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/* 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>
#define __VDSO_PAGES 6
#define VDSO_NR_VCLOCK_PAGES 2
#define VDSO_VCLOCK_PAGES_START(_b) ((_b) + (__VDSO_PAGES - VDSO_NR_VCLOCK_PAGES) * PAGE_SIZE)
#define VDSO_PAGE_PVCLOCK_OFFSET 0
#define VDSO_PAGE_HVCLOCK_OFFSET 1
#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;
unsigned long extable_base, extable_len;
const void *extable;
long sym___kernel_sigreturn;
long sym___kernel_rt_sigreturn;
long sym___kernel_vsyscall;
long sym_int80_landing_pad;
long sym_vdso32_sigreturn_landing_pad;
long sym_vdso32_rt_sigreturn_landing_pad;
long sym___futex_list64_try_unlock_cs_start;
long sym___futex_list64_try_unlock_cs_end;
long sym___futex_list32_try_unlock_cs_start;
long sym___futex_list32_try_unlock_cs_end;
};
extern const struct vdso_image vdso64_image;
extern const struct vdso_image vdsox32_image;
extern const struct vdso_image vdso32_image;
extern int __init init_vdso_image(const struct vdso_image *image);
extern int map_vdso_once(const struct vdso_image *image, unsigned long addr);
extern bool fixup_vdso_exception(struct pt_regs *regs, int trapnr,
unsigned long error_code,
unsigned long fault_addr);
#endif /* __ASSEMBLER__ */
#endif /* _ASM_X86_VDSO_H */
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