mirror of
https://git.wownero.com/wownero/RandomWOW.git
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128 lines
No EOL
4.5 KiB
C++
128 lines
No EOL
4.5 KiB
C++
/*
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Copyright (c) 2018 tevador
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This file is part of RandomX.
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RandomX is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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RandomX is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with RandomX. If not, see<http://www.gnu.org/licenses/>.
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*/
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#include <cstring>
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#include <iomanip>
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#include <stdexcept>
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#include "virtual_machine.hpp"
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#include "common.hpp"
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#include "aes_hash.hpp"
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#include "blake2/blake2.h"
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#include "intrin_portable.h"
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#include "allocator.hpp"
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randomx_vm::~randomx_vm() {
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}
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void randomx_vm::resetRoundingMode() {
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rx_reset_float_state();
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}
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namespace randomx {
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static inline uint64_t getSmallPositiveFloatBits(uint64_t entropy) {
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auto exponent = entropy >> 59; //0..31
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auto mantissa = entropy & mantissaMask;
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exponent += exponentBias;
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exponent &= exponentMask;
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exponent <<= mantissaSize;
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return exponent | mantissa;
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}
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static inline uint64_t getStaticExponent(uint64_t entropy) {
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auto exponent = constExponentBits;
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exponent |= (entropy >> (64 - staticExponentBits)) << dynamicExponentBits;
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exponent <<= mantissaSize;
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return exponent;
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}
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static inline uint64_t getFloatMask(uint64_t entropy) {
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constexpr uint64_t mask22bit = (1ULL << 22) - 1;
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return (entropy & mask22bit) | getStaticExponent(entropy);
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}
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}
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void randomx_vm::initialize() {
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store64(®.a[0].lo, randomx::getSmallPositiveFloatBits(program.getEntropy(0)));
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store64(®.a[0].hi, randomx::getSmallPositiveFloatBits(program.getEntropy(1)));
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store64(®.a[1].lo, randomx::getSmallPositiveFloatBits(program.getEntropy(2)));
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store64(®.a[1].hi, randomx::getSmallPositiveFloatBits(program.getEntropy(3)));
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store64(®.a[2].lo, randomx::getSmallPositiveFloatBits(program.getEntropy(4)));
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store64(®.a[2].hi, randomx::getSmallPositiveFloatBits(program.getEntropy(5)));
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store64(®.a[3].lo, randomx::getSmallPositiveFloatBits(program.getEntropy(6)));
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store64(®.a[3].hi, randomx::getSmallPositiveFloatBits(program.getEntropy(7)));
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mem.ma = program.getEntropy(8) & randomx::CacheLineAlignMask;
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mem.mx = program.getEntropy(10);
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auto addressRegisters = program.getEntropy(12);
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config.readReg0 = 0 + (addressRegisters & 1);
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addressRegisters >>= 1;
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config.readReg1 = 2 + (addressRegisters & 1);
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addressRegisters >>= 1;
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config.readReg2 = 4 + (addressRegisters & 1);
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addressRegisters >>= 1;
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config.readReg3 = 6 + (addressRegisters & 1);
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datasetOffset = (program.getEntropy(13) & randomx::DatasetExtraItems) * randomx::CacheLineSize;
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store64(&config.eMask[0], randomx::getFloatMask(program.getEntropy(14)));
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store64(&config.eMask[1], randomx::getFloatMask(program.getEntropy(15)));
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}
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namespace randomx {
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alignas(16) volatile static rx_vec_i128 aesDummy;
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template<class Allocator, bool softAes>
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VmBase<Allocator, softAes>::~VmBase() {
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Allocator::freeMemory(scratchpad, ScratchpadSize);
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}
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template<class Allocator, bool softAes>
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void VmBase<Allocator, softAes>::allocate() {
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if (datasetPtr == nullptr)
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throw std::invalid_argument("Cache/Dataset not set");
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if (!softAes) { //if hardware AES is not supported, it's better to fail now than to return a ticking bomb
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rx_vec_i128 tmp = rx_load_vec_i128((const rx_vec_i128*)&aesDummy);
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tmp = rx_aesenc_vec_i128(tmp, tmp);
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rx_store_vec_i128((rx_vec_i128*)&aesDummy, tmp);
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}
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scratchpad = (uint8_t*)Allocator::allocMemory(ScratchpadSize);
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}
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template<class Allocator, bool softAes>
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void VmBase<Allocator, softAes>::getFinalResult(void* out, size_t outSize) {
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hashAes1Rx4<softAes>(scratchpad, ScratchpadSize, ®.a);
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blake2b(out, outSize, ®, sizeof(RegisterFile), nullptr, 0);
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}
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template<class Allocator, bool softAes>
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void VmBase<Allocator, softAes>::initScratchpad(void* seed) {
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fillAes1Rx4<softAes>(seed, ScratchpadSize, scratchpad);
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}
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template<class Allocator, bool softAes>
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void VmBase<Allocator, softAes>::generateProgram(void* seed) {
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fillAes1Rx4<softAes>(seed, sizeof(program), &program);
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}
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template class VmBase<AlignedAllocator<CacheLineSize>, false>;
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template class VmBase<AlignedAllocator<CacheLineSize>, true>;
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template class VmBase<LargePageAllocator, false>;
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template class VmBase<LargePageAllocator, true>;
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} |