1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _ASM_X86_VDSO_H |
3 | #define _ASM_X86_VDSO_H |
4 | |
5 | #include <asm/page_types.h> |
6 | #include <linux/linkage.h> |
7 | #include <linux/init.h> |
8 | |
9 | #ifndef __ASSEMBLER__ |
10 | |
11 | #include <linux/mm_types.h> |
12 | |
13 | struct vdso_image { |
14 | void *data; |
15 | unsigned long size; /* Always a multiple of PAGE_SIZE */ |
16 | |
17 | unsigned long alt, alt_len; |
18 | unsigned long extable_base, extable_len; |
19 | const void *extable; |
20 | |
21 | long sym_vvar_start; /* Negative offset to the vvar area */ |
22 | |
23 | long sym_vvar_page; |
24 | long sym_pvclock_page; |
25 | long sym_hvclock_page; |
26 | long sym_timens_page; |
27 | long sym_VDSO32_NOTE_MASK; |
28 | long sym___kernel_sigreturn; |
29 | long sym___kernel_rt_sigreturn; |
30 | long sym___kernel_vsyscall; |
31 | long sym_int80_landing_pad; |
32 | long sym_vdso32_sigreturn_landing_pad; |
33 | long sym_vdso32_rt_sigreturn_landing_pad; |
34 | }; |
35 | |
36 | #ifdef CONFIG_X86_64 |
37 | extern const struct vdso_image vdso_image_64; |
38 | #endif |
39 | |
40 | #ifdef CONFIG_X86_X32_ABI |
41 | extern const struct vdso_image vdso_image_x32; |
42 | #endif |
43 | |
44 | #if defined CONFIG_X86_32 || defined CONFIG_COMPAT |
45 | extern const struct vdso_image vdso_image_32; |
46 | #endif |
47 | |
48 | extern int __init init_vdso_image(const struct vdso_image *image); |
49 | |
50 | extern int map_vdso_once(const struct vdso_image *image, unsigned long addr); |
51 | |
52 | extern bool fixup_vdso_exception(struct pt_regs *regs, int trapnr, |
53 | unsigned long error_code, |
54 | unsigned long fault_addr); |
55 | #endif /* __ASSEMBLER__ */ |
56 | |
57 | #endif /* _ASM_X86_VDSO_H */ |
58 | |