Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 2012 ARM Limited
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (C) 2014 Regents of the University of California
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (C) 2017 SiFive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #ifndef _ASM_RISCV_VDSO_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #define _ASM_RISCV_VDSO_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #ifndef CONFIG_GENERIC_TIME_VSYSCALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) struct vdso_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  * The VDSO symbols are mapped into Linux so we can just use regular symbol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * addressing to get their offsets in userspace.  The symbols are mapped at an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  * offset of 0, but since the linker must support setting weak undefined
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  * symbols to the absolute address 0 it also happens to support other low
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  * addresses even when the code model suggests those low addresses would not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  * otherwise be availiable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define VDSO_SYMBOL(base, name)							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) ({										\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	extern const char __vdso_##name[];					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	(void __user *)((unsigned long)(base) + __vdso_##name);			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) asmlinkage long sys_riscv_flush_icache(uintptr_t, uintptr_t, uintptr_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #endif /* _ASM_RISCV_VDSO_H */