/*
*
* 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.
*
* $Id$
*/
#define TEST_INIT
#include "system.h"
#include <bsp.h>
rtems_task Task_1(
rtems_task_argument argument
);
rtems_task Task_2(
rtems_task_argument argument
);
volatile rtems_unsigned32 Interrupt_occurred;
volatile rtems_unsigned32 Interrupt_enter_time, Interrupt_enter_nested_time;
volatile rtems_unsigned32 Interrupt_return_time, Interrupt_return_nested_time;
rtems_unsigned32 Interrupt_nest;
rtems_isr Isr_handler(
rtems_vector_number vector
);
/*
* INTERNAL RTEMS VARIABLES!!!
*/
extern rtems_unsigned32 _Thread_Dispatch_disable_level;
extern rtems_unsigned32 _Context_Switch_necessary;
extern Chain_Control *_Thread_Ready_chain;
extern rtems_tcb *_Thread_Heir;
rtems_task Init(
rtems_task_argument argument
)
{
rtems_status_code status;
Print_Warning();
puts( "\n\n*** TIME TEST 27 ***" );
status = rtems_task_create(
rtems_build_name( 'T', 'A', '1', ' ' ),
254,
1024,
RTEMS_DEFAULT_MODES,
RTEMS_DEFAULT_ATTRIBUTES,
&Task_id[ 1 ]
);
directive_failed( status, "rtems_task_create Task_1" );
status = rtems_task_start( Task_id[ 1 ], Task_1, 0 );
directive_failed( status, "rtems_task_start Task_1" );
status = rtems_task_create(
rtems_build_name( 'T', 'A', '2', ' ' ),
254,
1024,
RTEMS_DEFAULT_MODES,
RTEMS_DEFAULT_ATTRIBUTES,
&Task_id[ 2 ]
);
directive_failed( status, "rtems_task_create of Task_2" );
status = rtems_task_start( Task_id[ 2 ], Task_2, 0 );
directive_failed( status, "rtems_task_start of Task_2" );
status = rtems_task_delete( RTEMS_SELF );
directive_failed( status, "rtems_task_delete of RTEMS_SELF" );
}
rtems_task Task_1(
rtems_task_argument argument
)
{
_Thread_Dispatch_disable_level = 1;
Interrupt_nest = 1;
Install_tm27_vector( Isr_handler );
Interrupt_occurred = 0;
Timer_initialize();
Cause_tm27_intr();
/* goes to Isr_handler */
#if (MUST_WAIT_FOR_INTERRUPT == 1)
while ( Interrupt_occurred == 0 );
#endif
Interrupt_return_time = Read_timer();
put_time(
"INTERRUPT_ENTER (nested interrupt)",
Interrupt_enter_nested_time,
1,
0,
0
);
put_time(
"INTERRUPT_RETURN (nested interrupt)",
Interrupt_return_nested_time,
1,
0,
0
);
Interrupt_nest = 0;
_Thread_Dispatch_disable_level = 0;
Interrupt_occurred = 0;
Timer_initialize();
Cause_tm27_intr();
/* goes to Isr_handler */
#if (MUST_WAIT_FOR_INTERRUPT == 1)
while ( Interrupt_occurred == 0 );
#endif
Interrupt_return_time = Read_timer();
put_time(
"INTERRUPT_ENTER (no preempt)",
Interrupt_enter_time,
1,
0,
0
);
put_time(
"INTERRUPT_RETURN (no preempt)",
Interrupt_return_time,
1,
0,
0
);
_Thread_Dispatch_disable_level = 0;
_Thread_Heir = (rtems_tcb *) _Thread_Ready_chain[254].last;
_Context_Switch_necessary = 1;
Interrupt_occurred = 0;
Timer_initialize();
Cause_tm27_intr();
/* goes to Isr_handler */
}
rtems_task Task_2(
rtems_task_argument argument
)
{
#if (MUST_WAIT_FOR_INTERRUPT == 1)
while ( Interrupt_occurred == 0 );
#endif
end_time = Read_timer();
put_time(
"INTERRUPT_ENTER (preempt)",
Interrupt_enter_time,
1,
0,
0
);
put_time(
"INTERRUPT_RETURN (preempt)",
end_time,
1,
0,
0
);
puts( "*** END OF TEST 27 ***" );
exit( 0 );
}
/* The Isr_handler() and Isr_handler_inner() routines are structured
* so that there will be as little entry overhead as possible included
* in the interrupt entry time.
*/
void Isr_handler_inner( void );
rtems_isr Isr_handler(
rtems_vector_number vector
)
{
end_time = Read_timer();
Interrupt_occurred = 1;
Isr_handler_inner();
}
void Isr_handler_inner( void )
{
/*enable_tracing();*/
Clear_tm27_intr();
switch ( Interrupt_nest ) {
case 0:
Interrupt_enter_time = end_time;
break;
case 1:
Interrupt_enter_time = end_time;
Interrupt_nest = 2;
Interrupt_occurred = 0;
Lower_tm27_intr();
Timer_initialize();
Cause_tm27_intr();
/* goes to a nested copy of Isr_handler */
#if (MUST_WAIT_FOR_INTERRUPT == 1)
while ( Interrupt_occurred == 0 );
#endif
Interrupt_return_nested_time = Read_timer();
break;
case 2:
Interrupt_enter_nested_time = end_time;
break;
}
Timer_initialize();
}