objtool/klp: Extricate checksum calculation from validate_branch()

In preparation for porting the checksum code to other arches, make its functionality independent from the CFG reverse engineering code. Move it into a standalone calculate_checksums() function which iterates all functions and instructions directly, rather than being called inline from do_validate_branch(). Since checksum_update_insn() is no longer called during CFG traversal, it needs to manually iterate the alternatives.

Josh Poimboeuf committed 7 months ago

Commit 30cae581 parent 6282e9f2 files · +80 −32Browse files

Showing the changes to tools/objtool/include (1 of 2 files). Show all

Unified · Split

tools/objtool/include/objtool/checksum.h+1−5

@@ -33,11 +33,7 @@ static inline void checksum_finish(struct symbol *func) · 32 unmodified lines
33		33
34	#else /* !BUILD_KLP */	34	#else /* !BUILD_KLP */
35		35
36	static inline void checksum_init(struct symbol *func) {}	36	static inline int calculate_checksums(struct objtool_file *file) { return -ENOSYS; }
37	static inline void checksum_update(struct symbol *func,
38	struct instruction *insn,
39	const void *data, size_t size) {}
40	static inline void checksum_finish(struct symbol *func) {}
41		37
42	#endif /* !BUILD_KLP */	38	#endif /* !BUILD_KLP */
43		39