Kinetis Bootloader Host  2.0.0
Host Tools for Kinetis devices
src/blfwk/EndianUtilities.h
1 /*
2  * Copyright (c) 2013-14, Freescale Semiconductor, Inc.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without modification,
6  * are permitted provided that the following conditions are met:
7  *
8  * o Redistributions of source code must retain the above copyright notice, this list
9  * of conditions and the following disclaimer.
10  *
11  * o Redistributions in binary form must reproduce the above copyright notice, this
12  * list of conditions and the following disclaimer in the documentation and/or
13  * other materials provided with the distribution.
14  *
15  * o Neither the name of Freescale Semiconductor, Inc. nor the names of its
16  * contributors may be used to endorse or promote products derived from this
17  * software without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
23  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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26  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 #if !defined(_EndianUtilities_h_)
31 #define _EndianUtilities_h_
32 
35 
36 
38 #define _BYTESWAP16(value) (((((uint16_t)value) << 8) & 0xFF00) | ((((uint16_t)value) >> 8) & 0x00FF))
39 
41 #define _BYTESWAP32(value) \
42  (((((uint32_t)value) << 24) & 0xFF000000) | ((((uint32_t)value) << 8) & 0x00FF0000) | \
43  ((((uint32_t)value) >> 8) & 0x0000FF00) | ((((uint32_t)value) >> 24) & 0x000000FF))
44 
46 #define _BYTESWAP64(value) \
47  (((((uint64_t)value) << 56) & 0xFF00000000000000ULL) | ((((uint64_t)value) << 40) & 0x00FF000000000000ULL) | \
48  ((((uint64_t)value) << 24) & 0x0000FF0000000000ULL) | ((((uint64_t)value) << 8) & 0x000000FF00000000ULL) | \
49  ((((uint64_t)value) >> 8) & 0x00000000FF000000ULL) | ((((uint64_t)value) >> 24) & 0x0000000000FF0000ULL) | \
50  ((((uint64_t)value) >> 40) & 0x000000000000FF00ULL) | ((((uint64_t)value) >> 56) & 0x00000000000000FFULL))
51 
53 
55 
56 
57 inline uint16_t _swap_u16(uint16_t value)
58 {
59  return _BYTESWAP16(value);
60 }
61 inline int16_t _swap_s16(int16_t value)
62 {
63  return (int16_t)_BYTESWAP16((uint16_t)value);
64 }
65 
66 inline uint32_t _swap_u32(uint32_t value)
67 {
68  return _BYTESWAP32(value);
69 }
70 inline int32_t _swap_s32(int32_t value)
71 {
72  return (int32_t)_BYTESWAP32((uint32_t)value);
73 }
74 
75 inline uint64_t _swap_u64(uint64_t value)
76 {
77  return _BYTESWAP64(value);
78 }
79 inline int64_t _swap_s64(int64_t value)
80 {
81  return (uint64_t)_BYTESWAP64((uint64_t)value);
82 }
83 
85 
86 #if defined(__LITTLE_ENDIAN__)
87 
88 /* little endian host */
89 
90 #define ENDIAN_BIG_TO_HOST_U16(value) (_swap_u16(value))
91 #define ENDIAN_HOST_TO_BIG_U16(value) (_swap_u16(value))
92 
93 #define ENDIAN_BIG_TO_HOST_S16(value) (_swap_s16(value))
