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e10764614a
Move the checksum functionality out of the main objtool command into a new "objtool klp checksum" subcommand. This has the benefit of making the code (and the patch generation process itself) more modular. For bisectability, both "objtool --checksum" and "objtool klp checksum" work for now. The former will be removed after klp-build has been converted to use the new subcommand. Acked-by: Song Liu <song@kernel.org> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef _OBJTOOL_KLP_H
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#define _OBJTOOL_KLP_H
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#define SHF_RELA_LIVEPATCH 0x00100000
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#define SHN_LIVEPATCH 0xff20
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/*
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* .init.klp_objects and .init.klp_funcs are created by klp diff and used by the
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* patch module init code to build the klp_patch, klp_object and klp_func
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* structs needed by the livepatch API.
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*/
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#define KLP_OBJECTS_SEC ".init.klp_objects"
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#define KLP_FUNCS_SEC ".init.klp_funcs"
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/*
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* __klp_relocs is an intermediate section which are created by klp diff and
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* converted into KLP symbols/relas by "objtool klp post-link". This is needed
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* to work around the linker, which doesn't preserve SHN_LIVEPATCH or
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* SHF_RELA_LIVEPATCH, nor does it support having two RELA sections for a
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* single PROGBITS section.
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*/
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#define KLP_RELOCS_SEC "__klp_relocs"
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#define KLP_STRINGS_SEC ".rodata.klp.str1.1"
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struct klp_reloc {
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void *offset;
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void *sym;
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u32 type;
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};
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int cmd_klp_checksum(int argc, const char **argv);
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int cmd_klp_diff(int argc, const char **argv);
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int cmd_klp_post_link(int argc, const char **argv);
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#endif /* _OBJTOOL_KLP_H */
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