56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 ARM Limited
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* Copyright (C) 2014 Regents of the University of California
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* Copyright (C) 2017 SiFive
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*/
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#ifndef _ASM_RISCV_VDSO_H
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#define _ASM_RISCV_VDSO_H
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/*
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* All systems with an MMU have a VDSO, but systems without an MMU don't
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* support shared libraries and therefore don't have one.
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*/
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#ifdef CONFIG_MMU
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#define __VVAR_PAGES 2
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#ifndef __ASSEMBLY__
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#ifdef CONFIG_VDSO64
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#include <generated/vdso64-offsets.h>
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#define VDSO64_SYMBOL(base, name) \
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(void __user *)((unsigned long)(base) + rv64__vdso_##name##_offset)
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extern char vdso64_start[], vdso64_end[];
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#endif /* CONFIG_VDSO64 */
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#ifdef CONFIG_VDSO32
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#include <generated/vdso32-offsets.h>
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#define VDSO32_SYMBOL(base, name) \
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(void __user *)((unsigned long)(base) + rv32__vdso_##name##_offset)
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extern char vdso32_start[], vdso32_end[];
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#endif /* CONFIG_VDSO32 */
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#ifdef CONFIG_VDSO64ILP32
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#include <generated/vdso64ilp32-offsets.h>
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#define VDSO64ILP32_SYMBOL(base, name) \
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(void __user *)((unsigned long)(base) + rv64ilp32__vdso_##name##_offset)
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extern char vdso64ilp32_start[], vdso64ilp32_end[];
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#endif /* CONFIG_VDSO64ILP32 */
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#endif /* !__ASSEMBLY__ */
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#endif /* CONFIG_MMU */
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#endif /* _ASM_RISCV_VDSO_H */
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