LXR linux/arch/arm/include/asm/traps.h

   1#ifndef _ASMARM_TRAP_H
   2#define _ASMARM_TRAP_H
   3
   4#include <linux/list.h>
   5
   6struct pt_regs;
   7struct task_struct;
   8
   9struct 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
  18void register_undef_hook(struct undef_hook *hook);
  19void unregister_undef_hook(struct undef_hook *hook);
  20
  21#ifdef CONFIG_FUNCTION_GRAPH_TRACER
  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
  31static inline int __in_irqentry_text(unsigned long ptr)
  32{
  33        return 0;
  34}
  35#endif
  36
  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
  49extern void __init early_trap_init(void *);
  50extern void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame);
  51extern void ptrace_break(struct task_struct *tsk, struct pt_regs *regs);
  52
  53extern void *vectors_page;
  54
  55#endif
  56