1 | /** |
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2 | * @file rtems/endian.h |
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3 | * |
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4 | * This include file provides endian information about the target. |
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5 | */ |
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6 | |
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7 | |
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8 | #ifndef _RTEMS_ENDIAN_H |
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9 | #define _RTEMS_ENDIAN_H |
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10 | |
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11 | #include <stdint.h> |
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12 | |
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13 | #include <machine/endian.h> |
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14 | |
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15 | #ifndef _BYTEORDER_FUNC_DEFINED |
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16 | #define _BYTEORDER_FUNC_DEFINED |
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17 | #define htonl(x) __htonl(x) |
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18 | #define htons(x) __htons(x) |
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19 | #define ntohl(x) __ntohl(x) |
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20 | #define ntohs(x) __ntohs(x) |
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21 | #endif |
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22 | |
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23 | #define NTOHS(x) (x) = ntohs(x) |
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24 | #define HTONS(x) (x) = htons(x) |
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25 | #define NTOHL(x) (x) = ntohl(x) |
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26 | #define HTONL(x) (x) = htonl(x) |
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27 | |
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28 | static inline uint16_t rtems_uint16_from_little_endian( const uint8_t *data) |
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29 | { |
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30 | uint16_t value = 0; |
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31 | int i; |
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32 | |
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33 | for (i = 1; i >= 0; --i) { |
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34 | value = (uint16_t) ((value << 8) + data [i]); |
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35 | } |
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36 | |
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37 | return value; |
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38 | } |
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39 | |
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40 | static inline uint32_t rtems_uint32_from_little_endian( const uint8_t *data) |
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41 | { |
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42 | uint32_t value = 0; |
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43 | int i; |
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44 | |
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45 | for (i = 3; i >= 0; --i) { |
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46 | value = (value << 8) + data [i]; |
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47 | } |
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48 | |
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49 | return value; |
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50 | } |
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51 | |
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52 | static inline uint64_t rtems_uint64_from_little_endian( const uint8_t *data) |
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53 | { |
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54 | uint64_t value = 0; |
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55 | int i; |
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56 | |
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57 | for (i = 7; i >= 0; --i) { |
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58 | value = (value << 8) + (uint64_t) data [i]; |
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59 | } |
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60 | |
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61 | return value; |
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62 | } |
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63 | |
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64 | static inline uint16_t rtems_uint16_from_big_endian( const uint8_t *data) |
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65 | { |
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66 | uint16_t value = 0; |
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67 | int i; |
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68 | |
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69 | for (i = 0; i < 2; ++i) { |
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70 | value = (uint16_t) ((value << 8) + data [i]); |
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71 | } |
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72 | |
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73 | return value; |
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74 | } |
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75 | |
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76 | static inline uint32_t rtems_uint32_from_big_endian( const uint8_t *data) |
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77 | { |
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78 | uint32_t value = 0; |
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79 | int i; |
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80 | |
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81 | for (i = 0; i < 4; ++i) { |
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82 | value = (value << 8) + (uint32_t) data [i]; |
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83 | } |
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84 | |
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85 | return value; |
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86 | } |
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87 | |
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88 | static inline uint64_t rtems_uint64_from_big_endian( const uint8_t *data) |
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89 | { |
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90 | uint64_t value = 0; |
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91 | int i; |
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92 | |
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93 | for (i = 0; i < 8; ++i) { |
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94 | value = (value << 8) + (uint64_t) data [i]; |
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95 | } |
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96 | |
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97 | return value; |
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98 | } |
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99 | |
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100 | static inline void rtems_uint16_to_little_endian( uint16_t value, uint8_t *data) |
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101 | { |
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102 | int i; |
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103 | |
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104 | for (i = 0; i < 2; ++i) { |
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105 | data [i] = (uint8_t) value; |
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106 | value >>= 8; |
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107 | } |
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108 | } |
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109 | |
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110 | static inline void rtems_uint32_to_little_endian( uint32_t value, uint8_t *data) |
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111 | { |
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112 | int i; |
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113 | |
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114 | for (i = 0; i < 4; ++i) { |
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115 | data [i] = (uint8_t) value; |
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116 | value >>= 8; |
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117 | } |
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118 | } |
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119 | |
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120 | static inline void rtems_uint64_to_little_endian( uint64_t value, uint8_t *data) |
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121 | { |
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122 | int i; |
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123 | |
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124 | for (i = 0; i < 8; ++i) { |
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125 | data [i] = (uint8_t) value; |
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126 | value >>= 8; |
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127 | } |
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128 | } |
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129 | |
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130 | static inline void rtems_uint16_to_big_endian( uint16_t value, uint8_t *data) |
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131 | { |
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132 | int i; |
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133 | |
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134 | for (i = 1; i >= 0; --i) { |
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135 | data [i] = (uint8_t) value; |
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136 | value >>= 8; |
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137 | } |
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138 | } |
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139 | |
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140 | static inline void rtems_uint32_to_big_endian( uint32_t value, uint8_t *data) |
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141 | { |
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142 | int i; |
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143 | |
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144 | for (i = 3; i >= 0; --i) { |
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145 | data [i] = (uint8_t) value; |
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146 | value >>= 8; |
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147 | } |
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148 | } |
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149 | |
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150 | static inline void rtems_uint64_to_big_endian( uint64_t value, uint8_t *data) |
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151 | { |
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152 | int i; |
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153 | |
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154 | for (i = 7; i >= 0; --i) { |
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155 | data [i] = (uint8_t) value; |
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156 | value >>= 8; |
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157 | } |
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158 | } |
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159 | |
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160 | #endif /* _RTEMS_ENDIAN_H */ |
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