1 /*
2  * Based on arch/arm/include/asm/system_misc.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_SYSTEM_MISC_H
19 #define __ASM_SYSTEM_MISC_H
20 
21 #ifndef __ASSEMBLY__
22 
23 #include <linux/compiler.h>
24 #include <linux/linkage.h>
25 #include <linux/irqflags.h>
26 #include <linux/signal.h>
27 #include <linux/ratelimit.h>
28 #include <linux/reboot.h>
29 
30 struct pt_regs;
31 
32 void die(const char *msg, struct pt_regs *regs, int err);
33 
34 struct siginfo;
35 void arm64_notify_die(const char *str, struct pt_regs *regs,
36 		      struct siginfo *info, int err);
37 
38 void hook_debug_fault_code(int nr, int (*fn)(unsigned long, unsigned int,
39 					     struct pt_regs *),
40 			   int sig, int code, const char *name);
41 
42 struct mm_struct;
43 extern void show_pte(struct mm_struct *mm, unsigned long addr);
44 extern void __show_regs(struct pt_regs *);
45 
46 extern void (*arm_pm_restart)(enum reboot_mode reboot_mode, const char *cmd);
47 
48 #define show_unhandled_signals_ratelimited()				\
49 ({									\
50 	static DEFINE_RATELIMIT_STATE(_rs,				\
51 				      DEFAULT_RATELIMIT_INTERVAL,	\
52 				      DEFAULT_RATELIMIT_BURST);		\
53 	bool __show_ratelimited = false;				\
54 	if (show_unhandled_signals && __ratelimit(&_rs))		\
55 		__show_ratelimited = true;				\
56 	__show_ratelimited;						\
57 })
58 
59 #define UDBG_UNDEFINED	(1 << 0)
60 #define UDBG_SYSCALL	(1 << 1)
61 #define UDBG_BADABORT	(1 << 2)
62 #define UDBG_SEGV	(1 << 3)
63 #define UDBG_BUS	(1 << 4)
64 
65 #endif	/* __ASSEMBLY__ */
66 
67 #endif	/* __ASM_SYSTEM_MISC_H */
68