+++ /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_sse3_h
-#define included_clib_memcpy_sse3_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)
-{
- clib_mov16 ((u8 *) dst + 0 * 16, (const u8 *) src + 0 * 16);
- clib_mov16 ((u8 *) dst + 1 * 16, (const u8 *) src + 1 * 16);
-}
-
-static inline void
-clib_mov64 (u8 * dst, const u8 * src)
-{
- clib_mov32 ((u8 *) dst + 0 * 32, (const u8 *) src + 0 * 32);
- clib_mov32 ((u8 *) dst + 1 * 32, (const u8 *) src + 1 * 32);
-}
-
-static inline void
-clib_mov128 (u8 * dst, const u8 * src)
-{
- clib_mov64 ((u8 *) dst + 0 * 64, (const u8 *) src + 0 * 64);
- clib_mov64 ((u8 *) dst + 1 * 64, (const u8 *) src + 1 * 64);
-}
-
-static inline void
-clib_mov256 (u8 * dst, const u8 * src)
-{
- clib_mov128 ((u8 *) dst + 0 * 128, (const u8 *) src + 0 * 128);
- clib_mov128 ((u8 *) dst + 1 * 128, (const u8 *) src + 1 * 128);
-}
-
-/**
- * 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 CLIB_MVUNALIGN_LEFT47_IMM(dst, src, len, offset) \
-({ \
- int tmp; \
- while (len >= 128 + 16 - offset) { \
- xmm0 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 0 * 16)); \
- len -= 128; \
- xmm1 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 1 * 16)); \
- xmm2 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 2 * 16)); \
- xmm3 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 3 * 16)); \
- xmm4 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 4 * 16)); \
- xmm5 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 5 * 16)); \
- xmm6 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 6 * 16)); \
- xmm7 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 7 * 16)); \
- xmm8 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 8 * 16)); \
- src = (const u8 *)src + 128; \
- _mm_storeu_si128((__m128i *)((u8 *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset)); \
- _mm_storeu_si128((__m128i *)((u8 *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset)); \
- _mm_storeu_si128((__m128i *)((u8 *)dst + 2 * 16), _mm_alignr_epi8(xmm3, xmm2, offset)); \
- _mm_storeu_si128((__m128i *)((u8 *)dst + 3 * 16), _mm_alignr_epi8(xmm4, xmm3, offset)); \
- _mm_storeu_si128((__m128i *)((u8 *)dst + 4 * 16), _mm_alignr_epi8(xmm5, xmm4, offset)); \
- _mm_storeu_si128((__m128i *)((u8 *)dst + 5 * 16), _mm_alignr_epi8(xmm6, xmm5, offset)); \
- _mm_storeu_si128((__m128i *)((u8 *)dst + 6 * 16), _mm_alignr_epi8(xmm7, xmm6, offset)); \
- _mm_storeu_si128((__m128i *)((u8 *)dst + 7 * 16), _mm_alignr_epi8(xmm8, xmm7, offset)); \
- dst = (u8 *)dst + 128; \
- } \
- tmp = len; \
- len = ((len - 16 + offset) & 127) + 16 - offset; \
- tmp -= len; \
- src = (const u8 *)src + tmp; \
- dst = (u8 *)dst + tmp; \
- if (len >= 32 + 16 - offset) { \
- while (len >= 32 + 16 - offset) { \
- xmm0 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 0 * 16)); \
- len -= 32; \
- xmm1 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 1 * 16)); \
- xmm2 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 2 * 16)); \
- src = (const u8 *)src + 32; \
- _mm_storeu_si128((__m128i *)((u8 *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset)); \
- _mm_storeu_si128((__m128i *)((u8 *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset)); \
- dst = (u8 *)dst + 32; \
- } \
- tmp = len; \
- len = ((len - 16 + offset) & 31) + 16 - offset; \
- tmp -= len; \
- src = (const u8 *)src + tmp; \
- dst = (u8 *)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 CLIB_MVUNALIGN_LEFT47_IMM must be pre-defined
- */
-#define CLIB_MVUNALIGN_LEFT47(dst, src, len, offset) \
-({ \
- switch (offset) { \
- case 0x01: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x01); break; \
