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#####################
# #
# FoolOS Makefile #
# #
#####################
#TODO: use implicit rules !!
#lets use the size of a 1.44 floppy for a start for our boot img
IMAGE_SIZE=1474560
#final image
all: FoolOS.img
#assembling of final image
FoolOS.img: mbr.bin kernel.bin fill.bin
cat $^ | head -c $(IMAGE_SIZE) > $@
#some data just to fill up to the target image_size
fill.bin: boot/fill.asm
nasm -f bin $^ -o $@
#this is the MASTER BOOT RECORD, where our bootloader lives
mbr.bin: boot/mbr.asm
nasm -f bin $^ -o $@
kernel_entry.o: boot/kernel_entry.asm
nasm -f elf $^ -o $@
kernel.o: kernel/kernel.c kernel/console.h
gcc -ffreestanding -m32 -o $@ -c $< -fno-asynchronous-unwind-tables -O0
console.o: kernel/console.c kernel/console.h
gcc -ffreestanding -m32 -o $@ -c $< -fno-asynchronous-unwind-tables -O0
interrupts.o: kernel/interrupts.c kernel/interrupts.h
gcc -ffreestanding -m32 -o $@ -c $< -fno-asynchronous-unwind-tables -O0
keyboard.o: kernel/keyboard.c
gcc -ffreestanding -m32 -o $@ -c $< -fno-asynchronous-unwind-tables -O0
kernel.bin: kernel_entry.o kernel.o console.o interrupts.o keyboard.o
ld -o $@ -Ttext 0x1000 --oformat binary -melf_i386 $^ -O0
# dump from vbox
dump: FoolOS.img
vboxmanage debugvm FoolOs dumpguestcore --filename dump.elf
xxd dump.elf > dump.xxd
run: FoolOS.img
bochs
clean:
-rm *.bin *.o *.img dump.elf dump.xxd
.PHONY: all clean
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