	70	if ( CPU_SUBTYPE_INTEL_MODEL(cpu_subtype) ==
	71	CPU_SUBTYPE_INTEL_MODEL_ALL) {
	72	if ( CPU_SUBTYPE_INTEL_FAMILY(ms->cpu_subtype) >=
	73	CPU_SUBTYPE_INTEL_FAMILY(cpu_subtype))
	74	return (TRUE);
	75	}
	76	else {
	77	if ( ms->cpu_subtype == cpu_subtype)
	78	return (TRUE);
	79	}
	80	break;
	81	}
	82
83	return (FALSE);
84	}
85
86	/**********************************************************************
87	* Routine: grade_cpu_subtype()
88	*
89	* Function: Return a relative preference for cpu_subtypes in fat
90	* executable files. The higher the grade, the higher the
91	* preference. A grade of 0 means not acceptable.
92	**********************************************************************/
93	grade_cpu_subtype (cpu_subtype)
94	cpu_subtype_t cpu_subtype;
95	{
96	struct machine_slot *ms = &machine_slot[cpu_number()];
97
98	switch (ms->cpu_subtype) {
99	case CPU_SUBTYPE_386:
100	switch (cpu_subtype) {
101	case CPU_SUBTYPE_386:
102	return 1;
103	default:
104	return 0;
105	}
106
107	case CPU_SUBTYPE_486:
108	switch (cpu_subtype) {
109	case CPU_SUBTYPE_386:
110	return 1;
111
112	case CPU_SUBTYPE_486SX:
113	return 2;
114
115	case CPU_SUBTYPE_486:
116	return 3;
117
118	default:
119	return 0;
120	}
121
122	case CPU_SUBTYPE_486SX:
123	switch (cpu_subtype) {
124	case CPU_SUBTYPE_386:
125	return 1;
126
127	case CPU_SUBTYPE_486:
128	return 2;
129
130	case CPU_SUBTYPE_486SX:
131	return 3;
132
133	default:
134	return 0;
135	}
136
137	case CPU_SUBTYPE_586:
138	switch (cpu_subtype) {
139	case CPU_SUBTYPE_386:
140	return 1;
141
142	case CPU_SUBTYPE_486SX:
143	return 2;
144
145	case CPU_SUBTYPE_486:
146	return 3;
147
148	case CPU_SUBTYPE_586:
149	return 4;
150
151	default:
152	return 0;
153	}
154
155	default:
156	if ( CPU_SUBTYPE_INTEL_MODEL(cpu_subtype) ==
157	CPU_SUBTYPE_INTEL_MODEL_ALL) {
158	if ( CPU_SUBTYPE_INTEL_FAMILY(ms->cpu_subtype) >=
159	CPU_SUBTYPE_INTEL_FAMILY(cpu_subtype))
160	return CPU_SUBTYPE_INTEL_FAMILY_MAX -
161	CPU_SUBTYPE_INTEL_FAMILY(ms->cpu_subtype) -
162	CPU_SUBTYPE_INTEL_FAMILY(cpu_subtype);
163	}
164	else {
165	if ( ms->cpu_subtype == cpu_subtype)
166	return CPU_SUBTYPE_INTEL_FAMILY_MAX + 1;
167	}
168	return 0;
169	}
170	}