-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
- */
-
-#ifndef _RTE_MEMCPY_X86_64_H_
-#define _RTE_MEMCPY_X86_64_H_
-
-/**
- * @file
- *
- * Functions for SSE/AVX/AVX2/AVX512 implementation of memcpy().
- */
-
-#include <stdio.h>
-#include <stdint.h>
-#include <string.h>
-#include <rte_vect.h>
-#include <rte_common.h>
-#include <rte_config.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * Copy bytes from one location to another. The locations must not overlap.
- *
- * @note This is implemented as a macro, so it's address should not be taken
- * and care is needed as parameter expressions may be evaluated multiple times.
- *
- * @param dst
- * Pointer to the destination of the data.
- * @param src
- * Pointer to the source data.
- * @param n
- * Number of bytes to copy.
- * @return
- * Pointer to the destination data.
- */
-static __rte_always_inline void *
-rte_memcpy(void *dst, const void *src, size_t n);
-
-#ifdef RTE_MACHINE_CPUFLAG_AVX512F
-
-#define ALIGNMENT_MASK 0x3F
-
-/**
- * AVX512 implementation below
- */
-
-/**
- * Copy 16 bytes from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov16(uint8_t *dst, const uint8_t *src)
-{
- __m128i xmm0;
-
- xmm0 = _mm_loadu_si128((const __m128i *)src);
- _mm_storeu_si128((__m128i *)dst, xmm0);
-}
-
-/**
- * Copy 32 bytes from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov32(uint8_t *dst, const uint8_t *src)
-{
- __m256i ymm0;
-
- ymm0 = _mm256_loadu_si256((const __m256i *)src);
- _mm256_storeu_si256((__m256i *)dst, ymm0);
-}
-
-/**
- * Copy 64 bytes from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov64(uint8_t *dst, const uint8_t *src)
-{
- __m512i zmm0;
-
- zmm0 = _mm512_loadu_si512((const void *)src);
- _mm512_storeu_si512((void *)dst, zmm0);
-}
-
-/**
- * Copy 128 bytes from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov128(uint8_t *dst, const uint8_t *src)
-{
- rte_mov64(dst + 0 * 64, src + 0 * 64);
- rte_mov64(dst + 1 * 64, src + 1 * 64);
-}
-
-/**
- * Copy 256 bytes from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov256(uint8_t *dst, const uint8_t *src)
-{
- rte_mov64(dst + 0 * 64, src + 0 * 64);
- rte_mov64(dst + 1 * 64, src + 1 * 64);
- rte_mov64(dst + 2 * 64, src + 2 * 64);
- rte_mov64(dst + 3 * 64, src + 3 * 64);
-}
-
-/**
- * Copy 128-byte blocks from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov128blocks(uint8_t *dst, const uint8_t *src, size_t n)
-{
- __m512i zmm0, zmm1;
-
- while (n >= 128) {
- zmm0 = _mm512_loadu_si512((const void *)(src + 0 * 64));
- n -= 128;
- zmm1 = _mm512_loadu_si512((const void *)(src + 1 * 64));
- src = src + 128;
- _mm512_storeu_si512((void *)(dst + 0 * 64), zmm0);
- _mm512_storeu_si512((void *)(dst + 1 * 64), zmm1);
- dst = dst + 128;
- }
-}
-
-/**
- * Copy 512-byte blocks from one location to another,
- * locations should not overlap.
