/*
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
*
* 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.
*/

#ifndef _ARC_KPROBES_H
#define _ARC_KPROBES_H

#ifdef CONFIG_KPROBES

typedef u16 kprobe_opcode_t;

#define UNIMP_S_INSTRUCTION 0x79e0
#define TRAP_S_2_INSTRUCTION 0x785e

#define MAX_INSN_SIZE 8
#define MAX_STACK_SIZE 64

struct arch_specific_insn {
int is_short;
kprobe_opcode_t *t1_addr, *t2_addr;
kprobe_opcode_t t1_opcode, t2_opcode;
};

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

#define kretprobe_blacklist_size 0

struct kprobe;

void arch_remove_kprobe(struct kprobe *p);

int kprobe_exceptions_notify(struct notifier_block *self,
unsigned long val, void *data);

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

struct kprobe_ctlblk {
unsigned int kprobe_status;
struct pt_regs jprobe_saved_regs;
char jprobes_stack[MAX_STACK_SIZE];
struct prev_kprobe prev_kprobe;
};

int kprobe_fault_handler(struct pt_regs *regs, unsigned long cause);
void kretprobe_trampoline(void);
void trap_is_kprobe(unsigned long address, struct pt_regs *regs);
#else
static void trap_is_kprobe(unsigned long address, struct pt_regs *regs)
{
}
#endif

#endif