1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * User memory access support for Hexagon
4  *
5  * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
6  */
7 
8 #ifndef _ASM_UACCESS_H
9 #define _ASM_UACCESS_H
10 /*
11  * User space memory access functions
12  */
13 #include <asm/sections.h>
14 
15 /*
16  * When a kernel-mode page fault is taken, the faulting instruction
17  * address is checked against a table of exception_table_entries.
18  * Each entry is a tuple of the address of an instruction that may
19  * be authorized to fault, and the address at which execution should
20  * be resumed instead of the faulting instruction, so as to effect
21  * a workaround.
22  */
23 
24 /*  Assembly somewhat optimized copy routines  */
25 unsigned long raw_copy_from_user(void *to, const void __user *from,
26 				     unsigned long n);
27 unsigned long raw_copy_to_user(void __user *to, const void *from,
28 				   unsigned long n);
29 #define INLINE_COPY_FROM_USER
30 #define INLINE_COPY_TO_USER
31 
32 __kernel_size_t __clear_user_hexagon(void __user *dest, unsigned long count);
33 #define __clear_user(a, s) __clear_user_hexagon((a), (s))
34 
35 #include <asm-generic/uaccess.h>
36 
37 
38 #endif
39