- */
-static inline void
-rte_mov512blocks(uint8_t *dst, const uint8_t *src, size_t n)
-{
- __m512i zmm0, zmm1, zmm2, zmm3, zmm4, zmm5, zmm6, zmm7;
-
- while (n >= 512) {
- zmm0 = _mm512_loadu_si512((const void *)(src + 0 * 64));
- n -= 512;
- zmm1 = _mm512_loadu_si512((const void *)(src + 1 * 64));
- zmm2 = _mm512_loadu_si512((const void *)(src + 2 * 64));
- zmm3 = _mm512_loadu_si512((const void *)(src + 3 * 64));
- zmm4 = _mm512_loadu_si512((const void *)(src + 4 * 64));
- zmm5 = _mm512_loadu_si512((const void *)(src + 5 * 64));
- zmm6 = _mm512_loadu_si512((const void *)(src + 6 * 64));
- zmm7 = _mm512_loadu_si512((const void *)(src + 7 * 64));
- src = src + 512;
- _mm512_storeu_si512((void *)(dst + 0 * 64), zmm0);
- _mm512_storeu_si512((void *)(dst + 1 * 64), zmm1);
- _mm512_storeu_si512((void *)(dst + 2 * 64), zmm2);
- _mm512_storeu_si512((void *)(dst + 3 * 64), zmm3);
- _mm512_storeu_si512((void *)(dst + 4 * 64), zmm4);
- _mm512_storeu_si512((void *)(dst + 5 * 64), zmm5);
- _mm512_storeu_si512((void *)(dst + 6 * 64), zmm6);
- _mm512_storeu_si512((void *)(dst + 7 * 64), zmm7);
- dst = dst + 512;
- }
-}
-
-static __rte_always_inline void *
-rte_memcpy_generic(void *dst, const void *src, size_t n)
-{
- uintptr_t dstu = (uintptr_t)dst;
- uintptr_t srcu = (uintptr_t)src;
- void *ret = dst;
- size_t dstofss;
- size_t bits;
-
- /**
- * Copy less than 16 bytes
- */
- if (n < 16) {
- if (n & 0x01) {
- *(uint8_t *)dstu = *(const uint8_t *)srcu;
- srcu = (uintptr_t)((const uint8_t *)srcu + 1);
- dstu = (uintptr_t)((uint8_t *)dstu + 1);
- }
- if (n & 0x02) {
- *(uint16_t *)dstu = *(const uint16_t *)srcu;
- srcu = (uintptr_t)((const uint16_t *)srcu + 1);
- dstu = (uintptr_t)((uint16_t *)dstu + 1);
- }
- if (n & 0x04) {
- *(uint32_t *)dstu = *(const uint32_t *)srcu;
- srcu = (uintptr_t)((const uint32_t *)srcu + 1);
- dstu = (uintptr_t)((uint32_t *)dstu + 1);
- }
- if (n & 0x08)
- *(uint64_t *)dstu = *(const uint64_t *)srcu;
- return ret;
- }
-
- /**
- * Fast way when copy size doesn't exceed 512 bytes
- */
- if (n <= 32) {
- rte_mov16((uint8_t *)dst, (const uint8_t *)src);
- rte_mov16((uint8_t *)dst - 16 + n,
- (const uint8_t *)src - 16 + n);
- return ret;
- }
- if (n <= 64) {
- rte_mov32((uint8_t *)dst, (const uint8_t *)src);
- rte_mov32((uint8_t *)dst - 32 + n,
- (const uint8_t *)src - 32 + n);
- return ret;
- }
- if (n <= 512) {
- if (n >= 256) {
- n -= 256;
- rte_mov256((uint8_t *)dst, (const uint8_t *)src);
- src = (const uint8_t *)src + 256;
- dst = (uint8_t *)dst + 256;
- }
- if (n >= 128) {
- n -= 128;
- rte_mov128((uint8_t *)dst, (const uint8_t *)src);
- src = (const uint8_t *)src + 128;
- dst = (uint8_t *)dst + 128;
- }
-COPY_BLOCK_128_BACK63:
- if (n > 64) {
- rte_mov64((uint8_t *)dst, (const uint8_t *)src);
- rte_mov64((uint8_t *)dst - 64 + n,
- (const uint8_t *)src - 64 + n);
- return ret;
- }
- if (n > 0)
- rte_mov64((uint8_t *)dst - 64 + n,
- (const uint8_t *)src - 64 + n);
- return ret;
- }
-
- /**
- * Make store aligned when copy size exceeds 512 bytes
- */
- dstofss = ((uintptr_t)dst & 0x3F);
- if (dstofss > 0) {
- dstofss = 64 - dstofss;
- n -= dstofss;
- rte_mov64((uint8_t *)dst, (const uint8_t *)src);
- src = (const uint8_t *)src + dstofss;
- dst = (uint8_t *)dst + dstofss;
- }
-
- /**
- * Copy 512-byte blocks.
