linux/arch/x86/kernel/kprobes/common.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __X86_KERNEL_KPROBES_COMMON_H
#define __X86_KERNEL_KPROBES_COMMON_H

/* Kprobes and Optprobes common header */

#include <asm/asm.h>
#include <asm/frame.h>
#include <asm/insn.h>

#ifdef CONFIG_X86_64

#define SAVE_REGS_STRING …

#define RESTORE_REGS_STRING …
#else

#define SAVE_REGS_STRING …

#define RESTORE_REGS_STRING …
#endif

/* Ensure if the instruction can be boostable */
extern bool can_boost(struct insn *insn, void *orig_addr);
/* Recover instruction if given address is probed */
extern unsigned long recover_probed_instruction(kprobe_opcode_t *buf,
					 unsigned long addr);
/*
 * Copy an instruction and adjust the displacement if the instruction
 * uses the %rip-relative addressing mode.
 */
extern int __copy_instruction(u8 *dest, u8 *src, u8 *real, struct insn *insn);

/* Generate a relative-jump/call instruction */
extern void synthesize_reljump(void *dest, void *from, void *to);
extern void synthesize_relcall(void *dest, void *from, void *to);

#ifdef	CONFIG_OPTPROBES
extern int setup_detour_execution(struct kprobe *p, struct pt_regs *regs, int reenter);
extern unsigned long __recover_optprobed_insn(kprobe_opcode_t *buf, unsigned long addr);
#else	/* !CONFIG_OPTPROBES */
static inline int setup_detour_execution(struct kprobe *p, struct pt_regs *regs, int reenter)
{
	return 0;
}
static inline unsigned long __recover_optprobed_insn(kprobe_opcode_t *buf, unsigned long addr)
{
	return addr;
}
#endif

#endif