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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_ALTERNATIVE_H
#define __ASM_ALTERNATIVE_H
#include <asm/alternative-macros.h>
#ifndef __ASSEMBLY__
#include <linux/init.h>
#include <linux/types.h>
#include <linux/stddef.h>
struct alt_instr {
s32 orig_offset; /* offset to original instruction */
s32 alt_offset; /* offset to replacement instruction */
u16 cpufeature; /* cpufeature bit set for replacement */
u8 orig_len; /* size of original instruction(s) */
u8 alt_len; /* size of new instruction(s), <= orig_len */
};
typedef void (*alternative_cb_t)(struct alt_instr *alt,
__le32 *origptr, __le32 *updptr, int nr_inst);
void __init apply_boot_alternatives(void);
void __init apply_alternatives_all(void);
bool alternative_is_applied(u16 cpufeature);
#ifdef CONFIG_MODULES
void apply_alternatives_module(void *start, size_t length);
#else
static inline void apply_alternatives_module(void *start, size_t length) { }
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ASM_ALTERNATIVE_H */
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