arch/arc/mm/extable.c

   1 /*
   2  * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * Borrowed heavily from MIPS
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/uaccess.h>
  13
  14 int fixup_exception(struct pt_regs *regs)
  15 {
  16         const struct exception_table_entry *fixup;
  17
  18         fixup = search_exception_tables(instruction_pointer(regs));
  19         if (fixup) {
  20                 regs->ret = fixup->fixup;
  21
  22                 return 1;
  23         }
  24
  25         return 0;
  26 }
  27
  28 #ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
  29
  30 long arc_copy_from_user_noinline(void *to, const void __user *from,
  31                 unsigned long n)
  32 {
  33         return __arc_copy_from_user(to, from, n);
  34 }
  35 EXPORT_SYMBOL(arc_copy_from_user_noinline);
  36
  37 long arc_copy_to_user_noinline(void __user *to, const void *from,
  38                 unsigned long n)
  39 {
  40         return __arc_copy_to_user(to, from, n);
  41 }
  42 EXPORT_SYMBOL(arc_copy_to_user_noinline);
  43
  44 unsigned long arc_clear_user_noinline(void __user *to,
  45                 unsigned long n)
  46 {
  47         return __arc_clear_user(to, n);
  48 }
  49 EXPORT_SYMBOL(arc_clear_user_noinline);
  50
  51 long arc_strncpy_from_user_noinline(char *dst, const char __user *src,
  52                 long count)
  53 {
  54         return __arc_strncpy_from_user(dst, src, count);
  55 }
  56 EXPORT_SYMBOL(arc_strncpy_from_user_noinline);
  57
  58 long arc_strnlen_user_noinline(const char __user *src, long n)
  59 {
  60         return __arc_strnlen_user(src, n);
  61 }
  62 EXPORT_SYMBOL(arc_strnlen_user_noinline);
  63 #endif