CC = arm-none-eabi-gcc
LD = arm-none-eabi-g++
CXX = arm-none-eabi-g++
OBJCOPY = arm-none-eabi-objcopy

linker_script = bootloader.ld
includes = 
sources =

CFLAGS = -march=armv6-m -g -ffunction-sections -fdata-sections -Os -Werror -Wall -flto
CXXFLAGS = $(CFLAGS) -std=c++20 -fno-exceptions -fcoroutines
CPPFLAGS = -MD -MP
LDFLAGS = -march=armv6-m \
		  -g --specs=nano.specs --specs=nosys.specs \
		  -Wl,--gc-sections -Os \
		  -Wl,--print-memory-usage -flto

includes += -Ihal/cmsis

sources += hal/lib/common/xil_assert.c
includes += -Ihal/lib/common

sources += hal/uart/xuartlite.c hal/uart/xuartlite_stats.c hal/uart/xuartlite_intr.c
includes += -Ihal/uart

bootloader_objects = bootloader.o vector_table.o $(sources:.c=.o)
app_objects = app_init.o crash.o main.o uart.o stdlib.o async.o trace.o $(sources:.c=.o)

CPPFLAGS += $(includes)

all: bootloader.elf app.bin

%.bin: %.elf
	$(OBJCOPY) -O binary $< $@

bootloader.elf: $(bootloader_objects) bootloader.ld
	$(LD) -Wl,-Tbootloader.ld $(LDFLAGS) -o $@ $(bootloader_objects)

app.elf: $(app_objects) app.ld
	$(LD) -Wl,-Tapp.ld $(LDFLAGS) -o $@ $(app_objects)

.PHONY: clean test

deps = $(app_objects:.o=.d) $(bootloader_objects:.o=.d)

clean:
	rm -rf *.elf *.bin $(tests) $(app_objects) $(bootloader_objects) $(deps)

HOSTCXX = /usr/local/opt/llvm/bin/clang++
HOSTLDFLAGS = -lgmock -lgtest -lgtest_main -L/usr/local/opt/llvm/lib -L/usr/local/lib
HOSTCFLAGS = -std=c++20 -g\
			 -I/usr/local/opt/llvm/include \
			 -I/usr/local/include \
			 -I/usr/local/include \
			 -MP -MD

TSAN_CFLAGS = $(HOSTCFLAGS) -fsanitize=thread
ASAN_CFLAGS = $(HOSTCFLAGS) -fsanitize=address -fsanitize=leak

tests = ring_buffer_test async_test_asan async_test_tsan

.PRECIOUS: $(tests)

test: $(tests)

ring_buffer_test: ring_buffer_test.cc
	mkdir test
	$(HOSTCXX) $(HOSTCFLAGS) -o test/$@ $< $(HOSTLDFLAGS)
	./test/$@

%.host.o: %.cc
	$(HOSTCXX) $(HOSTCFLAGS) -c -o $@ $<

async_test_tsan: async_test.cc async.host.o
	mkdir -p test
	$(HOSTCXX) $(TSAN_CFLAGS) -o test/$@ $^ $(HOSTLDFLAGS)
	TSAN_OPTIONS='suppressions=tsan.suppressions' ./test/$@

async_test_asan: async_test.cc async.host.o
	mkdir -p test
	$(HOSTCXX) $(ASAN_CFLAGS) -o test/$@ $^ $(HOSTLDFLAGS)
	ASAN_OPTIONS=detect_leaks=1 ./test/$@

test_deps = async.host.d

-include $(deps)
-include $(test_deps)