linux_dsm_epyc7002/arch/s390/scripts/Makefile.chkbss
Vasily Gorbik 0391fcb5e1 s390: introduce compile time check for empty .bss section
Introduce compile time check for files which should avoid using .bss
section, because of the following reasons:
- .bss section has not been zeroed yet,
- initrd has not been moved to a safe location and could be overlapping
with .bss section.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2018-05-09 10:55:01 +02:00

15 lines
341 B
Makefile

# SPDX-License-Identifier: GPL-2.0
quiet_cmd_chkbss = CHKBSS $<
define cmd_chkbss
if ! $(OBJDUMP) -j .bss -w -h $< | awk 'END { if ($$3) exit 1 }'; then \
echo "error: $< .bss section is not empty" >&2; exit 1; \
fi; \
touch $@;
endef
$(obj)/built-in.a: $(patsubst %, $(obj)/%.chkbss, $(chkbss))
%.o.chkbss: %.o
$(call cmd,chkbss)