/*
 * Based on arch/arm/include/asm/system_misc.h
 *
 * Copyright (C) 2012 ARM Ltd.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef __ASM_SYSTEM_MISC_H
#define __ASM_SYSTEM_MISC_H

#ifndef __ASSEMBLY__

#include <linux/compiler.h>
#include <linux/linkage.h>
#include <linux/irqflags.h>
#include <linux/signal.h>
#include <linux/ratelimit.h>
#include <linux/reboot.h>

struct pt_regs;

void die(const char *msg, struct pt_regs *regs, int err);

struct siginfo;
void arm64_notify_die(const char *str, struct pt_regs *regs,
		      struct siginfo *info, int err);

void hook_debug_fault_code(int nr, int (*fn)(unsigned long, unsigned int,
					     struct pt_regs *),
			   int sig, int code, const char *name);

struct mm_struct;
extern void show_pte(struct mm_struct *mm, unsigned long addr);
extern void __show_regs(struct pt_regs *);

extern void (*arm_pm_restart)(enum reboot_mode reboot_mode, const char *cmd);

#define show_unhandled_signals_ratelimited()				\
({									\
	static DEFINE_RATELIMIT_STATE(_rs,				\
				      DEFAULT_RATELIMIT_INTERVAL,	\
				      DEFAULT_RATELIMIT_BURST);		\
	bool __show_ratelimited = false;				\
	if (show_unhandled_signals && __ratelimit(&_rs))		\
		__show_ratelimited = true;				\
	__show_ratelimited;						\
})

#define UDBG_UNDEFINED	(1 << 0)
#define UDBG_SYSCALL	(1 << 1)
#define UDBG_BADABORT	(1 << 2)
#define UDBG_SEGV	(1 << 3)
#define UDBG_BUS	(1 << 4)

#endif	/* __ASSEMBLY__ */

#endif	/* __ASM_SYSTEM_MISC_H */