1 | #ifndef BSWAP_H
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2 | #define BSWAP_H
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3 |
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4 | #include "config-host.h"
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5 |
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6 | #ifndef _MSC_VER
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7 | #include <inttypes.h>
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8 | #endif
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9 |
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10 | #ifdef HAVE_BYTESWAP_H
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11 | #include <byteswap.h>
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12 | #else
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13 | #ifdef _MSC_VER
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14 | static _inline uint16_t bswap_16(register uint16_t x)
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15 | {
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16 | return ((uint16_t)( \
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17 | (((uint16_t)(x) & (uint16_t)0x00ffU) << 8) | \
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18 | (((uint16_t)(x) & (uint16_t)0xff00U) >> 8) )); \
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19 | }
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20 |
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21 | static _inline uint32_t bswap_32(register uint32_t x) \
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22 | { \
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23 | return ((uint32_t)( \
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24 | (((uint32_t)(x) & (uint32_t)0x000000ffUL) << 24) | \
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25 | (((uint32_t)(x) & (uint32_t)0x0000ff00UL) << 8) | \
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26 | (((uint32_t)(x) & (uint32_t)0x00ff0000UL) >> 8) | \
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27 | (((uint32_t)(x) & (uint32_t)0xff000000UL) >> 24) )); \
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28 | }
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29 |
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30 | static _inline uint64_t bswap_64(register uint64_t x) \
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31 | { \
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32 | return ((uint64_t)( \
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33 | (uint64_t)(((uint64_t)(x) & (uint64_t)0x00000000000000ffULL) << 56) | \
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34 | (uint64_t)(((uint64_t)(x) & (uint64_t)0x000000000000ff00ULL) << 40) | \
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35 | (uint64_t)(((uint64_t)(x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \
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36 | (uint64_t)(((uint64_t)(x) & (uint64_t)0x00000000ff000000ULL) << 8) | \
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37 | (uint64_t)(((uint64_t)(x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \
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38 | (uint64_t)(((uint64_t)(x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \
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39 | (uint64_t)(((uint64_t)(x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \
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40 | (uint64_t)(((uint64_t)(x) & (uint64_t)0xff00000000000000ULL) >> 56) )); \
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41 | }
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42 |
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43 | #else
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44 |
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45 | #define bswap_16(x) __extension__ /* <- VBOX */ \
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46 | ({ \
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47 | uint16_t __x = (x); \
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48 | ((uint16_t)( \
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49 | (((uint16_t)(__x) & (uint16_t)0x00ffU) << 8) | \
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50 | (((uint16_t)(__x) & (uint16_t)0xff00U) >> 8) )); \
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51 | })
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52 |
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53 | #define bswap_32(x) __extension__ /* <- VBOX */ \
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54 | ({ \
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55 | uint32_t __x = (x); \
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56 | ((uint32_t)( \
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57 | (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
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58 | (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
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59 | (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
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60 | (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \
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61 | })
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62 |
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63 | #define bswap_64(x) __extension__ /* <- VBOX */ \
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64 | ({ \
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65 | uint64_t __x = (x); \
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66 | ((uint64_t)( \
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67 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000000000ffULL) << 56) | \
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68 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000000000ff00ULL) << 40) | \
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69 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \
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70 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000ff000000ULL) << 8) | \
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71 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \
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72 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \
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73 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \
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74 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0xff00000000000000ULL) >> 56) )); \
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75 | })
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76 | #endif
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77 |
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78 | #endif /* !HAVE_BYTESWAP_H */
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79 |
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80 | #ifndef bswap16 /* BSD endian.h clash */
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81 | #ifndef VBOX
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82 | static inline uint16_t bswap16(uint16_t x)
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83 | #else
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84 | DECLINLINE(uint16_t) bswap16(uint16_t x)
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85 | #endif
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86 | {
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87 | return bswap_16(x);
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88 | }
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89 | #endif
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90 |
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91 | #ifndef bswap32 /* BSD endian.h clash */
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92 | #ifndef VBOX
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93 | static inline uint32_t bswap32(uint32_t x)
