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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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Josh Poimboeuf
873a2208ea
Start checksumming data objects in preparation for revamping the correlation algorithm. Acked-by: Song Liu <song@kernel.org> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef _OBJTOOL_CHECKSUM_H
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#define _OBJTOOL_CHECKSUM_H
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#include <objtool/elf.h>
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#ifdef BUILD_KLP
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static inline void checksum_init(struct symbol *sym)
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{
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if (sym && !sym->csum.state) {
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sym->csum.state = XXH3_createState();
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XXH3_64bits_reset(sym->csum.state);
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}
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}
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static inline void __checksum_update(struct symbol *sym, const void *data,
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size_t size)
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{
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XXH3_64bits_update(sym->csum.state, data, size);
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}
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static inline void __checksum_update_insn(struct symbol *sym,
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struct instruction *insn,
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const void *data, size_t size)
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{
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__checksum_update(sym, data, size);
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dbg_checksum_insn(sym, insn, XXH3_64bits_digest(sym->csum.state));
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}
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static inline void __checksum_update_object(struct symbol *sym,
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unsigned long offset,
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const char *what, const void *data,
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size_t size)
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{
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__checksum_update(sym, &offset, sizeof(offset));
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__checksum_update(sym, data, size);
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dbg_checksum_object(sym, offset, what, XXH3_64bits_digest(sym->csum.state));
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}
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static inline void checksum_finish(struct symbol *sym)
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{
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if (sym && sym->csum.state) {
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sym->csum.checksum = XXH3_64bits_digest(sym->csum.state);
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XXH3_freeState(sym->csum.state);
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sym->csum.state = NULL;
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}
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}
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int calculate_checksums(struct objtool_file *file);
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int create_sym_checksum_section(struct objtool_file *file);
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#else /* !BUILD_KLP */
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static inline int calculate_checksums(struct objtool_file *file) { return -ENOSYS; }
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static inline int create_sym_checksum_section(struct objtool_file *file) { return -EINVAL; }
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#endif /* !BUILD_KLP */
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#endif /* _OBJTOOL_CHECKSUM_H */
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