arm64: Kprobes with single stepping support
[deliverable/linux.git] / arch / arm64 / include / asm / kprobes.h
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1/*
2 * arch/arm64/include/asm/kprobes.h
3 *
4 * Copyright (C) 2013 Linaro Limited
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 */
15
16#ifndef _ARM_KPROBES_H
17#define _ARM_KPROBES_H
18
19#include <linux/types.h>
20#include <linux/ptrace.h>
21#include <linux/percpu.h>
22
23#define __ARCH_WANT_KPROBES_INSN_SLOT
24#define MAX_INSN_SIZE 1
25#define MAX_STACK_SIZE 128
26
27#define flush_insn_slot(p) do { } while (0)
28#define kretprobe_blacklist_size 0
29
30#include <asm/probes.h>
31
32struct prev_kprobe {
33 struct kprobe *kp;
34 unsigned int status;
35};
36
37/* Single step context for kprobe */
38struct kprobe_step_ctx {
39 unsigned long ss_pending;
40 unsigned long match_addr;
41};
42
43/* per-cpu kprobe control block */
44struct kprobe_ctlblk {
45 unsigned int kprobe_status;
46 unsigned long saved_irqflag;
47 struct prev_kprobe prev_kprobe;
48 struct kprobe_step_ctx ss_ctx;
49 struct pt_regs jprobe_saved_regs;
50 char jprobes_stack[MAX_STACK_SIZE];
51};
52
53void arch_remove_kprobe(struct kprobe *);
54int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr);
55int kprobe_exceptions_notify(struct notifier_block *self,
56 unsigned long val, void *data);
57int kprobe_breakpoint_handler(struct pt_regs *regs, unsigned int esr);
58int kprobe_single_step_handler(struct pt_regs *regs, unsigned int esr);
59
60#endif /* _ARM_KPROBES_H */
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