78 lines
1.3 KiB
C++
78 lines
1.3 KiB
C++
#include <memory>
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#include <limits>
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#include <cstdint>
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#include <iostream>
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#include <verilated.h>
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#include "Vboothmul.h"
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using word = int16_t;
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using dword = int32_t;
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constexpr word minint = std::numeric_limits<word>::min();
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constexpr word maxint = std::numeric_limits<word>::max();
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uint32_t main_time = 0;
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double sc_time_stamp() {
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return main_time;
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}
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Vboothmul *mod;
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static void run_clock() {
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mod->clk = !mod->clk;
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mod->eval();
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main_time++;
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mod->clk = !mod->clk;
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mod->eval();
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main_time++;
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}
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static void run(word i, word j) {
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// Processor is twos-compliment
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mod->a1 = i;
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mod->a2 = j;
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mod->arm = 1;
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while (!mod->fin)
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run_clock();
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dword expected = (dword) i * (dword) j;
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if (mod->outn != expected) {
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std::cout << i << "*" << j << "=" << expected
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<< "(" << mod->outn << ")" << std::endl;
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}
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mod->arm = 0;
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run_clock();
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}
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int main(int argc, char **argv) {
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Verilated::commandArgs(argc, argv);
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// Verilated::traceEverOn(true);
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mod = new Vboothmul;
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mod->clk = 0;
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mod->arm = 0;
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run_clock();
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run(minint, minint);
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run(minint, maxint);
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run(maxint, minint);
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run(maxint, maxint);
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for (word i = -20; i < 20; i++) {
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for (word j = - 20; j < 20; j++) {
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run(i, j);
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}
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}
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mod->final();
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delete mod;
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std::cout << "done" << std::endl;
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return 0;
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}
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