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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2012 ARM Limited
* Copyright (C) 2014 Regents of the University of California
* Copyright (C) 2017 SiFive
*/
#ifndef _ASM_RISCV_VDSO_H
#define _ASM_RISCV_VDSO_H
#include <linux/types.h>
struct vdso_data {
};
/*
* The VDSO symbols are mapped into Linux so we can just use regular symbol
* addressing to get their offsets in userspace. The symbols are mapped at an
* offset of 0, but since the linker must support setting weak undefined
* symbols to the absolute address 0 it also happens to support other low
* addresses even when the code model suggests those low addresses would not
* otherwise be availiable.
*/
#define VDSO_SYMBOL(base, name) \
({ \
extern const char __vdso_##name[]; \
(void __user *)((unsigned long)(base) + __vdso_##name); \
})
asmlinkage long sys_riscv_flush_icache(uintptr_t, uintptr_t, uintptr_t);
#endif /* _ASM_RISCV_VDSO_H */