Rewrite run.sh script

test-verilator/Makefile

@@ -3,10 +3,12 @@ TOP_MODULE = testbench
 SOURCES = top.cpp clock_generator.cpp
 FLAGS_FILE = ../source/sources.f
 INCLUDES =
+PARAMS :=
+THREADS := 1
 
 FLAGS = -Wno-WIDTH -cc --top-module $(TOP_MODULE) +1800-2017ext+sv \
 	--timing --Mdir $(TOP_MODULE) -o $(TOP_MODULE) -f $(FLAGS_FILE) \
-	--timescale "1ps/1ps" --threads 1 -j 0
+	$(PARAMS) --timescale "1ps/1ps" --threads $(THREADS) -j 0
 
 # FLAGS += --trace