1/*
2 * Copyright (c) 2006-2008 Apple Computer, Inc.  All Rights Reserved.
3 *
4 * @APPLE_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. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23
24#include <mach/machine.h>
25
26#define I386_STRING		"i386"
27#define X86_64_STRING		"x86_64"
28#define ARM_STRING		"arm"
29#define ARM64_STRING		"arm64"
30#define ANY_CPU_STRING		"any"
31
32static inline char*
33string_for_arch(cpu_type_t arch)
34{
35	switch(arch) {
36		case CPU_TYPE_I386:
37			return I386_STRING;
38		case CPU_TYPE_X86_64:
39			return X86_64_STRING;
40		case CPU_TYPE_ARM:
41			return ARM_STRING;
42#if defined(CPU_TYPE_ARM64) && !defined(RC_HIDE_64)
43		case CPU_TYPE_ARM64:
44			return ARM64_STRING;
45#endif
46		case CPU_TYPE_ANY:
47			return ANY_CPU_STRING;
48		default:
49			return NULL;
50	}
51}
52
53static inline cpu_type_t
54arch_for_string(const char* string)
55{
56	if(!strcmp(string, I386_STRING))
57		return CPU_TYPE_I386;
58	else if(!strcmp(string, X86_64_STRING))
59		return CPU_TYPE_X86_64;
60	else if(!strcmp(string, ARM_STRING))
61		return CPU_TYPE_ARM;
62#if defined(CPU_TYPE_ARM64) && !defined(RC_HIDE_64)
63	else if(!strcmp(string, ARM64_STRING))
64		return CPU_TYPE_ARM64;
65#endif
66	else if(!strcmp(string, ANY_CPU_STRING))
67		return CPU_TYPE_ANY;
68	else
69		return (cpu_type_t)0;
70}
71
72static inline int needs_swapping(cpu_type_t a, cpu_type_t b)
73{
74	switch(a) {
75	case CPU_TYPE_I386:
76	case CPU_TYPE_X86_64:
77		if(b == CPU_TYPE_POWERPC || b == CPU_TYPE_POWERPC64)
78			return 1;
79		else
80			return 0;
81	case CPU_TYPE_POWERPC:
82	case CPU_TYPE_POWERPC64:
83		if(b == CPU_TYPE_I386 || b == CPU_TYPE_X86_64)
84			return 1;
85		else
86			return 0;
87	}
88
89	return 0;
90}
91
92#if defined(__i386__)
93#define host_arch CPU_TYPE_I386
94#elif defined(__x86_64__)
95#define host_arch CPU_TYPE_X86_64
96#elif defined(__arm__)
97#define host_arch CPU_TYPE_ARM
98#elif defined(__arm64__)
99#define host_arch CPU_TYPE_ARM64
100#else
101#error Unsupported architecture
102#endif
103
104