arch/arm/include/asm/traps.h

   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
  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
  28 static inline int __in_irqentry_text(unsigned long ptr)
  29 {
  30         return 0;
  31 }
  32 #endif
  33
  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