uaccess.h (90997c128049c75a74bd9ebb852b17e359066541) uaccess.h (12700c17fc286149324f92d6d380bc48e43f253d)
1/*
2 * User space memory access functions for Nios II
3 *
4 * Copyright (C) 2010-2011, Tobias Klauser <tklauser@distanz.ch>
5 * Copyright (C) 2009, Wind River Systems Inc
6 * Implemented by fredrik.markstrom@gmail.com and ivarholmqvist@gmail.com
7 *
8 * This file is subject to the terms and conditions of the GNU General Public

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25#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
26#define USER_DS MAKE_MM_SEG(0x80000000UL)
27#define KERNEL_DS MAKE_MM_SEG(0)
28
29
30#define get_fs() (current_thread_info()->addr_limit)
31#define set_fs(seg) (current_thread_info()->addr_limit = (seg))
32
1/*
2 * User space memory access functions for Nios II
3 *
4 * Copyright (C) 2010-2011, Tobias Klauser <tklauser@distanz.ch>
5 * Copyright (C) 2009, Wind River Systems Inc
6 * Implemented by fredrik.markstrom@gmail.com and ivarholmqvist@gmail.com
7 *
8 * This file is subject to the terms and conditions of the GNU General Public

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25#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
26#define USER_DS MAKE_MM_SEG(0x80000000UL)
27#define KERNEL_DS MAKE_MM_SEG(0)
28
29
30#define get_fs() (current_thread_info()->addr_limit)
31#define set_fs(seg) (current_thread_info()->addr_limit = (seg))
32
33#define uaccess_kernel() (get_fs().seg == KERNEL_DS.seg)
33#include <asm-generic/access_ok.h>
34
34
35#define __access_ok(addr, len) \
36 (((signed long)(((long)get_fs().seg) & \
37 ((long)(addr) | (((long)(addr)) + (len)) | (len)))) == 0)
38
39#define access_ok(addr, len) \
40 likely(__access_ok((unsigned long)(addr), (unsigned long)(len)))
41
42# define __EX_TABLE_SECTION ".section __ex_table,\"a\"\n"
43
35# define __EX_TABLE_SECTION ".section __ex_table,\"a\"\n"
36
44#define user_addr_max() (uaccess_kernel() ? ~0UL : TASK_SIZE)
45
46/*
47 * Zero Userspace
48 */
49
50static inline unsigned long __must_check __clear_user(void __user *to,
51 unsigned long n)
52{
53 __asm__ __volatile__ (

--- 157 unchanged lines hidden --- 		37/*
38 * Zero Userspace
39 */
40
41static inline unsigned long __must_check __clear_user(void __user *to,
42 unsigned long n)
43{
44 __asm__ __volatile__ (

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