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 | |
15 | #include "../../../../lib/vdso/gettimeofday.c" |
16 | |
17 | extern int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz); |
18 | extern __kernel_old_time_t __vdso_time(__kernel_old_time_t *t); |
19 | |
20 | int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz) |
21 | { |
22 | return __cvdso_gettimeofday(tv, tz); |
23 | } |
24 | |
25 | int gettimeofday(struct __kernel_old_timeval *, struct timezone *) |
26 | __attribute__((weak, alias("__vdso_gettimeofday" ))); |
27 | |
28 | __kernel_old_time_t __vdso_time(__kernel_old_time_t *t) |
29 | { |
30 | return __cvdso_time(time: t); |
31 | } |
32 | |
33 | __kernel_old_time_t time(__kernel_old_time_t *t) __attribute__((weak, alias("__vdso_time" ))); |
34 | |
35 | |
36 | #if defined(CONFIG_X86_64) && !defined(BUILD_VDSO32_64) |
37 | /* both 64-bit and x32 use these */ |
38 | extern int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts); |
39 | extern int __vdso_clock_getres(clockid_t clock, struct __kernel_timespec *res); |
40 | |
41 | int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts) |
42 | { |
43 | return __cvdso_clock_gettime(clock, ts); |
44 | } |
45 | |
46 | int clock_gettime(clockid_t, struct __kernel_timespec *) |
47 | __attribute__((weak, alias("__vdso_clock_gettime" ))); |
48 | |
49 | int __vdso_clock_getres(clockid_t clock, |
50 | struct __kernel_timespec *res) |
51 | { |
52 | return __cvdso_clock_getres(clock, res); |
53 | } |
54 | int clock_getres(clockid_t, struct __kernel_timespec *) |
55 | __attribute__((weak, alias("__vdso_clock_getres" ))); |
56 | |
57 | #else |
58 | /* i386 only */ |
59 | extern int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts); |
60 | extern int __vdso_clock_getres(clockid_t clock, struct old_timespec32 *res); |
61 | |
62 | int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts) |
63 | { |
64 | return __cvdso_clock_gettime32(clock, ts); |
65 | } |
66 | |
67 | int clock_gettime(clockid_t, struct old_timespec32 *) |
68 | __attribute__((weak, alias("__vdso_clock_gettime" ))); |
69 | |
70 | int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts) |
71 | { |
72 | return __cvdso_clock_gettime(clock, ts); |
73 | } |
74 | |
75 | int clock_gettime64(clockid_t, struct __kernel_timespec *) |
76 | __attribute__((weak, alias("__vdso_clock_gettime64" ))); |
77 | |
78 | int __vdso_clock_getres(clockid_t clock, struct old_timespec32 *res) |
79 | { |
80 | return __cvdso_clock_getres_time32(clock, res); |
81 | } |
82 | |
83 | int clock_getres(clockid_t, struct old_timespec32 *) |
84 | __attribute__((weak, alias("__vdso_clock_getres" ))); |
85 | #endif |
86 | |