1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * arch/arm64/kernel/probes/decode-insn.h
 4 *
 5 * Copyright (C) 2013 Linaro Limited.
 6 */
 7
 8#ifndef _ARM_KERNEL_KPROBES_ARM64_H
 9#define _ARM_KERNEL_KPROBES_ARM64_H
10
11#include <asm/kprobes.h>
12
13/*
14 * ARM strongly recommends a limit of 128 bytes between LoadExcl and
15 * StoreExcl instructions in a single thread of execution. So keep the
16 * max atomic context size as 32.
17 */
18#define MAX_ATOMIC_CONTEXT_SIZE	(128 / sizeof(kprobe_opcode_t))
19
20enum probe_insn {
21	INSN_REJECTED,
22	INSN_GOOD_NO_SLOT,
23	INSN_GOOD,
24};
25
26#ifdef CONFIG_KPROBES
27enum probe_insn __kprobes
28arm_kprobe_decode_insn(kprobe_opcode_t *addr, struct arch_specific_insn *asi);
29#endif
30enum probe_insn __kprobes
31arm_probe_decode_insn(probe_opcode_t insn, struct arch_probe_insn *asi);
32
33#endif /* _ARM_KERNEL_KPROBES_ARM64_H */