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/*
* COPYRIGHT (c) 1989-2009.
* 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.
*
* $Id$
*/
#include <tmacros.h>
#include <intrcritical.h>
static uint32_t Maximum;
static uint32_t Maximum_current;
static rtems_id Timer;
static rtems_timer_service_routine (*TSR)( rtems_id, void * );
void interrupt_critical_section_test_support_initialize(
rtems_timer_service_routine (*tsr)( rtems_id, void * )
)
{
Watchdog_Interval initial;
uint32_t counter;
initial = _Watchdog_Ticks_since_boot;
Timer = 0;
TSR = tsr;
if ( tsr ) {
rtems_status_code rc;
puts( "Support - rtems_timer_create - creating timer 1" );
rc = rtems_timer_create( rtems_build_name( 'T', 'M', '1', ' ' ), &Timer );
directive_failed( rc, "rtems_timer_create" );
}
/*
* Wait for starting point
*/
for (counter=0 ; initial == _Watchdog_Ticks_since_boot ; counter++)
;
initial = _Watchdog_Ticks_since_boot;
/*
* Wait for ending point
*/
for (counter=0 ; initial == _Watchdog_Ticks_since_boot ; counter++)
;
Maximum = counter;
Maximum_current = counter;
#if 0
printf( "%d 0x%08x counts\n", counter, counter );
#endif
}
bool interrupt_critical_section_test_support_delay(void)
{
uint32_t counter;
Watchdog_Interval initial;
bool retval;
if (TSR) {
rtems_status_code rc;
rc = rtems_timer_fire_after( Timer, 1, TSR, NULL );
directive_failed( rc, "timer_fire_after failed" );
}
/*
* Count down
*/
if ( !Maximum_current ) {
Maximum_current = Maximum;
retval = true;
} else
retval = false;
initial = _Watchdog_Ticks_since_boot;
for (counter=Maximum_current ; counter ; counter--)
if ( initial != _Watchdog_Ticks_since_boot )
break;
Maximum_current--;
/*
* Return so the test can try to generate the condition
*/
return retval;
}
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