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Examples: Add +trace flag at runtime

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This commit is contained in:
Wilson Snyder 2017-11-05 06:51:29 -05:00
parent 6edaef9598
commit dfd22b2b07
4 changed files with 25 additions and 15 deletions
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2
examples/tracing_c/Makefile
View File

@ -73,7 +73,7 @@ run:
@echo @echo
@echo "-- RUN ---------------------" @echo "-- RUN ---------------------"
@mkdir -p logs @mkdir -p logs
obj_dir/Vtop | tee logs/sim.log obj_dir/Vtop +trace | tee logs/sim.log
@echo @echo
@echo "-- COVERAGE ----------------" @echo "-- COVERAGE ----------------"

9
examples/tracing_c/sim_main.cpp
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@ -41,14 +41,19 @@ int main(int argc, char** argv, char** env) {
// Construct the Verilated model, from Vtop.h generated from Verilating "top.v" // Construct the Verilated model, from Vtop.h generated from Verilating "top.v"
Vtop* top = new Vtop; // Or use a const unique_ptr, or the VL_UNIQUE_PTR wrapper Vtop* top = new Vtop; // Or use a const unique_ptr, or the VL_UNIQUE_PTR wrapper
// If verilator was invoked with --trace, open trace
#if VM_TRACE #if VM_TRACE
// If verilator was invoked with --trace argument,
// and if at run time passed the +trace argument, turn on tracing
VerilatedVcdC* tfp = NULL;
const char* flag = Verilated::commandArgsPlusMatch("trace");
if (flag && 0==strcmp(flag, "+trace")) {
Verilated::traceEverOn(true); // Verilator must compute traced signals Verilated::traceEverOn(true); // Verilator must compute traced signals
VL_PRINTF("Enabling waves into logs/vlt_dump.vcd...\n"); VL_PRINTF("Enabling waves into logs/vlt_dump.vcd...\n");
VerilatedVcdC* tfp = new VerilatedVcdC; tfp = new VerilatedVcdC;
top->trace(tfp, 99); // Trace 99 levels of hierarchy top->trace(tfp, 99); // Trace 99 levels of hierarchy
mkdir("logs", 0777); mkdir("logs", 0777);
tfp->open("logs/vlt_dump.vcd"); // Open the dump file tfp->open("logs/vlt_dump.vcd"); // Open the dump file
}
#endif #endif
// Set some inputs // Set some inputs

2
examples/tracing_sc/Makefile
View File

@ -81,7 +81,7 @@ run:
@echo @echo
@echo "-- RUN ---------------------" @echo "-- RUN ---------------------"
@mkdir -p logs @mkdir -p logs
obj_dir/Vtop | tee logs/sim.log obj_dir/Vtop +trace | tee logs/sim.log
@echo @echo
@echo "-- COVERAGE ----------------" @echo "-- COVERAGE ----------------"

7
examples/tracing_sc/sc_main.cpp
View File

@ -87,13 +87,18 @@ int sc_main(int argc, char* argv[]) {
sc_start(1); sc_start(1);
#endif #endif
// Turn on waves
#if VM_TRACE #if VM_TRACE
// If verilator was invoked with --trace argument,
// and if at run time passed the +trace argument, turn on tracing
VerilatedVcdSc* tfp = NULL;
const char* flag = Verilated::commandArgsPlusMatch("trace");
if (flag && 0==strcmp(flag, "+trace")) {
cout << "Enabling waves into logs/vlt_dump.vcd...\n"; cout << "Enabling waves into logs/vlt_dump.vcd...\n";
VerilatedVcdSc* tfp = new VerilatedVcdSc; VerilatedVcdSc* tfp = new VerilatedVcdSc;
top->trace (tfp, 99); top->trace (tfp, 99);
mkdir("logs", 0777); mkdir("logs", 0777);
tfp->open ("logs/vlt_dump.vcd"); tfp->open ("logs/vlt_dump.vcd");
}
#endif #endif
// Simulate until $finish // Simulate until $finish