vm_interpreted.hpp

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/*
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
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      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
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*/
 
#pragma once
 
#include <new>
#include <vector>
#include "common.hpp"
#include "virtual_machine.hpp"
#include "bytecode_machine.hpp"
#include "intrin_portable.h"
#include "allocator.hpp"
 
namespace randomx {
 
    template<class Allocator, bool softAes>
    class InterpretedVm : public VmBase<Allocator, softAes>, public BytecodeMachine {
    public:
        using VmBase<Allocator, softAes>::mem;
        using VmBase<Allocator, softAes>::scratchpad;
        using VmBase<Allocator, softAes>::program;
        using VmBase<Allocator, softAes>::config;
        using VmBase<Allocator, softAes>::reg;
        using VmBase<Allocator, softAes>::datasetPtr;
        using VmBase<Allocator, softAes>::datasetOffset;
        void* operator new(size_t size) {
            void* ptr = AlignedAllocator<CacheLineSize>::allocMemory(size);
            if (ptr == nullptr)
                throw std::bad_alloc();
            return ptr;
        }
        void operator delete(void* ptr) {
            AlignedAllocator<CacheLineSize>::freeMemory(ptr, sizeof(InterpretedVm));
        }
        void run(void* seed) override;
        void setDataset(randomx_dataset* dataset) override;
    protected:
        virtual void datasetRead(uint64_t blockNumber, int_reg_t(&r)[RegistersCount]);
        virtual void datasetPrefetch(uint64_t blockNumber);
    private:
        void execute();
 
        InstructionByteCode bytecode[RANDOMX_PROGRAM_SIZE];
    };
 
    using InterpretedVmDefault = InterpretedVm<AlignedAllocator<CacheLineSize>, true>;
    using InterpretedVmHardAes = InterpretedVm<AlignedAllocator<CacheLineSize>, false>;
    using InterpretedVmLargePage = InterpretedVm<LargePageAllocator, true>;
    using InterpretedVmLargePageHardAes = InterpretedVm<LargePageAllocator, false>;
}