summaryrefslogtreecommitdiffstats
path: root/arch/x86/include/asm/vdso.h
blob: 230474e2ddb5b3eb687cdd647a15f750a65e5f32 (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
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_VDSO_H
#define _ASM_X86_VDSO_H

#include <asm/page_types.h>
#include <linux/linkage.h>
#include <linux/init.h>

#ifndef __ASSEMBLER__

#include <linux/mm_types.h>

struct vdso_image {
	void *data;
	unsigned long size;   /* Always a multiple of PAGE_SIZE */

	unsigned long alt, alt_len;

	long sym_vvar_start;  /* Negative offset to the vvar area */

	long sym_vvar_page;
	long sym_pvclock_page;
	long sym_hvclock_page;
	long sym_VDSO32_NOTE_MASK;
	long sym___kernel_sigreturn;
	long sym___kernel_rt_sigreturn;
	long sym___kernel_vsyscall;
	long sym_int80_landing_pad;
};

#ifdef CONFIG_X86_64
extern const struct vdso_image vdso_image_64;
#endif

#ifdef CONFIG_X86_X32
extern const struct vdso_image vdso_image_x32;
#endif

#if defined CONFIG_X86_32 || defined CONFIG_COMPAT
extern const struct vdso_image vdso_image_32;
#endif

extern void __init init_vdso_image(const struct vdso_image *image);

extern int map_vdso_once(const struct vdso_image *image, unsigned long addr);

#endif /* __ASSEMBLER__ */

#endif /* _ASM_X86_VDSO_H */