vdso.h (872B)
1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * Copyright (C) 2012 ARM Limited 4 * Copyright (C) 2014 Regents of the University of California 5 * Copyright (C) 2017 SiFive 6 */ 7 8#ifndef _ASM_RISCV_VDSO_H 9#define _ASM_RISCV_VDSO_H 10 11/* 12 * All systems with an MMU have a VDSO, but systems without an MMU don't 13 * support shared libraries and therefor don't have one. 14 */ 15#ifdef CONFIG_MMU 16 17#define __VVAR_PAGES 2 18 19#ifndef __ASSEMBLY__ 20#include <generated/vdso-offsets.h> 21 22#define VDSO_SYMBOL(base, name) \ 23 (void __user *)((unsigned long)(base) + __vdso_##name##_offset) 24 25#ifdef CONFIG_COMPAT 26#include <generated/compat_vdso-offsets.h> 27 28#define COMPAT_VDSO_SYMBOL(base, name) \ 29 (void __user *)((unsigned long)(base) + compat__vdso_##name##_offset) 30 31#endif /* CONFIG_COMPAT */ 32 33#endif /* !__ASSEMBLY__ */ 34 35#endif /* CONFIG_MMU */ 36 37#endif /* _ASM_RISCV_VDSO_H */