err.no Git - linux-2.6/blob - arch/alpha/mm/extable.c

   1 /*
   2  * linux/arch/alpha/mm/extable.c
   3  */
   4
   5 #include <linux/module.h>
   6 #include <asm/uaccess.h>
   7
   8 void sort_extable(struct exception_table_entry *start,
   9                   struct exception_table_entry *finish)
  10 {
  11 }
  12
  13 const struct exception_table_entry *
  14 search_extable(const struct exception_table_entry *first,
  15                const struct exception_table_entry *last,
  16                unsigned long value)
  17 {
  18         while (first <= last) {
  19                 const struct exception_table_entry *mid;
  20                 unsigned long mid_value;
  21
  22                 mid = (last - first) / 2 + first;
  23                 mid_value = (unsigned long)&mid->insn + mid->insn;
  24                 if (mid_value == value)
  25                         return mid;
  26                 else if (mid_value < value)
  27                         first = mid+1;
  28                 else
  29                         last = mid-1;
  30         }
  31
  32         return NULL;
  33 }