/*
	FreeRTOS.org V5.2.0 - Copyright (C) 2003-2009 Richard Barry.

	This file is part of the FreeRTOS.org distribution.

	FreeRTOS.org is free software; you can redistribute it and/or modify it 
	under the terms of the GNU General Public License (version 2) as published
	by the Free Software Foundation and modified by the FreeRTOS exception.

	FreeRTOS.org is distributed in the hope that it will be useful,	but WITHOUT
	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
	FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for 
	more details.

	You should have received a copy of the GNU General Public License along 
	with FreeRTOS.org; if not, write to the Free Software Foundation, Inc., 59 
	Temple Place, Suite 330, Boston, MA  02111-1307  USA.

	A special exception to the GPL is included to allow you to distribute a 
	combined work that includes FreeRTOS.org without being obliged to provide
	the source code for any proprietary components.  See the licensing section
	of http://www.FreeRTOS.org for full details.


	***************************************************************************
	*                                                                         *
	* Get the FreeRTOS eBook!  See http://www.FreeRTOS.org/Documentation      *
	*                                                                         *
	* This is a concise, step by step, 'hands on' guide that describes both   *
	* general multitasking concepts and FreeRTOS specifics. It presents and   *
	* explains numerous examples that are written using the FreeRTOS API.     *
	* Full source code for all the examples is provided in an accompanying    *
	* .zip file.                                                              *
	*                                                                         *
	***************************************************************************

	1 tab == 4 spaces!

	Please ensure to read the configuration and relevant port sections of the
	online documentation.

	http://www.FreeRTOS.org - Documentation, latest information, license and
	contact details.

	http://www.SafeRTOS.com - A version that is certified for use in safety
	critical systems.

	http://www.OpenRTOS.com - Commercial support, development, porting,
	licensing and training services.
*/

/* Scheduler include files. */
#include "FreeRTOS.h"
#include "task.h"

/* Demo file headers. */
#include "regtest.h"

/*
 * Test tasks that sets registers to known values, then checks to ensure the
 * values remain as expected.  Test 1 and test 2 use different values.
 */
static void prvRegisterCheck1( void *pvParameters );
static void prvRegisterCheck2( void *pvParameters );

/* Set to a non zero value should an error be found. */
portBASE_TYPE xRegTestError = pdFALSE;

/*-----------------------------------------------------------*/

void vStartRegTestTasks( void )
{
	xTaskCreate( prvRegisterCheck1, "Reg1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
	xTaskCreate( prvRegisterCheck2, "Reg2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );		
}
/*-----------------------------------------------------------*/

portBASE_TYPE xAreRegTestTasksStillRunning( void )
{
portBASE_TYPE xReturn;

	/* If a register was found to contain an unexpected value then the
	xRegTestError variable would have been set to a non zero value. */
	if( xRegTestError == pdFALSE )
	{
		xReturn = pdTRUE;
	}
	else
	{
		xReturn = pdFALSE;
	}
	
	return xReturn;
}
/*-----------------------------------------------------------*/

static void prvRegisterCheck1( void *pvParameters )
{
	( void ) pvParameters;

