68 lines
1.5 KiB
C++
68 lines
1.5 KiB
C++
#ifndef _NPC_TRACER_H_
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#define _NPC_TRACER_H_
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#include "components.hpp"
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#include <filesystem>
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#include <verilated_vcd_c.h>
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template <class T> class Tracer {
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std::shared_ptr<T> top;
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std::unique_ptr<VerilatedVcdC> m_trace;
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uint64_t cycle = 0;
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public:
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Tracer(T *top, std::filesystem::path wavefile) {
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top = top;
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Verilated::traceEverOn(true);
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m_trace = std::make_unique<VerilatedVcdC>();
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top->trace(m_trace.get(), 5);
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m_trace->open(wavefile.c_str());
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}
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~Tracer() { m_trace->close(); }
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/**
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* Dump signals to waveform file. Must be called once after every top->eval()
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* call.
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*/
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void update() { m_trace->dump(cycle++); }
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};
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template <typename T> class VlModuleInterfaceCommon : public T {
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uint64_t sim_time = 0;
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uint64_t posedge_cnt = 0;
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std::unique_ptr<Tracer<T>> tracer;
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public:
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VlModuleInterfaceCommon<T>(std::filesystem::path wavefile) {
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if (!wavefile.empty())
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tracer = std::make_unique<Tracer<T>>(this, wavefile);
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}
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void eval() {
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if (this->is_posedge()) {
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posedge_cnt++;
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}
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T::clock = !T::clock;
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sim_time++;
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T::eval();
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if (tracer)
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tracer->update();
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}
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void eval(int n) {
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for (int i = 0; i < n; i++) {
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this->eval();
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}
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}
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void reset_eval(int n) {
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extern bool g_skip_memcheck;
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g_skip_memcheck = true;
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this->reset = 1;
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this->eval(n);
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this->reset = 0;
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g_skip_memcheck = false;
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}
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bool is_posedge() {
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// Will be posedge when eval is called
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return T::clock == 0;
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}
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};
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#endif
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