- * Use copy block function for better instruction order control,
- * which is important when load is unaligned.
- */
- rte_mov512blocks((uint8_t *)dst, (const uint8_t *)src, n);
- bits = n;
- n = n & 511;
- bits -= n;
- src = (const uint8_t *)src + bits;
- dst = (uint8_t *)dst + bits;
-
- /**
- * Copy 128-byte blocks.
- * Use copy block function for better instruction order control,
- * which is important when load is unaligned.
- */
- if (n >= 128) {
- rte_mov128blocks((uint8_t *)dst, (const uint8_t *)src, n);
- bits = n;
- n = n & 127;
- bits -= n;
- src = (const uint8_t *)src + bits;
- dst = (uint8_t *)dst + bits;
- }
-
- /**
- * Copy whatever left
- */
- goto COPY_BLOCK_128_BACK63;
-}
-
-#elif defined RTE_MACHINE_CPUFLAG_AVX2
-
-#define ALIGNMENT_MASK 0x1F
-
-/**
- * AVX2 implementation below
- */
-
-/**
- * Copy 16 bytes from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov16(uint8_t *dst, const uint8_t *src)
-{
- __m128i xmm0;
-
- xmm0 = _mm_loadu_si128((const __m128i *)src);
- _mm_storeu_si128((__m128i *)dst, xmm0);
-}
-
-/**
- * Copy 32 bytes from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov32(uint8_t *dst, const uint8_t *src)
-{
- __m256i ymm0;
-
- ymm0 = _mm256_loadu_si256((const __m256i *)src);
- _mm256_storeu_si256((__m256i *)dst, ymm0);
-}
-
-/**
- * Copy 64 bytes from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov64(uint8_t *dst, const uint8_t *src)
-{
- rte_mov32((uint8_t *)dst + 0 * 32, (const uint8_t *)src + 0 * 32);
- rte_mov32((uint8_t *)dst + 1 * 32, (const uint8_t *)src + 1 * 32);
-}
-
-/**
- * Copy 128 bytes from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov128(uint8_t *dst, const uint8_t *src)
-{
- rte_mov32((uint8_t *)dst + 0 * 32, (const uint8_t *)src + 0 * 32);
- rte_mov32((uint8_t *)dst + 1 * 32, (const uint8_t *)src + 1 * 32);
- rte_mov32((uint8_t *)dst + 2 * 32, (const uint8_t *)src + 2 * 32);
- rte_mov32((uint8_t *)dst + 3 * 32, (const uint8_t *)src + 3 * 32);
-}
-
-/**
- * Copy 128-byte blocks from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov128blocks(uint8_t *dst, const uint8_t *src, size_t n)
-{
- __m256i ymm0, ymm1, ymm2, ymm3;
-
- while (n >= 128) {
- ymm0 = _mm256_loadu_si256((const __m256i *)((const uint8_t *)src + 0 * 32));
- n -= 128;
- ymm1 = _mm256_loadu_si256((const __m256i *)((const uint8_t *)src + 1 * 32));
- ymm2 = _mm256_loadu_si256((const __m256i *)((const uint8_t *)src + 2 * 32));
- ymm3 = _mm256_loadu_si256((const __m256i *)((const uint8_t *)src + 3 * 32));
- src = (const uint8_t *)src + 128;
- _mm256_storeu_si256((__m256i *)((uint8_t *)dst + 0 * 32), ymm0);
- _mm256_storeu_si256((__m256i *)((uint8_t *)dst + 1 * 32), ymm1);
- _mm256_storeu_si256((__m256i *)((uint8_t *)dst + 2 * 32), ymm2);
- _mm256_storeu_si256((__m256i *)((uint8_t *)dst + 3 * 32), ymm3);
- dst = (uint8_t *)dst + 128;
- }
-}
-
-static __rte_always_inline void *
-rte_memcpy_generic(void *dst, const void *src, size_t n)
-{
- uintptr_t dstu = (uintptr_t)dst;
- uintptr_t srcu = (uintptr_t)src;
- void *ret = dst;
- size_t dstofss;
- size_t bits;
-
- /**
- * Copy less than 16 bytes
- */
- if (n < 16) {
- if (n & 0x01) {
- *(uint8_t *)dstu = *(const uint8_t *)srcu;
- srcu = (uintptr_t)((const uint8_t *)srcu + 1);
- dstu = (uintptr_t)((uint8_t *)dstu + 1);
- }
- if (n & 0x02) {
