Add a breakpoint in the example simulation testbench.

Author: whitequark

example/Makefile

@@ -6,7 +6,7 @@ CXXFLAGS += -g -O0
 CXXFLAGS += -DCXXRTL_SERVER_TRACE
 
 design_sim: design_sim.cc design.cc
-	clang++ $(CXXFLAGS) -o $@ $^
+	clang++ $(CXXFLAGS) -o $@ $(abspath $^)
 
 design.h: design.cc
 design.cc: design.v

example/design_sim.cc

@@ -21,15 +21,18 @@ int main(int argc, char **argv) {
   agent.step();
 
   size_t steps = 0;
-  while (true) {
+  do {
     agent.advance(1_ns);
     top.p_clk.set(false);
     agent.step();
 
     agent.advance(1_ns);
     top.p_clk.set(true);
     agent.step();
-  }
+
+    if (steps == 3)
+      agent.breakpoint(CXXRTL_LOCATION);
+  } while (steps++ < 1000);
 
   return 0;
 }