projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| c52d0d30 | 2 | /* |
| ebb5e78c AS |
3 | * Copyright (C) 2015 Imagination Technologies |
| 4 | * Author: Alex Smith <alex.smith@imgtec.com> | |
| c52d0d30 DD |
5 | */ |
| 6 | ||
| 7 | #ifndef __ASM_VDSO_H | |
| 8 | #define __ASM_VDSO_H | |
| 9 | ||
| ebb5e78c | 10 | #include <linux/mm_types.h> |
| 24640f23 | 11 | #include <vdso/datapage.h> |
| c52d0d30 | 12 | |
| a7f4df4e AS |
13 | #include <asm/barrier.h> |
| 14 | ||
| ebb5e78c AS |
15 | /** |
| 16 | * struct mips_vdso_image - Details of a VDSO image. | |
| 17 | * @data: Pointer to VDSO image data (page-aligned). | |
| 18 | * @size: Size of the VDSO image data (page-aligned). | |
| 19 | * @off_sigreturn: Offset of the sigreturn() trampoline. | |
| 20 | * @off_rt_sigreturn: Offset of the rt_sigreturn() trampoline. | |
| 21 | * @mapping: Special mapping structure. | |
| 22 | * | |
| 23 | * This structure contains details of a VDSO image, including the image data | |
| 24 | * and offsets of certain symbols required by the kernel. It is generated as | |
| 25 | * part of the VDSO build process, aside from the mapping page array, which is | |
| 26 | * populated at runtime. | |
| 27 | */ | |
| 28 | struct mips_vdso_image { | |
| 29 | void *data; | |
| 30 | unsigned long size; | |
| c52d0d30 | 31 | |
| ebb5e78c AS |
32 | unsigned long off_sigreturn; |
| 33 | unsigned long off_rt_sigreturn; | |
| 34 | ||
| 35 | struct vm_special_mapping mapping; | |
| c52d0d30 | 36 | }; |
| ebb5e78c AS |
37 | |
| 38 | /* | |
| 39 | * The following structures are auto-generated as part of the build for each | |
| 40 | * ABI by genvdso, see arch/mips/vdso/Makefile. | |
| 41 | */ | |
| 42 | ||
| 43 | extern struct mips_vdso_image vdso_image; | |
| 44 | ||
| 45 | #ifdef CONFIG_MIPS32_O32 | |
| 46 | extern struct mips_vdso_image vdso_image_o32; | |
| 47 | #endif | |
| 48 | ||
| 49 | #ifdef CONFIG_MIPS32_N32 | |
| 50 | extern struct mips_vdso_image vdso_image_n32; | |
| 51 | #endif | |
| 52 | ||
| c52d0d30 | 53 | #endif /* __ASM_VDSO_H */ |