Commit 5a5f25d6 authored by Daniel Verkamp's avatar Daniel Verkamp
Browse files

endian: add little-endian helpers 



Change-Id: I38b910e90f567460443d44bbe3adef740c63d88c
Signed-off-by: default avatarDaniel Verkamp <daniel.verkamp@intel.com>
parent 8464f900

include/spdk/endian.h

+63 −0
Original line number Diff line number Diff line
@@ -108,6 +108,69 @@ to_be64(void *out, uint64_t in) 
	tmp[7] = in & 0xFF;

}



static inline uint16_t

from_le16(void *ptr)

{

	uint8_t *tmp = (uint8_t *)ptr;

	return (((uint16_t)tmp[1] << 8) | tmp[0]);

}



static inline void

to_le16(void *out, uint16_t in)

{

	uint8_t *tmp = (uint8_t *)out;

	tmp[1] = (in >> 8) & 0xFF;

	tmp[0] = in & 0xFF;

}



static inline uint32_t

from_le32(void *ptr)

{

	uint8_t *tmp = (uint8_t *)ptr;

	return (((uint32_t)tmp[3] << 24) |

		((uint32_t)tmp[2] << 16) |

		((uint32_t)tmp[1] << 8) |

		((uint32_t)tmp[0]));

}



static inline void

to_le32(void *out, uint32_t in)

{

	uint8_t *tmp = (uint8_t *)out;

	tmp[3] = (in >> 24) & 0xFF;

	tmp[2] = (in >> 16) & 0xFF;

	tmp[1] = (in >> 8) & 0xFF;

	tmp[0] = in & 0xFF;

}



static inline uint64_t

from_le64(void *ptr)

{

	uint8_t *tmp = (uint8_t *)ptr;

	return (((uint64_t)tmp[7] << 56) |

		((uint64_t)tmp[6] << 48) |

		((uint64_t)tmp[5] << 40) |

		((uint64_t)tmp[4] << 32) |

		((uint64_t)tmp[3] << 24) |

		((uint64_t)tmp[2] << 16) |

		((uint64_t)tmp[1] << 8) |

		((uint64_t)tmp[0]));

}



static inline void

to_le64(void *out, uint64_t in)

{

	uint8_t *tmp = (uint8_t *)out;

	tmp[7] = (in >> 56) & 0xFF;

	tmp[6] = (in >> 48) & 0xFF;

	tmp[5] = (in >> 40) & 0xFF;

	tmp[4] = (in >> 32) & 0xFF;

	tmp[3] = (in >> 24) & 0xFF;

	tmp[2] = (in >> 16) & 0xFF;

	tmp[1] = (in >> 8) & 0xFF;

	tmp[0] = in & 0xFF;

}



#ifdef __cplusplus

}

#endif