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kernel/linux-rt-4.4.41/arch/arm/include/asm/traps.h 1.25 KB
5113f6f70   김현기   kernel add
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  #ifndef _ASMARM_TRAP_H
  #define _ASMARM_TRAP_H
  
  #include <linux/list.h>
  
  struct pt_regs;
  struct task_struct;
  
  struct undef_hook {
  	struct list_head node;
  	u32 instr_mask;
  	u32 instr_val;
  	u32 cpsr_mask;
  	u32 cpsr_val;
  	int (*fn)(struct pt_regs *regs, unsigned int instr);
  };
  
  void register_undef_hook(struct undef_hook *hook);
  void unregister_undef_hook(struct undef_hook *hook);
  
  #ifdef CONFIG_FUNCTION_GRAPH_TRACER
  static inline int __in_irqentry_text(unsigned long ptr)
  {
  	extern char __irqentry_text_start[];
  	extern char __irqentry_text_end[];
  
  	return ptr >= (unsigned long)&__irqentry_text_start &&
  	       ptr < (unsigned long)&__irqentry_text_end;
  }
  #else
  static inline int __in_irqentry_text(unsigned long ptr)
  {
  	return 0;
  }
  #endif
  
  static inline int in_exception_text(unsigned long ptr)
  {
  	extern char __exception_text_start[];
  	extern char __exception_text_end[];
  	int in;
  
  	in = ptr >= (unsigned long)&__exception_text_start &&
  	     ptr < (unsigned long)&__exception_text_end;
  
  	return in ? : __in_irqentry_text(ptr);
  }
  
  extern void __init early_trap_init(void *);
  extern void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame);
  extern void ptrace_break(struct task_struct *tsk, struct pt_regs *regs);
  
  extern void *vectors_page;
  
  #endif