4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of Intel Corporation nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 #ifndef _RTE_MEMCPY_X86_64_H_
35 #define _RTE_MEMCPY_X86_64_H_
40 * Functions for SSE/AVX/AVX2/AVX512 implementation of memcpy().
53 * Copy bytes from one location to another. The locations must not overlap.
55 * @note This is implemented as a macro, so it's address should not be taken
56 * and care is needed as parameter expressions may be evaluated multiple times.
59 * Pointer to the destination of the data.
61 * Pointer to the source data.
63 * Number of bytes to copy.
65 * Pointer to the destination data.
68 rte_memcpy(void *dst, const void *src, size_t n) __attribute__((always_inline));
70 #ifdef RTE_MACHINE_CPUFLAG_AVX512F
73 * AVX512 implementation below
77 * Copy 16 bytes from one location to another,
78 * locations should not overlap.
81 rte_mov16(uint8_t *dst, const uint8_t *src)
85 xmm0 = _mm_loadu_si128((const __m128i *)src);
86 _mm_storeu_si128((__m128i *)dst, xmm0);
90 * Copy 32 bytes from one location to another,
91 * locations should not overlap.
94 rte_mov32(uint8_t *dst, const uint8_t *src)
98 ymm0 = _mm256_loadu_si256((const __m256i *)src);
99 _mm256_storeu_si256((__m256i *)dst, ymm0);
103 * Copy 64 bytes from one location to another,
104 * locations should not overlap.
107 rte_mov64(uint8_t *dst, const uint8_t *src)
111 zmm0 = _mm512_loadu_si512((const void *)src);
112 _mm512_storeu_si512((void *)dst, zmm0);
116 * Copy 128 bytes from one location to another,
117 * locations should not overlap.
120 rte_mov128(uint8_t *dst, const uint8_t *src)
122 rte_mov64(dst + 0 * 64, src + 0 * 64);
123 rte_mov64(dst + 1 * 64, src + 1 * 64);
127 * Copy 256 bytes from one location to another,
128 * locations should not overlap.
131 rte_mov256(uint8_t *dst, const uint8_t *src)
133 rte_mov64(dst + 0 * 64, src + 0 * 64);
134 rte_mov64(dst + 1 * 64, src + 1 * 64);
135 rte_mov64(dst + 2 * 64, src + 2 * 64);
136 rte_mov64(dst + 3 * 64, src + 3 * 64);
140 * Copy 128-byte blocks from one location to another,
141 * locations should not overlap.
144 rte_mov128blocks(uint8_t *dst, const uint8_t *src, size_t n)
149 zmm0 = _mm512_loadu_si512((const void *)(src + 0 * 64));
151 zmm1 = _mm512_loadu_si512((const void *)(src + 1 * 64));
153 _mm512_storeu_si512((void *)(dst + 0 * 64), zmm0);
154 _mm512_storeu_si512((void *)(dst + 1 * 64), zmm1);
160 * Copy 512-byte blocks from one location to another,
161 * locations should not overlap.
164 rte_mov512blocks(uint8_t *dst, const uint8_t *src, size_t n)
166 __m512i zmm0, zmm1, zmm2, zmm3, zmm4, zmm5, zmm6, zmm7;
169 zmm0 = _mm512_loadu_si512((const void *)(src + 0 * 64));
171 zmm1 = _mm512_loadu_si512((const void *)(src + 1 * 64));
172 zmm2 = _mm512_loadu_si512((const void *)(src + 2 * 64));
173 zmm3 = _mm512_loadu_si512((const void *)(src + 3 * 64));
174 zmm4 = _mm512_loadu_si512((const void *)(src + 4 * 64));
175 zmm5 = _mm512_loadu_si512((const void *)(src + 5 * 64));
176 zmm6 = _mm512_loadu_si512((const void *)(src + 6 * 64));
177 zmm7 = _mm512_loadu_si512((const void *)(src + 7 * 64));
179 _mm512_storeu_si512((void *)(dst + 0 * 64), zmm0);
180 _mm512_storeu_si512((void *)(dst + 1 * 64), zmm1);
181 _mm512_storeu_si512((void *)(dst + 2 * 64), zmm2);
182 _mm512_storeu_si512((void *)(dst + 3 * 64), zmm3);
183 _mm512_storeu_si512((void *)(dst + 4 * 64), zmm4);
