1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2012 ARM Limited
4 * Copyright (C) 2014 Regents of the University of California
5 * Copyright (C) 2017 SiFive
8 #ifndef _ASM_RISCV_VDSO_H
9 #define _ASM_RISCV_VDSO_H
13 * All systems with an MMU have a VDSO, but systems without an MMU don't
14 * support shared libraries and therefor don't have one.
18 #include <linux/types.h>
19 #include <generated/vdso-offsets.h>
21 #ifndef CONFIG_GENERIC_TIME_VSYSCALL
26 #define VDSO_SYMBOL(base, name) \
27 (void __user *)((unsigned long)(base) + __vdso_##name##_offset)
29 #endif /* CONFIG_MMU */
31 asmlinkage long sys_riscv_flush_icache(uintptr_t, uintptr_t, uintptr_t);
33 #endif /* _ASM_RISCV_VDSO_H */