- *(uint16_t *)dstu = *(const uint16_t *)srcu;
- srcu = (uintptr_t)((const uint16_t *)srcu + 1);
- dstu = (uintptr_t)((uint16_t *)dstu + 1);
- }
- if (n & 0x04) {
- *(uint32_t *)dstu = *(const uint32_t *)srcu;
- srcu = (uintptr_t)((const uint32_t *)srcu + 1);
- dstu = (uintptr_t)((uint32_t *)dstu + 1);
- }
- if (n & 0x08) {
- *(uint64_t *)dstu = *(const uint64_t *)srcu;
- }
- return ret;
- }
-
- /**
- * Fast way when copy size doesn't exceed 256 bytes
- */
- if (n <= 32) {
- rte_mov16((uint8_t *)dst, (const uint8_t *)src);
- rte_mov16((uint8_t *)dst - 16 + n,
- (const uint8_t *)src - 16 + n);
- return ret;
- }
- if (n <= 48) {
- rte_mov16((uint8_t *)dst, (const uint8_t *)src);
- rte_mov16((uint8_t *)dst + 16, (const uint8_t *)src + 16);
- rte_mov16((uint8_t *)dst - 16 + n,
- (const uint8_t *)src - 16 + n);
- return ret;
- }
- if (n <= 64) {
- rte_mov32((uint8_t *)dst, (const uint8_t *)src);
- rte_mov32((uint8_t *)dst - 32 + n,
- (const uint8_t *)src - 32 + n);
- return ret;
- }
- if (n <= 256) {
- if (n >= 128) {
- n -= 128;
- rte_mov128((uint8_t *)dst, (const uint8_t *)src);
- src = (const uint8_t *)src + 128;
- dst = (uint8_t *)dst + 128;
- }
-COPY_BLOCK_128_BACK31:
- if (n >= 64) {
- n -= 64;
- rte_mov64((uint8_t *)dst, (const uint8_t *)src);
- src = (const uint8_t *)src + 64;
- dst = (uint8_t *)dst + 64;
- }
- if (n > 32) {
- rte_mov32((uint8_t *)dst, (const uint8_t *)src);
- rte_mov32((uint8_t *)dst - 32 + n,
- (const uint8_t *)src - 32 + n);
- return ret;
- }
- if (n > 0) {
- rte_mov32((uint8_t *)dst - 32 + n,
- (const uint8_t *)src - 32 + n);
- }
- return ret;
- }
-
- /**
- * Make store aligned when copy size exceeds 256 bytes
- */
- dstofss = (uintptr_t)dst & 0x1F;
- if (dstofss > 0) {
- dstofss = 32 - dstofss;
- n -= dstofss;
- rte_mov32((uint8_t *)dst, (const uint8_t *)src);
- src = (const uint8_t *)src + dstofss;
- dst = (uint8_t *)dst + dstofss;
- }
-
- /**
- * Copy 128-byte blocks
- */
- rte_mov128blocks((uint8_t *)dst, (const uint8_t *)src, n);
- bits = n;
- n = n & 127;
- bits -= n;
- src = (const uint8_t *)src + bits;
- dst = (uint8_t *)dst + bits;
-
- /**
- * Copy whatever left
- */
- goto COPY_BLOCK_128_BACK31;
-}
-
-#else /* RTE_MACHINE_CPUFLAG */
-
-#define ALIGNMENT_MASK 0x0F
-
-/**
- * SSE & AVX implementation below
- */
-
-/**
- * Copy 16 bytes from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov16(uint8_t *dst, const uint8_t *src)
-{
- __m128i xmm0;
-
- xmm0 = _mm_loadu_si128((const __m128i *)(const __m128i *)src);
- _mm_storeu_si128((__m128i *)dst, xmm0);
-}
-
-/**
- * Copy 32 bytes from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov32(uint8_t *dst, const uint8_t *src)
-{
- rte_mov16((uint8_t *)dst + 0 * 16, (const uint8_t *)src + 0 * 16);
- rte_mov16((uint8_t *)dst + 1 * 16, (const uint8_t *)src + 1 * 16);
-}
-
-/**
- * Copy 64 bytes from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov64(uint8_t *dst, const uint8_t *src)
-{
- rte_mov16((uint8_t *)dst + 0 * 16, (const uint8_t *)src + 0 * 16);
- rte_mov16((uint8_t *)dst + 1 * 16, (const uint8_t *)src + 1 * 16);
- rte_mov16((uint8_t *)dst + 2 * 16, (const uint8_t *)src + 2 * 16);
- rte_mov16((uint8_t *)dst + 3 * 16, (const uint8_t *)src + 3 * 16);
-}
-
-/**
- * Copy 128 bytes from one location to another,
- * locations should not overlap.