184 _mm512_storeu_si512((void *)(dst + 5 * 64), zmm5);
185 _mm512_storeu_si512((void *)(dst + 6 * 64), zmm6);
186 _mm512_storeu_si512((void *)(dst + 7 * 64), zmm7);
192 rte_memcpy(void *dst, const void *src, size_t n)
194 uintptr_t dstu = (uintptr_t)dst;
195 uintptr_t srcu = (uintptr_t)src;
201 * Copy less than 16 bytes
205 *(uint8_t *)dstu = *(const uint8_t *)srcu;
206 srcu = (uintptr_t)((const uint8_t *)srcu + 1);
207 dstu = (uintptr_t)((uint8_t *)dstu + 1);
210 *(uint16_t *)dstu = *(const uint16_t *)srcu;
211 srcu = (uintptr_t)((const uint16_t *)srcu + 1);
212 dstu = (uintptr_t)((uint16_t *)dstu + 1);
215 *(uint32_t *)dstu = *(const uint32_t *)srcu;
216 srcu = (uintptr_t)((const uint32_t *)srcu + 1);
217 dstu = (uintptr_t)((uint32_t *)dstu + 1);
220 *(uint64_t *)dstu = *(const uint64_t *)srcu;
225 * Fast way when copy size doesn't exceed 512 bytes
228 rte_mov16((uint8_t *)dst, (const uint8_t *)src);
229 rte_mov16((uint8_t *)dst - 16 + n,
230 (const uint8_t *)src - 16 + n);
234 rte_mov32((uint8_t *)dst, (const uint8_t *)src);
235 rte_mov32((uint8_t *)dst - 32 + n,
236 (const uint8_t *)src - 32 + n);
242 rte_mov256((uint8_t *)dst, (const uint8_t *)src);
243 src = (const uint8_t *)src + 256;
244 dst = (uint8_t *)dst + 256;
248 rte_mov128((uint8_t *)dst, (const uint8_t *)src);
249 src = (const uint8_t *)src + 128;
250 dst = (uint8_t *)dst + 128;
252 COPY_BLOCK_128_BACK63:
254 rte_mov64((uint8_t *)dst, (const uint8_t *)src);
255 rte_mov64((uint8_t *)dst - 64 + n,
256 (const uint8_t *)src - 64 + n);
260 rte_mov64((uint8_t *)dst - 64 + n,
261 (const uint8_t *)src - 64 + n);
266 * Make store aligned when copy size exceeds 512 bytes
268 dstofss = ((uintptr_t)dst & 0x3F);
270 dstofss = 64 - dstofss;
272 rte_mov64((uint8_t *)dst, (const uint8_t *)src);
273 src = (const uint8_t *)src + dstofss;
274 dst = (uint8_t *)dst + dstofss;
278 * Copy 512-byte blocks.
279 * Use copy block function for better instruction order control,
280 * which is important when load is unaligned.
282 rte_mov512blocks((uint8_t *)dst, (const uint8_t *)src, n);
286 src = (const uint8_t *)src + bits;
287 dst = (uint8_t *)dst + bits;
290 * Copy 128-byte blocks.
291 * Use copy block function for better instruction order control,
292 * which is important when load is unaligned.
295 rte_mov128blocks((uint8_t *)dst, (const uint8_t *)src, n);
299 src = (const uint8_t *)src + bits;
300 dst = (uint8_t *)dst + bits;
306 goto COPY_BLOCK_128_BACK63;
309 #elif defined RTE_MACHINE_CPUFLAG_AVX2
312 * AVX2 implementation below
316 * Copy 16 bytes from one location to another,
317 * locations should not overlap.
320 rte_mov16(uint8_t *dst, const uint8_t *src)
324 xmm0 = _mm_loadu_si128((const __m128i *)src);
325 _mm_storeu_si128((__m128i *)dst, xmm0);
329 * Copy 32 bytes from one location to another,
330 * locations should not overlap.
333 rte_mov32(uint8_t *dst, const uint8_t *src)
337 ymm0 = _mm256_loadu_si256((const __m256i *)src);
338 _mm256_storeu_si256((__m256i *)dst, ymm0);
342 * Copy 64 bytes from one location to another,
343 * locations should not overlap.
346 rte_mov64(uint8_t *dst, const uint8_t *src)
348 rte_mov32((uint8_t *)dst + 0 * 32, (const uint8_t *)src + 0 * 32);
349 rte_mov32((uint8_t *)dst + 1 * 32, (const uint8_t *)src + 1 * 32);
353 * Copy 128 bytes from one location to another,
354 * locations should not overlap.
