diff options
Diffstat (limited to 'arch/unicore32/include/asm/uaccess.h')
| -rw-r--r-- | arch/unicore32/include/asm/uaccess.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/unicore32/include/asm/uaccess.h b/arch/unicore32/include/asm/uaccess.h new file mode 100644 index 000000000000..2acda503a6d9 --- /dev/null +++ b/arch/unicore32/include/asm/uaccess.h @@ -0,0 +1,47 @@ +/* + * linux/arch/unicore32/include/asm/uaccess.h + * + * Code specific to PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2010 GUAN Xue-tao + * + * 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. + */ +#ifndef __UNICORE_UACCESS_H__ +#define __UNICORE_UACCESS_H__ + +#include <linux/thread_info.h> +#include <linux/errno.h> + +#include <asm/memory.h> +#include <asm/system.h> + +#define __copy_from_user __copy_from_user +#define __copy_to_user __copy_to_user +#define __strncpy_from_user __strncpy_from_user +#define __strnlen_user __strnlen_user +#define __clear_user __clear_user + +#define __kernel_ok (segment_eq(get_fs(), KERNEL_DS)) +#define __user_ok(addr, size) (((size) <= TASK_SIZE) \ + && ((addr) <= TASK_SIZE - (size))) +#define __access_ok(addr, size) (__kernel_ok || __user_ok((addr), (size))) + +extern unsigned long __must_check +__copy_from_user(void *to, const void __user *from, unsigned long n); +extern unsigned long __must_check +__copy_to_user(void __user *to, const void *from, unsigned long n); +extern unsigned long __must_check +__clear_user(void __user *addr, unsigned long n); +extern unsigned long __must_check +__strncpy_from_user(char *to, const char __user *from, unsigned long count); +extern unsigned long +__strnlen_user(const char __user *s, long n); + +#include <asm-generic/uaccess.h> + +extern int fixup_exception(struct pt_regs *regs); + +#endif /* __UNICORE_UACCESS_H__ */ |