RandomWOW/src/vm_interpreted.cpp
tevador 07293a9378
Regression tests (#73)
* instruction decode/execute separated into class BytecodeMachine
* added randomx-tests project
* removed the use of non-portable __COUNTER__ macro
* removed the use of unsupported FENV_ACCESS pragma
2019-06-22 15:54:43 +02:00

131 lines
4.7 KiB
C++

/*
Copyright (c) 2018-2019, tevador <tevador@gmail.com>
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
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* Redistributions in binary form must reproduce the above copyright
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documentation and/or other materials provided with the distribution.
* Neither the name of the copyright holder 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 HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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*/
#include <iostream>
#include <iomanip>
#include <stdexcept>
#include <sstream>
#include <cmath>
#include <cfloat>
#include "vm_interpreted.hpp"
#include "dataset.hpp"
#include "intrin_portable.h"
#include "reciprocal.h"
namespace randomx {
template<class Allocator, bool softAes>
void InterpretedVm<Allocator, softAes>::setDataset(randomx_dataset* dataset) {
datasetPtr = dataset;
mem.memory = dataset->memory;
}
template<class Allocator, bool softAes>
void InterpretedVm<Allocator, softAes>::run(void* seed) {
VmBase<Allocator, softAes>::generateProgram(seed);
randomx_vm::initialize();
execute();
}
template<class Allocator, bool softAes>
void InterpretedVm<Allocator, softAes>::execute() {
NativeRegisterFile nreg;
for(unsigned i = 0; i < RegisterCountFlt; ++i)
nreg.a[i] = rx_load_vec_f128(&reg.a[i].lo);
compileProgram(program, bytecode, nreg);
uint32_t spAddr0 = mem.mx;
uint32_t spAddr1 = mem.ma;
for(unsigned ic = 0; ic < RANDOMX_PROGRAM_ITERATIONS; ++ic) {
uint64_t spMix = nreg.r[config.readReg0] ^ nreg.r[config.readReg1];
spAddr0 ^= spMix;
spAddr0 &= ScratchpadL3Mask64;
spAddr1 ^= spMix >> 32;
spAddr1 &= ScratchpadL3Mask64;
for (unsigned i = 0; i < RegistersCount; ++i)
nreg.r[i] ^= load64(scratchpad + spAddr0 + 8 * i);
for (unsigned i = 0; i < RegisterCountFlt; ++i)
nreg.f[i] = rx_cvt_packed_int_vec_f128(scratchpad + spAddr1 + 8 * i);
for (unsigned i = 0; i < RegisterCountFlt; ++i)
nreg.e[i] = maskRegisterExponentMantissa(config, rx_cvt_packed_int_vec_f128(scratchpad + spAddr1 + 8 * (RegisterCountFlt + i)));
executeBytecode(bytecode, scratchpad, config);
mem.mx ^= nreg.r[config.readReg2] ^ nreg.r[config.readReg3];
mem.mx &= CacheLineAlignMask;
datasetPrefetch(datasetOffset + mem.mx);
datasetRead(datasetOffset + mem.ma, nreg.r);
std::swap(mem.mx, mem.ma);
for (unsigned i = 0; i < RegistersCount; ++i)
store64(scratchpad + spAddr1 + 8 * i, nreg.r[i]);
for (unsigned i = 0; i < RegisterCountFlt; ++i)
nreg.f[i] = rx_xor_vec_f128(nreg.f[i], nreg.e[i]);
for (unsigned i = 0; i < RegisterCountFlt; ++i)
rx_store_vec_f128((double*)(scratchpad + spAddr0 + 16 * i), nreg.f[i]);
spAddr0 = 0;
spAddr1 = 0;
}
for (unsigned i = 0; i < RegistersCount; ++i)
store64(&reg.r[i], nreg.r[i]);
for (unsigned i = 0; i < RegisterCountFlt; ++i)
rx_store_vec_f128(&reg.f[i].lo, nreg.f[i]);
for (unsigned i = 0; i < RegisterCountFlt; ++i)
rx_store_vec_f128(&reg.e[i].lo, nreg.e[i]);
}
template<class Allocator, bool softAes>
void InterpretedVm<Allocator, softAes>::datasetRead(uint64_t address, int_reg_t(&r)[RegistersCount]) {
uint64_t* datasetLine = (uint64_t*)(mem.memory + address);
for (int i = 0; i < RegistersCount; ++i)
r[i] ^= datasetLine[i];
}
template<class Allocator, bool softAes>
void InterpretedVm<Allocator, softAes>::datasetPrefetch(uint64_t address) {
rx_prefetch_nta(mem.memory + address);
}
template class InterpretedVm<AlignedAllocator<CacheLineSize>, false>;
template class InterpretedVm<AlignedAllocator<CacheLineSize>, true>;
template class InterpretedVm<LargePageAllocator, false>;
template class InterpretedVm<LargePageAllocator, true>;
}