/*
    FreeRTOS V9.0.0 - Copyright (C) 2016 Real Time Engineers Ltd.
    All rights reserved

    VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

    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 modification 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.  Full license text is available on the following
    link: http://www.freertos.org/a00114.html

    ***************************************************************************
     *                                                                       *
     *    FreeRTOS provides completely free yet professionally developed,    *
     *    robust, strictly quality controlled, supported, and cross          *
     *    platform software that is more than just the market leader, it     *
     *    is the industry's de facto standard.                               *
     *                                                                       *
     *    Help yourself get started quickly while simultaneously helping     *
     *    to support the FreeRTOS project by purchasing a FreeRTOS           *
     *    tutorial book, reference manual, or both:                          *
     *    http://www.FreeRTOS.org/Documentation                              *
     *                                                                       *
    ***************************************************************************

    http://www.FreeRTOS.org/FAQHelp.html - Having a problem?  Start by reading
    the FAQ page "My application does not run, what could be wrong?".  Have you
    defined configASSERT()?

    http://www.FreeRTOS.org/support - In return for receiving this top quality
    embedded software for free we request you assist our global community by
    participating in the support forum.

    http://www.FreeRTOS.org/training - Investing in training allows your team to
    be as productive as possible as early as possible.  Now you can receive
    FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
    Ltd, and the world's leading authority on the world's leading RTOS.

    http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
    including FreeRTOS+Trace - an indispensable productivity tool, a DOS
    compatible FAT file system, and our tiny thread aware UDP/IP stack.

    http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
    Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.

    http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
    Integrity Systems ltd. to sell under the OpenRTOS brand.  Low cost OpenRTOS
    licenses offer ticketed support, indemnification and commercial middleware.

    http://www.SafeRTOS.com - High Integrity Systems also provide a safety
    engineered and independently SIL3 certified version for use in safety and
    mission critical applications that require provable dependability.

    1 tab == 4 spaces!
*/

.file "RegTest.S"
#include "FreeRTOSConfig.h"
#include "ISR_Support.h"

	.extern ulRegTest1Counter
	.extern ulRegTest2Counter
	.extern dRegTest1_st7
	.extern dRegTest1_st6
	.extern dRegTest1_st5
	.extern dRegTest1_st4
	.extern dRegTest1_st3
	.extern dRegTest1_st2
	.extern dRegTest1_st1
	.extern dRegTest2_st7
	.extern dRegTest2_st6
	.extern dRegTest2_st5
	.extern dRegTest2_st4
	.extern dRegTest2_st3
	.extern dRegTest2_st2
	.extern dRegTest2_st1
	.extern vGenerateYieldInterrupt
	.extern vHPETIRQHandler1
	
	.global vRegTest1
	.global vRegTest2
	.global vApplicationHPETTimer1Wrapper

	.section .text.last /* Push up the memory to check executing from higher memory addresses. */
	.align 4

.func vRegTest1
vRegTest1:

	/* Set initial values into the general purpose registers. */
	movl 	$0x11111111, %eax
	movl 	$0x22222222, %ebx
	movl 	$0x33333333, %ecx
	movl 	$0x44444444, %edx
	movl 	$0x55555555, %esi
	movl 	$0x66666666, %edi

	/* Set initial values into the floating point registers. */
	.if configSUPPORT_FPU == 1
		fldl 	dRegTest1_st7
		fldl 	dRegTest1_st6
		fldl 	dRegTest1_st5
		fldl 	dRegTest1_st4
		fldl 	dRegTest1_st3
		fldl 	dRegTest1_st2
		fldl 	dRegTest1_st1
	.endif /* configSUPPORT_FPU */

_RegTest1Loop:

	/* Loop checking the values originally loaded into the general purpose
	registers remain through the life of the task. */
	cmp 	$0x11111111, %eax
	jne 	_RegTest1Error
	cmp 	$0x22222222, %ebx
	jne 	_RegTest1Error
	cmp 	$0x33333333, %ecx
	jne 	_RegTest1Error
	cmp 	$0x44444444, %edx
	jne 	_RegTest1Error
	cmp 	$0x55555555, %esi
	jne 	_RegTest1Error
	cmp 	$0x66666666, %edi
	jne 	_RegTest1Error


	.if configSUPPORT_FPU == 1
		/* Loop checking the values originally loaded into the floating point
		registers remain through the life of the task. */
		push 	%eax			/* push clobbered register. */
		fldl 	dRegTest1_st7 	/* st( 0 ) set to st( 7 ) value. */
		fucomp 	%st( 7 ) 		/* Compare st( 0 ) with st( 7 ) and pop. */
		fnstsw 	%ax				/* Copy status word to ax. */
		and 	$0x45, %ah		/* Mask bits. */
		xor 	$0x40, %ah		/* test bits. */
		jne 	_RegTest1Error
		fldl 	dRegTest1_st6
		fucomp 	%st( 6 )
		fnstsw 	%ax
		and 	$0x45, %ah
		xor 	$0x40, %ah
		jne 	_RegTest1Error
		fldl 	dRegTest1_st5
		fucomp 	%st( 5 )
		fnstsw 	%ax
		and 	$0x45, %ah
		xor 	$0x40, %ah
		jne 	_RegTest1Error
		fldl 	dRegTest1_st4
		fucomp 	%st( 4 )
		fnstsw 	%ax
		and 	$0x45, %ah
		xor 	$0x40, %ah
		jne 	_RegTest1Error
		fldl 	dRegTest1_st3
		fucomp 	%st( 3 )
		fnstsw 	%ax
		and 	$0x45, %ah
		xor 	$0x40, %ah
		jne 	_RegTest1Error
		fldl 	dRegTest1_st2
		fucomp 	%st( 2 )
		fnstsw 	%ax
		and 	$0x45, %ah
		xor 	$0x40, %ah
		jne 	_RegTest1Error
		fldl 	dRegTest1_st1
		fucomp 	%st( 1 )
		fnstsw 	%ax
		and 	$0x45, %ah
		xor 	$0x40, %ah
		jne 	_RegTest1Error

