blob: 0259bbc98e93a1e902ff20c5b3cdea0fbba4d2ce (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/* 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
/*
* All systems with an MMU have a VDSO, but systems without an MMU don't
* support shared libraries and therefore don't have one.
*/
#define __VDSO_PAGES 4
#ifndef __ASSEMBLER__
#ifdef CONFIG_MMU
#include <generated/vdso-offsets.h>
#else
extern size_t __vdso_alternatives_start_offset, __vdso_alternatives_end_offset;
#endif
#ifdef CONFIG_RISCV_USER_CFI
#include <generated/vdso-cfi-offsets.h>
#else
extern size_t __vdso_alternatives_start_cfi_offset, __vdso_alternatives_end_cfi_offset;
#endif
#ifdef CONFIG_RISCV_USER_CFI
#define VDSO_SYMBOL(base, name) \
(riscv_has_extension_unlikely(RISCV_ISA_EXT_ZIMOP) ? \
(void __user *)((unsigned long)(base) + __vdso_##name##_cfi_offset) : \
(void __user *)((unsigned long)(base) + __vdso_##name##_offset))
#else
#define VDSO_SYMBOL(base, name) \
((void __user *)((unsigned long)(base) + __vdso_##name##_offset))
#endif
#ifdef CONFIG_COMPAT
#include <generated/compat_vdso-offsets.h>
#define COMPAT_VDSO_SYMBOL(base, name) \
(void __user *)((unsigned long)(base) + compat__vdso_##name##_offset)
#else
extern size_t compat__vdso_alternatives_start_offset, compat__vdso_alternatives_end_offset;
#endif /* CONFIG_COMPAT */
extern char vdso_start[], vdso_end[];
extern char vdso_cfi_start[], vdso_cfi_end[];
extern char compat_vdso_start[], compat_vdso_end[];
#endif /* !__ASSEMBLER__ */
#endif /* _ASM_RISCV_VDSO_H */
|
