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559d1e45a1
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>
50 lines
1.2 KiB
Makefile
50 lines
1.2 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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# ===========================================================================
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# Post-link riscv pass
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# ===========================================================================
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#
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# Check that vmlinux relocations look sane
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PHONY := __archpost
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__archpost:
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-include include/config/auto.conf
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include $(srctree)/scripts/Kbuild.include
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quiet_cmd_relocs_check = CHKREL $@
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cmd_relocs_check = \
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$(CONFIG_SHELL) $(srctree)/arch/riscv/tools/relocs_check.sh "$(OBJDUMP)" "$(NM)" "$@"
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ifdef CONFIG_RELOCATABLE
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quiet_cmd_cp_vmlinux_relocs = CPREL vmlinux.relocs
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cmd_cp_vmlinux_relocs = cp vmlinux vmlinux.relocs
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quiet_cmd_relocs_strip = STRIPREL $@
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cmd_relocs_strip = $(OBJCOPY) --remove-section='.rel.*' \
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--remove-section='.rel__*' \
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--remove-section='.rela.*' \
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--remove-section='.rela__*' $@
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endif
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# `@true` prevents complaint when there is nothing to be done
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vmlinux: FORCE
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@true
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ifdef CONFIG_RELOCATABLE
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$(call if_changed,relocs_check)
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$(call if_changed,cp_vmlinux_relocs)
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$(call if_changed,relocs_strip)
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endif
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%.ko: FORCE
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@true
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clean:
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@true
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PHONY += FORCE clean
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FORCE:
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.PHONY: $(PHONY)
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