added timestamped output directory in test/runs.

- also included 'clean' command to remove build and output directories

Author: adviyer

Makefile

@@ -2,10 +2,21 @@
 
 export LIBPYTHON_LOC=$(shell cocotb-config --libpython)
 
+TIMESTAMP := $(shell date +%Y%m%d%H%M%S)
+
 test_%:
+	mkdir -p build
 	make compile
 	iverilog -o build/sim.vvp -s gpu -g2012 build/gpu.v
-	MODULE=test.test_$* vvp -M $$(cocotb-config --prefix)/cocotb/libs -m libcocotbvpi_icarus build/sim.vvp
+	cd test && mkdir -p runs
+	cd ..
+	MODULE=test.test_$* vvp -M $$(cocotb-config --prefix)/cocotb/libs -m libcocotbvpi_icarus build/sim.vvp > test/runs/test_$*_$(TIMESTAMP).out
+
+clean:
+	rm -rf build/*
+	rmdir build
+	rm -rf test/runs/*
+	rmdir test/runs
 
 compile:
 	make compile_alu
@@ -17,7 +28,7 @@ compile:
 	mv build/temp.v build/gpu.v
 
 compile_%:
-	sv2v -w build/$*.v src/$*.sv
+	./sv2v/sv2v -w build/$*.v src/$*.sv
 
 # TODO: Get gtkwave visualizaiton