40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Author: Huacai Chen <chenhuacai@loongson.cn>
|
|
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
|
|
*/
|
|
|
|
#ifndef __ASM_VDSO_H
|
|
#define __ASM_VDSO_H
|
|
|
|
#include <linux/mm.h>
|
|
#include <linux/mm_types.h>
|
|
#include <vdso/datapage.h>
|
|
|
|
#include <asm/barrier.h>
|
|
|
|
/*
|
|
* struct loongarch_vdso_info - Details of a VDSO image.
|
|
* @vdso: Pointer to VDSO image (page-aligned).
|
|
* @size: Size of the VDSO image (page-aligned).
|
|
* @off_rt_sigreturn: Offset of the rt_sigreturn() trampoline.
|
|
* @code_mapping: Special mapping structure for vdso code.
|
|
* @code_mapping: Special mapping structure for vdso data.
|
|
*
|
|
* This structure contains details of a VDSO image, including the image data
|
|
* and offsets of certain symbols required by the kernel. It is generated as
|
|
* part of the VDSO build process, aside from the mapping page array, which is
|
|
* populated at runtime.
|
|
*/
|
|
struct loongarch_vdso_info {
|
|
void *vdso;
|
|
unsigned long size;
|
|
unsigned long offset_sigreturn;
|
|
struct vm_special_mapping code_mapping;
|
|
struct vm_special_mapping data_mapping;
|
|
};
|
|
|
|
extern struct loongarch_vdso_info vdso_info;
|
|
|
|
#endif /* __ASM_VDSO_H */
|