- */
-static __rte_always_inline void
-rte_mov128(uint8_t *dst, const uint8_t *src)
-{
- rte_mov16((uint8_t *)dst + 0 * 16, (const uint8_t *)src + 0 * 16);
- rte_mov16((uint8_t *)dst + 1 * 16, (const uint8_t *)src + 1 * 16);
- rte_mov16((uint8_t *)dst + 2 * 16, (const uint8_t *)src + 2 * 16);
- rte_mov16((uint8_t *)dst + 3 * 16, (const uint8_t *)src + 3 * 16);
- rte_mov16((uint8_t *)dst + 4 * 16, (const uint8_t *)src + 4 * 16);
- rte_mov16((uint8_t *)dst + 5 * 16, (const uint8_t *)src + 5 * 16);
- rte_mov16((uint8_t *)dst + 6 * 16, (const uint8_t *)src + 6 * 16);
- rte_mov16((uint8_t *)dst + 7 * 16, (const uint8_t *)src + 7 * 16);
-}
-
-/**
- * Copy 256 bytes from one location to another,
- * locations should not overlap.
- */
-static inline void
-rte_mov256(uint8_t *dst, const uint8_t *src)
-{
- rte_mov16((uint8_t *)dst + 0 * 16, (const uint8_t *)src + 0 * 16);
- rte_mov16((uint8_t *)dst + 1 * 16, (const uint8_t *)src + 1 * 16);
- rte_mov16((uint8_t *)dst + 2 * 16, (const uint8_t *)src + 2 * 16);
- rte_mov16((uint8_t *)dst + 3 * 16, (const uint8_t *)src + 3 * 16);
- rte_mov16((uint8_t *)dst + 4 * 16, (const uint8_t *)src + 4 * 16);
- rte_mov16((uint8_t *)dst + 5 * 16, (const uint8_t *)src + 5 * 16);
- rte_mov16((uint8_t *)dst + 6 * 16, (const uint8_t *)src + 6 * 16);
- rte_mov16((uint8_t *)dst + 7 * 16, (const uint8_t *)src + 7 * 16);
- rte_mov16((uint8_t *)dst + 8 * 16, (const uint8_t *)src + 8 * 16);
- rte_mov16((uint8_t *)dst + 9 * 16, (const uint8_t *)src + 9 * 16);
- rte_mov16((uint8_t *)dst + 10 * 16, (const uint8_t *)src + 10 * 16);
- rte_mov16((uint8_t *)dst + 11 * 16, (const uint8_t *)src + 11 * 16);
- rte_mov16((uint8_t *)dst + 12 * 16, (const uint8_t *)src + 12 * 16);
- rte_mov16((uint8_t *)dst + 13 * 16, (const uint8_t *)src + 13 * 16);
- rte_mov16((uint8_t *)dst + 14 * 16, (const uint8_t *)src + 14 * 16);
- rte_mov16((uint8_t *)dst + 15 * 16, (const uint8_t *)src + 15 * 16);
-}
-
-/**
- * Macro for copying unaligned block from one location to another with constant load offset,
- * 47 bytes leftover maximum,
- * locations should not overlap.
