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timerisr.S @ 5c9be63

4.104.114.95

Last change on this file since 5c9be63 was df2837ff, checked in by Joel Sherrill <joel.sherrill@…>, on 03/12/07 at 11:16:53

2007-03-12 Joel Sherrill <joel@…>

mcf5272/clock/ckinit.c, mcf5272/include/mcf5272.h, mcf5272/timer/timer.c, mcf5272/timer/timerisr.S: Correct license URL and/or fix mistake in copyright notice. Both of these mistakes appear to be from code submitted after these changes were made previously.

File size: 1.2 KB

Rev	Line
[3cfd520]	1	/*
	2	* Handle MCF5272 TIMER2 interrupts.
	3	*
	4	* All code in this routine is pure overhead which can perturb the
	5	* accuracy of RTEMS' timing test suite.
	6	*
	7	* See also: Read_timer()
	8	*
	9	* To reduce overhead this is best to be the "rawest" hardware interupt
	10	* handler you can write. This should be the only interrupt which can
	11	* occur during the measured time period.
	12	*
	13	* An external counter, Timer_interrupts, is incremented.
	14	*
	15	* Copyright (C) 2000 OKTET Ltd., St.-Petersburg, Russia
	16	* Author: Victor V. Vengerov <vvv@oktet.ru>
	17	*
	18	* This file based on work:
	19	* Author:
	20	* David Fiddes, D.J@fiddes.surfaid.org
	21	* http://www.calm.hw.ac.uk/davidf/coldfire/
	22	*
	23	* COPYRIGHT (c) 1989-1998.
	24	* On-Line Applications Research Corporation (OAR).
	25	*
	26	* The license and distribution terms for this file may be
	27	* found in the file LICENSE in this distribution or at
	28	*
[df2837ff]	29	* http://www.rtems.com/license/LICENSE.
[3cfd520]	30	*
	31	* timerisr.S,v 1.1 2001/10/26 19:32:40 joel Exp
	32	*/
	33
[64bb079]	34	#include <rtems/asm.h>
	35	#include <bsp.h>
[3cfd520]	36	/*
	37	#include "mcf5272/mcf5272.h"
	38	*/
	39
	40	BEGIN_CODE
	41	PUBLIC(timerisr)
	42	SYM(timerisr):
	43	move.l a0, a7@-
	44	move.b # (MCF5272_TER_REF + MCF5272_TER_CAP), (a0)
	45	addq.l #1,SYM(Timer_interrupts) \| increment timer value
	46	move.l a7@+, a0
	47	rte
	48	END_CODE
	49	END

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