357 rte_mov128(uint8_t *dst, const uint8_t *src)
359 rte_mov32((uint8_t *)dst + 0 * 32, (const uint8_t *)src + 0 * 32);
360 rte_mov32((uint8_t *)dst + 1 * 32, (const uint8_t *)src + 1 * 32);
361 rte_mov32((uint8_t *)dst + 2 * 32, (const uint8_t *)src + 2 * 32);
362 rte_mov32((uint8_t *)dst + 3 * 32, (const uint8_t *)src + 3 * 32);
366 * Copy 128-byte blocks from one location to another,
367 * locations should not overlap.
370 rte_mov128blocks(uint8_t *dst, const uint8_t *src, size_t n)
372 __m256i ymm0, ymm1, ymm2, ymm3;
375 ymm0 = _mm256_loadu_si256((const __m256i *)((const uint8_t *)src + 0 * 32));
377 ymm1 = _mm256_loadu_si256((const __m256i *)((const uint8_t *)src + 1 * 32));
378 ymm2 = _mm256_loadu_si256((const __m256i *)((const uint8_t *)src + 2 * 32));
379 ymm3 = _mm256_loadu_si256((const __m256i *)((const uint8_t *)src + 3 * 32));
380 src = (const uint8_t *)src + 128;
381 _mm256_storeu_si256((__m256i *)((uint8_t *)dst + 0 * 32), ymm0);
382 _mm256_storeu_si256((__m256i *)((uint8_t *)dst + 1 * 32), ymm1);
383 _mm256_storeu_si256((__m256i *)((uint8_t *)dst + 2 * 32), ymm2);
384 _mm256_storeu_si256((__m256i *)((uint8_t *)dst + 3 * 32), ymm3);
385 dst = (uint8_t *)dst + 128;
390 rte_memcpy(void *dst, const void *src, size_t n)
392 uintptr_t dstu = (uintptr_t)dst;
393 uintptr_t srcu = (uintptr_t)src;
399 * Copy less than 16 bytes
403 *(uint8_t *)dstu = *(const uint8_t *)srcu;
404 srcu = (uintptr_t)((const uint8_t *)srcu + 1);
405 dstu = (uintptr_t)((uint8_t *)dstu + 1);
408 *(uint16_t *)dstu = *(const uint16_t *)srcu;
409 srcu = (uintptr_t)((const uint16_t *)srcu + 1);
410 dstu = (uintptr_t)((uint16_t *)dstu + 1);
413 *(uint32_t *)dstu = *(const uint32_t *)srcu;
414 srcu = (uintptr_t)((const uint32_t *)srcu + 1);
415 dstu = (uintptr_t)((uint32_t *)dstu + 1);
418 *(uint64_t *)dstu = *(const uint64_t *)srcu;
424 * Fast way when copy size doesn't exceed 256 bytes
427 rte_mov16((uint8_t *)dst, (const uint8_t *)src);
428 rte_mov16((uint8_t *)dst - 16 + n,
429 (const uint8_t *)src - 16 + n);
433 rte_mov16((uint8_t *)dst, (const uint8_t *)src);
434 rte_mov16((uint8_t *)dst + 16, (const uint8_t *)src + 16);
435 rte_mov16((uint8_t *)dst - 16 + n,
436 (const uint8_t *)src - 16 + n);
440 rte_mov32((uint8_t *)dst, (const uint8_t *)src);
441 rte_mov32((uint8_t *)dst - 32 + n,
442 (const uint8_t *)src - 32 + n);
448 rte_mov128((uint8_t *)dst, (const uint8_t *)src);
449 src = (const uint8_t *)src + 128;
450 dst = (uint8_t *)dst + 128;
452 COPY_BLOCK_128_BACK31:
455 rte_mov64((uint8_t *)dst, (const uint8_t *)src);
456 src = (const uint8_t *)src + 64;
457 dst = (uint8_t *)dst + 64;
460 rte_mov32((uint8_t *)dst, (const uint8_t *)src);
461 rte_mov32((uint8_t *)dst - 32 + n,
462 (const uint8_t *)src - 32 + n);
466 rte_mov32((uint8_t *)dst - 32 + n,
467 (const uint8_t *)src - 32 + n);
473 * Make store aligned when copy size exceeds 256 bytes
475 dstofss = (uintptr_t)dst & 0x1F;
477 dstofss = 32 - dstofss;
479 rte_mov32((uint8_t *)dst, (const uint8_t *)src);
480 src = (const uint8_t *)src + dstofss;
481 dst = (uint8_t *)dst + dstofss;
485 * Copy 128-byte blocks
487 rte_mov128blocks((uint8_t *)dst, (const uint8_t *)src, n);
491 src = (const uint8_t *)src + bits;
492 dst = (uint8_t *)dst + bits;
497 goto COPY_BLOCK_128_BACK31;
500 #else /* RTE_MACHINE_CPUFLAG */
503 * SSE & AVX implementation below
507 * Copy 16 bytes from one location to another,
508 * locations should not overlap.
