diff options
Diffstat (limited to 'src/vppinfra/memcpy_sse3.h')
| -rw-r--r-- | src/vppinfra/memcpy_sse3.h | 368 |
1 files changed, 0 insertions, 368 deletions
diff --git a/src/vppinfra/memcpy_sse3.h b/src/vppinfra/memcpy_sse3.h deleted file mode 100644 index 2ad3648a52a..00000000000 --- a/src/vppinfra/memcpy_sse3.h +++ /dev/null @@ -1,368 +0,0 @@ -/* - * 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: - */ |