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// SPDX-License-Identifier: BSD-3-Clause
/* Copyright 2017-2020, Intel Corporation */
#include <immintrin.h>
#include <stddef.h>
#include <stdint.h>
#include "pmem2_arch.h"
#include "flush.h"
#include "memcpy_memset.h"
#include "memcpy_sse2.h"
#include "out.h"
static force_inline __m128i
mm_loadu_si128(const char *src, unsigned idx)
{
return _mm_loadu_si128((const __m128i *)src + idx);
}
static force_inline void
mm_store_si128(char *dest, unsigned idx, __m128i src)
{
_mm_store_si128((__m128i *)dest + idx, src);
}
static force_inline void
memmove_mov4x64b(char *dest, const char *src, flush64b_fn flush64b)
{
__m128i xmm0 = mm_loadu_si128(src, 0);
__m128i xmm1 = mm_loadu_si128(src, 1);
__m128i xmm2 = mm_loadu_si128(src, 2);
__m128i xmm3 = mm_loadu_si128(src, 3);
__m128i xmm4 = mm_loadu_si128(src, 4);
__m128i xmm5 = mm_loadu_si128(src, 5);
__m128i xmm6 = mm_loadu_si128(src, 6);
__m128i xmm7 = mm_loadu_si128(src, 7);
__m128i xmm8 = mm_loadu_si128(src, 8);
__m128i xmm9 = mm_loadu_si128(src, 9);
__m128i xmm10 = mm_loadu_si128(src, 10);
__m128i xmm11 = mm_loadu_si128(src, 11);
__m128i xmm12 = mm_loadu_si128(src, 12);
__m128i xmm13 = mm_loadu_si128(src, 13);
__m128i xmm14 = mm_loadu_si128(src, 14);
__m128i xmm15 = mm_loadu_si128(src, 15);
mm_store_si128(dest, 0, xmm0);
mm_store_si128(dest, 1, xmm1);
mm_store_si128(dest, 2, xmm2);
mm_store_si128(dest, 3, xmm3);
mm_store_si128(dest, 4, xmm4);
mm_store_si128(dest, 5, xmm5);
mm_store_si128(dest, 6, xmm6);
mm_store_si128(dest, 7, xmm7);
mm_store_si128(dest, 8, xmm8);
mm_store_si128(dest, 9, xmm9);
mm_store_si128(dest, 10, xmm10);
mm_store_si128(dest, 11, xmm11);
mm_store_si128(dest, 12, xmm12);
mm_store_si128(dest, 13, xmm13);
mm_store_si128(dest, 14, xmm14);
mm_store_si128(dest, 15, xmm15);
flush64b(dest + 0 * 64);
flush64b(dest + 1 * 64);
flush64b(dest + 2 * 64);
flush64b(dest + 3 * 64);
}
static force_inline void
memmove_mov2x64b(char *dest, const char *src, flush64b_fn flush64b)
{
__m128i xmm0 = mm_loadu_si128(src, 0);
__m128i xmm1 = mm_loadu_si128(src, 1);
__m128i xmm2 = mm_loadu_si128(src, 2);
__m128i xmm3 = mm_loadu_si128(src, 3);
__m128i xmm4 = mm_loadu_si128(src, 4);
__m128i xmm5 = mm_loadu_si128(src, 5);
__m128i xmm6 = mm_loadu_si128(src, 6);
__m128i xmm7 = mm_loadu_si128(src, 7);
mm_store_si128(dest, 0, xmm0);
mm_store_si128(dest, 1, xmm1);
mm_store_si128(dest, 2, xmm2);
mm_store_si128(dest, 3, xmm3);
mm_store_si128(dest, 4, xmm4);
mm_store_si128(dest, 5, xmm5);
mm_store_si128(dest, 6, xmm6);
mm_store_si128(dest, 7, xmm7);
flush64b(dest + 0 * 64);
flush64b(dest + 1 * 64);
}
static force_inline void
memmove_mov1x64b(char *dest, const char *src, flush64b_fn flush64b)
{
__m128i xmm0 = mm_loadu_si128(src, 0);
__m128i xmm1 = mm_loadu_si128(src, 1);
__m128i xmm2 = mm_loadu_si128(src, 2);
__m128i xmm3 = mm_loadu_si128(src, 3);
mm_store_si128(dest, 0, xmm0);
