base_dir=$(abspath ..)
sim_dir=$(abspath .)

PROJECT ?= example
MODEL ?= TestHarness
CONFIG ?= DefaultExampleConfig
CFG_PROJECT ?= $(PROJECT)
TB ?= TestDriver
TOP ?= ExampleTop

sim_name = verilator

sim = $(sim_dir)/simulator-$(PROJECT)-$(CONFIG)
sim_debug = $(sim_dir)/simulator-$(PROJECT)-$(CONFIG)-debug

default: $(sim)

debug: $(sim_debug)

CXXFLAGS := $(CXXFLAGS) -O1 -std=c++11 -I$(RISCV)/include -D__STDC_FORMAT_MACROS
LDFLAGS := $(LDFLAGS) -L$(RISCV)/lib -Wl,-rpath,$(RISCV)/lib -L$(sim_dir) -lfesvr -lpthread

include $(base_dir)/Makefrag
include $(sim_dir)/Makefrag-verilator
ifneq ($(filter run% %.run %.out %.vpd %.vcd,$(MAKECMDGOALS)),)
-include $(build_dir)/$(long_name).d
endif

rocketchip_vsrc_dir = $(ROCKETCHIP_DIR)/src/main/resources/vsrc

sim_vsrcs = \
	$(VERILOG_FILE) \
	$(HARNESS_FILE) \
	$(SMEMS_FILE)

model_dir = $(build_dir)/$(long_name)
model_dir_debug = $(build_dir)/$(long_name).debug

model_header = $(model_dir)/V$(MODEL).h
model_header_debug = $(model_dir_debug)/V$(MODEL).h

model_mk = $(model_dir)/V$(MODEL).mk
model_mk_debug = $(model_dir_debug)/V$(MODEL).mk

$(model_mk): $(sim_vsrcs) $(sim_dotf) $(INSTALLED_VERILATOR)
	rm -rf $(build_dir)/$(long_name)
	mkdir -p $(build_dir)/$(long_name)
	$(VERILATOR) $(VERILATOR_FLAGS) -Mdir $(build_dir)/$(long_name) \
	-o $(sim) $(sim_vsrcs) -f $(sim_dotf) -f $(sim_top_blackboxes) -f $(sim_harness_blackboxes) -LDFLAGS "$(LDFLAGS)" \
	-CFLAGS "-I$(build_dir) -include $(build_dir)/$(long_name).plusArgs -include $(model_header)"
	touch $@

$(sim): $(model_mk)
	$(MAKE) VM_PARALLEL_BUILDS=1 -C $(build_dir)/$(long_name) -f V$(MODEL).mk


$(model_mk_debug): $(sim_vsrcs) $(sim_dotf) $(INSTALLED_VERILATOR)
	rm -rf $(build_dir)/$(long_name)
	mkdir -p $(build_dir)/$(long_name).debug
	$(VERILATOR) $(VERILATOR_FLAGS) -Mdir $(build_dir)/$(long_name).debug --trace \
	-o $(sim_debug) $(sim_vsrcs) -f $(sim_dotf) -f $(sim_top_blackboxes) -f $(sim_harness_blackboxes) -LDFLAGS "$(LDFLAGS)" \
	-CFLAGS "-I$(build_dir) -include $(build_dir)/$(long_name).plusArgs -include $(model_header_debug)"
	touch $@

$(sim_debug): $(model_mk_debug)
	$(MAKE) VM_PARALLEL_BUILDS=1 -C $(build_dir)/$(long_name).debug -f V$(MODEL).mk

$(output_dir)/%.out: $(output_dir)/% $(sim)
	$(sim) +verbose +max-cycles=1000000 $< 3>&1 1>&2 2>&3 | spike-dasm > $@

$(output_dir)/%.run: $(output_dir)/% $(sim)
	$(sim) +max-cycles=1000000 $< && touch $@

$(output_dir)/%.vpd: $(output_dir)/% $(sim_debug)
	rm -f $@.vcd && mkfifo $@.vcd
	vcd2vpd $@.vcd $@ > /dev/null &
	$(sim_debug) -v$@.vcd +max-cycles=1000000 $<

run-regression-tests: $(addprefix $(output_dir)/,$(addsuffix .out,$(regression-tests)))

run-regression-tests-fast: $(addprefix $(output_dir)/,$(addsuffix .run,$(regression-tests)))

run-regression-tests-debug: $(addprefix $(output_dir)/,$(addsuffix .vpd,$(regression-tests)))

clean: clean-scala
	rm -rf generated-src ./simulator-*