CSRCounters.cpp

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// SPDX-License-Identifier: BSD-3-Clause
//
// This file is part of ETISS. It is licensed under the BSD 3-Clause License; you may not use this file except in
// compliance with the License. You should have received a copy of the license along with this project. If not, see the
// LICENSE file.
 
#include <cstdint>
#include "etiss/CPUArch.h"
#include "etiss/jit/CPU.h"
#include "etiss/CPUCore.h"
#include "etiss/ETISS.h"
#include <chrono>
 
using namespace etiss;
 
extern "C"
{
 
    uint64 etiss_get_cycles(ETISS_CPU *const cpu, ETISS_System *const system, void *const *const plugin_pointers)
    {
        return cpu->cpuTime_ps / cpu->cpuCycleTime_ps;
    }
 
    uint64 etiss_get_time()
    {
        auto steady_now = std::chrono::system_clock::now().time_since_epoch();
        auto us = std::chrono::duration_cast<std::chrono::microseconds>(steady_now);
        return (uint64)us.count();
    }
 
    uint64 etiss_get_instret(ETISS_CPU *const cpu, ETISS_System *const system, void *const *const plugin_pointers)
    {
        return cpu->cpuTime_ps / cpu->cpuCycleTime_ps;
    }
}