@@ -36,6 +36,7 @@ LIB = librte_eal.a
ARCH_DIR ?= $(RTE_ARCH)
VPATH += $(RTE_SDK)/lib/librte_eal/common
VPATH += $(RTE_SDK)/lib/librte_eal/common/arch/$(ARCH_DIR)
+VPATH += $(RTE_SDK)/lib/librte_eal/common/include/arch/$(ARCH_DIR)
CFLAGS += -I$(SRCDIR)/include
CFLAGS += -I$(RTE_SDK)/lib/librte_eal/common
@@ -93,6 +94,24 @@ SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += rte_service.c
SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += rte_cpuflags.c
SRCS-$(CONFIG_RTE_ARCH_X86) += rte_spinlock.c
+# for run-time dispatch of memcpy
+SRCS-$(CONFIG_RTE_ARCH_X86) += rte_memcpy.c
+SRCS-$(CONFIG_RTE_ARCH_X86) += rte_memcpy_sse.c
+
+# if the compiler supports AVX512, add avx512 file
+ifneq ($(findstring CC_SUPPORT_AVX512F,$(MACHINE_CFLAGS)),)
+SRCS-$(CONFIG_RTE_ARCH_X86) += rte_memcpy_avx512f.c
+CFLAGS_rte_memcpy_avx512f.o += -mavx512f
+CFLAGS_rte_memcpy_avx512f.o += -DRTE_MACHINE_CPUFLAG_AVX512F
+endif
+
+# if the compiler supports AVX2, add avx2 file
+ifneq ($(findstring CC_SUPPORT_AVX2,$(MACHINE_CFLAGS)),)
+SRCS-$(CONFIG_RTE_ARCH_X86) += rte_memcpy_avx2.c
+CFLAGS_rte_memcpy_avx2.o += -mavx2
+CFLAGS_rte_memcpy_avx2.o += -DRTE_MACHINE_CPUFLAG_AVX2
+endif
+
CFLAGS_eal_common_cpuflags.o := $(CPUFLAGS_LIST)
CFLAGS_eal.o := -D_GNU_SOURCE
@@ -238,3 +238,10 @@ EXPERIMENTAL {
rte_service_start_with_defaults;
} DPDK_17.08;
+
+DPDK_17.11 {
+ global:
+
+ rte_memcpy_ptr;
+
+} DPDK_17.08;
new file mode 100644
@@ -0,0 +1,59 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2017 Intel Corporation. All rights reserved.
+ * 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.
+ */
+
+#include <rte_memcpy.h>
+#include <rte_cpuflags.h>
+#include <rte_log.h>
+
+void *(*rte_memcpy_ptr)(void *dst, const void *src, size_t n) = NULL;
+
+static void __attribute__((constructor))
+rte_memcpy_init(void)
+{
+#ifdef CC_SUPPORT_AVX512F
+ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F)) {
+ rte_memcpy_ptr = rte_memcpy_avx512f;
+ RTE_LOG(DEBUG, EAL, "AVX512 memcpy is using!\n");
+ return;
+ }
+#endif
+#ifdef CC_SUPPORT_AVX2
+ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2)) {
+ rte_memcpy_ptr = rte_memcpy_avx2;
+ RTE_LOG(DEBUG, EAL, "AVX2 memcpy is using!\n");
+ return;
+ }
+#endif
+ rte_memcpy_ptr = rte_memcpy_sse;
+ RTE_LOG(DEBUG, EAL, "Default SSE/AVX memcpy is using!\n");
+}
@@ -1,7 +1,7 @@
/*-
* BSD LICENSE
*
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * Copyright(c) 2010-2017 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -34,867 +34,36 @@
#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_memcpy_internal.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 RTE_X86_MEMCPY_THRESH 128
-#define ALIGNMENT_MASK 0x3F
+extern void *
+(*rte_memcpy_ptr)(void *dst, const void *src, size_t n);
/**
- * AVX512 implementation below
+ * Different implementations of memcpy.
*/
+extern void*
+rte_memcpy_avx512f(void *dst, const void *src, size_t n);
-/**
- * Copy 16 bytes from one location to another,
- * locations should not overlap.
- */
-static 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 inline void
-rte_mov32(uint8_t *dst, const uint8_t *src)
-{
- __m256i ymm0;
+extern void *
+rte_memcpy_avx2(void *dst, const void *src, size_t n);
- 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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__ ({ \
- int 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 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 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;
-}
+extern void *
+rte_memcpy_sse(void *dst, const void *src, size_t n);
static 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);
+ if (n <= RTE_X86_MEMCPY_THRESH)
+ return rte_memcpy_internal(dst, src, n);
else
- return rte_memcpy_generic(dst, src, n);
+ return (*rte_memcpy_ptr)(dst, src, n);
}
#ifdef __cplusplus
new file mode 100644
@@ -0,0 +1,44 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2017 Intel Corporation. All rights reserved.
+ * 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.
