xref: /openbmc/linux/arch/x86/include/asm/vdso.h (revision 82003e04)
1 #ifndef _ASM_X86_VDSO_H
2 #define _ASM_X86_VDSO_H
3 
4 #include <asm/page_types.h>
5 #include <linux/linkage.h>
6 #include <linux/init.h>
7 
8 #ifndef __ASSEMBLER__
9 
10 #include <linux/mm_types.h>
11 
12 struct vdso_image {
13 	void *data;
14 	unsigned long size;   /* Always a multiple of PAGE_SIZE */
15 
16 	unsigned long alt, alt_len;
17 
18 	long sym_vvar_start;  /* Negative offset to the vvar area */
19 
20 	long sym_vvar_page;
21 	long sym_hpet_page;
22 	long sym_pvclock_page;
23 	long sym_VDSO32_NOTE_MASK;
24 	long sym___kernel_sigreturn;
25 	long sym___kernel_rt_sigreturn;
26 	long sym___kernel_vsyscall;
27 	long sym_int80_landing_pad;
28 };
29 
30 #ifdef CONFIG_X86_64
31 extern const struct vdso_image vdso_image_64;
32 #endif
33 
34 #ifdef CONFIG_X86_X32
35 extern const struct vdso_image vdso_image_x32;
36 #endif
37 
38 #if defined CONFIG_X86_32 || defined CONFIG_COMPAT
39 extern const struct vdso_image vdso_image_32;
40 #endif
41 
42 extern void __init init_vdso_image(const struct vdso_image *image);
43 
44 extern int map_vdso_once(const struct vdso_image *image, unsigned long addr);
45 
46 #endif /* __ASSEMBLER__ */
47 
48 #endif /* _ASM_X86_VDSO_H */
49