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