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 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
  22 static 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
  31 static inline int __in_irqentry_text(unsigned long ptr)
  32 {
  33         return 0;
  34 }
  35 #endif
  36
  37 static 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