1 #ifndef _ASMARM_TRAP_H 2 #define _ASMARM_TRAP_H 3 4 #include <linux/list.h> 5 6 struct pt_regs; 7 struct task_struct; 8 9 struct undef_hook { 10 struct list_head node; 11 u32 instr_mask; 12 u32 instr_val; 13 u32 cpsr_mask; 14 u32 cpsr_val; 15 int (*fn)(struct pt_regs *regs, unsigned int instr); 16 }; 17 18 void register_undef_hook(struct undef_hook *hook); 19 void unregister_undef_hook(struct undef_hook *hook); 20 21 #ifdef CONFIG_FUNCTION_GRAPH_TRACER __in_irqentry_text(unsigned long ptr)22static inline int __in_irqentry_text(unsigned long ptr) 23 { 24 extern char __irqentry_text_start[]; 25 extern char __irqentry_text_end[]; 26 27 return ptr >= (unsigned long)&__irqentry_text_start && 28 ptr < (unsigned long)&__irqentry_text_end; 29 } 30 #else __in_irqentry_text(unsigned long ptr)31static inline int __in_irqentry_text(unsigned long ptr) 32 { 33 return 0; 34 } 35 #endif 36 in_exception_text(unsigned long ptr)37static inline int in_exception_text(unsigned long ptr) 38 { 39 extern char __exception_text_start[]; 40 extern char __exception_text_end[]; 41 int in; 42 43 in = ptr >= (unsigned long)&__exception_text_start && 44 ptr < (unsigned long)&__exception_text_end; 45 46 return in ? : __in_irqentry_text(ptr); 47 } 48 49 extern void __init early_trap_init(void *); 50 extern void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame); 51 extern void ptrace_break(struct task_struct *tsk, struct pt_regs *regs); 52 53 extern void *vectors_page; 54 55 #endif 56