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Source at commit 2351 created 10 years 5 months ago. By ifabio, more info from dmi tables | |
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1 | /*␊ |
2 | * Copyright (c) 2000-2005 Apple Computer, 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 | #ifndef _OS_OSBYTEORDERMACHINE_H␊ |
30 | #define _OS_OSBYTEORDERMACHINE_H␊ |
31 | ␊ |
32 | #include <stdint.h>␊ |
33 | ␊ |
34 | #if !defined(OS_INLINE)␊ |
35 | # if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L␊ |
36 | # define OS_INLINE static inline␊ |
37 | # elif defined(__MWERKS__) || defined(__cplusplus)␊ |
38 | # define OS_INLINE static inline␊ |
39 | # else␊ |
40 | # define OS_INLINE static __inline__␊ |
41 | # endif␊ |
42 | #endif␊ |
43 | ␊ |
44 | /* Generic byte swapping functions. */␊ |
45 | ␊ |
46 | OS_INLINE␊ |
47 | uint16_t␊ |
48 | _OSSwapInt16(␊ |
49 | uint16_t data␊ |
50 | )␊ |
51 | {␊ |
52 | return OSSwapConstInt16(data);␊ |
53 | }␊ |
54 | ␊ |
55 | OS_INLINE␊ |
56 | uint32_t␊ |
57 | _OSSwapInt32(␊ |
58 | uint32_t data␊ |
59 | )␊ |
60 | {␊ |
61 | return OSSwapConstInt32(data);␊ |
62 | }␊ |
63 | ␊ |
64 | OS_INLINE␊ |
65 | uint64_t␊ |
66 | _OSSwapInt64(␊ |
67 | uint64_t data␊ |
68 | )␊ |
69 | {␊ |
70 | return OSSwapConstInt64(data);␊ |
71 | }␊ |
72 | ␊ |
73 | /* Functions for byte reversed loads. */␊ |
74 | ␊ |
75 | OS_INLINE␊ |
76 | uint16_t␊ |
77 | OSReadSwapInt16(␊ |
78 | const volatile void * base,␊ |
79 | uintptr_t byteOffset␊ |
80 | )␊ |
81 | {␊ |
82 | uint16_t data = *(volatile uint16_t *)((uintptr_t)base + byteOffset);␊ |
83 | return _OSSwapInt16(data);␊ |
84 | }␊ |
85 | ␊ |
86 | OS_INLINE␊ |
87 | uint32_t␊ |
88 | OSReadSwapInt32(␊ |
89 | const volatile void * base,␊ |
90 | uintptr_t byteOffset␊ |
91 | )␊ |
92 | {␊ |
93 | uint32_t data = *(volatile uint32_t *)((uintptr_t)base + byteOffset);␊ |
94 | return _OSSwapInt32(data);␊ |
95 | }␊ |
96 | ␊ |
97 | OS_INLINE␊ |
98 | uint64_t␊ |
99 | OSReadSwapInt64(␊ |
100 | const volatile void * base,␊ |
101 | uintptr_t byteOffset␊ |
102 | )␊ |
103 | {␊ |
104 | uint64_t data = *(volatile uint64_t *)((uintptr_t)base + byteOffset);␊ |
105 | return _OSSwapInt64(data);␊ |
106 | }␊ |
107 | ␊ |
108 | /* Functions for byte reversed stores. */␊ |
109 | ␊ |
110 | OS_INLINE␊ |
111 | void␊ |
112 | OSWriteSwapInt16(␊ |
113 | volatile void * base,␊ |
114 | uintptr_t byteOffset,␊ |
115 | uint16_t data␊ |
116 | )␊ |
117 | {␊ |
118 | *(volatile uint16_t *)((uintptr_t)base + byteOffset) = _OSSwapInt16(data);␊ |
119 | }␊ |
120 | ␊ |
121 | OS_INLINE␊ |
122 | void␊ |
123 | OSWriteSwapInt32(␊ |
124 | volatile void * base,␊ |
125 | uintptr_t byteOffset,␊ |
126 | uint32_t data␊ |
127 | )␊ |
128 | {␊ |
129 | *(volatile uint32_t *)((uintptr_t)base + byteOffset) = _OSSwapInt32(data);␊ |
130 | }␊ |
131 | ␊ |
132 | OS_INLINE␊ |
133 | void␊ |
134 | OSWriteSwapInt64(␊ |
135 | volatile void * base,␊ |
136 | uintptr_t byteOffset,␊ |
137 | uint64_t data␊ |
138 | )␊ |
139 | {␊ |
140 | *(volatile uint64_t *)((uintptr_t)base + byteOffset) = _OSSwapInt64(data);␊ |
141 | }␊ |
142 | ␊ |
143 | #endif /* ! _OS_OSBYTEORDERMACHINE_H */␊ |
144 |