511 rte_mov16(uint8_t *dst, const uint8_t *src)
515 xmm0 = _mm_loadu_si128((const __m128i *)(const __m128i *)src);
516 _mm_storeu_si128((__m128i *)dst, xmm0);
520 * Copy 32 bytes from one location to another,
521 * locations should not overlap.
524 rte_mov32(uint8_t *dst, const uint8_t *src)
526 rte_mov16((uint8_t *)dst + 0 * 16, (const uint8_t *)src + 0 * 16);
527 rte_mov16((uint8_t *)dst + 1 * 16, (const uint8_t *)src + 1 * 16);
531 * Copy 64 bytes from one location to another,
532 * locations should not overlap.
535 rte_mov64(uint8_t *dst, const uint8_t *src)
537 rte_mov16((uint8_t *)dst + 0 * 16, (const uint8_t *)src + 0 * 16);
538 rte_mov16((uint8_t *)dst + 1 * 16, (const uint8_t *)src + 1 * 16);
539 rte_mov16((uint8_t *)dst + 2 * 16, (const uint8_t *)src + 2 * 16);
540 rte_mov16((uint8_t *)dst + 3 * 16, (const uint8_t *)src + 3 * 16);
544 * Copy 128 bytes from one location to another,
545 * locations should not overlap.
548 rte_mov128(uint8_t *dst, const uint8_t *src)
550 rte_mov16((uint8_t *)dst + 0 * 16, (const uint8_t *)src + 0 * 16);
551 rte_mov16((uint8_t *)dst + 1 * 16, (const uint8_t *)src + 1 * 16);
552 rte_mov16((uint8_t *)dst + 2 * 16, (const uint8_t *)src + 2 * 16);
553 rte_mov16((uint8_t *)dst + 3 * 16, (const uint8_t *)src + 3 * 16);
554 rte_mov16((uint8_t *)dst + 4 * 16, (const uint8_t *)src + 4 * 16);
555 rte_mov16((uint8_t *)dst + 5 * 16, (const uint8_t *)src + 5 * 16);
556 rte_mov16((uint8_t *)dst + 6 * 16, (const uint8_t *)src + 6 * 16);
557 rte_mov16((uint8_t *)dst + 7 * 16, (const uint8_t *)src + 7 * 16);
561 * Copy 256 bytes from one location to another,
562 * locations should not overlap.
565 rte_mov256(uint8_t *dst, const uint8_t *src)
567 rte_mov16((uint8_t *)dst + 0 * 16, (const uint8_t *)src + 0 * 16);
568 rte_mov16((uint8_t *)dst + 1 * 16, (const uint8_t *)src + 1 * 16);
569 rte_mov16((uint8_t *)dst + 2 * 16, (const uint8_t *)src + 2 * 16);
570 rte_mov16((uint8_t *)dst + 3 * 16, (const uint8_t *)src + 3 * 16);
571 rte_mov16((uint8_t *)dst + 4 * 16, (const uint8_t *)src + 4 * 16);
572 rte_mov16((uint8_t *)dst + 5 * 16, (const uint8_t *)src + 5 * 16);
573 rte_mov16((uint8_t *)dst + 6 * 16, (const uint8_t *)src + 6 * 16);
574 rte_mov16((uint8_t *)dst + 7 * 16, (const uint8_t *)src + 7 * 16);
575 rte_mov16((uint8_t *)dst + 8 * 16, (const uint8_t *)src + 8 * 16);
576 rte_mov16((uint8_t *)dst + 9 * 16, (const uint8_t *)src + 9 * 16);
577 rte_mov16((uint8_t *)dst + 10 * 16, (const uint8_t *)src + 10 * 16);
578 rte_mov16((uint8_t *)dst + 11 * 16, (const uint8_t *)src + 11 * 16);
579 rte_mov16((uint8_t *)dst + 12 * 16, (const uint8_t *)src + 12 * 16);
580 rte_mov16((uint8_t *)dst + 13 * 16, (const uint8_t *)src + 13 * 16);
581 rte_mov16((uint8_t *)dst + 14 * 16, (const uint8_t *)src + 14 * 16);
582 rte_mov16((uint8_t *)dst + 15 * 16, (const uint8_t *)src + 15 * 16);
586 * Macro for copying unaligned block from one location to another with constant load offset,
587 * 47 bytes leftover maximum,
588 * locations should not overlap.
