2 * include/asm-arm/kprobes.h
4 * Copyright (C) 2006, 2007 Motorola Inc.
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.
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.
16 #ifndef _ARM_KPROBES_H
17 #define _ARM_KPROBES_H
19 #include <linux/types.h>
20 #include <linux/ptrace.h>
21 #include <linux/percpu.h>
23 #define ARCH_SUPPORTS_KRETPROBES
24 #define __ARCH_WANT_KPROBES_INSN_SLOT
25 #define MAX_INSN_SIZE 2
26 #define MAX_STACK_SIZE 64 /* 32 would probably be OK */
28 #define regs_return_value(regs) ((regs)->ARM_r0)
29 #define flush_insn_slot(p) do { } while (0)
30 #define kretprobe_blacklist_size 0
32 typedef u32 kprobe_opcode_t;
35 typedef void (kprobe_insn_handler_t)(struct kprobe *, struct pt_regs *);
37 /* Architecture specific copy of original instruction. */
38 struct arch_specific_insn {
39 kprobe_opcode_t *insn;
40 kprobe_insn_handler_t *insn_handler;
48 /* per-cpu kprobe control block */
49 struct kprobe_ctlblk {
50 unsigned int kprobe_status;
51 struct prev_kprobe prev_kprobe;
52 struct pt_regs jprobe_saved_regs;
53 char jprobes_stack[MAX_STACK_SIZE];
56 void arch_remove_kprobe(struct kprobe *);
58 int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr);
59 int kprobe_exceptions_notify(struct notifier_block *self,
60 unsigned long val, void *data);
68 enum kprobe_insn arm_kprobe_decode_insn(kprobe_opcode_t,
69 struct arch_specific_insn *);
70 void __init arm_kprobe_decode_init(void);
72 #endif /* _ARM_KPROBES_H */