You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 

88 lines
2.5 KiB

# Used to generated .d file that deal with header dependencies
CPPFLAGS = -MMD
AS=nasm
ASFLAGS += -f elf32
LDFLAGS += -m elf_i386
CFLAGS += -m32 -Wall -Wextra -Werror -ffreestanding -fno-exceptions -fno-pie -fno-stack-protector -fno-tree-vectorize -D__KERNEL__
CXXFLAGS += -m32 -Wall -Wextra -Werror -ffreestanding -fno-exceptions -fno-rtti -fno-pie
DEBUG_FLAGS += -g -Og -DDEBUG -fno-omit-frame-pointer -fno-inline
LIBGCC = $(shell $(CC) -print-libgcc-file-name $(CFLAGS))
QEMU_OPT += -hda disk.img
ARCH?=x86
SUBDIRS := core drivers tests arch/$(ARCH)
INCDIRS += $(foreach dir, $(SUBDIRS), -I$(dir))
CPPFLAGS += $(INCDIRS)
asmsrc=
asmobj=$(asmsrc:%.asm=%.o)
gasmsrc=$(wildcard arch/$(ARCH)/*.S arch/$(ARCH)/boot/*.S)
gasmobj=$(gasmsrc:%.S=%.o)
csrc=$(shell find $(SUBDIRS) -type f -name "*.c")# $(wildcard *.c)
cobj=$(csrc:%.c=%.o)
deps=$(csrc:%.c=%.d) $(gasmsrc:%.S=%.d)
kernel kernel.sym &: $(asmobj) $(gasmobj) $(cobj) linker.ld
$(LD) $(LDFLAGS) $(asmobj) $(gasmobj) $(cobj) -o kernel -T linker.ld $(LIBGCC)
objcopy --only-keep-debug kernel kernel.sym
objcopy --strip-debug kernel
objcopy --add-gnu-debuglink=kernel.sym kernel
fd.iso: kernel
mkdir -p isodir/boot/grub
cp $< isodir/boot/
@printf "menuentry \"myos\" {\n\tmultiboot /boot/kernel\n}" > isodir/boot/grub/grub.cfg
grub-mkrescue -o $@ isodir
userspace: FORCE
$(MAKE) -C userspace
FORCE:
@
disk.img: disk.sfdisk userspace
qemu-img create -f raw $@ 32M
sfdisk $@ < $<
# Before having filesystem support, just dump the user prog into the first partition
strip userspace/user -o userspace/user.strip
$(eval file_size:=$(shell du -b userspace/user.strip|awk '{print $$1}' | xargs printf "%016d" )) \
sed '1s/^/$(file_size)/' userspace/user.strip | dd of=disk.img seek=2048 bs=512
# NASM without preprocessing
%.o:%.asm
$(AS) $(ASFLAGS) -o $@ $<
#GNU GAS ASM with C Preprocessing
%.o: %.S
$(CC) $(CFLAGS) $(CPPFLAGS) -c "$<" -o "$@"
test: CFLAGS += -DRUN_TEST
test: clean kernel disk.img
qemu-system-x86_64 -kernel kernel -serial stdio -m 32M $(QEMU_OPT)
run:kernel disk.img
qemu-system-x86_64 -kernel $< $(QEMU_OPT)
debug: CFLAGS += $(DEBUG_FLAGS)
debug: CXXFLAGS += $(DEBUG_FLAGS)
debug:kernel kernel.sym disk.img
gdb -q -x debug.gdb
debug_test: CFLAGS += $(DEBUG_FLAGS) -DRUN_TEST
debug_test: debug
screenshot:
shutter --window=qemu -o screenshot_1.png -e && zopflipng screenshot_1.png screenshot_1.png
clean:
$(RM) kernel $(asmobj) $(gasmobj) $(cobj) $(deps) fd.iso kernel.sym
$(RM) -r isodir
.PHONY:
userspace screenshot
ifneq ($(MAKECMDGOALS),clean)
-include $(deps)
endif