- * Requirements:
- * - Store is aligned
- * - Load offset is <offset>, which must be immediate value within [1, 15]
- * - For <src>, make sure <offset> bit backwards & <16 - offset> bit forwards are available for loading
- * - <dst>, <src>, <len> must be variables
- * - __m128i <xmm0> ~ <xmm8> must be pre-defined
- */
-#define MOVEUNALIGNED_LEFT47_IMM(dst, src, len, offset) \
-__extension__ ({ \
- size_t tmp; \
- while (len >= 128 + 16 - offset) { \
- xmm0 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 0 * 16)); \
- len -= 128; \
- xmm1 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 1 * 16)); \
- xmm2 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 2 * 16)); \
- xmm3 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 3 * 16)); \
- xmm4 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 4 * 16)); \
- xmm5 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 5 * 16)); \
- xmm6 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 6 * 16)); \
- xmm7 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 7 * 16)); \
- xmm8 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 8 * 16)); \
- src = (const uint8_t *)src + 128; \
- _mm_storeu_si128((__m128i *)((uint8_t *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset)); \
- _mm_storeu_si128((__m128i *)((uint8_t *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset)); \
- _mm_storeu_si128((__m128i *)((uint8_t *)dst + 2 * 16), _mm_alignr_epi8(xmm3, xmm2, offset)); \
- _mm_storeu_si128((__m128i *)((uint8_t *)dst + 3 * 16), _mm_alignr_epi8(xmm4, xmm3, offset)); \
- _mm_storeu_si128((__m128i *)((uint8_t *)dst + 4 * 16), _mm_alignr_epi8(xmm5, xmm4, offset)); \
- _mm_storeu_si128((__m128i *)((uint8_t *)dst + 5 * 16), _mm_alignr_epi8(xmm6, xmm5, offset)); \
- _mm_storeu_si128((__m128i *)((uint8_t *)dst + 6 * 16), _mm_alignr_epi8(xmm7, xmm6, offset)); \
- _mm_storeu_si128((__m128i *)((uint8_t *)dst + 7 * 16), _mm_alignr_epi8(xmm8, xmm7, offset)); \
- dst = (uint8_t *)dst + 128; \
- } \
- tmp = len; \
- len = ((len - 16 + offset) & 127) + 16 - offset; \
- tmp -= len; \
- src = (const uint8_t *)src + tmp; \
- dst = (uint8_t *)dst + tmp; \
- if (len >= 32 + 16 - offset) { \
- while (len >= 32 + 16 - offset) { \
- xmm0 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 0 * 16)); \
- len -= 32; \
- xmm1 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 1 * 16)); \
- xmm2 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 2 * 16)); \
- src = (const uint8_t *)src + 32; \
- _mm_storeu_si128((__m128i *)((uint8_t *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset)); \
- _mm_storeu_si128((__m128i *)((uint8_t *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset)); \
- dst = (uint8_t *)dst + 32; \
- } \
- tmp = len; \
- len = ((len - 16 + offset) & 31) + 16 - offset; \
- tmp -= len; \
- src = (const uint8_t *)src + tmp; \
- dst = (uint8_t *)dst + tmp; \
- } \
-})
-
-/**
- * Macro for copying unaligned block from one location to another,
- * 47 bytes leftover maximum,
- * locations should not overlap.
- * Use switch here because the aligning instruction requires immediate value for shift count.
