1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * ARM64 compat userspace implementations of gettimeofday() and similar.
4  *
5  * Copyright (C) 2018 ARM Limited
6  *
7  */
8 #include <linux/time.h>
9 #include <linux/types.h>
10 
11 int __vdso_clock_gettime(clockid_t clock,
12 			 struct old_timespec32 *ts)
13 {
14 	/* The checks below are required for ABI consistency with arm */
15 	if ((u32)ts >= TASK_SIZE_32)
16 		return -EFAULT;
17 
18 	return __cvdso_clock_gettime32(clock, ts);
19 }
20 
21 int __vdso_clock_gettime64(clockid_t clock,
22 			   struct __kernel_timespec *ts)
23 {
24 	/* The checks below are required for ABI consistency with arm */
25 	if ((u32)ts >= TASK_SIZE_32)
26 		return -EFAULT;
27 
28 	return __cvdso_clock_gettime(clock, ts);
29 }
30 
31 int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
32 			struct timezone *tz)
33 {
34 	return __cvdso_gettimeofday(tv, tz);
35 }
36 
37 int __vdso_clock_getres(clockid_t clock_id,
38 			struct old_timespec32 *res)
39 {
40 	/* The checks below are required for ABI consistency with arm */
41 	if ((u32)res >= TASK_SIZE_32)
42 		return -EFAULT;
43 
44 	return __cvdso_clock_getres_time32(clock_id, res);
45 }
46 
47 /* Avoid unresolved references emitted by GCC */
48 
49 void __aeabi_unwind_cpp_pr0(void)
50 {
51 }
52 
53 void __aeabi_unwind_cpp_pr1(void)
54 {
55 }
56 
57 void __aeabi_unwind_cpp_pr2(void)
58 {
59 }
60