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# To specify cross compiler prefix, use CROSS_PREFIX=
# $ make CROSS_PREFIX=s390x-linux-gnu-
.PHONY: all clean
all: a-b-bios.h
fwdir=../../../pc-bios/s390-ccw
CFLAGS+=-ffreestanding -fno-delete-null-pointer-checks -fPIE -Os \
-msoft-float -march=z900 -fno-asynchronous-unwind-tables \
-fno-stack-protector -Wl,-pie -Wl,--build-id=none -nostdlib
a-b-bios.h: s390x.elf
echo "$$__note" > header.tmp
xxd -i $< | sed -e 's/.*int.*//' >> header.tmp
mv header.tmp $@
# We use common-page-size=16 to avoid big padding in the ELF file
s390x.elf: a-b-bios.c
$(CROSS_PREFIX)gcc $(CFLAGS) -I$(fwdir) $(fwdir)/start.S \
$(fwdir)/sclp.c -Wl,-zcommon-page-size=16 -o $@ $<
$(CROSS_PREFIX)strip $@
clean:
@rm -rf *.elf *.o
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