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Diffstat (limited to '')
| -rw-r--r-- | src/spdk/include/spdk/endian.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/src/spdk/include/spdk/endian.h b/src/spdk/include/spdk/endian.h new file mode 100644 index 00000000..116b7fb9 --- /dev/null +++ b/src/spdk/include/spdk/endian.h @@ -0,0 +1,178 @@ +/*- + * BSD LICENSE + * + * Copyright (c) Intel Corporation. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * Endian conversion functions + */ + +#ifndef SPDK_ENDIAN_H +#define SPDK_ENDIAN_H + +#include "spdk/stdinc.h" + +#ifdef __cplusplus +extern "C" { +#endif + +static inline uint16_t +from_be16(const void *ptr) +{ + const uint8_t *tmp = (const uint8_t *)ptr; + return (((uint16_t)tmp[0] << 8) | tmp[1]); +} + +static inline void +to_be16(void *out, uint16_t in) +{ + uint8_t *tmp = (uint8_t *)out; + tmp[0] = (in >> 8) & 0xFF; + tmp[1] = in & 0xFF; +} + +static inline uint32_t +from_be32(const void *ptr) +{ + const uint8_t *tmp = (const uint8_t *)ptr; + return (((uint32_t)tmp[0] << 24) | + ((uint32_t)tmp[1] << 16) | + ((uint32_t)tmp[2] << 8) | + ((uint32_t)tmp[3])); +} + +static inline void +to_be32(void *out, uint32_t in) +{ + uint8_t *tmp = (uint8_t *)out; + tmp[0] = (in >> 24) & 0xFF; + tmp[1] = (in >> 16) & 0xFF; + tmp[2] = (in >> 8) & 0xFF; + tmp[3] = in & 0xFF; +} + +static inline uint64_t +from_be64(const void *ptr) +{ + const uint8_t *tmp = (const uint8_t *)ptr; + return (((uint64_t)tmp[0] << 56) | + ((uint64_t)tmp[1] << 48) | + ((uint64_t)tmp[2] << 40) | + ((uint64_t)tmp[3] << 32) | + ((uint64_t)tmp[4] << 24) | + ((uint64_t)tmp[5] << 16) | + ((uint64_t)tmp[6] << 8) | + ((uint64_t)tmp[7])); +} + +static inline void +to_be64(void *out, uint64_t in) +{ + uint8_t *tmp = (uint8_t *)out; + tmp[0] = (in >> 56) & 0xFF; + tmp[1] = (in >> 48) & 0xFF; + tmp[2] = (in >> 40) & 0xFF; + tmp[3] = (in >> 32) & 0xFF; + tmp[4] = (in >> 24) & 0xFF; + tmp[5] = (in >> 16) & 0xFF; + tmp[6] = (in >> 8) & 0xFF; + tmp[7] = in & 0xFF; +} + +static inline uint16_t +from_le16(const void *ptr) +{ + const uint8_t *tmp = (const 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(const void *ptr) +{ + const uint8_t *tmp = (const 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(const void *ptr) +{ + const uint8_t *tmp = (const 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 + +#endif |