| /* 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 */ |