1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Fast user context implementation of clock_gettime, gettimeofday, and time.
4 *
5 * Copyright 2006 Andi Kleen, SUSE Labs.
6 * Copyright 2019 ARM Limited
7 *
8 * 32 Bit compat layer by Stefani Seibold <stefani@seibold.net>
9 * sponsored by Rohde & Schwarz GmbH & Co. KG Munich/Germany
10 */
11 #include <linux/time.h>
12 #include <linux/kernel.h>
13 #include <linux/types.h>
14 #include <vdso/gettime.h>
15
16 #include "../../../../lib/vdso/gettimeofday.c"
17
18 int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
19 {
20 return __cvdso_gettimeofday(tv, tz);
21 }
22
23 int gettimeofday(struct __kernel_old_timeval *, struct timezone *)
24 __attribute__((weak, alias("__vdso_gettimeofday")));
25
26 __kernel_old_time_t __vdso_time(__kernel_old_time_t *t)
27 {
28 return __cvdso_time(t);
29 }
30
31 __kernel_old_time_t time(__kernel_old_time_t *t) __attribute__((weak, alias("__vdso_time")));
32
33
34 #if defined(CONFIG_X86_64) && !defined(BUILD_VDSO32_64)
35 /* both 64-bit and x32 use these */
36 int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts)
37 {
38 return __cvdso_clock_gettime(clock, ts);
39 }
40
41 int clock_gettime(clockid_t, struct __kernel_timespec *)
42 __attribute__((weak, alias("__vdso_clock_gettime")));
43
44 int __vdso_clock_getres(clockid_t clock,
45 struct __kernel_timespec *res)
46 {
47 return __cvdso_clock_getres(clock, res);
48 }
49 int clock_getres(clockid_t, struct __kernel_timespec *)
50 __attribute__((weak, alias("__vdso_clock_getres")));
51
52 #else
53 /* i386 only */
54 int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts)
55 {
56 return __cvdso_clock_gettime32(clock, ts);
57 }
58
59 int clock_gettime(clockid_t, struct old_timespec32 *)
60 __attribute__((weak, alias("__vdso_clock_gettime")));
61
62 int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts)
63 {
64 return __cvdso_clock_gettime(clock, ts);
65 }
66
67 int clock_gettime64(clockid_t, struct __kernel_timespec *)
68 __attribute__((weak, alias("__vdso_clock_gettime64")));
69
70 int __vdso_clock_getres(clockid_t clock, struct old_timespec32 *res)
71 {
72 return __cvdso_clock_getres_time32(clock, res);
73 }
74
75 int clock_getres(clockid_t, struct old_timespec32 *)
76 __attribute__((weak, alias("__vdso_clock_getres")));
77 #endif
78
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