Rewrite run.sh script

test-xsim/__build.sh

@@ -1,7 +1,8 @@
 #!/usr/bin/env bash
 set -e
 
-FFILE=../source/sources.f
+. ../scripts/sim_vars.sh
+
 SOURCES=$(cat $FFILE | sed -ze 's/\n/ /g')
 
 rm -rf xsim.dir
@@ -10,4 +11,4 @@ rm -rf xvlog.* xelab.* xsim.*
 rm -rf top.wdb
 
 xvlog -work work --sv top.sv $SOURCES
-xelab --O3 -L work top
+xelab --O3 --generic_top "CPU_COUNT=$CPU_COUNT" -L work top