+++ /dev/null
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/*-
- * 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 included_clib_memcpy_avx512_h
-#define included_clib_memcpy_avx512_h
-
-#include <stdint.h>
-#include <x86intrin.h>
-#include <vppinfra/warnings.h>
-
-/* *INDENT-OFF* */
-WARN_OFF (stringop-overflow)
-/* *INDENT-ON* */
-
-static inline void
-clib_mov16 (u8 * dst, const u8 * src)
-{
- __m128i xmm0;
-
- xmm0 = _mm_loadu_si128 ((const __m128i *) src);
- _mm_storeu_si128 ((__m128i *) dst, xmm0);
-}
-
-static inline void
-clib_mov32 (u8 * dst, const u8 * src)
-{
- __m256i ymm0;
-
- ymm0 = _mm256_loadu_si256 ((const __m256i *) src);
- _mm256_storeu_si256 ((__m256i *) dst, ymm0);
-}
-
-static inline void
-clib_mov64 (u8 * dst, const u8 * src)
-{
- __m512i zmm0;
-
- zmm0 = _mm512_loadu_si512 ((const void *) src);
- _mm512_storeu_si512 ((void *) dst, zmm0);
-}
-
-static inline void
-clib_mov128 (u8 * dst, const u8 * src)
-{
- clib_mov64 (dst + 0 * 64, src + 0 * 64);
- clib_mov64 (dst + 1 * 64, src + 1 * 64);
-}
-
-static inline void
-clib_mov256 (u8 * dst, const u8 * src)
-{
- clib_mov128 (dst + 0 * 128, src + 0 * 128);
- clib_mov128 (dst + 1 * 128, src + 1 * 128);
-}
-
-static inline void
-clib_mov128blocks (u8 * dst, const u8 * 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;
- }
-}
-
-static inline void
-clib_mov512blocks (u8 * dst, const u8 * 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 *
-clib_memcpy_fast_avx512 (void *dst, const void *src, size_t n)
-{
- uword dstu = (uword) dst;
- uword srcu = (uword) src;
- void *ret = dst;
- size_t dstofss;
- size_t bits;
-
- /**
- * Copy less than 16 bytes
- */
- if (n < 16)
- {
- if (n & 0x01)
- {
- *(u8 *) dstu = *(const u8 *) srcu;
- srcu = (uword) ((const u8 *) srcu + 1);
- dstu = (uword) ((u8 *) dstu + 1);
- }
- if (n & 0x02)
- {
- *(u16u *) dstu = *(const u16u *) srcu;
- srcu = (uword) ((const u16u *) srcu + 1);
- dstu = (uword) ((u16u *) dstu + 1);
- }
- if (n & 0x04)
- {
- *(u32u *) dstu = *(const u32u *) srcu;
- srcu = (uword) ((const u32u *) srcu + 1);
- dstu = (uword) ((u32u *) dstu + 1);
- }
- if (n & 0x08)
- *(u64u *) dstu = *(const u64u *) srcu;
- return ret;
- }
-
- /**
- * Fast way when copy size doesn't exceed 512 bytes
- */
- if (n <= 32)
- {
- clib_mov16 ((u8 *) dst, (const u8 *) src);
- clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n);
- return ret;
- }
- if (n <= 64)
- {
- clib_mov32 ((u8 *) dst, (const u8 *) src);
- clib_mov32 ((u8 *) dst - 32 + n, (const u8 *) src - 32 + n);
- return ret;
- }
- if (n <= 512)
- {
- if (n >= 256)
- {
- n -= 256;
- clib_mov256 ((u8 *) dst, (const u8 *) src);
- src = (const u8 *) src + 256;
- dst = (u8 *) dst + 256;
- }
- if (n >= 128)
- {
- n -= 128;
- clib_mov128 ((u8 *) dst, (const u8 *) src);
- src = (const u8 *) src + 128;
- dst = (u8 *) dst + 128;
- }
- COPY_BLOCK_128_BACK63:
- if (n > 64)
- {
- clib_mov64 ((u8 *) dst, (const u8 *) src);
- clib_mov64 ((u8 *) dst - 64 + n, (const u8 *) src - 64 + n);
- return ret;
- }
- if (n > 0)
- clib_mov64 ((u8 *) dst - 64 + n, (const u8 *) src - 64 + n);
- return ret;
- }
-
- /**
- * Make store aligned when copy size exceeds 512 bytes
- */
- dstofss = (uword) dst & 0x3F;
- if (dstofss > 0)
- {
- dstofss = 64 - dstofss;
- n -= dstofss;
- clib_mov64 ((u8 *) dst, (const u8 *) src);
- src = (const u8 *) src + dstofss;
- dst = (u8 *) dst + dstofss;
- }
-
- /**
- * Copy 512-byte blocks.
- * Use copy block function for better instruction order control,
- * which is important when load is unaligned.
- */
- clib_mov512blocks ((u8 *) dst, (const u8 *) src, n);
- bits = n;
- n = n & 511;
- bits -= n;
- src = (const u8 *) src + bits;
- dst = (u8 *) 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)
- {
- clib_mov128blocks ((u8 *) dst, (const u8 *) src, n);
- bits = n;
- n = n & 127;
- bits -= n;
- src = (const u8 *) src + bits;
- dst = (u8 *) dst + bits;
- }
-
- /**
- * Copy whatever left
- */
- goto COPY_BLOCK_128_BACK63;
-}
-
-/* *INDENT-OFF* */
-WARN_ON (stringop-overflow)
-/* *INDENT-ON* */
-
-#endif /* included_clib_memcpy_avx512_h */
-
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff