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 */
29 * This undefined instruction must be unique and
30 * reserved solely for kprobes' use.
32 #define KPROBE_BREAKPOINT_INSTRUCTION 0xe7f001f8
34 #define regs_return_value(regs) ((regs)->ARM_r0)
35 #define flush_insn_slot(p) do { } while (0)
36 #define kretprobe_blacklist_size 0
38 typedef u32 kprobe_opcode_t;
41 typedef void (kprobe_insn_handler_t)(struct kprobe *, struct pt_regs *);
43 /* Architecture specific copy of original instruction. */
44 struct arch_specific_insn {
45 kprobe_opcode_t *insn;
46 kprobe_insn_handler_t *insn_handler;
54 /* per-cpu kprobe control block */
55 struct kprobe_ctlblk {
56 unsigned int kprobe_status;
57 struct prev_kprobe prev_kprobe;
58 struct pt_regs jprobe_saved_regs;
59 char jprobes_stack[MAX_STACK_SIZE];
62 void arch_remove_kprobe(struct kprobe *);
64 int kprobe_trap_handler(struct pt_regs *regs, unsigned int instr);
65 int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr);
66 int kprobe_exceptions_notify(struct notifier_block *self,
67 unsigned long val, void *data);
75 enum kprobe_insn arm_kprobe_decode_insn(kprobe_opcode_t,
76 struct arch_specific_insn *);
77 void __init arm_kprobe_decode_init(void);
79 #endif /* _ARM_KPROBES_H */