| /* | |
| * Copyright (C) 2012 ARM Limited | |
| * Copyright (C) 2014 Regents of the University of California | |
| * Copyright (C) 2017 SiFive | |
| * | |
| * This program is free software; you can redistribute it and/or modify | |
| * it under the terms of the GNU General Public License version 2 as | |
| * published by the Free Software Foundation. | |
| * | |
| * This program is distributed in the hope that it will be useful, | |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| * GNU General Public License for more details. | |
| * | |
| * You should have received a copy of the GNU General Public License | |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| */ | |
| #ifndef _ASM_RISCV_VDSO_H | |
| #define _ASM_RISCV_VDSO_H | |
| #include <linux/types.h> | |
| struct vdso_data { | |
| }; | |
| /* | |
| * The VDSO symbols are mapped into Linux so we can just use regular symbol | |
| * addressing to get their offsets in userspace. The symbols are mapped at an | |
| * offset of 0, but since the linker must support setting weak undefined | |
| * symbols to the absolute address 0 it also happens to support other low | |
| * addresses even when the code model suggests those low addresses would not | |
| * otherwise be availiable. | |
| */ | |
| #define VDSO_SYMBOL(base, name) \ | |
| ({ \ | |
| extern const char __vdso_##name[]; \ | |
| (void __user *)((unsigned long)(base) + __vdso_##name); \ | |
| }) | |
| #ifdef CONFIG_SMP | |
| asmlinkage long sys_riscv_flush_icache(uintptr_t, uintptr_t, uintptr_t); | |
| #endif | |
| #endif /* _ASM_RISCV_VDSO_H */ |