1. 根目录:
2. arch
3. arc
4. mm
5. extable.c

/*
 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Borrowed heavily from MIPS
 */

#include <linux/module.h>
#include <linux/uaccess.h>

int fixup_exception(struct pt_regs *regs)
{
	const struct exception_table_entry *fixup;

	fixup = search_exception_tables(instruction_pointer(regs));
	if (fixup) {
		regs->ret = fixup->fixup;

		return 1;
	}

	return 0;
}

#ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE

long arc_copy_from_user_noinline(void *to, const void __user *from,
		unsigned long n)
{
	return __arc_copy_from_user(to, from, n);
}
EXPORT_SYMBOL(arc_copy_from_user_noinline);

long arc_copy_to_user_noinline(void __user *to, const void *from,
		unsigned long n)
{
	return __arc_copy_to_user(to, from, n);
}
EXPORT_SYMBOL(arc_copy_to_user_noinline);

unsigned long arc_clear_user_noinline(void __user *to,
		unsigned long n)
{
	return __arc_clear_user(to, n);
}
EXPORT_SYMBOL(arc_clear_user_noinline);

long arc_strncpy_from_user_noinline(char *dst, const char __user *src,
		long count)
{
	return __arc_strncpy_from_user(dst, src, count);
}
EXPORT_SYMBOL(arc_strncpy_from_user_noinline);

long arc_strnlen_user_noinline(const char __user *src, long n)
{
	return __arc_strnlen_user(src, n);
}
EXPORT_SYMBOL(arc_strnlen_user_noinline);
#endif