pcsx2/common/include/Utilities/MemsetFast.inl

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/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2010 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <xmmintrin.h>
#define StoreDestIdx(idx) \
case idx: \
_mm_store_ps(&destxmm[idx - 1][0], srcreg)
template <u8 data>
__noinline void memset_sse_a(void *dest, const size_t size)
{
const uint MZFqwc = size / 16;
pxAssert((size & 0xf) == 0);
__m128 srcreg;
if (data != 0) {
static __aligned16 const u8 loadval[8] = {data, data, data, data, data, data, data, data};
srcreg = _mm_loadh_pi(_mm_load_ps((float *)loadval), (__m64 *)loadval);
} else
srcreg = _mm_setzero_ps();
float(*destxmm)[4] = (float(*)[4])dest;
switch (MZFqwc & 0x07) {
StoreDestIdx(0x07);
StoreDestIdx(0x06);
StoreDestIdx(0x05);
StoreDestIdx(0x04);
StoreDestIdx(0x03);
StoreDestIdx(0x02);
StoreDestIdx(0x01);
}
destxmm += (MZFqwc & 0x07);
for (uint i = 0; i < MZFqwc / 8; ++i, destxmm += 8) {
_mm_store_ps(&destxmm[0][0], srcreg);
_mm_store_ps(&destxmm[1][0], srcreg);
_mm_store_ps(&destxmm[2][0], srcreg);
_mm_store_ps(&destxmm[3][0], srcreg);
_mm_store_ps(&destxmm[4][0], srcreg);
_mm_store_ps(&destxmm[5][0], srcreg);
_mm_store_ps(&destxmm[6][0], srcreg);
_mm_store_ps(&destxmm[7][0], srcreg);
}
};
static __fi void memzero_sse_a(void *dest, const size_t size)
{
memset_sse_a<0>(dest, size);
}
#undef StoreDestIdx
template <u8 data, typename T>
__noinline void memset_sse_a(T &dest)
{
static_assert((sizeof(dest) & 0xf) == 0, "Bad size for SSE memset");
memset_sse_a<data>(&dest, sizeof(dest));
}
template <typename T>
void memzero_sse_a(T &dest)
{
static_assert((sizeof(dest) & 0xf) == 0, "Bad size for SSE memset");
memset_sse_a<0>(&dest, sizeof(dest));
}