2007-03-28 Chris Johns <chrisj@rtems.org>

	* rtems/Makefile.am, rtems/include/rtems/rtems/clock.h,
	score/include/rtems/score/watchdog.h: Add support for a handler to
	obtain the number of nanoseconds since the last clock tick. The
	primary interface for this is rtems_clock_set_nanoseconds_extension.
	Subsequent commits from Joel will redo the TOD support to use this
	capability.
	* rtems/src/clocksetnsecshandler.c: New file.

1 files changed, 27 insertions, 2 deletions

diff --git a/cpukit/rtems/include/rtems/rtems/clock.h b/cpukit/rtems/include/rtems/rtems/clock.h
index c5f8bb080c..67fa8ab4cd 100644
--- a/cpukit/rtems/include/rtems/rtems/clock.h
+++ b/cpukit/rtems/include/rtems/rtems/clock.h
@@ -11,10 +11,10 @@
  *
  *     + set the current date and time
  *     + obtain the current date and time
+ *     + set the nanoseconds since last clock tick handler
  *     + announce a clock tick
  *
- *
- *  COPYRIGHT (c) 1989-1999.
+ *  COPYRIGHT (c) 1989-2007.
  *  On-Line Applications Research Corporation (OAR).
  *
  *  The license and distribution terms for this file may be
@@ -56,6 +56,12 @@ typedef struct {
 } rtems_clock_time_value;
 
 /*
+ *  Type for the nanoseconds since last tick BSP extension.
+ */
+typedef Watchdog_Nanoseconds_since_last_tick_routine
+  rtems_nanoseconds_extension_routine;
+
+/*
  *  rtems_clock_get
  *
  *  DESCRIPTION:
@@ -97,6 +103,25 @@ rtems_status_code rtems_clock_set(
 
 rtems_status_code rtems_clock_tick( void );
 
+/*
+ *  rtems_clock_set_nanoseconds_extension
+ *
+ *  DESCRIPTION:
+ *
+ *  This directive sets the BSP provided nanoseconds since last tick
+ *  extension.
+ *
+ *  Input parameters:
+ *    routine - pointer to the extension routine
+ *
+ *  Output parameters:
+ *    RTEMS_SUCCESSFUL - if successful
+ *    error code        - if unsuccessful
+ */
+rtems_status_code rtems_clock_set_nanoseconds_extension(
+  rtems_nanoseconds_extension_routine routine
+);
+
 #ifdef __cplusplus
 }
 #endif