CFLAGS = -I../include -Wall -Wextra
LDFLAGS =

CURDIR := $(abspath $(dir $(lastword $(MAKEFILE_LIST))))

OUT := build

BIN = $(OUT)/
SHELL_HACK := $(shell mkdir -p $(OUT))


TEST_OBJ = $(OUT)/kernel.elf
TEST_DUMP = $(OUT)/kernel.dump
TEST_BIN = $(OUT)/kernel.bin


.PHONY: kernel clean

kernel: $(TEST_OBJ) $(TEST_BIN)

$(TEST_OBJ):
# 	riscv64-unknown-elf-gcc -march=rv32i -mabi=ilp32 -Wl,-Ttext=0x0 -nostdlib -g -o $@ $<
# 	riscv64-unknown-elf-gcc -march=rv64gc -mabi=lp64 -Wl,-Ttext=0x0 -nostdlib -g -o $@ $<
	riscv64-unknown-elf-gcc -g -march=rv64gc -mabi=lp64d -nostdlib -T link.ld -o $@ kernel.c  start.s
	riscv64-unknown-elf-objdump -d -S $@ > $(TEST_DUMP)

$(TEST_BIN): $(TEST_OBJ)
	riscv64-unknown-elf-objcopy -O binary $< $@

clean:
	$(RM) -r $(BIN)

qemu: kernel
	qemu-system-riscv64 -machine virt -smp 1 -bios none -kernel $(TEST_OBJ) -nographic -s -S


# gdb: kernel
# 	gdb-multiarch                         \
# 		-ex "file $(TEST_OBJ)"              \
# 		-ex "set debug remote 1"            \
# 		-ex "target remote localhost:1234" \

gdb: kernel
	gdb-multiarch $(TEST_OBJ) -ex "target remote localhost:1234"