86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Fast user context implementation of clock_gettime, gettimeofday, and time.
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*
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* Copyright 2006 Andi Kleen, SUSE Labs.
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* Copyright 2019 ARM Limited
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*
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* 32 Bit compat layer by Stefani Seibold <stefani@seibold.net>
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* sponsored by Rohde & Schwarz GmbH & Co. KG Munich/Germany
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*/
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#include <linux/time.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include "../../../../lib/vdso/gettimeofday.c"
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extern int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz);
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extern __kernel_old_time_t __vdso_time(__kernel_old_time_t *t);
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int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
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{
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return __cvdso_gettimeofday(tv, tz);
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}
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int gettimeofday(struct __kernel_old_timeval *, struct timezone *)
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__attribute__((weak, alias("__vdso_gettimeofday")));
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__kernel_old_time_t __vdso_time(__kernel_old_time_t *t)
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{
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return __cvdso_time(t);
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}
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__kernel_old_time_t time(__kernel_old_time_t *t) __attribute__((weak, alias("__vdso_time")));
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#if defined(CONFIG_X86_64) && !defined(BUILD_VDSO32_64)
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/* both 64-bit and x32 use these */
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extern int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts);
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extern int __vdso_clock_getres(clockid_t clock, struct __kernel_timespec *res);
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int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts)
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{
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return __cvdso_clock_gettime(clock, ts);
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}
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int clock_gettime(clockid_t, struct __kernel_timespec *)
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__attribute__((weak, alias("__vdso_clock_gettime")));
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int __vdso_clock_getres(clockid_t clock,
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struct __kernel_timespec *res)
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{
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return __cvdso_clock_getres(clock, res);
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}
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int clock_getres(clockid_t, struct __kernel_timespec *)
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__attribute__((weak, alias("__vdso_clock_getres")));
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#else
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/* i386 only */
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extern int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts);
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extern int __vdso_clock_getres(clockid_t clock, struct old_timespec32 *res);
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int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts)
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{
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return __cvdso_clock_gettime32(clock, ts);
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}
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int clock_gettime(clockid_t, struct old_timespec32 *)
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__attribute__((weak, alias("__vdso_clock_gettime")));
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int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts)
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{
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return __cvdso_clock_gettime(clock, ts);
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}
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int clock_gettime64(clockid_t, struct __kernel_timespec *)
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__attribute__((weak, alias("__vdso_clock_gettime64")));
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int __vdso_clock_getres(clockid_t clock, struct old_timespec32 *res)
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{
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return __cvdso_clock_getres_time32(clock, res);
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}
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int clock_getres(clockid_t, struct old_timespec32 *)
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__attribute__((weak, alias("__vdso_clock_getres")));
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#endif
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