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/export.h>
  12 #include <linux/extable.h>
  13 #include <linux/uaccess.h>
  14
  15 int fixup_exception(struct pt_regs *regs)
  16 {
  17         const struct exception_table_entry *fixup;
  18
  19         fixup = search_exception_tables(instruction_pointer(regs));
  20         if (fixup) {
  21                 regs->ret = fixup->fixup;
  22
  23                 return 1;
  24         }
  25
  26         return 0;
  27 }
  28
  29 #ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
  30
  31 long arc_copy_from_user_noinline(void *to, const void __user *from,
  32                 unsigned long n)
  33 {
  34         return __arc_copy_from_user(to, from, n);
  35 }
  36 EXPORT_SYMBOL(arc_copy_from_user_noinline);
  37
  38 long arc_copy_to_user_noinline(void __user *to, const void *from,
  39                 unsigned long n)
  40 {
  41         return __arc_copy_to_user(to, from, n);
  42 }
  43 EXPORT_SYMBOL(arc_copy_to_user_noinline);
  44
  45 unsigned long arc_clear_user_noinline(void __user *to,
  46                 unsigned long n)
  47 {
  48         return __arc_clear_user(to, n);
  49 }
  50 EXPORT_SYMBOL(arc_clear_user_noinline);
  51
  52 long arc_strncpy_from_user_noinline(char *dst, const char __user *src,
  53                 long count)
  54 {
  55         return __arc_strncpy_from_user(dst, src, count);
  56 }
  57 EXPORT_SYMBOL(arc_strncpy_from_user_noinline);
  58
  59 long arc_strnlen_user_noinline(const char __user *src, long n)
  60 {
  61         return __arc_strnlen_user(src, n);
  62 }
  63 EXPORT_SYMBOL(arc_strnlen_user_noinline);
  64 #endif