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endian: add little-endian helpers

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Change-Id: I38b910e90f567460443d44bbe3adef740c63d88c
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Daniel Verkamp 2016-11-11 15:18:12 -07:00
parent 8464f90039
commit 5a5f25d6cd
1 changed files with 63 additions and 0 deletions
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63
include/spdk/endian.h
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@ -108,6 +108,69 @@ to_be64(void *out, uint64_t in)
tmp[7] = in & 0xFF; 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 #ifdef __cplusplus
} }
#endif #endif