--- /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>
+
+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 (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)
+ {
+ *(u16 *) dstu = *(const u16 *) srcu;
+ srcu = (uword) ((const u16 *) srcu + 1);
+ dstu = (uword) ((u16 *) dstu + 1);
+ }
+ if (n & 0x04)
+ {
+ *(u32 *) dstu = *(const u32 *) srcu;
+ srcu = (uword) ((const u32 *) srcu + 1);
+ dstu = (uword) ((u32 *) dstu + 1);
+ }
+ if (n & 0x08)
+ *(u64 *) dstu = *(const u64 *) 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;
+}
+
+
+#endif /* included_clib_mamcpy_avx512_h */
+
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff