kprobes.h

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/*
 * arch/arm/include/asm/kprobes.h
 *
 * Copyright (C) 2006, 2007 Motorola Inc.
 *
 * 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           2
#define MAX_STACK_SIZE          64  /* 32 would probably be OK */

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

typedef u32 kprobe_opcode_t;

struct kprobe;
typedef void (kprobe_insn_handler_t)(struct kprobe *, struct pt_regs *);
typedef unsigned long (kprobe_check_cc)(unsigned long);
typedef void (kprobe_insn_singlestep_t)(struct kprobe *, struct pt_regs *);
typedef void (kprobe_insn_fn_t)(void);

/* Architecture specific copy of original instruction. */
struct arch_specific_insn {
    kprobe_opcode_t         *insn;
    kprobe_insn_handler_t       *insn_handler;
    kprobe_check_cc         *insn_check_cc;
    kprobe_insn_singlestep_t    *insn_singlestep;
    kprobe_insn_fn_t        *insn_fn;
};

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

/* per-cpu kprobe control block */
struct kprobe_ctlblk {
    unsigned int kprobe_status;
    struct prev_kprobe prev_kprobe;
    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 */