mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2026-09-01 22:01:36 +08:00
Joel Sherrill
9c49db4d6a
* configure.in: Add libc/config.h * libc/Makefile.am: Add INCLUDES += -I. to pickup config.h * libc/.cvsignore: Add config.h and stamp-h * libc/*.c: Add config.h support.
121 lines
2.3 KiB
C
121 lines
2.3 KiB
C
/*
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* gettimeofday() - SVR4 and BSD4.3 extension required by Newlib
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*
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* COPYRIGHT (c) 1989-1999.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.OARcorp.com/rtems/license.html.
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*
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* $Id$
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#define __RTEMS_VIOLATE_KERNEL_VISIBILITY__
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#include <rtems.h>
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#if !defined(RTEMS_UNIX)
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#ifdef RTEMS_NEWLIB
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#include <sys/reent.h>
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#endif
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#include <sys/time.h>
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#include <time.h>
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#include <errno.h>
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#include <assert.h>
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/*
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* Seconds from January 1, 1970 to January 1, 1988. Used to account for
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* differences between POSIX API and RTEMS core.
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*/
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#define POSIX_TIME_SECONDS_1970_THROUGH_1988 \
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(((1987 - 1970 + 1) * TOD_SECONDS_PER_NON_LEAP_YEAR) + \
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(4 * TOD_SECONDS_PER_DAY))
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/*
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* NOTE: The solaris gettimeofday does not have a second parameter.
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*/
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int gettimeofday(
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struct timeval *tp,
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struct timezone *tzp
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)
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{
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rtems_interrupt_level level;
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rtems_unsigned32 seconds;
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rtems_unsigned32 microseconds;
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if ( !tp ) {
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errno = EFAULT;
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return -1;
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}
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/*
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* POSIX does not seem to allow for not having a TOD so we just
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* grab the time of day.
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*
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* NOTE: XXX this routine should really be in the executive proper.
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*/
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rtems_interrupt_disable(level);
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seconds = _TOD_Seconds_since_epoch;
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microseconds = _TOD_Current.ticks;
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rtems_interrupt_enable(level);
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tp->tv_sec = seconds + POSIX_TIME_SECONDS_1970_THROUGH_1988;
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tp->tv_usec = microseconds * _TOD_Microseconds_per_tick;
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/*
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* newlib does not have timezone and daylight savings time
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* yet. When it does this needs to be fixed.
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*/
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#if 0
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if ( tzp ) {
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tzp->tz_minuteswest = 0; /* at UTC */
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tzp->tz_dsttime = 0; /* no daylight savings */
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tzp->minuteswest = timezone / 60; /* from seconds to minutes */
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tzp->dsttime = daylight;
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}
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#endif
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return 0;
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}
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#if defined(RTEMS_NEWLIB)
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/*
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* "Reentrant" version
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*/
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int _gettimeofday_r(
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struct _reent *ignored_reentrancy_stuff,
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struct timeval *tp,
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struct timezone *tzp
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)
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{
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return gettimeofday( tp, tzp );
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}
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/*
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* "System call" version
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*/
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int _gettimeofday(
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struct timeval *tp,
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struct timezone *tzp
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)
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{
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return gettimeofday( tp, tzp );
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}
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#endif /* defined(RTEMS_NEWLIB) */
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#endif
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