2 * Copyright (c) 2000-2013 Apple Inc. All rights reserved.
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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.
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
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.
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
29 * Copyright (C) 1990, NeXT, Inc.
31 * File: next/kern_machdep.c
32 * Author: John Seamons
34 * Machine-specific kernel routines.
37 #include <sys/types.h>
38 #include <mach/machine.h>
39 #include <kern/cpu_number.h>
40 #include <machine/exec.h>
41 #include <machine/machine_routines.h>
43 /**********************************************************************
44 * Routine: grade_binary()
46 * Function: Say OK to CPU types that we can actually execute on the given
47 * system. 64-bit binaries have the highest preference, followed
48 * by 32-bit binaries. 0 means unsupported.
49 **********************************************************************/
51 grade_binary(cpu_type_t exectype
, cpu_subtype_t execsubtype
)
53 cpu_subtype_t hostsubtype
= cpu_subtype();
56 case CPU_TYPE_X86_64
: /* native 64-bit */
58 case CPU_SUBTYPE_X86_64_H
: /* x86_64h can execute anything */
59 switch (execsubtype
) {
60 case CPU_SUBTYPE_X86_64_H
:
62 case CPU_SUBTYPE_X86_64_ALL
:
66 case CPU_SUBTYPE_X86_ARCH1
: /* generic systems can only execute ALL subtype */
67 switch (execsubtype
) {
68 case CPU_SUBTYPE_X86_64_ALL
:
74 case CPU_TYPE_X86
: /* native */
82 pie_required(cpu_type_t exectype __unused
, cpu_subtype_t execsubtype __unused
)