| | 1 | /* |
| | 2 | * Copyright (c) 2000-2013 Apple 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 | #include <machine/exec.h> |
| | 41 | #include <machine/machine_routines.h> |
| | 42 | |
| | 43 | #if __x86_64__ |
| | 44 | extern int bootarg_no32exec; /* bsd_init.c */ |
| | 45 | #endif |
| | 46 | |
| | 47 | /********************************************************************** |
| | 48 | * Routine: grade_binary() |
| | 49 | * |
| | 50 | * Function: Say OK to CPU types that we can actually execute on the given |
| | 51 | * system. 64-bit binaries have the highest preference, followed |
| | 52 | * by 32-bit binaries. 0 means unsupported. |
| | 53 | **********************************************************************/ |
| | 54 | int |
| | 55 | grade_binary(cpu_type_t exectype, cpu_subtype_t execsubtype, cpu_subtype_t execfeatures __unused, bool allow_simulator_binary __unused) |
| | 56 | { |
| | 57 | cpu_subtype_t hostsubtype = cpu_subtype(); |
| | 58 | |
| | 59 | switch (exectype) { |
| | 60 | case CPU_TYPE_X86_64: /* native 64-bit */ |
| | 61 | switch (hostsubtype) { |
| | 62 | case CPU_SUBTYPE_X86_64_H: /* x86_64h can execute anything */ |
| | 63 | switch (execsubtype) { |
| | 64 | case CPU_SUBTYPE_X86_64_H: |
| | 65 | return 3; |
| | 66 | case CPU_SUBTYPE_X86_64_ALL: |
| | 67 | return 2; |
| | 68 | } |
| | 69 | break; |
| | 70 | case CPU_SUBTYPE_X86_ARCH1: /* generic systems can only execute ALL subtype */ |
| | 71 | switch (execsubtype) { |
| | 72 | case CPU_SUBTYPE_X86_64_ALL: |
| | 73 | return 2; |
| | 74 | } |
| | 75 | break; |
| | 76 | } |
| | 77 | break; |
| | 78 | case CPU_TYPE_X86: /* native */ |
| | 79 | #if __x86_64__ |
| | 80 | if (bootarg_no32exec && !allow_simulator_binary) { |
| | 81 | return 0; |
| | 82 | } |
| | 83 | #endif |
| | 84 | return 1; |
| | 85 | } |
| | 86 | |
| | 87 | return 0; |
| | 88 | } |
projects / apple / xnu.git / blame_incremental