591 * - Load offset is <offset>, which must be immediate value within [1, 15]
592 * - For <src>, make sure <offset> bit backwards & <16 - offset> bit forwards are available for loading
593 * - <dst>, <src>, <len> must be variables
594 * - __m128i <xmm0> ~ <xmm8> must be pre-defined
596 #define MOVEUNALIGNED_LEFT47_IMM(dst, src, len, offset) \
599 while (len >= 128 + 16 - offset) { \
600 xmm0 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 0 * 16)); \
602 xmm1 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 1 * 16)); \
603 xmm2 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 2 * 16)); \
604 xmm3 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 3 * 16)); \
605 xmm4 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 4 * 16)); \
606 xmm5 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 5 * 16)); \
607 xmm6 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 6 * 16)); \
608 xmm7 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 7 * 16)); \
609 xmm8 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 8 * 16)); \
610 src = (const uint8_t *)src + 128; \
611 _mm_storeu_si128((__m128i *)((uint8_t *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset)); \
612 _mm_storeu_si128((__m128i *)((uint8_t *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset)); \
613 _mm_storeu_si128((__m128i *)((uint8_t *)dst + 2 * 16), _mm_alignr_epi8(xmm3, xmm2, offset)); \
614 _mm_storeu_si128((__m128i *)((uint8_t *)dst + 3 * 16), _mm_alignr_epi8(xmm4, xmm3, offset)); \
615 _mm_storeu_si128((__m128i *)((uint8_t *)dst + 4 * 16), _mm_alignr_epi8(xmm5, xmm4, offset)); \
616 _mm_storeu_si128((__m128i *)((uint8_t *)dst + 5 * 16), _mm_alignr_epi8(xmm6, xmm5, offset)); \
617 _mm_storeu_si128((__m128i *)((uint8_t *)dst + 6 * 16), _mm_alignr_epi8(xmm7, xmm6, offset)); \
618 _mm_storeu_si128((__m128i *)((uint8_t *)dst + 7 * 16), _mm_alignr_epi8(xmm8, xmm7, offset)); \
619 dst = (uint8_t *)dst + 128; \
622 len = ((len - 16 + offset) & 127) + 16 - offset; \
624 src = (const uint8_t *)src + tmp; \
625 dst = (uint8_t *)dst + tmp; \
626 if (len >= 32 + 16 - offset) { \
627 while (len >= 32 + 16 - offset) { \
628 xmm0 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 0 * 16)); \
630 xmm1 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 1 * 16)); \
631 xmm2 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 2 * 16)); \
632 src = (const uint8_t *)src + 32; \
633 _mm_storeu_si128((__m128i *)((uint8_t *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset)); \
634 _mm_storeu_si128((__m128i *)((uint8_t *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset)); \
635 dst = (uint8_t *)dst + 32; \
638 len = ((len - 16 + offset) & 31) + 16 - offset; \
640 src = (const uint8_t *)src + tmp; \
641 dst = (uint8_t *)dst + tmp; \
646 * Macro for copying unaligned block from one location to another,
647 * 47 bytes leftover maximum,
648 * locations should not overlap.
649 * Use switch here because the aligning instruction requires immediate value for shift count.
