OBJS = start.o dhry_1.o dhry_2.o stdlib.o
CFLAGS = -MD -O3 -m32 -march=RV32IM -ffreestanding -nostdlib -DTIME -DRISCV
TOOLCHAIN_PREFIX = riscv32-unknown-elf-

test: testbench.exe dhry.hex
	vvp -N testbench.exe

timing: timing.txt
	grep '^##' timing.txt | gawk 'x != "" {print x,$$3-y;} {x=$$2;y=$$3;}' | sort | uniq -c | \
		gawk '{printf("%03d-%-7s %2d %-8s (%d)\n",$$3,$$2,$$3,$$2,$$1);}' | sort | cut -c13-

timing.txt: timing.exe dhry.hex
	vvp -N timing.exe > timing.txt

testbench.exe: testbench.v ../picorv32.v
	iverilog -o testbench.exe testbench.v ../picorv32.v
	chmod -x testbench.exe

timing.exe: testbench.v ../picorv32.v
	iverilog -o timing.exe -DTIMING testbench.v ../picorv32.v
	chmod -x timing.exe

dhry.hex: dhry.bin ../firmware/makehex.py
	python3 ../firmware/makehex.py $< 16384 > $@

dhry.bin: dhry.elf
	$(TOOLCHAIN_PREFIX)objcopy -O binary $< $@
	chmod -x $@
	
dhry.elf: $(OBJS) ../firmware/sections.lds
	$(TOOLCHAIN_PREFIX)gcc $(CFLAGS) -Wl,-Bstatic,-T,../firmware/sections.lds,-Map,dhry.map,--strip-debug -o $@ $(OBJS) -lgcc
	chmod -x $@

%.o: %.c
	$(TOOLCHAIN_PREFIX)gcc -c $(CFLAGS) $<

%.o: %.S
	$(TOOLCHAIN_PREFIX)gcc -c $(CFLAGS) $<

dhry_1.o dhry_2.o: CFLAGS += -Wno-implicit-int -Wno-implicit-function-declaration

clean:
	rm -rf *.o *.d dhry.elf dhry.map dhry.bin dhry.hex testbench.exe testbench.vcd timing.exe timing.txt

.PHONY: test clean

-include *.d