- * Requirements:
- * - Store is aligned
- * - Load offset is <offset>, which must be within [1, 15]
- * - For <src>, make sure <offset> bit backwards & <16 - offset> bit forwards are available for loading
- * - <dst>, <src>, <len> must be variables
- * - __m128i <xmm0> ~ <xmm8> used in MOVEUNALIGNED_LEFT47_IMM must be pre-defined
- */
-#define MOVEUNALIGNED_LEFT47(dst, src, len, offset) \
-__extension__ ({ \
- switch (offset) { \
- case 0x01: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x01); break; \
- case 0x02: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x02); break; \
- case 0x03: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x03); break; \
- case 0x04: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x04); break; \
- case 0x05: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x05); break; \
- case 0x06: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x06); break; \
- case 0x07: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x07); break; \
- case 0x08: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x08); break; \
- case 0x09: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x09); break; \
- case 0x0A: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0A); break; \
- case 0x0B: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0B); break; \
- case 0x0C: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0C); break; \
- case 0x0D: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0D); break; \
- case 0x0E: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0E); break; \
- case 0x0F: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0F); break; \
- default:; \
- } \
-})
-
-static __rte_always_inline void *
-rte_memcpy_generic(void *dst, const void *src, size_t n)
-{
- __m128i xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8;
- uintptr_t dstu = (uintptr_t)dst;
- uintptr_t srcu = (uintptr_t)src;
- void *ret = dst;
- size_t dstofss;
- size_t srcofs;
-
- /**
- * Copy less than 16 bytes
- */
- if (n < 16) {
- if (n & 0x01) {
- *(uint8_t *)dstu = *(const uint8_t *)srcu;
- srcu = (uintptr_t)((const uint8_t *)srcu + 1);
- dstu = (uintptr_t)((uint8_t *)dstu + 1);
- }
- if (n & 0x02) {
- *(uint16_t *)dstu = *(const uint16_t *)srcu;
- srcu = (uintptr_t)((const uint16_t *)srcu + 1);
- dstu = (uintptr_t)((uint16_t *)dstu + 1);
- }
- if (n & 0x04) {
- *(uint32_t *)dstu = *(const uint32_t *)srcu;
- srcu = (uintptr_t)((const uint32_t *)srcu + 1);
- dstu = (uintptr_t)((uint32_t *)dstu + 1);
- }
- if (n & 0x08) {
- *(uint64_t *)dstu = *(const uint64_t *)srcu;
- }
- return ret;
- }
-
- /**
- * Fast way when copy size doesn't exceed 512 bytes
- */
- if (n <= 32) {
- rte_mov16((uint8_t *)dst, (const uint8_t *)src);
- rte_mov16((uint8_t *)dst - 16 + n, (const uint8_t *)src - 16 + n);
- return ret;
- }
- if (n <= 48) {
- rte_mov32((uint8_t *)dst, (const uint8_t *)src);
- rte_mov16((uint8_t *)dst - 16 + n, (const uint8_t *)src - 16 + n);
- return ret;
- }
- if (n <= 64) {
- rte_mov32((uint8_t *)dst, (const uint8_t *)src);
- rte_mov16((uint8_t *)dst + 32, (const uint8_t *)src + 32);
- rte_mov16((uint8_t *)dst - 16 + n, (const uint8_t *)src - 16 + n);
- return ret;
- }
- if (n <= 128) {
- goto COPY_BLOCK_128_BACK15;
- }
- if (n <= 512) {
- if (n >= 256) {
- n -= 256;
- rte_mov128((uint8_t *)dst, (const uint8_t *)src);
- rte_mov128((uint8_t *)dst + 128, (const uint8_t *)src + 128);
- src = (const uint8_t *)src + 256;
- dst = (uint8_t *)dst + 256;
- }
-COPY_BLOCK_255_BACK15:
- if (n >= 128) {
- n -= 128;
- rte_mov128((uint8_t *)dst, (const uint8_t *)src);
- src = (const uint8_t *)src + 128;
- dst = (uint8_t *)dst + 128;
- }
-COPY_BLOCK_128_BACK15:
- if (n >= 64) {
- n -= 64;
- rte_mov64((uint8_t *)dst, (const uint8_t *)src);
- src = (const uint8_t *)src + 64;
- dst = (uint8_t *)dst + 64;
- }
-COPY_BLOCK_64_BACK15:
- if (n >= 32) {
- n -= 32;
- rte_mov32((uint8_t *)dst, (const uint8_t *)src);
- src = (const uint8_t *)src + 32;
- dst = (uint8_t *)dst + 32;
- }
- if (n > 16) {
- rte_mov16((uint8_t *)dst, (const uint8_t *)src);
- rte_mov16((uint8_t *)dst - 16 + n, (const uint8_t *)src - 16 + n);
- return ret;
- }
- if (n > 0) {
- rte_mov16((uint8_t *)dst - 16 + n, (const uint8_t *)src - 16 + n);
- }
- return ret;
- }
-
- /**
- * Make store aligned when copy size exceeds 512 bytes,
- * and make sure the first 15 bytes are copied, because
- * unaligned copy functions require up to 15 bytes
- * backwards access.
