RTEMS  5.1
utility.h
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1 
9 /*
10  * Copyright (c) 2008-2011 embedded brains GmbH. All rights reserved.
11  *
12  * embedded brains GmbH
13  * Obere Lagerstr. 30
14  * 82178 Puchheim
15  * Germany
16  * <rtems@embedded-brains.de>
17  *
18  * The license and distribution terms for this file may be
19  * found in the file LICENSE in this distribution or at
20  * http://www.rtems.org/license/LICENSE.
21  */
22 
23 #ifndef LIBCPU_SHARED_UTILITY_H
24 #define LIBCPU_SHARED_UTILITY_H
25 
26 #include <stdint.h>
27 
28 #define BSP_BIT8(bit) \
29  ((uint8_t) (((unsigned int) 1) << (bit)))
30 
31 #define BSP_MSK8(first_bit, last_bit) \
32  ((uint8_t) ((BSP_BIT8((last_bit) - (first_bit) + 1) - 1) << (first_bit)))
33 
34 #define BSP_FLD8(val, first_bit, last_bit) \
35  ((uint8_t) \
36  ((((unsigned int) (val)) << (first_bit)) & BSP_MSK8(first_bit, last_bit)))
37 
38 #define BSP_FLD8GET(reg, first_bit, last_bit) \
39  ((uint8_t) (((reg) & BSP_MSK8(first_bit, last_bit)) >> (first_bit)))
40 
41 #define BSP_FLD8SET(reg, val, first_bit, last_bit) \
42  ((uint8_t) (((reg) & ~BSP_MSK8(first_bit, last_bit)) \
43  | BSP_FLD8(val, first_bit, last_bit)))
44 
45 #define BSP_BIT16(bit) \
46  ((uint16_t) (((unsigned int) 1) << (bit)))
47 
48 #define BSP_MSK16(first_bit, last_bit) \
49  ((uint16_t) ((BSP_BIT16((last_bit) - (first_bit) + 1) - 1) << (first_bit)))
50 
51 #define BSP_FLD16(val, first_bit, last_bit) \
52  ((uint16_t) \
53  ((((unsigned int) (val)) << (first_bit)) & BSP_MSK16(first_bit, last_bit)))
54 
55 #define BSP_FLD16GET(reg, first_bit, last_bit) \
56  ((uint16_t) (((reg) & BSP_MSK16(first_bit, last_bit)) >> (first_bit)))
57 
58 #define BSP_FLD16SET(reg, val, first_bit, last_bit) \
59  ((uint16_t) (((reg) & ~BSP_MSK16(first_bit, last_bit)) \
60  | BSP_FLD16(val, first_bit, last_bit)))
61 
62 #define BSP_BIT32(bit) \
63  ((uint32_t) (((uint32_t) 1) << (bit)))
64 
65 #define BSP_MSK32(first_bit, last_bit) \
66  ((uint32_t) ((BSP_BIT32((last_bit) - (first_bit) + 1) - 1) << (first_bit)))
67 
68 #define BSP_FLD32(val, first_bit, last_bit) \
69  ((uint32_t) \
70  ((((uint32_t) (val)) << (first_bit)) & BSP_MSK32(first_bit, last_bit)))
71 
72 #define BSP_FLD32GET(reg, first_bit, last_bit) \
73  ((uint32_t) (((reg) & BSP_MSK32(first_bit, last_bit)) >> (first_bit)))
74 
75 #define BSP_FLD32SET(reg, val, first_bit, last_bit) \
76  ((uint32_t) (((reg) & ~BSP_MSK32(first_bit, last_bit)) \
77  | BSP_FLD32(val, first_bit, last_bit)))
78 
79 #define BSP_BIT64(bit) \
80  ((uint64_t) (((uint64_t) 1) << (bit)))
81 
82 #define BSP_MSK64(first_bit, last_bit) \