+ */
+
+#include <rte_memcpy.h>
+
+#ifndef RTE_MACHINE_CPUFLAG_AVX2
+#error RTE_MACHINE_CPUFLAG_AVX2 not defined
+#endif
+
+void *
+rte_memcpy_avx2(void *dst, const void *src, size_t n)
+{
+ return rte_memcpy_internal(dst, src, n);
+}
new file mode 100644
@@ -0,0 +1,44 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2017 Intel Corporation. All rights reserved.
+ * 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.
+ */
+
+#include <rte_memcpy.h>
+
+#ifndef RTE_MACHINE_CPUFLAG_AVX512F
+#error RTE_MACHINE_CPUFLAG_AVX512F not defined
+#endif
+
+void *
+rte_memcpy_avx512f(void *dst, const void *src, size_t n)
+{
+ return rte_memcpy_internal(dst, src, n);
+}
new file mode 100644
@@ -0,0 +1,909 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * 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.
+ */
+
+#ifndef _RTE_MEMCPY_INTERNAL_X86_64_H_
+#define _RTE_MEMCPY_INTERNAL_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>
+
+#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.
+ */
+
+#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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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__ ({ \
+ int 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 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 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 inline void *
+rte_memcpy_internal(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_INTERNAL_X86_64_H_ */
new file mode 100644
@@ -0,0 +1,40 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2017 Intel Corporation. All rights reserved.
+ * 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.
+ */
+
+#include <rte_memcpy.h>
+
+void *
+rte_memcpy_sse(void *dst, const void *src, size_t n)
+{
+ return rte_memcpy_internal(dst, src, n);
+}
@@ -40,6 +40,7 @@ VPATH += $(RTE_SDK)/lib/librte_eal/common/arch/$(ARCH_DIR)
LIBABIVER := 5
VPATH += $(RTE_SDK)/lib/librte_eal/common
+VPATH += $(RTE_SDK)/lib/librte_eal/common/include/arch/$(ARCH_DIR)
CFLAGS += -I$(SRCDIR)/include
CFLAGS += -I$(RTE_SDK)/lib/librte_eal/common
@@ -105,6 +106,24 @@ SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += rte_service.c
SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += rte_cpuflags.c
SRCS-$(CONFIG_RTE_ARCH_X86) += rte_spinlock.c
+# for run-time dispatch of memcpy
+SRCS-$(CONFIG_RTE_ARCH_X86) += rte_memcpy.c
+SRCS-$(CONFIG_RTE_ARCH_X86) += rte_memcpy_sse.c
+
+# if the compiler supports AVX512, add avx512 file
+ifneq ($(findstring CC_SUPPORT_AVX512F,$(MACHINE_CFLAGS)),)
+SRCS-$(CONFIG_RTE_ARCH_X86) += rte_memcpy_avx512f.c
+CFLAGS_rte_memcpy_avx512f.o += -mavx512f
+CFLAGS_rte_memcpy_avx512f.o += -DRTE_MACHINE_CPUFLAG_AVX512F
+endif
+
+# if the compiler supports AVX2, add avx2 file
+ifneq ($(findstring CC_SUPPORT_AVX2,$(MACHINE_CFLAGS)),)
+SRCS-$(CONFIG_RTE_ARCH_X86) += rte_memcpy_avx2.c
+CFLAGS_rte_memcpy_avx2.o += -mavx2
+CFLAGS_rte_memcpy_avx2.o += -DRTE_MACHINE_CPUFLAG_AVX2
+endif
+
CFLAGS_eal_common_cpuflags.o := $(CPUFLAGS_LIST)
CFLAGS_eal.o := -D_GNU_SOURCE
@@ -243,3 +243,10 @@ EXPERIMENTAL {
rte_service_start_with_defaults;
} DPDK_17.08;
+
+DPDK_17.11 {
+ global:
+
+ rte_memcpy_ptr;
+
+} DPDK_17.08;
@@ -134,6 +134,20 @@ endif
MACHINE_CFLAGS += $(addprefix -DRTE_MACHINE_CPUFLAG_,$(CPUFLAGS))
+# Check if the compiler suppoerts AVX512
+CC_SUPPORT_AVX512F := $(shell $(CC) -mavx512f -dM -E - < /dev/null 2>&1 | grep -q AVX512 && echo 1)
+ifeq ($(CC_SUPPORT_AVX512F),1)
+ifeq ($(CONFIG_RTE_ENABLE_AVX512),y)
+MACHINE_CFLAGS += -DCC_SUPPORT_AVX512F
+endif
+endif
+
+# Check if the compiler supports AVX2
+CC_SUPPORT_AVX2 := $(shell $(CC) -mavx2 -dM -E - < /dev/null 2>&1 | grep -q AVX2 && echo 1)
+ifeq ($(CC_SUPPORT_AVX2),1)
+MACHINE_CFLAGS += -DCC_SUPPORT_AVX2
+endif
+
# To strip whitespace
comma:= ,
empty:=