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Diffstat (limited to 'arch/hexagon/include/asm/uaccess.h')
| -rw-r--r-- | arch/hexagon/include/asm/uaccess.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/hexagon/include/asm/uaccess.h b/arch/hexagon/include/asm/uaccess.h new file mode 100644 index 0000000000..bff77efc0d --- /dev/null +++ b/arch/hexagon/include/asm/uaccess.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * User memory access support for Hexagon + * + * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved. + */ + +#ifndef _ASM_UACCESS_H +#define _ASM_UACCESS_H +/* + * User space memory access functions + */ +#include <asm/sections.h> + +/* + * When a kernel-mode page fault is taken, the faulting instruction + * address is checked against a table of exception_table_entries. + * Each entry is a tuple of the address of an instruction that may + * be authorized to fault, and the address at which execution should + * be resumed instead of the faulting instruction, so as to effect + * a workaround. + */ + +/* Assembly somewhat optimized copy routines */ +unsigned long raw_copy_from_user(void *to, const void __user *from, + unsigned long n); +unsigned long raw_copy_to_user(void __user *to, const void *from, + unsigned long n); +#define INLINE_COPY_FROM_USER +#define INLINE_COPY_TO_USER + +__kernel_size_t __clear_user_hexagon(void __user *dest, unsigned long count); +#define __clear_user(a, s) __clear_user_hexagon((a), (s)) + +#include <asm-generic/uaccess.h> + + +#endif |