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
20 enum probe_insn {
21 INSN_REJECTED,
22 INSN_GOOD_NO_SLOT,
23 INSN_GOOD,
24 };
25
26 #ifdef CONFIG_KPROBES
27 enum probe_insn __kprobes
28 arm_kprobe_decode_insn(kprobe_opcode_t *addr, struct arch_specific_insn *asi);
29 #endif
30 enum probe_insn __kprobes
31 arm_probe_decode_insn(probe_opcode_t insn, struct arch_probe_insn *asi);
32
33 #endif /* _ARM_KERNEL_KPROBES_ARM64_H */
34
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