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94 | #else
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95 | DECLINLINE(uint32_t) bswap32(uint32_t x)
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96 | #endif
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97 | {
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98 | return bswap_32(x);
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99 | }
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100 | #endif
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101 |
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102 | #ifndef bswap64 /* BSD endian.h clash. */
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103 | #ifndef VBOX
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104 | static inline uint64_t bswap64(uint64_t x)
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105 | #else
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106 | DECLINLINE(uint64_t) bswap64(uint64_t x)
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107 | #endif
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108 | {
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109 | return bswap_64(x);
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110 | }
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111 | #endif
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112 |
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113 | #ifndef VBOX
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114 | static inline void bswap16s(uint16_t *s)
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115 | #else
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116 | DECLINLINE(void) bswap16s(uint16_t *s)
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117 | #endif
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118 | {
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119 | *s = bswap16(*s);
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120 | }
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121 |
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122 | #ifndef VBOX
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123 | static inline void bswap32s(uint32_t *s)
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124 | #else
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125 | DECLINLINE(void) bswap32s(uint32_t *s)
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126 | #endif
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127 | {
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128 | *s = bswap32(*s);
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129 | }
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130 |
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131 | #ifndef VBOX
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132 | static inline void bswap64s(uint64_t *s)
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133 | #else
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134 | DECLINLINE(void) bswap64s(uint64_t *s)
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135 | #endif
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136 | {
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137 | *s = bswap64(*s);
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138 | }
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139 |
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140 | #if defined(WORDS_BIGENDIAN)
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141 | #define be_bswap(v, size) (v)
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142 | #define le_bswap(v, size) bswap ## size(v)
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143 | #define be_bswaps(v, size)
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144 | #define le_bswaps(p, size) *p = bswap ## size(*p);
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145 | #else
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146 | #define le_bswap(v, size) (v)
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147 | #define be_bswap(v, size) bswap ## size(v)
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148 | #define le_bswaps(v, size)
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149 | #define be_bswaps(p, size) *p = bswap ## size(*p);
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150 | #endif
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151 |
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152 | #ifndef VBOX
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153 | #define CPU_CONVERT(endian, size, type)\
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154 | static inline type endian ## size ## _to_cpu(type v)\
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155 | {\
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156 | return endian ## _bswap(v, size);\
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157 | }\
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158 | \
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159 | static inline type cpu_to_ ## endian ## size(type v)\
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160 | {\
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161 | return endian ## _bswap(v, size);\
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162 | }\
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163 | \
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164 | static inline void endian ## size ## _to_cpus(type *p)\
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165 | {\
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166 | endian ## _bswaps(p, size)\
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167 | }\
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168 | \
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169 | static inline void cpu_to_ ## endian ## size ## s(type *p)\
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170 | {\
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171 | endian ## _bswaps(p, size)\
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172 | }\
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173 | \
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174 | static inline type endian ## size ## _to_cpup(const type *p)\
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175 | {\
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176 | return endian ## size ## _to_cpu(*p);\
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177 | }\
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178 | \
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179 | static inline void cpu_to_ ## endian ## size ## w(type *p, type v)\
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180 | {\
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181 | *p = cpu_to_ ## endian ## size(v);\
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182 | }
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183 | #else /* VBOX */
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184 | #define CPU_CONVERT(endian, size, type)\
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185 | DECLINLINE(type) endian ## size ## _to_cpu(type v)\
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186 | {\
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187 | return endian ## _bswap(v, size);\
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188 | }\
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189 | \
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190 | DECLINLINE(type) cpu_to_ ## endian ## size(type v)\
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191 | {\
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192 | return endian ## _bswap(v, size);\
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193 | }\
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194 | \
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195 | DECLINLINE(void) endian ## size ## _to_cpus(type *p)\
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196 | {\