83  ((uint64_t) ((BSP_BIT64((last_bit) - (first_bit) + 1) - 1) << (first_bit)))
84 
85 #define BSP_FLD64(val, first_bit, last_bit) \
86  ((uint64_t) \
87  ((((uint64_t) (val)) << (first_bit)) & BSP_MSK64(first_bit, last_bit)))
88 
89 #define BSP_FLD64GET(reg, first_bit, last_bit) \
90  ((uint64_t) (((reg) & BSP_MSK64(first_bit, last_bit)) >> (first_bit)))
91 
92 #define BSP_FLD64SET(reg, val, first_bit, last_bit) \
93  ((uint64_t) (((reg) & ~BSP_MSK64(first_bit, last_bit)) \
94  | BSP_FLD64(val, first_bit, last_bit)))
95 
96 #define BSP_BBIT8(bit) \
97  BSP_BIT8(7 - (bit))
98 
99 #define BSP_BMSK8(first_bit, last_bit) \
100  BSP_MSK8(7 - (last_bit), 7 - (first_bit))
101 
102 #define BSP_BFLD8(val, first_bit, last_bit) \
103  BSP_FLD8(val, 7 - (last_bit), 7 - (first_bit))
104 
105 #define BSP_BFLD8GET(reg, first_bit, last_bit) \
106  BSP_FLD8GET(reg, 7 - (last_bit), 7 - (first_bit))
107 
108 #define BSP_BFLD8SET(reg, val, first_bit, last_bit) \
109  BSP_FLD8SET(reg, val, 7 - (last_bit), 7 - (first_bit))
110 
111 #define BSP_BBIT16(bit) \
112  BSP_BIT16(15 - (bit))
113 
114 #define BSP_BMSK16(first_bit, last_bit) \
115  BSP_MSK16(15 - (last_bit), 15 - (first_bit))
116 
117 #define BSP_BFLD16(val, first_bit, last_bit) \
118  BSP_FLD16(val, 15 - (last_bit), 15 - (first_bit))
119 
120 #define BSP_BFLD16GET(reg, first_bit, last_bit) \
121  BSP_FLD16GET(reg, 15 - (last_bit), 15 - (first_bit))
122 
123 #define BSP_BFLD16SET(reg, val, first_bit, last_bit) \
124  BSP_FLD16SET(reg, val, 15 - (last_bit), 15 - (first_bit))
125 
126 #define BSP_BBIT32(bit) \
127  BSP_BIT32(31 - (bit))
128 
129 #define BSP_BMSK32(first_bit, last_bit) \
130  BSP_MSK32(31 - (last_bit), 31 - (first_bit))
131 
132 #define BSP_BFLD32(val, first_bit, last_bit) \
133  BSP_FLD32(val, 31 - (last_bit), 31 - (first_bit))
134 
135 #define BSP_BFLD32GET(reg, first_bit, last_bit) \
136  BSP_FLD32GET(reg, 31 - (last_bit), 31 - (first_bit))
137 
138 #define BSP_BFLD32SET(reg, val, first_bit, last_bit) \
139  BSP_FLD32SET(reg, val, 31 - (last_bit), 31 - (first_bit))
140 
141 #define BSP_BBIT64(bit) \
142  BSP_BIT64(63 - (bit))
143 
144 #define BSP_BMSK64(first_bit, last_bit) \
145  BSP_MSK64(63 - (last_bit), 63 - (first_bit))
146 
147 #define BSP_BFLD64(val, first_bit, last_bit) \
148  BSP_FLD64(val, 63 - (last_bit), 63 - (first_bit))
149 
150 #define BSP_BFLD64GET(reg, first_bit, last_bit) \
151  BSP_FLD64GET(reg, 63 - (last_bit), 63 - (first_bit))
152 
153 #define BSP_BFLD64SET(reg, val, first_bit, last_bit) \
154  BSP_FLD64SET(reg, val, 63 - (last_bit), 63 - (first_bit))
155 
156 #endif /* LIBCPU_SHARED_UTILITY_H */
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