1 #ifndef _ASMARM_TRAP_H
2 #define _ASMARM_TRAP_H
3 
4 #include <linux/list.h>
5 
6 struct undef_hook {
7 	struct list_head node;
8 	u32 instr_mask;
9 	u32 instr_val;
10 	u32 cpsr_mask;
11 	u32 cpsr_val;
12 	int (*fn)(struct pt_regs *regs, unsigned int instr);
13 };
14 
15 void register_undef_hook(struct undef_hook *hook);
16 void unregister_undef_hook(struct undef_hook *hook);
17 
18 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
__in_irqentry_text(unsigned long ptr)19 static inline int __in_irqentry_text(unsigned long ptr)
20 {
21 	extern char __irqentry_text_start[];
22 	extern char __irqentry_text_end[];
23 
24 	return ptr >= (unsigned long)&__irqentry_text_start &&
25 	       ptr < (unsigned long)&__irqentry_text_end;
26 }
27 #else
__in_irqentry_text(unsigned long ptr)28 static inline int __in_irqentry_text(unsigned long ptr)
29 {
30 	return 0;
31 }
32 #endif
33 
in_exception_text(unsigned long ptr)34 static inline int in_exception_text(unsigned long ptr)
35 {
36 	extern char __exception_text_start[];
37 	extern char __exception_text_end[];
38 	int in;
39 
40 	in = ptr >= (unsigned long)&__exception_text_start &&
41 	     ptr < (unsigned long)&__exception_text_end;
42 
43 	return in ? : __in_irqentry_text(ptr);
44 }
45 
46 extern void __init early_trap_init(void);
47 extern void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame);
48 extern void ptrace_break(struct task_struct *tsk, struct pt_regs *regs);
49 
50 extern void *vectors_page;
51 
52 #endif
53