mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
![Alexandre Ghiti](/assets/img/avatar_default.png)
To circumvent an issue where placing the relocations inside the init sections produces empty relocations, use --emit-relocs. But to avoid carrying those relocations in vmlinux, use an intermediate vmlinux.relocs file which is a copy of vmlinux *before* stripping its relocations. Suggested-by: Björn Töpel <bjorn@kernel.org> Suggested-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Link: https://lore.kernel.org/r/20230329045329.64565-7-alexghiti@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
49 lines
1.2 KiB
Makefile
49 lines
1.2 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
# ===========================================================================
|
|
# Post-link riscv pass
|
|
# ===========================================================================
|
|
#
|
|
# Check that vmlinux relocations look sane
|
|
|
|
PHONY := __archpost
|
|
__archpost:
|
|
|
|
-include include/config/auto.conf
|
|
include $(srctree)/scripts/Kbuild.include
|
|
|
|
quiet_cmd_relocs_check = CHKREL $@
|
|
cmd_relocs_check = \
|
|
$(CONFIG_SHELL) $(srctree)/arch/riscv/tools/relocs_check.sh "$(OBJDUMP)" "$(NM)" "$@"
|
|
|
|
ifdef CONFIG_RELOCATABLE
|
|
quiet_cmd_cp_vmlinux_relocs = CPREL vmlinux.relocs
|
|
cmd_cp_vmlinux_relocs = cp vmlinux vmlinux.relocs
|
|
|
|
quiet_cmd_relocs_strip = STRIPREL $@
|
|
cmd_relocs_strip = $(OBJCOPY) --remove-section='.rel.*' \
|
|
--remove-section='.rel__*' \
|
|
--remove-section='.rela.*' \
|
|
--remove-section='.rela__*' $@
|
|
endif
|
|
|
|
# `@true` prevents complaint when there is nothing to be done
|
|
|
|
vmlinux: FORCE
|
|
@true
|
|
ifdef CONFIG_RELOCATABLE
|
|
$(call if_changed,relocs_check)
|
|
$(call if_changed,cp_vmlinux_relocs)
|
|
$(call if_changed,relocs_strip)
|
|
endif
|
|
|
|
%.ko: FORCE
|
|
@true
|
|
|
|
clean:
|
|
@true
|
|
|
|
PHONY += FORCE clean
|
|
|
|
FORCE:
|
|
|
|
.PHONY: $(PHONY)
|