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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libc/] [__gettod.c] - Blame information for rev 773

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/*
 *  gettimeofday() - SVR4 and BSD4.3 extension required by Newlib
 *
 *  COPYRIGHT (c) 1989-1999.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.OARcorp.com/rtems/license.html.
 *
 *  $Id: __gettod.c,v 1.2 2001-09-27 12:01:15 chris Exp $
 */
 
#define __RTEMS_VIOLATE_KERNEL_VISIBILITY__
 
#include <rtems.h>
 
#if !defined(RTEMS_UNIX)
#ifdef RTEMS_NEWLIB
#include <sys/reent.h>
#endif
 
#include <sys/time.h>
#include <time.h>
 
#include <errno.h>
#include <assert.h>
 
/*
 *  Seconds from January 1, 1970 to January 1, 1988.  Used to account for
 *  differences between POSIX API and RTEMS core.
 */
 
#define POSIX_TIME_SECONDS_1970_THROUGH_1988 \
  (((1987 - 1970 + 1)  * TOD_SECONDS_PER_NON_LEAP_YEAR) + \
  (4 * TOD_SECONDS_PER_DAY))
 
/*
 *  NOTE:  The solaris gettimeofday does not have a second parameter.
 */
 
int gettimeofday(
  struct timeval  *tp,
  struct timezone *tzp
)
{
  rtems_interrupt_level level;
  rtems_unsigned32      seconds;
  rtems_unsigned32      microseconds;
 
  if ( !tp ) {
    errno = EFAULT;
    return -1;
  }
 
  /*
   *  POSIX does not seem to allow for not having a TOD so we just
   *  grab the time of day.
   *
   *  NOTE: XXX this routine should really be in the executive proper.
   */
 
  rtems_interrupt_disable(level);
    seconds      = _TOD_Seconds_since_epoch;
    microseconds = _TOD_Current.ticks;
  rtems_interrupt_enable(level);
 
  tp->tv_sec  = seconds + POSIX_TIME_SECONDS_1970_THROUGH_1988;
  tp->tv_usec = microseconds * _TOD_Microseconds_per_tick;
 
  /*
   * newlib does not have timezone and daylight savings time
   * yet.  When it does this needs to be fixed.
   */
 
#if 0
  if ( tzp ) {
    tzp->tz_minuteswest = 0;  /* at UTC */
    tzp->tz_dsttime = 0;      /* no daylight savings */
  tzp->minuteswest = timezone / 60; /* from seconds to minutes */
  tzp->dsttime = daylight;
  }
#endif
  return 0;
}
 
#if defined(RTEMS_NEWLIB)
 
/*
 *  "Reentrant" version
 */
 
int _gettimeofday_r(
  struct _reent   *ignored_reentrancy_stuff,
  struct timeval  *tp,
  struct timezone *tzp
)
{
  return gettimeofday( tp, tzp );
}
 
/*
 *  "System call" version
 */
 
int _gettimeofday(
  struct timeval  *tp,
  struct timezone *tzp
)
{
  return gettimeofday( tp, tzp );
}
 
#endif /* defined(RTEMS_NEWLIB) */
 
#endif

Line No.	Rev	Author	Line
1	30	unneback	`/*`
2			`* gettimeofday() - SVR4 and BSD4.3 extension required by Newlib`
3			`*`
4			`* COPYRIGHT (c) 1989-1999.`
5			`* On-Line Applications Research Corporation (OAR).`
6			`*`
7			`* The license and distribution terms for this file may be`
8			`* found in the file LICENSE in this distribution or at`
9			`* http://www.OARcorp.com/rtems/license.html.`
10			`*`
11			`* $Id: __gettod.c,v 1.2 2001-09-27 12:01:15 chris Exp $`
12			`*/`
13
14			`#define __RTEMS_VIOLATE_KERNEL_VISIBILITY__`
15
16			`#include <rtems.h>`
17
18			`#if !defined(RTEMS_UNIX)`
19			`#ifdef RTEMS_NEWLIB`
20			`#include <sys/reent.h>`
21			`#endif`
22
23			`#include <sys/time.h>`
24			`#include <time.h>`
25
26			`#include <errno.h>`
27			`#include <assert.h>`
28
29			`/*`
30			`* Seconds from January 1, 1970 to January 1, 1988. Used to account for`
31			`* differences between POSIX API and RTEMS core.`
32			`*/`
33
34			`#define POSIX_TIME_SECONDS_1970_THROUGH_1988 \`
35			`(((1987 - 1970 + 1) * TOD_SECONDS_PER_NON_LEAP_YEAR) + \`
36			`(4 * TOD_SECONDS_PER_DAY))`
37
38			`/*`
39			`* NOTE: The solaris gettimeofday does not have a second parameter.`
40			`*/`
41
42			`int gettimeofday(`
43			`struct timeval *tp,`
44			`struct timezone *tzp`
45			`)`
46			`{`
47			`rtems_interrupt_level level;`
48			`rtems_unsigned32 seconds;`
49			`rtems_unsigned32 microseconds;`
50
51			`if ( !tp ) {`
52			`errno = EFAULT;`
53			`return -1;`
54			`}`
55
56			`/*`
57			`* POSIX does not seem to allow for not having a TOD so we just`
58			`* grab the time of day.`
59			`*`
60			`* NOTE: XXX this routine should really be in the executive proper.`
61			`*/`
62
63			`rtems_interrupt_disable(level);`
64			`seconds = _TOD_Seconds_since_epoch;`
65			`microseconds = _TOD_Current.ticks;`
66			`rtems_interrupt_enable(level);`
67
68			`tp->tv_sec = seconds + POSIX_TIME_SECONDS_1970_THROUGH_1988;`
69			`tp->tv_usec = microseconds * _TOD_Microseconds_per_tick;`
70
71			`/*`
72			`* newlib does not have timezone and daylight savings time`
73			`* yet. When it does this needs to be fixed.`
74			`*/`
75
76			`#if 0`
77			`if ( tzp ) {`
78			`tzp->tz_minuteswest = 0; /* at UTC */`
79			`tzp->tz_dsttime = 0; /* no daylight savings */`
80			`tzp->minuteswest = timezone / 60; /* from seconds to minutes */`
81			`tzp->dsttime = daylight;`
82			`}`
83			`#endif`
84			`return 0;`
85			`}`
86
87			`#if defined(RTEMS_NEWLIB)`
88
89			`/*`
90			`* "Reentrant" version`
91			`*/`
92
93			`int _gettimeofday_r(`
94			`struct _reent *ignored_reentrancy_stuff,`
95			`struct timeval *tp,`
96			`struct timezone *tzp`
97			`)`
98			`{`
99			`return gettimeofday( tp, tzp );`
100			`}`
101
102			`/*`
103			`* "System call" version`
104			`*/`
105
106			`int _gettimeofday(`
107			`struct timeval *tp,`
108			`struct timezone *tzp`
109			`)`
110			`{`
111			`return gettimeofday( tp, tzp );`
112			`}`
113
114			`#endif /* defined(RTEMS_NEWLIB) */`
115
116			`#endif`

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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libc/] [__gettod.c] - Blame information for rev 773