diff options
Diffstat (limited to 'cpukit/score/src/coretodgetuptime.c')
-rw-r--r-- | cpukit/score/src/coretodgetuptime.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/cpukit/score/src/coretodgetuptime.c b/cpukit/score/src/coretodgetuptime.c new file mode 100644 index 0000000000..c5d940b0c0 --- /dev/null +++ b/cpukit/score/src/coretodgetuptime.c @@ -0,0 +1,56 @@ +/* + * Time of Day (TOD) Handler - get uptime + */ + +/* COPYRIGHT (c) 1989-2008. + * 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.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include <rtems/system.h> +#include <rtems/score/isr.h> +#include <rtems/score/timestamp.h> +#include <rtems/score/tod.h> +#include <rtems/score/watchdog.h> + +/* + * _TOD_Get_uptime + * + * This routine is used to obtain the system uptime + * + * Input parameters: + * time - pointer to the timestamp structure + * + * Output parameters: NONE + */ + +void _TOD_Get_uptime( + Timestamp_Control *uptime +) +{ + ISR_Level level; + Timestamp_Control offset; + Timestamp_Control up; + long nanoseconds; + + /* assume time checked for NULL by caller */ + + /* _TOD_Uptime is in native timestamp format */ + _ISR_Disable( level ); + up = _TOD_Uptime; + nanoseconds = (*_Watchdog_Nanoseconds_since_tick_handler)(); + _ISR_Enable( level ); + + _Timestamp_Set( &offset, 0, nanoseconds ); + _Timestamp_Add_to( &up, &offset ); + *uptime = up; +} |