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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_CSKY_VDSO_H
#define __ASM_CSKY_VDSO_H
#include <linux/types.h>
#ifndef GENERIC_TIME_VSYSCALL
struct vdso_data {
};
#endif
/*
* 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 available.
*/
#define VDSO_SYMBOL(base, name) \
({ \
extern const char __vdso_##name[]; \
(void __user *)((unsigned long)(base) + __vdso_##name); \
})
#endif /* __ASM_CSKY_VDSO_H */