- case 0x02: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x02); break; \
- case 0x03: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x03); break; \
- case 0x04: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x04); break; \
- case 0x05: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x05); break; \
- case 0x06: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x06); break; \
- case 0x07: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x07); break; \
- case 0x08: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x08); break; \
- case 0x09: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x09); break; \
- case 0x0A: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0A); break; \
- case 0x0B: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0B); break; \
- case 0x0C: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0C); break; \
- case 0x0D: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0D); break; \
- case 0x0E: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0E); break; \
- case 0x0F: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0F); break; \
- default:; \
- } \
-})
-
-static inline void *
-clib_memcpy_fast_sse3 (void *dst, const void *src, size_t n)
-{
- __m128i xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8;
- uword dstu = (uword) dst;
- uword srcu = (uword) src;
- void *ret = dst;
- size_t dstofss;
- size_t srcofs;
-
- /**
- * 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 <= 48)
- {
- clib_mov32 ((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_mov16 ((u8 *) dst + 32, (const u8 *) src + 32);
- clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n);
- return ret;
- }
- if (n <= 128)
- {
- goto COPY_BLOCK_128_BACK15;
- }
- if (n <= 512)
- {
- if (n >= 256)
- {
- n -= 256;
- clib_mov128 ((u8 *) dst, (const u8 *) src);
- clib_mov128 ((u8 *) dst + 128, (const u8 *) src + 128);
- src = (const u8 *) src + 256;
- dst = (u8 *) dst + 256;
- }
- COPY_BLOCK_255_BACK15:
- if (n >= 128)
- {
- n -= 128;
- clib_mov128 ((u8 *) dst, (const u8 *) src);
- src = (const u8 *) src + 128;
- dst = (u8 *) dst + 128;
- }
- COPY_BLOCK_128_BACK15:
- if (n >= 64)
- {
- n -= 64;
- clib_mov64 ((u8 *) dst, (const u8 *) src);
- src = (const u8 *) src + 64;
- dst = (u8 *) dst + 64;
- }
- COPY_BLOCK_64_BACK15:
- if (n >= 32)
- {
- n -= 32;
- clib_mov32 ((u8 *) dst, (const u8 *) src);
- src = (const u8 *) src + 32;
- dst = (u8 *) dst + 32;
- }
- if (n > 16)
- {
- clib_mov16 ((u8 *) dst, (const u8 *) src);
- clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n);
- return ret;
- }
- if (n > 0)
- {
- clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) 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 = (uword) dst & 0x0F;
- if (dstofss > 0)
- {
- dstofss = 16 - dstofss + 16;
- n -= dstofss;
- clib_mov32 ((u8 *) dst, (const u8 *) src);
- src = (const u8 *) src + dstofss;
- dst = (u8 *) dst + dstofss;
- }
- srcofs = ((uword) src & 0x0F);
-
- /**
- * For aligned copy
- */
- if (srcofs == 0)
- {
- /**
- * Copy 256-byte blocks
- */
- for (; n >= 256; n -= 256)
- {
- clib_mov256 ((u8 *) dst, (const u8 *) src);
- dst = (u8 *) dst + 256;
- src = (const u8 *) src + 256;
- }
-
- /**
- * Copy whatever left
- */
- goto COPY_BLOCK_255_BACK15;
- }
-
- /**
- * For copy with unaligned load
- */
- CLIB_MVUNALIGN_LEFT47 (dst, src, n, srcofs);
-
- /**
- * Copy whatever left
- */
- goto COPY_BLOCK_64_BACK15;
-}
-
-/* *INDENT-OFF* */
-WARN_ON (stringop-overflow)
-/* *INDENT-ON* */
-
-#undef CLIB_MVUNALIGN_LEFT47_IMM
-#undef CLIB_MVUNALIGN_LEFT47
-
-#endif /* included_clib_memcpy_sse3_h */
-
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff