/*
    FreeRTOS V6.0.5 - Copyright (C) 2010 Real Time Engineers Ltd.

    ***************************************************************************
    *                                                                         *
    * If you are:                                                             *
    *                                                                         *
    *    + New to FreeRTOS,                                                   *
    *    + Wanting to learn FreeRTOS or multitasking in general quickly       *
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    *                                                                         *
    * then take a look at the FreeRTOS eBook                                  *
    *                                                                         *
    *        "Using the FreeRTOS Real Time Kernel - a Practical Guide"        *
    *                  http://www.FreeRTOS.org/Documentation                  *
    *                                                                         *
    * A pdf reference manual is also available.  Both are usually delivered   *
    * to your inbox within 20 minutes to two hours when purchased between 8am *
    * and 8pm GMT (although please allow up to 24 hours in case of            *
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    ***************************************************************************

    This file is part of the FreeRTOS distribution.

    FreeRTOS 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.
    ***NOTE*** The exception to the GPL is included to allow you to distribute
    a combined work that includes FreeRTOS without being obliged to provide the
    source code for proprietary components outside of the FreeRTOS kernel.
    FreeRTOS 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 and the FreeRTOS license exception along with FreeRTOS; if not it 
    can be viewed here: http://www.freertos.org/a00114.html and also obtained 
    by writing to Richard Barry, contact details for whom are available on the
    FreeRTOS WEB site.

    1 tab == 4 spaces!

    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.
*/

	.list
	.section .text
	.global _prvRegTest1Implementation
	.global _prvRegTest2Implementation
	
	.extern _ulRegTest1CycleCount
	.extern _ulRegTest2CycleCount

/* This function is explained in the comments at the top of main.c. */
_prvRegTest1Implementation:

	/* Put a known value in each register. */
	MOV	#1, R1						
	MOV	#2, R2						
	MOV	#3, R3						
	MOV	#4, R4						
	MOV	#5, R5						
	MOV	#6, R6						
	MOV	#7, R7						
	MOV	#8, R8						
	MOV	#9, R9						
	MOV	#10, R10					
	MOV	#11, R11					
	MOV	#12, R12					
	MOV	#13, R13					
	MOV	#14, R14					
	MOV	#15, R15					
	
	/* Loop, checking each itteration that each register still contains the
	expected value. */
TestLoop1:								

	/* Push the registers that are going to get clobbered. */
	PUSHM	R14-R15						
	
	/* Increment the loop counter to show this task is still getting CPU time. */
	MOV	#_ulRegTest1CycleCount, R14	
	MOV	[ R14 ], R15				
	ADD	#1, R15						
	MOV	R15, [ R14 ]				
	
	/* Yield to extend the text coverage.  Set the bit in the ITU SWINTR register. */
	MOV	#1, R14						
	MOV 	#0872E0H, R15				
	MOV.B	R14, [R15]					
	NOP								
	NOP								
	
	/* Restore the clobbered registers. */
	POPM	R14-R15						
	
	/* Now compare each register to ensure it still contains the value that was
	set before this loop was entered. */
	CMP	#1, R1						
	BNE	RegTest1Error				
	CMP	#2, R2						
	BNE	RegTest1Error				
	CMP	#3, R3						
	BNE	RegTest1Error				
	CMP	#4, R4						
	BNE	RegTest1Error				
	CMP	#5, R5						
	BNE	RegTest1Error				
	CMP	#6, R6						
	BNE	RegTest1Error				
	CMP	#7, R7						
	BNE	RegTest1Error				
	CMP	#8, R8						
	BNE	RegTest1Error				
	CMP	#9, R9						
	BNE	RegTest1Error				
	CMP	#10, R10					
	BNE	RegTest1Error				
	CMP	#11, R11					
	BNE	RegTest1Error				
	CMP	#12, R12					
	BNE	RegTest1Error				
	CMP	#13, R13					
	BNE	RegTest1Error				
	CMP	#14, R14					
	BNE	RegTest1Error				
	CMP	#15, R15					
	BNE	RegTest1Error				

	/* All comparisons passed, start a new itteratio of this loop. */
	BRA		TestLoop1				
	
RegTest1Error:							
	/* A compare failed, just loop here so the loop counter stops incrementing
	- causing the check task to indicate the error. */
	BRA RegTest1Error					  
/*-----------------------------------------------------------*/

/* This function is explained in the comments at the top of main.c. */
_prvRegTest2Implementation:

	/* Put a known value in each register. */
	MOV	#10H, R1					
	MOV	#20H, R2					
	MOV	#30H, R3					
	MOV	#40H, R4					
	MOV	#50H, R5					
	MOV	#60H, R6					
	MOV	#70H, R7					
	MOV	#80H, R8					
	MOV	#90H, R9					
	MOV	#100H, R10					
	MOV	#110H, R11					
	MOV	#120H, R12					
	MOV	#130H, R13					
	MOV	#140H, R14					
	MOV	#150H, R15					
	
	/* Loop, checking each itteration that each register still contains the
	expected value. */
TestLoop2:								

	/* Push the registers that are going to get clobbered. */
	PUSHM	R14-R15						
	
	/* Increment the loop counter to show this task is still getting CPU time. */
	MOV	#_ulRegTest2CycleCount, R14	
	MOV	[ R14 ], R15				
	ADD	#1, R15						
	MOV	R15, [ R14 ]				
	
	/* Restore the clobbered registers. */
	POPM	R14-R15						
	
	/* Now compare each register to ensure it still contains the value that was
	set before this loop was entered. */
	CMP	#10H, R1					
	BNE	RegTest2Error				
	CMP	#20H, R2					
	BNE	RegTest2Error				
	CMP	#30H, R3					
	BNE	RegTest2Error				
	CMP	#40H, R4					
	BNE	RegTest2Error				
	CMP	#50H, R5					
	BNE	RegTest2Error				
	CMP	#60H, R6					
	BNE	RegTest2Error				
	CMP	#70H, R7					
	BNE	RegTest2Error				
	CMP	#80H, R8					
	BNE	RegTest2Error				
	CMP	#90H, R9					
	BNE	RegTest2Error				
	CMP	#100H, R10					
	BNE	RegTest2Error				
	CMP	#110H, R11					
	BNE	RegTest2Error				
	CMP	#120H, R12					
	BNE	RegTest2Error				
	CMP	#130H, R13					
	BNE	RegTest2Error				
	CMP	#140H, R14					
	BNE	RegTest2Error				
	CMP	#150H, R15					
	BNE	RegTest2Error				

	/* All comparisons passed, start a new itteratio of this loop. */
	BRA	TestLoop2					
	
RegTest2Error:							
	/* A compare failed, just loop here so the loop counter stops incrementing
	- causing the check task to indicate the error. */
	BRA RegTest2Error					  

	
	.end
