aboutsummaryrefslogtreecommitdiff
path: root/arch/arm64/include/asm/kprobes.h
blob: b35d3b9d29fb18b5208d4097e615ebed8dbd5556 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
/*
 * arch/arm64/include/asm/kprobes.h
 *
 * Copyright (C) 2013 Linaro Limited
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

#ifndef _ARM_KPROBES_H
#define _ARM_KPROBES_H

#include <linux/types.h>
#include <linux/ptrace.h>
#include <linux/percpu.h>

#define __ARCH_WANT_KPROBES_INSN_SLOT
#define MAX_INSN_SIZE			1
#define MAX_STACK_SIZE			128

#define flush_insn_slot(p)		do { } while (0)
#define kretprobe_blacklist_size	0

#include <asm/probes.h>

struct prev_kprobe {
	struct kprobe *kp;
	unsigned int status;
};

/* Single step context for kprobe */
struct kprobe_step_ctx {
#define KPROBES_STEP_NONE	0x0
#define KPROBES_STEP_PENDING	0x1
	unsigned long ss_status;
	unsigned long match_addr;
};

/* per-cpu kprobe control block */
struct kprobe_ctlblk {
	unsigned int kprobe_status;
	unsigned long saved_irqflag;
	struct prev_kprobe prev_kprobe;
	struct kprobe_step_ctx ss_ctx;
	struct pt_regs jprobe_saved_regs;
	char jprobes_stack[MAX_STACK_SIZE];
};

void arch_remove_kprobe(struct kprobe *);
int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr);
int kprobe_exceptions_notify(struct notifier_block *self,
			     unsigned long val, void *data);

#endif /* _ARM_KPROBES_H */