	for( ;; )
	{
		asm(	"LDI	r31,	5"		);		
		asm( 	"MOV	r0,		r31"	);
		asm(	"LDI	r31,	6"		);
		asm( 	"MOV	r1,		r31"	);
		asm(	"LDI	r31,	7"		);
		asm( 	"MOV	r2,		r31"	);
		asm(	"LDI	r31,	8"		);
		asm( 	"MOV	r3,		r31"	);
		asm(	"LDI	r31,	9"		);
		asm( 	"MOV	r4,		r31"	);
		asm(	"LDI	r31,	10"		);
		asm( 	"MOV	r5,		r31"	);
		asm(	"LDI	r31,	11"		);
		asm( 	"MOV	r6,		r31"	);
		asm(	"LDI	r31,	12"		);
		asm( 	"MOV	r7,		r31"	);
		asm(	"LDI	r31,	13"		);
		asm( 	"MOV	r8,		r31"	);
		asm(	"LDI	r31,	14"		);
		asm( 	"MOV	r9,		r31"	);
		asm(	"LDI	r31,	15"		);
		asm( 	"MOV	r10,	r31"	);
		asm(	"LDI	r31,	16"		);
		asm( 	"MOV	r11,	r31"	);
		asm(	"LDI	r31,	17"		);
		asm( 	"MOV	r12,	r31"	);
		asm(	"LDI	r31,	18"		);
		asm( 	"MOV	r13,	r31"	);
		asm(	"LDI	r31,	19"		);
		asm( 	"MOV	r14,	r31"	);
		asm(	"LDI	r31,	20"		);
		asm( 	"MOV	r15,	r31"	);
		asm(	"LDI	r16,	21"		);
		asm(	"LDI	r17,	22"		);
		asm(	"LDI	r18,	23"		);
		asm(	"LDI	r19,	24"		);
		asm(	"LDI	r20,	25"		);
		asm(	"LDI	r21,	26"		);
		asm(	"LDI	r22,	27"		);
		asm(	"LDI	r23,	28"		);
		asm(	"LDI	r24,	29"		);
		asm(	"LDI	r25,	30"		);
		asm(	"LDI	r26,	31"		);
		asm(	"LDI	r27,	32"		);
		asm(	"LDI	r30,	33"		);

		asm(	"LDI	r31,	5"			);
		asm(	"CPSE	r31,	r0"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	6"			);
		asm(	"CPSE	r31,	r1"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	7"			);
		asm(	"CPSE	r31,	r2"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	8"			);
		asm(	"CPSE	r31,	r3"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	9"			);
		asm(	"CPSE	r31,	r4"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	10"			);
		asm(	"CPSE	r31,	r5"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	11"			);
		asm(	"CPSE	r31,	r6"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	12"			);
		asm(	"CPSE	r31,	r7"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	13"			);
		asm(	"CPSE	r31,	r8"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	14"			);
		asm(	"CPSE	r31,	r9"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	15"			);
		asm(	"CPSE	r31,	r10"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	16"			);
		asm(	"CPSE	r31,	r11"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	17"			);
		asm(	"CPSE	r31,	r12"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	18"			);
		asm(	"CPSE	r31,	r13"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	19"			);
		asm(	"CPSE	r31,	r14"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	20"			);
		asm(	"CPSE	r31,	r15"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	21"			);
		asm(	"CPSE	r31,	r16"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	22"			);
		asm(	"CPSE	r31,	r17"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	23"			);
		asm(	"CPSE	r31,	r18"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	24"			);
		asm(	"CPSE	r31,	r19"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	25"			);
		asm(	"CPSE	r31,	r20"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	26"			);
		asm(	"CPSE	r31,	r21"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	27"			);
		asm(	"CPSE	r31,	r22"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	28"			);
		asm(	"CPSE	r31,	r23"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	29"			);
		asm(	"CPSE	r31,	r24"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	30"			);
		asm(	"CPSE	r31,	r25"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	31"			);
		asm(	"CPSE	r31,	r26"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	32"			);
		asm(	"CPSE	r31,	r27"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	33"			);
		asm(	"CPSE	r31,	r30"		);
		asm(	"STS	xRegTestError, r0"	);
	}
}
/*-----------------------------------------------------------*/

static void prvRegisterCheck2( void *pvParameters )
{
	( void ) pvParameters;

