GuanXuetao | 77c93b2 | 2011-02-26 18:49:26 +0800 | [diff] [blame] | 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> |
GuanXuetao | 77c93b2 | 2011-02-26 18:49:26 +0800 | [diff] [blame] | 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__ */ |