Commit 0391fcb5 authored by Vasily Gorbik's avatar Vasily Gorbik Committed by Martin Schwidefsky

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: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 971a9ca6
...@@ -98,3 +98,6 @@ obj-$(CONFIG_TRACEPOINTS) += trace.o ...@@ -98,3 +98,6 @@ obj-$(CONFIG_TRACEPOINTS) += trace.o
# vdso # vdso
obj-y += vdso64/ obj-y += vdso64/
obj-$(CONFIG_COMPAT) += vdso32/ obj-$(CONFIG_COMPAT) += vdso32/
chkbss := head.o head64.o als.o early_nobss.o
include $(srctree)/arch/s390/scripts/Makefile.chkbss
...@@ -8,3 +8,6 @@ obj-y += mem.o xor.o ...@@ -8,3 +8,6 @@ obj-y += mem.o xor.o
lib-$(CONFIG_SMP) += spinlock.o lib-$(CONFIG_SMP) += spinlock.o
lib-$(CONFIG_KPROBES) += probes.o lib-$(CONFIG_KPROBES) += probes.o
lib-$(CONFIG_UPROBES) += probes.o lib-$(CONFIG_UPROBES) += probes.o
chkbss := mem.o
include $(srctree)/arch/s390/scripts/Makefile.chkbss
# 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
$(call cmd,chkbss)
...@@ -54,3 +54,6 @@ obj-$(CONFIG_CRASH_DUMP) += sclp_sdias.o zcore.o ...@@ -54,3 +54,6 @@ obj-$(CONFIG_CRASH_DUMP) += sclp_sdias.o zcore.o
hmcdrv-objs := hmcdrv_mod.o hmcdrv_dev.o hmcdrv_ftp.o hmcdrv_cache.o diag_ftp.o sclp_ftp.o hmcdrv-objs := hmcdrv_mod.o hmcdrv_dev.o hmcdrv_ftp.o hmcdrv_cache.o diag_ftp.o sclp_ftp.o
obj-$(CONFIG_HMC_DRV) += hmcdrv.o obj-$(CONFIG_HMC_DRV) += hmcdrv.o
chkbss := sclp_early_core.o
include $(srctree)/arch/s390/scripts/Makefile.chkbss
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