36 lines
1013 B
C
36 lines
1013 B
C
/* 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 */
|