- */
- dstofss = (uintptr_t)dst & 0x0F;
- if (dstofss > 0) {
- dstofss = 16 - dstofss + 16;
- n -= dstofss;
- rte_mov32((uint8_t *)dst, (const uint8_t *)src);
- src = (const uint8_t *)src + dstofss;
- dst = (uint8_t *)dst + dstofss;
- }
- srcofs = ((uintptr_t)src & 0x0F);
-
- /**
- * For aligned copy
- */
- if (srcofs == 0) {
- /**
- * Copy 256-byte blocks
- */
- for (; n >= 256; n -= 256) {
- rte_mov256((uint8_t *)dst, (const uint8_t *)src);
- dst = (uint8_t *)dst + 256;
- src = (const uint8_t *)src + 256;
- }
-
- /**
- * Copy whatever left
- */
- goto COPY_BLOCK_255_BACK15;
- }
-
- /**
- * For copy with unaligned load
- */
- MOVEUNALIGNED_LEFT47(dst, src, n, srcofs);
-
- /**
- * Copy whatever left
- */
- goto COPY_BLOCK_64_BACK15;
-}
-
-#endif /* RTE_MACHINE_CPUFLAG */
-
-static __rte_always_inline void *
-rte_memcpy_aligned(void *dst, const void *src, size_t n)
-{
- void *ret = dst;
-
- /* Copy size <= 16 bytes */
- if (n < 16) {
- if (n & 0x01) {
- *(uint8_t *)dst = *(const uint8_t *)src;
- src = (const uint8_t *)src + 1;
- dst = (uint8_t *)dst + 1;
- }
- if (n & 0x02) {
- *(uint16_t *)dst = *(const uint16_t *)src;
- src = (const uint16_t *)src + 1;
- dst = (uint16_t *)dst + 1;
- }
- if (n & 0x04) {
- *(uint32_t *)dst = *(const uint32_t *)src;
- src = (const uint32_t *)src + 1;
- dst = (uint32_t *)dst + 1;
- }
- if (n & 0x08)
- *(uint64_t *)dst = *(const uint64_t *)src;
-
- return ret;
- }
-
- /* Copy 16 <= size <= 32 bytes */
- if (n <= 32) {
- rte_mov16((uint8_t *)dst, (const uint8_t *)src);
- rte_mov16((uint8_t *)dst - 16 + n,
- (const uint8_t *)src - 16 + n);
-
- return ret;
- }
-
- /* Copy 32 < size <= 64 bytes */
- if (n <= 64) {
- rte_mov32((uint8_t *)dst, (const uint8_t *)src);
- rte_mov32((uint8_t *)dst - 32 + n,
- (const uint8_t *)src - 32 + n);
-
- return ret;
- }
-
- /* Copy 64 bytes blocks */
- for (; n >= 64; n -= 64) {
- rte_mov64((uint8_t *)dst, (const uint8_t *)src);
- dst = (uint8_t *)dst + 64;
- src = (const uint8_t *)src + 64;
- }
-
- /* Copy whatever left */
- rte_mov64((uint8_t *)dst - 64 + n,
- (const uint8_t *)src - 64 + n);
-
- return ret;
-}
-
-static __rte_always_inline void *
-rte_memcpy(void *dst, const void *src, size_t n)
-{
- if (!(((uintptr_t)dst | (uintptr_t)src) & ALIGNMENT_MASK))
- return rte_memcpy_aligned(dst, src, n);
- else
- return rte_memcpy_generic(dst, src, n);
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _RTE_MEMCPY_X86_64_H_ */