src/compat/endian.h

   1 // Copyright (c) 2014-2017 The Bitcoin Core developers
   2 // Distributed under the MIT software license, see the accompanying
   3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4
   5 #ifndef BITCOIN_COMPAT_ENDIAN_H
   6 #define BITCOIN_COMPAT_ENDIAN_H
   7
   8 #if defined(HAVE_CONFIG_H)
   9 #include <config/bitcoin-config.h>
  10 #endif
  11
  12 #include <compat/byteswap.h>
  13
  14 #include <stdint.h>
  15
  16 #if defined(HAVE_ENDIAN_H)
  17 #include <endian.h>
  18 #elif defined(HAVE_SYS_ENDIAN_H)
  19 #include <sys/endian.h>
  20 #endif
  21
  22 #if defined(WORDS_BIGENDIAN)
  23
  24 #if HAVE_DECL_HTOBE16 == 0
  25 inline uint16_t htobe16(uint16_t host_16bits)
  26 {
  27     return host_16bits;
  28 }
  29 #endif // HAVE_DECL_HTOBE16
  30
  31 #if HAVE_DECL_HTOLE16 == 0
  32 inline uint16_t htole16(uint16_t host_16bits)
  33 {
  34     return bswap_16(host_16bits);
  35 }
  36 #endif // HAVE_DECL_HTOLE16
  37
  38 #if HAVE_DECL_BE16TOH == 0
  39 inline uint16_t be16toh(uint16_t big_endian_16bits)
  40 {
  41     return big_endian_16bits;
  42 }
  43 #endif // HAVE_DECL_BE16TOH
  44
  45 #if HAVE_DECL_LE16TOH == 0
  46 inline uint16_t le16toh(uint16_t little_endian_16bits)
  47 {
  48     return bswap_16(little_endian_16bits);
  49 }
  50 #endif // HAVE_DECL_LE16TOH
  51
  52 #if HAVE_DECL_HTOBE32 == 0
  53 inline uint32_t htobe32(uint32_t host_32bits)
  54 {
  55     return host_32bits;
  56 }
  57 #endif // HAVE_DECL_HTOBE32
  58
  59 #if HAVE_DECL_HTOLE32 == 0
  60 inline uint32_t htole32(uint32_t host_32bits)
  61 {
  62     return bswap_32(host_32bits);
  63 }
  64 #endif // HAVE_DECL_HTOLE32
  65
  66 #if HAVE_DECL_BE32TOH == 0
  67 inline uint32_t be32toh(uint32_t big_endian_32bits)
  68 {
  69     return big_endian_32bits;
  70 }
  71 #endif // HAVE_DECL_BE32TOH
  72
  73 #if HAVE_DECL_LE32TOH == 0
  74 inline uint32_t le32toh(uint32_t little_endian_32bits)
  75 {
  76     return bswap_32(little_endian_32bits);
  77 }
  78 #endif // HAVE_DECL_LE32TOH
  79
  80 #if HAVE_DECL_HTOBE64 == 0
  81 inline uint64_t htobe64(uint64_t host_64bits)
  82 {
  83     return host_64bits;
  84 }
  85 #endif // HAVE_DECL_HTOBE64
  86
  87 #if HAVE_DECL_HTOLE64 == 0
  88 inline uint64_t htole64(uint64_t host_64bits)
  89 {
  90     return bswap_64(host_64bits);
  91 }
  92 #endif // HAVE_DECL_HTOLE64
  93
  94 #if HAVE_DECL_BE64TOH == 0
  95 inline uint64_t be64toh(uint64_t big_endian_64bits)
  96 {
  97     return big_endian_64bits;
  98 }
  99 #endif // HAVE_DECL_BE64TOH
 100
 101 #if HAVE_DECL_LE64TOH == 0
 102 inline uint64_t le64toh(uint64_t little_endian_64bits)
 103 {
 104     return bswap_64(little_endian_64bits);
 105 }
 106 #endif // HAVE_DECL_LE64TOH
 107
 108 #else // WORDS_BIGENDIAN
 109
 110 #if HAVE_DECL_HTOBE16 == 0
 111 inline uint16_t htobe16(uint16_t host_16bits)
 112 {
 113     return bswap_16(host_16bits);
 114 }
 115 #endif // HAVE_DECL_HTOBE16
 116
 117 #if HAVE_DECL_HTOLE16 == 0
 118 inline uint16_t htole16(uint16_t host_16bits)
 119 {
 120     return host_16bits;
 121 }
 122 #endif // HAVE_DECL_HTOLE16
 123
 124 #if HAVE_DECL_BE16TOH == 0
 125 inline uint16_t be16toh(uint16_t big_endian_16bits)
 126 {
 127     return bswap_16(big_endian_16bits);
 128 }
 129 #endif // HAVE_DECL_BE16TOH
 130
 131 #if HAVE_DECL_LE16TOH == 0
 132 inline uint16_t le16toh(uint16_t little_endian_16bits)
 133 {
 134     return little_endian_16bits;
 135 }
 136 #endif // HAVE_DECL_LE16TOH
 137
 138 #if HAVE_DECL_HTOBE32 == 0
 139 inline uint32_t htobe32(uint32_t host_32bits)
 140 {
 141     return bswap_32(host_32bits);
 142 }
 143 #endif // HAVE_DECL_HTOBE32
 144
 145 #if HAVE_DECL_HTOLE32 == 0
 146 inline uint32_t htole32(uint32_t host_32bits)
 147 {
 148     return host_32bits;
 149 }
 150 #endif // HAVE_DECL_HTOLE32
 151
 152 #if HAVE_DECL_BE32TOH == 0
 153 inline uint32_t be32toh(uint32_t big_endian_32bits)
 154 {
 155     return bswap_32(big_endian_32bits);
 156 }
 157 #endif // HAVE_DECL_BE32TOH
 158
 159 #if HAVE_DECL_LE32TOH == 0
 160 inline uint32_t le32toh(uint32_t little_endian_32bits)
 161 {
 162     return little_endian_32bits;
 163 }
 164 #endif // HAVE_DECL_LE32TOH
 165
 166 #if HAVE_DECL_HTOBE64 == 0
 167 inline uint64_t htobe64(uint64_t host_64bits)
 168 {
 169     return bswap_64(host_64bits);
 170 }
 171 #endif // HAVE_DECL_HTOBE64
 172
 173 #if HAVE_DECL_HTOLE64 == 0
 174 inline uint64_t htole64(uint64_t host_64bits)
 175 {
 176     return host_64bits;
 177 }
 178 #endif // HAVE_DECL_HTOLE64
 179
 180 #if HAVE_DECL_BE64TOH == 0
 181 inline uint64_t be64toh(uint64_t big_endian_64bits)
 182 {
 183     return bswap_64(big_endian_64bits);
 184 }
 185 #endif // HAVE_DECL_BE64TOH
 186
 187 #if HAVE_DECL_LE64TOH == 0
 188 inline uint64_t le64toh(uint64_t little_endian_64bits)
 189 {
 190     return little_endian_64bits;
 191 }
 192 #endif // HAVE_DECL_LE64TOH
 193
 194 #endif // WORDS_BIGENDIAN
 195
 196 #endif // BITCOIN_COMPAT_ENDIAN_H