	for( ;; )
	{
		asm(	"LDI	r31,	1"		);		
		asm( 	"MOV	r0,		r31"	);
		asm(	"LDI	r31,	2"		);
		asm( 	"MOV	r1,		r31"	);
		asm(	"LDI	r31,	3"		);
		asm( 	"MOV	r2,		r31"	);
		asm(	"LDI	r31,	4"		);
		asm( 	"MOV	r3,		r31"	);
		asm(	"LDI	r31,	5"		);
		asm( 	"MOV	r4,		r31"	);
		asm(	"LDI	r31,	6"		);
		asm( 	"MOV	r5,		r31"	);
		asm(	"LDI	r31,	7"		);
		asm( 	"MOV	r6,		r31"	);
		asm(	"LDI	r31,	8"		);
		asm( 	"MOV	r7,		r31"	);
		asm(	"LDI	r31,	9"		);
		asm( 	"MOV	r8,		r31"	);
		asm(	"LDI	r31,	10"		);
		asm( 	"MOV	r9,		r31"	);
		asm(	"LDI	r31,	11"		);
		asm( 	"MOV	r10,	r31"	);
		asm(	"LDI	r31,	12"		);
		asm( 	"MOV	r11,	r31"	);
		asm(	"LDI	r31,	13"		);
		asm( 	"MOV	r12,	r31"	);
		asm(	"LDI	r31,	14"		);
		asm( 	"MOV	r13,	r31"	);
		asm(	"LDI	r31,	15"		);
		asm( 	"MOV	r14,	r31"	);
		asm(	"LDI	r31,	16"		);
		asm( 	"MOV	r15,	r31"	);
		asm(	"LDI	r16,	17"		);
		asm(	"LDI	r17,	18"		);
		asm(	"LDI	r18,	19"		);
		asm(	"LDI	r19,	20"		);
		asm(	"LDI	r20,	21"		);
		asm(	"LDI	r21,	22"		);
		asm(	"LDI	r22,	23"		);
		asm(	"LDI	r23,	24"		);
		asm(	"LDI	r24,	25"		);
		asm(	"LDI	r25,	26"		);
		asm(	"LDI	r26,	27"		);
		asm(	"LDI	r27,	28"		);
		asm(	"LDI	r30,	29"		);

		asm(	"LDI	r31,	1"			);
		asm(	"CPSE	r31,	r0"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	2"			);
		asm(	"CPSE	r31,	r1"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	3"			);
		asm(	"CPSE	r31,	r2"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	4"			);
		asm(	"CPSE	r31,	r3"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	5"			);
		asm(	"CPSE	r31,	r4"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	6"			);
		asm(	"CPSE	r31,	r5"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	7"			);
		asm(	"CPSE	r31,	r6"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	8"			);
		asm(	"CPSE	r31,	r7"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	9"			);
		asm(	"CPSE	r31,	r8"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	10"			);
		asm(	"CPSE	r31,	r9"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	11"			);
		asm(	"CPSE	r31,	r10"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	12"			);
		asm(	"CPSE	r31,	r11"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	13"			);
		asm(	"CPSE	r31,	r12"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	14"			);
		asm(	"CPSE	r31,	r13"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	15"			);
		asm(	"CPSE	r31,	r14"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	16"			);
		asm(	"CPSE	r31,	r15"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	17"			);
		asm(	"CPSE	r31,	r16"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	18"			);
		asm(	"CPSE	r31,	r17"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	19"			);
		asm(	"CPSE	r31,	r18"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	20"			);
		asm(	"CPSE	r31,	r19"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	21"			);
		asm(	"CPSE	r31,	r20"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	22"			);
		asm(	"CPSE	r31,	r21"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	23"			);
		asm(	"CPSE	r31,	r22"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	24"			);
		asm(	"CPSE	r31,	r23"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	25"			);
		asm(	"CPSE	r31,	r24"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	26"			);
		asm(	"CPSE	r31,	r25"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	27"			);
		asm(	"CPSE	r31,	r26"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	28"			);
		asm(	"CPSE	r31,	r27"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	29"			);
		asm(	"CPSE	r31,	r30"		);
		asm(	"STS	xRegTestError, r0"	);
	}
}