diff options
Diffstat (limited to 'c/src/lib/libcpu/hppa1.1/timer/timer.c')
-rw-r--r-- | c/src/lib/libcpu/hppa1.1/timer/timer.c | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/c/src/lib/libcpu/hppa1.1/timer/timer.c b/c/src/lib/libcpu/hppa1.1/timer/timer.c deleted file mode 100644 index caa04bd282..0000000000 --- a/c/src/lib/libcpu/hppa1.1/timer/timer.c +++ /dev/null @@ -1,62 +0,0 @@ -/* timer.c - * - * This file manages the interval timer on the PA-RISC. - * - * NOTE: It is important that the timer start/stop overhead be - * determined when porting or modifying this code. - * - * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. - * On-Line Applications Research Corporation (OAR). - * All rights assigned to U.S. Government, 1994. - * - * This material may be reproduced by or for the U.S. Government pursuant - * to the copyright license under the clause at DFARS 252.227-7013. This - * notice must appear in all copies of this file and its derivatives. - * - * $Id$ - */ - -#include <rtems.h> - -volatile rtems_unsigned32 Timer_starting; -rtems_boolean Timer_driver_Find_average_overhead; - -void Timer_initialize() -{ - Timer_starting = get_itimer(); -} - -#define AVG_OVERHEAD 0 /* It typically takes 3.0 microseconds */ - /* (6 countdowns) to start/stop the timer. */ -#define LEAST_VALID 1 /* Don't trust a value lower than this */ - -int Read_timer() -{ - rtems_unsigned32 clicks; - rtems_unsigned32 total; - - clicks = get_itimer(); - - total = clicks - Timer_starting; - - if ( Timer_driver_Find_average_overhead == 1 ) - return total; /* in XXX microsecond units */ - - else { - if ( total < LEAST_VALID ) - return 0; /* below timer resolution */ - return (total - AVG_OVERHEAD); - } -} - -rtems_status_code Empty_function( void ) -{ - return RTEMS_SUCCESSFUL; -} - -void Set_find_average_overhead( - rtems_boolean find_flag -) -{ - Timer_driver_Find_average_overhead = find_flag; -} |