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RIOT/cpu/arm_common/gettimeofday.c
2014-08-05 18:52:26 +02:00

47 lines
1.2 KiB
C

/*
* Copyright (C) 2013 Oliver Hahm <oliver.hahm@inria.fr>
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @file
* @ingroup arm_common
* @brief LPC2387 Newlib gettimeofday() system call glue
*
* @author Michael Baar <michael.baar@fu-berlin.de>
* @author René Kijewski <rene.kijewski@fu-berlin.de>
*/
#include <sys/time.h>
#include "kernel_types.h"
#if defined MODULE_RTC
# include "rtc.h"
#elif defined MODULE_VTIMER
# include "vtimer.h"
#endif
/* Declared as external, without a definition. */
/* This will cause a linktime error, if _gettimeofday() is referenced, */
/* and neither rtc nor vtimer were linked in. */
extern void __gettimeofday_syscall_is_not_implemented_without_vtimer_or_rtc_module(void);
int _gettimeofday(struct timeval *tp, void *restrict tzp)
{
(void) tzp;
#if defined MODULE_RTC
rtc_time(tp);
#elif defined MODULE_VTIMER
vtimer_gettimeofday(tp);
#else
(void) tp;
__gettimeofday_syscall_is_not_implemented_without_vtimer_or_rtc_module();
#endif
return 0;
}