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# If you want run this makefile immediately, then set environment
# variables (CC, LD, AS, OBJDUMP) to path of your cross-compiler.
#
# The best way to compile $BOOTBIN is to run the corresponding
# target in the main Makefile, which is in the root of the
# project (.../path/to/os/Makefile)
BOOTBIN = bootloader.bin
.PHONY: all objdump clean
all: $(BOOTBIN)
$(BOOTBIN): bootsect.bin setup.bin
cat $^ > $@
bootsect.bin: bootsect.o
$(CC) -Wl,--oformat binary -Ttext 0x7c00 -o $@ \
-ffreestanding -nostdlib \
$^ -lgcc
setup.bin: setup.o
$(CC) -Wl,--oformat binary -Ttext 0x0200 -o $@ \
-ffreestanding -nostdlib \
$^ -lgcc
%.o: %.s
$(AS) $< -o $@
objdump-bootsect:
$(OBJDUMP) -D -m i386 -b binary \
--adjust-vma=0x7c00 -Maddr16,data16 bootsect.bin
objdump-setup:
$(OBJDUMP) -D -m i386 -b binary \
--adjust-vma=0x2000 -Maddr16,data16 setup.bin
clean:
rm -rf bootsect.o setup.o $(BOOTBIN)
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