1 | /* |
2 | * Copyright (c) 1999-2006 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_OSBYTEORDERI386_H |
30 | #define _OS_OSBYTEORDERI386_H |
31 | |
32 | #include <stdint.h> |
33 | #include <libkern/i386/_OSByteOrder.h> |
34 | #include <sys/_types/_os_inline.h> |
35 | |
36 | /* Functions for byte reversed loads. */ |
37 | |
38 | OS_INLINE |
39 | uint16_t |
40 | OSReadSwapInt16( |
41 | const volatile void * base, |
42 | uintptr_t byteOffset |
43 | ) |
44 | { |
45 | uint16_t result; |
46 | |
47 | result = *(volatile uint16_t *)((uintptr_t)base + byteOffset); |
48 | return _OSSwapInt16(result); |
49 | } |
50 | |
51 | OS_INLINE |
52 | uint32_t |
53 | OSReadSwapInt32( |
54 | const volatile void * base, |
55 | uintptr_t byteOffset |
56 | ) |
57 | { |
58 | uint32_t result; |
59 | |
60 | result = *(volatile uint32_t *)((uintptr_t)base + byteOffset); |
61 | return _OSSwapInt32(result); |
62 | } |
63 | |
64 | OS_INLINE |
65 | uint64_t |
66 | OSReadSwapInt64( |
67 | const volatile void * base, |
68 | uintptr_t byteOffset |
69 | ) |
70 | { |
71 | uint64_t result; |
72 | |
73 | result = *(volatile uint64_t *)((uintptr_t)base + byteOffset); |
74 | return _OSSwapInt64(result); |
75 | } |
76 | |
77 | /* Functions for byte reversed stores. */ |
78 | |
79 | OS_INLINE |
80 | void |
81 | OSWriteSwapInt16( |
82 | volatile void * base, |
83 | uintptr_t byteOffset, |
84 | uint16_t data |
85 | ) |
86 | { |
87 | *(volatile uint16_t *)((uintptr_t)base + byteOffset) = _OSSwapInt16(data); |
88 | } |
89 | |
90 | OS_INLINE |
91 | void |
92 | OSWriteSwapInt32( |
93 | volatile void * base, |
94 | uintptr_t byteOffset, |
95 | uint32_t data |
96 | ) |
97 | { |
98 | *(volatile uint32_t *)((uintptr_t)base + byteOffset) = _OSSwapInt32(data); |
99 | } |
100 | |
101 | OS_INLINE |
102 | void |
103 | OSWriteSwapInt64( |
104 | volatile void * base, |
105 | uintptr_t byteOffset, |
106 | uint64_t data |
107 | ) |
108 | { |
109 | *(volatile uint64_t *)((uintptr_t)base + byteOffset) = _OSSwapInt64(data); |
110 | } |
111 | |
112 | #endif /* ! _OS_OSBYTEORDERI386_H */ |
113 | |