1/*
2 * Based on arch/arm/include/asm/traps.h
3 *
4 * Copyright (C) 2012 ARM Ltd.
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
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
17 */
18#ifndef __ASM_TRAP_H
19#define __ASM_TRAP_H
20
21#include <linux/list.h>
22
23struct pt_regs;
24
25struct undef_hook {
26	struct list_head node;
27	u32 instr_mask;
28	u32 instr_val;
29	u64 pstate_mask;
30	u64 pstate_val;
31	int (*fn)(struct pt_regs *regs, u32 instr);
32};
33
34void register_undef_hook(struct undef_hook *hook);
35void unregister_undef_hook(struct undef_hook *hook);
36
37static inline int in_exception_text(unsigned long ptr)
38{
39	extern char __exception_text_start[];
40	extern char __exception_text_end[];
41
42	return ptr >= (unsigned long)&__exception_text_start &&
43	       ptr < (unsigned long)&__exception_text_end;
44}
45
46#endif
47