picorv32/testbench.cc

58 lines
1.5 KiB
C++

#include <iostream>
#include "Vpicorv32_wrapper.h"
#include "verilated_vcd_c.h"
int main(int argc, char** argv, char** env) {
printf("Built with %s %s.\n", Verilated::productName(),
Verilated::productVersion());
printf("Recommended: Verilator 4.0 or later.\n");
Verilated::commandArgs(argc, argv);
Vpicorv32_wrapper* top = new Vpicorv32_wrapper;
std::string hexfile;
if (argc > 1) {
hexfile = std::string(argv[1]);
} else {
hexfile = std::string("firmware/firmware.hex");
}
auto hex = (uint8_t*)(top->hex_file.data());
auto csr = hexfile.c_str();
for (int i = 0; i < hexfile.size(); i += 1) {
*(hex + (128 - i)) = *(uint8_t*)(csr + i);
}
// Tracing (vcd)
VerilatedVcdC* tfp = NULL;
const char* flag_vcd = Verilated::commandArgsPlusMatch("vcd");
if (flag_vcd && 0 == strcmp(flag_vcd, "+vcd")) {
Verilated::traceEverOn(true);
tfp = new VerilatedVcdC;
top->trace(tfp, 99);
tfp->open("testbench.vcd");
}
// Tracing (data bus, see showtrace.py)
FILE* trace_fd = NULL;
const char* flag_trace = Verilated::commandArgsPlusMatch("trace");
if (flag_trace && 0 == strcmp(flag_trace, "+trace")) {
trace_fd = fopen("testbench.trace", "w");
}
top->wb_clk = 0;
top->wb_rst = 1;
int t = 0;
while (!Verilated::gotFinish()) {
if (t > 200) top->wb_rst = 0;
top->wb_clk = !top->wb_clk;
top->eval();
if (tfp) tfp->dump(t);
t += 5;
}
if (tfp) tfp->close();
delete top;
exit(0);
}