652 * - Load offset is <offset>, which must be within [1, 15]
653 * - For <src>, make sure <offset> bit backwards & <16 - offset> bit forwards are available for loading
654 * - <dst>, <src>, <len> must be variables
655 * - __m128i <xmm0> ~ <xmm8> used in MOVEUNALIGNED_LEFT47_IMM must be pre-defined
657 #define MOVEUNALIGNED_LEFT47(dst, src, len, offset) \
660 case 0x01: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x01); break; \
661 case 0x02: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x02); break; \
662 case 0x03: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x03); break; \
663 case 0x04: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x04); break; \
664 case 0x05: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x05); break; \
665 case 0x06: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x06); break; \
666 case 0x07: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x07); break; \
667 case 0x08: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x08); break; \
668 case 0x09: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x09); break; \
669 case 0x0A: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0A); break; \
670 case 0x0B: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0B); break; \
671 case 0x0C: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0C); break; \
672 case 0x0D: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0D); break; \
673 case 0x0E: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0E); break; \
674 case 0x0F: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0F); break; \
680 rte_memcpy(void *dst, const void *src, size_t n)
682 __m128i xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8;
683 uintptr_t dstu = (uintptr_t)dst;
684 uintptr_t srcu = (uintptr_t)src;
690 * Copy less than 16 bytes
694 *(uint8_t *)dstu = *(const uint8_t *)srcu;
695 srcu = (uintptr_t)((const uint8_t *)srcu + 1);
696 dstu = (uintptr_t)((uint8_t *)dstu + 1);
699 *(uint16_t *)dstu = *(const uint16_t *)srcu;
700 srcu = (uintptr_t)((const uint16_t *)srcu + 1);
701 dstu = (uintptr_t)((uint16_t *)dstu + 1);
704 *(uint32_t *)dstu = *(const uint32_t *)srcu;
705 srcu = (uintptr_t)((const uint32_t *)srcu + 1);
706 dstu = (uintptr_t)((uint32_t *)dstu + 1);
709 *(uint64_t *)dstu = *(const uint64_t *)srcu;
715 * Fast way when copy size doesn't exceed 512 bytes
718 rte_mov16((uint8_t *)dst, (const uint8_t *)src);
719 rte_mov16((uint8_t *)dst - 16 + n, (const uint8_t *)src - 16 + n);
723 rte_mov32((uint8_t *)dst, (const uint8_t *)src);
724 rte_mov16((uint8_t *)dst - 16 + n, (const uint8_t *)src - 16 + n);
728 rte_mov32((uint8_t *)dst, (const uint8_t *)src);
729 rte_mov16((uint8_t *)dst + 32, (const uint8_t *)src + 32);
730 rte_mov16((uint8_t *)dst - 16 + n, (const uint8_t *)src - 16 + n);
734 goto COPY_BLOCK_128_BACK15;
739 rte_mov128((uint8_t *)dst, (const uint8_t *)src);
740 rte_mov128((uint8_t *)dst + 128, (const uint8_t *)src + 128);
741 src = (const uint8_t *)src + 256;
742 dst = (uint8_t *)dst + 256;
744 COPY_BLOCK_255_BACK15:
747 rte_mov128((uint8_t *)dst, (const uint8_t *)src);
748 src = (const uint8_t *)src + 128;
749 dst = (uint8_t *)dst + 128;
751 COPY_BLOCK_128_BACK15:
754 rte_mov64((uint8_t *)dst, (const uint8_t *)src);
755 src = (const uint8_t *)src + 64;
756 dst = (uint8_t *)dst + 64;
758 COPY_BLOCK_64_BACK15:
761 rte_mov32((uint8_t *)dst, (const uint8_t *)src);
762 src = (const uint8_t *)src + 32;
763 dst = (uint8_t *)dst + 32;
766 rte_mov16((uint8_t *)dst, (const uint8_t *)src);
767 rte_mov16((uint8_t *)dst - 16 + n, (const uint8_t *)src - 16 + n);
771 rte_mov16((uint8_t *)dst - 16 + n, (const uint8_t *)src - 16 + n);
777 * Make store aligned when copy size exceeds 512 bytes,
778 * and make sure the first 15 bytes are copied, because
779 * unaligned copy functions require up to 15 bytes
782 dstofss = (uintptr_t)dst & 0x0F;
784 dstofss = 16 - dstofss + 16;
786 rte_mov32((uint8_t *)dst, (const uint8_t *)src);
787 src = (const uint8_t *)src + dstofss;
788 dst = (uint8_t *)dst + dstofss;
790 srcofs = ((uintptr_t)src & 0x0F);
797 * Copy 256-byte blocks
799 for (; n >= 256; n -= 256) {
800 rte_mov256((uint8_t *)dst, (const uint8_t *)src);
801 dst = (uint8_t *)dst + 256;
802 src = (const uint8_t *)src + 256;
808 goto COPY_BLOCK_255_BACK15;
812 * For copy with unaligned load
814 MOVEUNALIGNED_LEFT47(dst, src, n, srcofs);
819 goto COPY_BLOCK_64_BACK15;
822 #endif /* RTE_MACHINE_CPUFLAG */
828 #endif /* _RTE_MEMCPY_X86_64_H_ */