Line data    Source code

       1             : /* Copyright (c) 2012 Josh Triplett <josh@joshtriplett.org>
       2             :  *
       3             :  * Permission is hereby granted, free of charge, to any person obtaining a copy
       4             :  * of this software and associated documentation files (the "Software"), to
       5             :  * deal in the Software without restriction, including without limitation the
       6             :  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
       7             :  * sell copies of the Software, and to permit persons to whom the Software is
       8             :  * furnished to do so, subject to the following conditions:
       9             :  *
      10             :  * The above copyright notice and this permission notice shall be included in
      11             :  * all copies or substantial portions of the Software.
      12             :  *
      13             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      14             :  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      15             :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
      16             :  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      17             :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      18             :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
      19             :  * IN THE SOFTWARE.
      20             :  */
      21             : #ifndef SPARSE_ENDIAN_H
      22             : #define SPARSE_ENDIAN_H
      23             : 
      24             : #include <byteswap.h>
      25             : #include <endian.h>
      26             : #include <stdint.h>
      27             : 
      28             : #ifdef __CHECKER__
      29             : #define __bitwise __attribute__((bitwise))
      30             : #define __force __attribute__((force))
      31             : #else
      32             : #define __bitwise
      33             : #define __force
      34             : #endif
      35             : 
      36             : typedef uint16_t __bitwise le16_t;
      37             : typedef uint16_t __bitwise be16_t;
      38             : typedef uint32_t __bitwise le32_t;
      39             : typedef uint32_t __bitwise be32_t;
      40             : typedef uint64_t __bitwise le64_t;
      41             : typedef uint64_t __bitwise be64_t;
      42             : 
      43             : #undef htobe16
      44             : #undef htole16
      45             : #undef be16toh
      46             : #undef le16toh
      47             : #undef htobe32
      48             : #undef htole32
      49             : #undef be32toh
      50             : #undef le32toh
      51             : #undef htobe64
      52             : #undef htole64
      53             : #undef be64toh
      54             : #undef le64toh
      55             : 
      56             : #if __BYTE_ORDER == __LITTLE_ENDIAN
      57             : #define bswap_16_on_le(x) __bswap_16(x)
      58             : #define bswap_32_on_le(x) __bswap_32(x)
      59             : #define bswap_64_on_le(x) __bswap_64(x)
      60             : #define bswap_16_on_be(x) (x)
      61             : #define bswap_32_on_be(x) (x)
      62             : #define bswap_64_on_be(x) (x)
      63             : #elif __BYTE_ORDER == __BIG_ENDIAN
      64             : #define bswap_16_on_le(x) (x)
      65             : #define bswap_32_on_le(x) (x)
      66             : #define bswap_64_on_le(x) (x)
      67             : #define bswap_16_on_be(x) __bswap_16(x)
      68             : #define bswap_32_on_be(x) __bswap_32(x)
      69             : #define bswap_64_on_be(x) __bswap_64(x)
      70             : #endif
      71             : 
      72             : static inline le16_t htole16(uint16_t value) { return (le16_t __force) bswap_16_on_be(value); }
      73          36 : static inline le32_t htole32(uint32_t value) { return (le32_t __force) bswap_32_on_be(value); }
      74     1041670 : static inline le64_t htole64(uint64_t value) { return (le64_t __force) bswap_64_on_be(value); }
      75             : 
      76          69 : static inline be16_t htobe16(uint16_t value) { return (be16_t __force) bswap_16_on_le(value); }
      77          31 : static inline be32_t htobe32(uint32_t value) { return (be32_t __force) bswap_32_on_le(value); }
      78             : static inline be64_t htobe64(uint64_t value) { return (be64_t __force) bswap_64_on_le(value); }
      79             : 
      80           0 : static inline uint16_t le16toh(le16_t value) { return bswap_16_on_be((uint16_t __force)value); }
      81       10033 : static inline uint32_t le32toh(le32_t value) { return bswap_32_on_be((uint32_t __force)value); }
      82     7185607 : static inline uint64_t le64toh(le64_t value) { return bswap_64_on_be((uint64_t __force)value); }
      83             : 
      84         155 : static inline uint16_t be16toh(be16_t value) { return bswap_16_on_le((uint16_t __force)value); }
      85          36 : static inline uint32_t be32toh(be32_t value) { return bswap_32_on_le((uint32_t __force)value); }
      86             : static inline uint64_t be64toh(be64_t value) { return bswap_64_on_le((uint64_t __force)value); }
      87             : 
      88             : #endif /* SPARSE_ENDIAN_H */