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verilator optional PC trace support

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Signed-off-by: Eric Matthews <ematthew@sfu.ca>
This commit is contained in:
Eric Matthews 2022-05-12 22:22:45 -04:00
parent bae3594995
commit 1ffbacbb51
3 changed files with 29 additions and 7 deletions
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15
test_benches/verilator/CVA5Tracer.cc
View file

@ -112,7 +112,10 @@ void CVA5Tracer::reset() {
void CVA5Tracer::set_log_file(std::ofstream* logFile) {
this->logFile = logFile;
}
void CVA5Tracer::set_pc_file(std::ofstream* pcFile) {
this->pcFile = pcFile;
logPC = true;
}
void CVA5Tracer::update_UART() {
if (tb->write_uart) {
@ -151,7 +154,6 @@ void CVA5Tracer::tick() {
verilatorWaveformTracer->dump(vluint32_t(cycle_count));
#endif
if (check_if_instruction_retired(BENCHMARK_START_COLLECTION_NOP)) {
reset_stats();
collect_stats = true;
@ -170,6 +172,15 @@ void CVA5Tracer::tick() {
update_stats();
update_UART();
update_memory();
#ifdef TRACE_ON
for (int i =0; i < tb->NUM_RETIRE_PORTS; i++) {
if (logPC && tb->retire_ports_valid[i]) {
*pcFile << std::hex << tb->retire_ports_pc[i] << std::endl;
}
}
#endif
}

4
test_benches/verilator/CVA5Tracer.h
View file

@ -87,6 +87,7 @@ public:
void tick();
void set_log_file(std::ofstream* logFile);
void set_pc_file(std::ofstream* pcFile);
void start_tracer(const char *trace_file);
uint64_t get_cycle_count();
@ -99,6 +100,9 @@ private:
VerilatedVcdC *verilatorWaveformTracer;
#endif
std::ofstream* logFile;
std::ofstream* pcFile;
bool logPC = false;
int reset_length = 64;
int stall_limit = 2000;
int stall_count = 0;

17
test_benches/verilator/cva5_sim.cc
View file

@ -16,7 +16,7 @@ CVA5Tracer *cva5Tracer;
//#define TRACE_ON
using namespace std;
int main(int argc, char **argv) {
ofstream logFile, sigFile;
ofstream logFile, sigFile, pcFile;
ifstream programFile;
// Initialize Verilators variables
@ -42,6 +42,8 @@ int main(int argc, char **argv) {
exit(EXIT_FAILURE);
}
logFile.open (argv[1]);
sigFile.open (argv[2]);
//printf("HW INIT:%s \n", argv[3]);
@ -55,14 +57,18 @@ int main(int argc, char **argv) {
cout << "Failed to open sigFile: " << argv[2] << endl;
exit(EXIT_FAILURE);
}
if (!programFile.is_open()) {
cout << "Failed to open programFile: " << argv[3] << endl;
exit(EXIT_FAILURE);
}
// Create an instance of our module under test
cva5Tracer = new CVA5Tracer(programFile);
cva5Tracer->set_log_file(&logFile);
if (argv[5]) {
pcFile.open (argv[5]);
}
if (pcFile.is_open()) {
cva5Tracer->set_pc_file(&pcFile);
}
#ifdef TRACE_ON
cva5Tracer->start_tracer(argv[4]);
#endif
@ -93,6 +99,7 @@ int main(int argc, char **argv) {
logFile.close();
sigFile.close();
programFile.close();
pcFile.close();
delete cva5Tracer;