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author | Thomas Doerfler <Thomas.Doerfler@embedded-brains.de> | 2009-05-05 12:50:43 +0000 |
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committer | Thomas Doerfler <Thomas.Doerfler@embedded-brains.de> | 2009-05-05 12:50:43 +0000 |
commit | b074e80e192a4ef8b6b9ef540c1185f1f7154dbe (patch) | |
tree | 28d55b1e8406a9658841d4c553c198b592ef482c /cpukit/include | |
parent | Regenerate. (diff) | |
download | rtems-b074e80e192a4ef8b6b9ef540c1185f1f7154dbe.tar.bz2 |
Added functions to translate integers to/from byte streams.
Diffstat (limited to 'cpukit/include')
-rw-r--r-- | cpukit/include/rtems/endian.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/cpukit/include/rtems/endian.h b/cpukit/include/rtems/endian.h index 678b8bad3b..1321d244c2 100644 --- a/cpukit/include/rtems/endian.h +++ b/cpukit/include/rtems/endian.h @@ -89,4 +89,136 @@ static inline uint16_t htons( uint16_t _x ) #error "Unknown endian-ness for this cpu" #endif +static inline uint16_t rtems_uint16_from_little_endian( const uint8_t *data) +{ + uint16_t value = 0; + ssize_t i = 0; + + for (i = 1; i >= 0; --i) { + value = (uint16_t) ((value << 8) + data [i]); + } + + return value; +} + +static inline uint32_t rtems_uint32_from_little_endian( const uint8_t *data) +{ + uint32_t value = 0; + ssize_t i = 0; + + for (i = 3; i >= 0; --i) { + value = (value << 8) + data [i]; + } + + return value; +} + +static inline uint64_t rtems_uint64_from_little_endian( const uint8_t *data) +{ + uint64_t value = 0; + ssize_t i = 0; + + for (i = 7; i >= 0; --i) { + value = (value << 8) + (uint64_t) data [i]; + } + + return value; +} + +static inline uint16_t rtems_uint16_from_big_endian( const uint8_t *data) +{ + uint16_t value = 0; + size_t i = 0; + + for (i = 0; i < 2; ++i) { + value = (uint16_t) ((value << 8) + data [i]); + } + + return value; +} + +static inline uint32_t rtems_uint32_from_big_endian( const uint8_t *data) +{ + uint32_t value = 0; + size_t i = 0; + + for (i = 0; i < 4; ++i) { + value = (value << 8) + (uint32_t) data [i]; + } + + return value; +} + +static inline uint64_t rtems_uint64_from_big_endian( const uint8_t *data) +{ + uint64_t value = 0; + size_t i = 0; + + for (i = 0; i < 8; ++i) { + value = (value << 8) + (uint64_t) data [i]; + } + + return value; +} + +static inline void rtems_uint16_to_little_endian( uint16_t value, uint8_t *data) +{ + size_t i = 0; + + for (i = 0; i < 2; ++i) { + data [i] = (uint8_t) value; + value >>= 8; + } +} + +static inline void rtems_uint32_to_little_endian( uint32_t value, uint8_t *data) +{ + size_t i = 0; + + for (i = 0; i < 4; ++i) { + data [i] = (uint8_t) value; + value >>= 8; + } +} + +static inline void rtems_uint64_to_little_endian( uint64_t value, uint8_t *data) +{ + size_t i = 0; + + for (i = 0; i < 8; ++i) { + data [i] = (uint8_t) value; + value >>= 8; + } +} + +static inline void rtems_uint16_to_big_endian( uint16_t value, uint8_t *data) +{ + ssize_t i = 0; + + for (i = 1; i >= 0; --i) { + data [i] = (uint8_t) value; + value >>= 8; + } +} + +static inline void rtems_uint32_to_big_endian( uint32_t value, uint8_t *data) +{ + ssize_t i = 0; + + for (i = 3; i >= 0; --i) { + data [i] = (uint8_t) value; + value >>= 8; + } +} + +static inline void rtems_uint64_to_big_endian( uint64_t value, uint8_t *data) +{ + ssize_t i = 0; + + for (i = 7; i >= 0; --i) { + data [i] = (uint8_t) value; + value >>= 8; + } +} + #endif /* _RTEMS_ENDIAN_H */ |