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Linux/arch/unicore32/include/asm/uaccess.h

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  1 /*
  2  * linux/arch/unicore32/include/asm/uaccess.h
  3  *
  4  * Code specific to PKUnity SoC and UniCore ISA
  5  *
  6  * Copyright (C) 2001-2010 GUAN Xue-tao
  7  *
  8  * This program is free software; you can redistribute it and/or modify
  9  * it under the terms of the GNU General Public License version 2 as
 10  * published by the Free Software Foundation.
 11  */
 12 #ifndef __UNICORE_UACCESS_H__
 13 #define __UNICORE_UACCESS_H__
 14 
 15 #include <linux/thread_info.h>
 16 #include <linux/errno.h>
 17 
 18 #include <asm/memory.h>
 19 
 20 #define __copy_from_user        __copy_from_user
 21 #define __copy_to_user          __copy_to_user
 22 #define __strncpy_from_user     __strncpy_from_user
 23 #define __strnlen_user          __strnlen_user
 24 #define __clear_user            __clear_user
 25 
 26 #define __kernel_ok             (segment_eq(get_fs(), KERNEL_DS))
 27 #define __user_ok(addr, size)   (((size) <= TASK_SIZE)                  \
 28                                 && ((addr) <= TASK_SIZE - (size)))
 29 #define __access_ok(addr, size) (__kernel_ok || __user_ok((addr), (size)))
 30 
 31 extern unsigned long __must_check
 32 __copy_from_user(void *to, const void __user *from, unsigned long n);
 33 extern unsigned long __must_check
 34 __copy_to_user(void __user *to, const void *from, unsigned long n);
 35 extern unsigned long __must_check
 36 __clear_user(void __user *addr, unsigned long n);
 37 extern unsigned long __must_check
 38 __strncpy_from_user(char *to, const char __user *from, unsigned long count);
 39 extern unsigned long
 40 __strnlen_user(const char __user *s, long n);
 41 
 42 #include <asm-generic/uaccess.h>
 43 
 44 extern int fixup_exception(struct pt_regs *regs);
 45 
 46 #endif /* __UNICORE_UACCESS_H__ */
 47 

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