Make stop() immediately end simulation for Verilator tests (#434)

1 files changed, 7 insertions, 0 deletions

diff --git a/src/main/resources/top.cpp b/src/main/resources/top.cpp
index 075d7085..4e9c1433 100644
--- a/src/main/resources/top.cpp
+++ b/src/main/resources/top.cpp
@@ -5,6 +5,13 @@
 # include <verilated_vcd_c.h>	// Trace file format header
 #endif
 
+// Override Verilator definition so first $finish ends simulation
+// Note: VL_USER_FINISH needs to be defined when compiling Verilator code
+void vl_finish(const char* filename, int linenum, const char* hier) {
+  Verilated::flushCall();
+  exit(0);
+}
+
 using namespace std;
 
 //VGCDTester *top;