94 #define ENDIAN_HOST_TO_BIG_S16(value) (_swap_s16(value))
95 
96 #define ENDIAN_BIG_TO_HOST_U32(value) (_swap_u32(value))
97 #define ENDIAN_HOST_TO_BIG_U32(value) (_swap_u32(value))
98 
99 #define ENDIAN_BIG_TO_HOST_S32(value) (_swap_s32(value))
100 #define ENDIAN_HOST_TO_BIG_S32(value) (_swap_s32(value))
101 
102 #define ENDIAN_BIG_TO_HOST_U64(value) (_swap_u64(value))
103 #define ENDIAN_HOST_TO_BIG_U64(value) (_swap_u64(value))
104 
105 #define ENDIAN_BIG_TO_HOST_S64(value) (_swap_s64(value))
106 #define ENDIAN_HOST_TO_BIG_S64(value) (_swap_s64(value))
107 
108 /* no-ops */
109 
110 #define ENDIAN_LITTLE_TO_HOST_U16(value) (value)
111 #define ENDIAN_HOST_TO_LITTLE_U16(value) (value)
112 
113 #define ENDIAN_LITTLE_TO_HOST_S16(value) (value)
114 #define ENDIAN_HOST_TO_LITTLE_S16(value) (value)
115 
116 #define ENDIAN_LITTLE_TO_HOST_U32(value) (value)
117 #define ENDIAN_HOST_TO_LITTLE_U32(value) (value)
118 
119 #define ENDIAN_LITTLE_TO_HOST_S32(value) (value)
120 #define ENDIAN_HOST_TO_LITTLE_S32(value) (value)
121 
122 #define ENDIAN_LITTLE_TO_HOST_U64(value) (value)
123 #define ENDIAN_HOST_TO_LITTLE_U64(value) (value)
124 
125 #define ENDIAN_LITTLE_TO_HOST_S64(value) (value)
126 #define ENDIAN_HOST_TO_LITTLE_S64(value) (value)
127 
128 #elif defined(__BIG_ENDIAN__)
129 
130 /* big endian host */
131 
132 #define ENDIAN_LITTLE_TO_HOST_U16(value) (_swap_u16(value))
133 #define ENDIAN_HOST_TO_LITTLE_U16(value) (_swap_u16(value))
134 
135 #define ENDIAN_LITTLE_TO_HOST_S16(value) (_swap_s16(value))
136 #define ENDIAN_HOST_TO_LITTLE_S16(value) (_swap_s16(value))
137 
138 #define ENDIAN_LITTLE_TO_HOST_U32(value) (_swap_u32(value))
139 #define ENDIAN_HOST_TO_LITTLE_U32(value) (_swap_u32(value))
140 
141 #define ENDIAN_LITTLE_TO_HOST_S32(value) (_swap_s32(value))
142 #define ENDIAN_HOST_TO_LITTLE_S32(value) (_swap_s32(value))
143 
144 #define ENDIAN_LITTLE_TO_HOST_U64(value) (_swap_u64(value))
145 #define ENDIAN_HOST_TO_LITTLE_U64(value) (_swap_u64(value))
146 
147 #define ENDIAN_LITTLE_TO_HOST_S64(value) (_swap_s64(value))
148 #define ENDIAN_HOST_TO_LITTLE_S64(value) (_swap_s64(value))
149 
150 /* no-ops */
151 
152 #define ENDIAN_BIG_TO_HOST_U16(value) (value)
153 #define ENDIAN_HOST_TO_BIG_U16(value) (value)
154 
155 #define ENDIAN_BIG_TO_HOST_S16(value) (value)
156 #define ENDIAN_HOST_TO_BIG_S16(value) (value)
157 
158 #define ENDIAN_BIG_TO_HOST_U32(value) (value)
159 #define ENDIAN_HOST_TO_BIG_U32(value) (value)
160 
161 #define ENDIAN_BIG_TO_HOST_S32(value) (value)
162 #define ENDIAN_HOST_TO_BIG_S32(value) (value)
163 
164 #define ENDIAN_BIG_TO_HOST_U64(value) (value)
165 #define ENDIAN_HOST_TO_BIG_U64(value) (value)
166 
167 #define ENDIAN_BIG_TO_HOST_S64(value) (value)
168 #define ENDIAN_HOST_TO_BIG_S64(value) (value)
169 
170 #endif
171 
172 #endif // _EndianUtilities_h_