47 lines
1.6 KiB
Makefile
47 lines
1.6 KiB
Makefile
OBJCOPY=objcopy
|
||
LIBGCC := $(shell $(CC) -print-libgcc-file-name) # To benefit from FP/64bits artihm.
|
||
EXTRA := $(shell [ -f ../userland/userprogs.kimg ] && echo ../userland/userprogs.kimg)
|
||
|
||
all: sos_qemu.img termslave
|
||
|
||
-include ../.mkvars
|
||
|
||
# The image is the simple concatenation of the boot sector and the kernel
|
||
# It may be use in bochs or on a real floppy, but NOT in qemu (see below)
|
||
sos_bsect.img: bsect.bin sos.bin
|
||
cat $^ > $@
|
||
@echo "[31mYou can use the $@ image in bochs or on a real floppy (NOT qemu)[m"
|
||
|
||
# For qemu, the trick is to tell it we have *more* than 1440 sectors (720kB).
|
||
# Rtherwise the qemu disk geometry will be configured to be that of a 720kB
|
||
# floppy, while our boot sector assumes it to be 1.44MB
|
||
sos_qemu.img: sos_bsect.img
|
||
# Padding with 0s after the bsect/kernel image
|
||
cat $< /dev/zero | dd of=$@ bs=1k count=1440
|
||
@echo "[31mYou can use the $@ image in qemu, bochs, or on a real floppy[m"
|
||
|
||
# we extract the boot sector from the main ELF binary
|
||
bsect.bin: sos_bsect.elf
|
||
$(OBJCOPY) -v -O binary -j .bootsect $< $@
|
||
|
||
# we extract the kernel code from the main ELF binary
|
||
sos.bin: sos_bsect.elf
|
||
$(OBJCOPY) -v -O binary -R .bootsect $< $@
|
||
|
||
# The main ELF binary contains the boot sector and the kernel code
|
||
# linked together (hence we deal with a SINGLE image that we split
|
||
# above) because they share some symbol definitions
|
||
sos_bsect.elf: bootsect.o compile_kernel
|
||
$(LD) --warn-common -T ./sos_bsect.lds -o $@ \
|
||
bootsect.o $(wildcard ../hwcore/*.o ../drivers/*.o ../sos/*.o)\
|
||
$(EXTRA) $(LIBGCC)
|
||
|
||
compile_kernel:
|
||
$(MAKE) -C ..
|
||
|
||
termslave: termslave.c
|
||
cc -Wall -o $@ $<
|
||
|
||
clean:
|
||
$(RM) *.img *.elf *.bin *~ *.o *.out termslave
|