1/*
2 * arch/arm/kernel/kprobes.h
3 *
4 * Copyright (C) 2011 Jon Medhurst <tixy@yxit.co.uk>.
5 *
6 * Some contents moved here from arch/arm/include/asm/kprobes.h which is
7 * Copyright (C) 2006, 2007 Motorola Inc.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16 * General Public License for more details.
17 */
18
19#ifndef _ARM_KERNEL_KPROBES_H
20#define _ARM_KERNEL_KPROBES_H
21
22#include <asm/kprobes.h>
23#include "../decode.h"
24
25/*
26 * These undefined instructions must be unique and
27 * reserved solely for kprobes' use.
28 */
29#define KPROBE_ARM_BREAKPOINT_INSTRUCTION	0x07f001f8
30#define KPROBE_THUMB16_BREAKPOINT_INSTRUCTION	0xde18
31#define KPROBE_THUMB32_BREAKPOINT_INSTRUCTION	0xf7f0a018
32
33extern void kprobes_remove_breakpoint(void *addr, unsigned int insn);
34
35enum probes_insn __kprobes
36kprobe_decode_ldmstm(kprobe_opcode_t insn, struct arch_probes_insn *asi,
37		const struct decode_header *h);
38
39typedef enum probes_insn (kprobe_decode_insn_t)(probes_opcode_t,
40						struct arch_probes_insn *,
41						bool,
42						const union decode_action *,
43						const struct decode_checker *[]);
44
45#ifdef CONFIG_THUMB2_KERNEL
46
47extern const union decode_action kprobes_t32_actions[];
48extern const union decode_action kprobes_t16_actions[];
49extern const struct decode_checker *kprobes_t32_checkers[];
50extern const struct decode_checker *kprobes_t16_checkers[];
51#else /* !CONFIG_THUMB2_KERNEL */
52
53extern const union decode_action kprobes_arm_actions[];
54extern const struct decode_checker *kprobes_arm_checkers[];
55
56#endif
57
58#endif /* _ARM_KERNEL_KPROBES_H */
59