		/* Restore clobbered register. */
		pop 	%eax
	.endif /* configSUPPORT_FPU */

	/* Incrememnt the loop counter to prove this task has not gone into the
	error null loop. */
	add 	$1, ulRegTest1Counter

	/* Loop again. */
	jmp 	_RegTest1Loop

_RegTest1Error:
	jmp		.
.endfunc
/*-----------------------------------------------------------*/

.func vRegTest2
vRegTest2:

	/* Set initial values into the general purpose registers. */
	movl 	$0x10101010, %eax
	movl 	$0x20202020, %ebx
	movl 	$0x30303030, %ecx
	movl 	$0x40404040, %edx
	movl 	$0x50505050, %esi
	movl 	$0x60606060, %edi

	/* Set initial values into the floating point registers. */
	.if configSUPPORT_FPU == 1
		fldl 	dRegTest2_st7
		fldl 	dRegTest2_st6
		fldl 	dRegTest2_st5
		fldl 	dRegTest2_st4
		fldl 	dRegTest2_st3
		fldl 	dRegTest2_st2
		fldl 	dRegTest2_st1
	.endif

_RegTest2Loop:

	/* Loop checking the values originally loaded into the general purpose
	registers remain through the life of the task. */
	cmp 	$0x10101010, %eax
	jne 	_RegTest2Error
	cmp 	$0x20202020, %ebx
	jne 	_RegTest2Error
	cmp 	$0x30303030, %ecx
	jne 	_RegTest2Error
	cmp 	$0x40404040, %edx
	jne 	_RegTest2Error
	cmp 	$0x50505050, %esi
	jne 	_RegTest2Error
	cmp 	$0x60606060, %edi
	jne 	_RegTest1Error

	.if configSUPPORT_FPU == 1
		/* Loop checking the values originally loaded into the floating point
		registers remain through the life of the task. */
		/* Loop checking the values originally loaded into the floating point
		registers remain through the life of the task. */
		push 	%eax			/* push clobbered register. */
		fldl 	dRegTest2_st7 			/* st( 0 ) set to st( 7 ) value. */
		fucomp 	%st( 7 ) 		/* Compare st( 0 ) with st( 7 ) and pop. */
		fnstsw 	%ax				/* Copy status word to ax. */
		and 	$0x45, %ah		/* Mask bits. */
		xor 	$0x40, %ah		/* test bits. */
		jne 	_RegTest1Error
		fldl 	dRegTest2_st6
		fucomp 	%st( 6 )
		fnstsw 	%ax
		and 	$0x45, %ah
		xor 	$0x40, %ah
		jne 	_RegTest1Error
		fldl 	dRegTest2_st5
		fucomp 	%st( 5 )
		fnstsw 	%ax
		and 	$0x45, %ah
		xor 	$0x40, %ah
		jne 	_RegTest1Error
		fldl 	dRegTest2_st4
		fucomp 	%st( 4 )
		fnstsw 	%ax
		and 	$0x45, %ah
		xor 	$0x40, %ah
		jne 	_RegTest1Error
		fldl 	dRegTest2_st3
		fucomp 	%st( 3 )
		fnstsw 	%ax
		and 	$0x45, %ah
		xor 	$0x40, %ah
		jne 	_RegTest1Error
		fldl 	dRegTest2_st2
		fucomp 	%st( 2 )
		fnstsw 	%ax
		and 	$0x45, %ah
		xor 	$0x40, %ah
		jne 	_RegTest1Error
		fldl 	dRegTest2_st1
		fucomp 	%st( 1 )
		fnstsw 	%ax
		and 	$0x45, %ah
		xor 	$0x40, %ah
		jne 	_RegTest1Error

		/* Restore clobbered register. */
		pop 	%eax

	.endif /* configSUPPORT_FPU */

	/* Force a yield from one of the reg test tasks to increase coverage. */
	call vGenerateYieldInterrupt

	/* Increment the loop counter to prove this task has not entered the error
	null loop. */
	add 	$1, ulRegTest2Counter
	jmp 	_RegTest2Loop

_RegTest2Error:
	jmp 	.

.endfunc

/*-----------------------------------------------------------*/

/* Purely for demonstration purposes, two of the HPET timers used by the
IntQueue test use the central interrupt handler, and timer 1 uses its own
assembly wrapper - which is defined below.  See
http://www.freertos.org/RTOS_Intel_Quark_Galileo_GCC.html#interrupts for more
information. */
.func vApplicationHPETTimer1Wrapper
vApplicationHPETTimer1Wrapper:

	portFREERTOS_INTERRUPT_ENTRY
	call vHPETIRQHandler1
	portFREERTOS_INTERRUPT_EXIT

.endfunc

.end