/* SPDX-License-Identifier: GPL-2.0-only *//* * Generic arch dependent fprobe macros. */#ifndef __ASM_GENERIC_FPROBE_H__#define __ASM_GENERIC_FPROBE_H__ #include <linux/bits.h> #ifdef CONFIG_64BIT/* * Encoding the size and the address of fprobe into one 64bit entry. * The 32bit architectures should use 2 entries to store those info. */ #define ARCH_DEFINE_ENCODE_FPROBE_HEADER #define FPROBE_HEADER_MSB_SIZE_SHIFT (BITS_PER_LONG - FPROBE_DATA_SIZE_BITS)#define FPROBE_HEADER_MSB_MASK					\	GENMASK(FPROBE_HEADER_MSB_SIZE_SHIFT - 1, 0) /* * By default, this expects the MSBs in the address of kprobe is 0xf. * If any arch needs another fixed pattern (e.g. s390 is zero filled), * override this. */#define FPROBE_HEADER_MSB_PATTERN				\	GENMASK(BITS_PER_LONG - 1, FPROBE_HEADER_MSB_SIZE_SHIFT) #define arch_fprobe_header_encodable(fp)			\	(((unsigned long)(fp) & ~FPROBE_HEADER_MSB_MASK) ==	\	 FPROBE_HEADER_MSB_PATTERN) #define arch_encode_fprobe_header(fp, size)			\	(((unsigned long)(fp) & FPROBE_HEADER_MSB_MASK) |	\	 ((unsigned long)(size) << FPROBE_HEADER_MSB_SIZE_SHIFT)) #define arch_decode_fprobe_header_size(val)			\	((unsigned long)(val) >> FPROBE_HEADER_MSB_SIZE_SHIFT) #define arch_decode_fprobe_header_fp(val)					\	((struct fprobe *)(((unsigned long)(val) & FPROBE_HEADER_MSB_MASK) |	\			   FPROBE_HEADER_MSB_PATTERN))#endif /* CONFIG_64BIT */ #endif /* __ASM_GENERIC_FPROBE_H__ */