mirror of https://github.com/F-Stack/f-stack.git
117 lines
2.8 KiB
C
117 lines
2.8 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#ifndef _RTE_MEMCPY_H_
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#define _RTE_MEMCPY_H_
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/**
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* @file
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*
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* Functions for vectorised implementation of memcpy().
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*/
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/**
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* Copy 16 bytes from one location to another using optimised
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* instructions. The locations should not overlap.
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*
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* @param dst
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* Pointer to the destination of the data.
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* @param src
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* Pointer to the source data.
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*/
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static inline void
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rte_mov16(uint8_t *dst, const uint8_t *src);
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/**
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* Copy 32 bytes from one location to another using optimised
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* instructions. The locations should not overlap.
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*
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* @param dst
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* Pointer to the destination of the data.
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* @param src
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* Pointer to the source data.
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*/
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static inline void
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rte_mov32(uint8_t *dst, const uint8_t *src);
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#ifdef __DOXYGEN__
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/**
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* Copy 48 bytes from one location to another using optimised
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* instructions. The locations should not overlap.
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*
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* @param dst
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* Pointer to the destination of the data.
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* @param src
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* Pointer to the source data.
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*/
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static inline void
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rte_mov48(uint8_t *dst, const uint8_t *src);
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#endif /* __DOXYGEN__ */
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/**
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* Copy 64 bytes from one location to another using optimised
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* instructions. The locations should not overlap.
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*
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* @param dst
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* Pointer to the destination of the data.
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* @param src
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* Pointer to the source data.
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*/
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static inline void
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rte_mov64(uint8_t *dst, const uint8_t *src);
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/**
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* Copy 128 bytes from one location to another using optimised
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* instructions. The locations should not overlap.
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*
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* @param dst
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* Pointer to the destination of the data.
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* @param src
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* Pointer to the source data.
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*/
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static inline void
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rte_mov128(uint8_t *dst, const uint8_t *src);
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/**
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* Copy 256 bytes from one location to another using optimised
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* instructions. The locations should not overlap.
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*
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* @param dst
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* Pointer to the destination of the data.
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* @param src
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* Pointer to the source data.
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*/
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static inline void
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rte_mov256(uint8_t *dst, const uint8_t *src);
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#ifdef __DOXYGEN__
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/**
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* Copy bytes from one location to another. The locations must not overlap.
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*
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* @note This is implemented as a macro, so it's address should not be taken
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* and care is needed as parameter expressions may be evaluated multiple times.
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*
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* @note For x86 platforms to enable the AVX-512 memcpy implementation, set
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* -DRTE_MEMCPY_AVX512 macro in CFLAGS, or define the RTE_MEMCPY_AVX512 macro
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* explicitly in the source file before including the rte_memcpy header file.
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*
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* @param dst
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* Pointer to the destination of the data.
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* @param src
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* Pointer to the source data.
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* @param n
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* Number of bytes to copy.
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* @return
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* Pointer to the destination data.
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*/
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static void *
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rte_memcpy(void *dst, const void *src, size_t n);
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#endif /* __DOXYGEN__ */
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#endif /* _RTE_MEMCPY_H_ */
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