mm_store_si128(dest, 1, xmm1);
mm_store_si128(dest, 2, xmm2);
mm_store_si128(dest, 3, xmm3);
flush64b(dest + 0 * 64);
}
static force_inline void
memmove_mov_sse_fw(char *dest, const char *src, size_t len,
flush_fn flush, flush64b_fn flush64b)
{
size_t cnt = (uint64_t)dest & 63;
if (cnt > 0) {
cnt = 64 - cnt;
if (cnt > len)
cnt = len;
memmove_small_sse2(dest, src, cnt, flush);
dest += cnt;
src += cnt;
len -= cnt;
}
while (len >= 4 * 64) {
memmove_mov4x64b(dest, src, flush64b);
dest += 4 * 64;
src += 4 * 64;
len -= 4 * 64;
}
if (len >= 2 * 64) {
memmove_mov2x64b(dest, src, flush64b);
dest += 2 * 64;
src += 2 * 64;
len -= 2 * 64;
}
if (len >= 1 * 64) {
memmove_mov1x64b(dest, src, flush64b);
dest += 1 * 64;
src += 1 * 64;
len -= 1 * 64;
}
if (len)
memmove_small_sse2(dest, src, len, flush);
}
static force_inline void
memmove_mov_sse_bw(char *dest, const char *src, size_t len,
flush_fn flush, flush64b_fn flush64b)
{
dest += len;
src += len;
size_t cnt = (uint64_t)dest & 63;
if (cnt > 0) {
if (cnt > len)
cnt = len;
dest -= cnt;
src -= cnt;
len -= cnt;
memmove_small_sse2(dest, src, cnt, flush);
}
while (len >= 4 * 64) {
dest -= 4 * 64;
src -= 4 * 64;
len -= 4 * 64;
memmove_mov4x64b(dest, src, flush64b);
}
if (len >= 2 * 64) {
dest -= 2 * 64;
src -= 2 * 64;
len -= 2 * 64;
memmove_mov2x64b(dest, src, flush64b);
}
if (len >= 1 * 64) {
dest -= 1 * 64;
src -= 1 * 64;
len -= 1 * 64;
memmove_mov1x64b(dest, src, flush64b);
}
if (len)
memmove_small_sse2(dest - len, src - len, len, flush);
}
static force_inline void
memmove_mov_sse2(char *dest, const char *src, size_t len,
flush_fn flush, flush64b_fn flush64b)
{
if ((uintptr_t)dest - (uintptr_t)src >= len)
memmove_mov_sse_fw(dest, src, len, flush, flush64b);
else
memmove_mov_sse_bw(dest, src, len, flush, flush64b);
}
void
memmove_mov_sse2_noflush(char *dest, const char *src, size_t len)
{
LOG(15, "dest %p src %p len %zu", dest, src, len);
memmove_mov_sse2(dest, src, len, noflush, noflush64b);
}
void
memmove_mov_sse2_empty(char *dest, const char *src, size_t len)
{
LOG(15, "dest %p src %p len %zu", dest, src, len);
memmove_mov_sse2(dest, src, len, flush_empty_nolog, flush64b_empty);
}
void
memmove_mov_sse2_clflush(char *dest, const char *src, size_t len)
{
LOG(15, "dest %p src %p len %zu", dest, src, len);
memmove_mov_sse2(dest, src, len, flush_clflush_nolog, pmem_clflush);
}
void
memmove_mov_sse2_clflushopt(char *dest, const char *src, size_t len)
{
LOG(15, "dest %p src %p len %zu", dest, src, len);
memmove_mov_sse2(dest, src, len, flush_clflushopt_nolog,
pmem_clflushopt);
}
void
memmove_mov_sse2_clwb(char *dest, const char *src, size_t len)
{
LOG(15, "dest %p src %p len %zu", dest, src, len);
memmove_mov_sse2(dest, src, len, flush_clwb_nolog, pmem_clwb);
}
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