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197 | endian ## _bswaps(p, size)\
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198 | }\
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199 | \
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200 | DECLINLINE(void) cpu_to_ ## endian ## size ## s(type *p)\
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201 | {\
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202 | endian ## _bswaps(p, size)\
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203 | }\
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204 | \
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205 | DECLINLINE(type) endian ## size ## _to_cpup(const type *p)\
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206 | {\
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207 | return endian ## size ## _to_cpu(*p);\
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208 | }\
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209 | \
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210 | DECLINLINE(void) cpu_to_ ## endian ## size ## w(type *p, type v)\
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211 | {\
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212 | *p = cpu_to_ ## endian ## size(v);\
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213 | }
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214 | #endif /* VBOX */
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215 |
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216 | CPU_CONVERT(be, 16, uint16_t)
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217 | CPU_CONVERT(be, 32, uint32_t)
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218 | CPU_CONVERT(be, 64, uint64_t)
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219 |
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220 | CPU_CONVERT(le, 16, uint16_t)
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221 | CPU_CONVERT(le, 32, uint32_t)
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222 | CPU_CONVERT(le, 64, uint64_t)
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223 |
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224 | /* unaligned versions (optimized for frequent unaligned accesses)*/
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225 |
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226 | #if defined(__i386__) || defined(__powerpc__)
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227 |
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228 | #define cpu_to_le16wu(p, v) cpu_to_le16w(p, v)
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229 | #define cpu_to_le32wu(p, v) cpu_to_le32w(p, v)
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230 | #define le16_to_cpupu(p) le16_to_cpup(p)
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231 | #define le32_to_cpupu(p) le32_to_cpup(p)
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232 |
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233 | #define cpu_to_be16wu(p, v) cpu_to_be16w(p, v)
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234 | #define cpu_to_be32wu(p, v) cpu_to_be32w(p, v)
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235 |
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236 | #else
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237 |
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238 | static inline void cpu_to_le16wu(uint16_t *p, uint16_t v)
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239 | {
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240 | uint8_t *p1 = (uint8_t *)p;
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241 |
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242 | p1[0] = (uint8_t)v;
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243 | p1[1] = v >> 8;
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244 | }
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245 |
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246 | static inline void cpu_to_le32wu(uint32_t *p, uint32_t v)
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247 | {
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248 | uint8_t *p1 = (uint8_t *)p;
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249 |
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250 | p1[0] = (uint8_t)v;
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251 | p1[1] = v >> 8;
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252 | p1[2] = v >> 16;
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253 | p1[3] = v >> 24;
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254 | }
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255 |
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256 | static inline uint16_t le16_to_cpupu(const uint16_t *p)
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257 | {
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258 | const uint8_t *p1 = (const uint8_t *)p;
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259 | return p1[0] | (p1[1] << 8);
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260 | }
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261 |
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262 | static inline uint32_t le32_to_cpupu(const uint32_t *p)
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263 | {
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264 | const uint8_t *p1 = (const uint8_t *)p;
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265 | return p1[0] | (p1[1] << 8) | (p1[2] << 16) | (p1[3] << 24);
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266 | }
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267 |
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268 | static inline void cpu_to_be16wu(uint16_t *p, uint16_t v)
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269 | {
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270 | uint8_t *p1 = (uint8_t *)p;
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271 |
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272 | p1[0] = v >> 8;
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273 | p1[1] = (uint8_t)v;
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274 | }
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275 |
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276 | static inline void cpu_to_be32wu(uint32_t *p, uint32_t v)
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277 | {
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278 | uint8_t *p1 = (uint8_t *)p;
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279 |
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280 | p1[0] = v >> 24;
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281 | p1[1] = v >> 16;
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282 | p1[2] = v >> 8;
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283 | p1[3] = (uint8_t)v;
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284 | }
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285 |
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286 | #endif
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287 |
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288 | #ifdef WORDS_BIGENDIAN
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289 | #define cpu_to_32wu cpu_to_be32wu
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290 | #else
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291 | #define cpu_to_32wu cpu_to_le32wu
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292 | #endif
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293 |
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294 | #undef le_bswap
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295 | #undef be_bswap
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296 | #undef le_bswaps
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297 | #undef be_bswaps
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298 |
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299 | #endif /* BSWAP_H */
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