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/*
FreeRTOS V8.0.1 - Copyright (C) 2014 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
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 from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
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.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and 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!
*/
/*
* "Reg test" tasks - These fill the registers with known values, then check
* that each register maintains its expected value for the lifetime of the
* task. Each task uses a different set of values. The reg test tasks execute
* with a very low priority, so get preempted very frequently. A register
* containing an unexpected value is indicative of an error in the context
* switching mechanism.
*/
void vRegTest1Task( void ) __attribute__((naked));
void vRegTest2Task( void ) __attribute__((naked));
void vRegTest1Task( void )
{
__asm volatile
(
".extern ulRegTest1LoopCounter \n"
" \n"
" /* Fill the core registers with known values. */ \n"
" movs r1, #101 \n"
" movs r2, #102 \n"
" movs r3, #103 \n"
" movs r4, #104 \n"
" movs r5, #105 \n"
" movs r6, #106 \n"
" movs r7, #107 \n"
" movs r0, #108 \n"
" mov r8, r0 \n"
" movs r0, #109 \n"
" mov r9, r0 \n"
" movs r0, #110 \n"
" mov r10, r0 \n"
" movs r0, #111 \n"
" mov r11, r0 \n"
" movs r0, #112 \n"
" mov r12, r0 \n"
" movs r0, #100 \n"
" \n"
"reg1_loop: \n"
" \n"
" cmp r0, #100 \n"
" bne reg1_error_loop \n"
" cmp r1, #101 \n"
" bne reg1_error_loop \n"
" cmp r2, #102 \n"
" bne reg1_error_loop \n"
" cmp r3, #103 \n"
" bne reg1_error_loop \n"
" cmp r4, #104 \n"
" bne reg1_error_loop \n"
" cmp r5, #105 \n"
" bne reg1_error_loop \n"
" cmp r6, #106 \n"
" bne reg1_error_loop \n"
" cmp r7, #107 \n"
" bne reg1_error_loop \n"
" movs r0, #108 \n"
" cmp r8, r0 \n"
" bne reg1_error_loop \n"
" movs r0, #109 \n"
" cmp r9, r0 \n"
" bne reg1_error_loop \n"
" movs r0, #110 \n"
" cmp r10, r0 \n"
" bne reg1_error_loop \n"
" movs r0, #111 \n"
" cmp r11, r0 \n"
" bne reg1_error_loop \n"
" movs r0, #112 \n"
" cmp r12, r0 \n"
" bne reg1_error_loop \n"
" \n"
" /* Everything passed, increment the loop counter. */ \n"
" push { r1 } \n"
" ldr r0, =ulRegTest1LoopCounter \n"
" ldr r1, [r0] \n"
" add r1, r1, #1 \n"
" str r1, [r0] \n"
" \n"
" /* Yield to increase test coverage. */ \n"
" movs r0, #0x01 \n"
" ldr r1, =0xe000ed04 \n" /*NVIC_INT_CTRL */
" lsl r0, #28 \n" /* Shift to PendSV bit */
" str r0, [r1] \n"
" dsb \n"
" pop { r1 } \n"
" \n"
" /* Start again. */ \n"
" movs r0, #100 \n"
" b reg1_loop \n"
" \n"
"reg1_error_loop: \n"
" /* If this line is hit then there was an error in a core register value. \n"
" The loop ensures the loop counter stops incrementing. */ \n"
" b reg1_error_loop \n"
" nop \n"
);
}
/*-----------------------------------------------------------*/
void vRegTest2Task( void )
{
__asm volatile
(
".extern ulRegTest2LoopCounter \n"
" \n"
" /* Fill the core registers with known values. */ \n"
" movs r1, #1 \n"
" movs r2, #2 \n"
" movs r3, #3 \n"
" movs r4, #4 \n"
" movs r5, #5 \n"
" movs r6, #6 \n"
" movs r7, #7 \n"
" movs r0, #8 \n"
" movs r8, r0 \n"
" movs r0, #9 \n"
" mov r9, r0 \n"
" movs r0, #10 \n"
" mov r10, r0 \n"
" movs r0, #11 \n"
" mov r11, r0 \n"
" movs r0, #12 \n"
" mov r12, r0 \n"
" movs r0, #10 \n"
" \n"
"reg2_loop: \n"
" \n"
" cmp r0, #10 \n"
" bne reg2_error_loop \n"
" cmp r1, #1 \n"
" bne reg2_error_loop \n"
" cmp r2, #2 \n"
" bne reg2_error_loop \n"
" cmp r3, #3 \n"
" bne reg2_error_loop \n"
" cmp r4, #4 \n"
" bne reg2_error_loop \n"
" cmp r5, #5 \n"
" bne reg2_error_loop \n"
" cmp r6, #6 \n"
" bne reg2_error_loop \n"
" cmp r7, #7 \n"
" bne reg2_error_loop \n"
" movs r0, #8 \n"
" cmp r8, r0 \n"
" bne reg2_error_loop \n"
" movs r0, #9 \n"
" cmp r9, r0 \n"
" bne reg2_error_loop \n"
" movs r0, #10 \n"
" cmp r10, r0 \n"
" bne reg2_error_loop \n"
" movs r0, #11 \n"
" cmp r11, r0 \n"
" bne reg2_error_loop \n"
" movs r0, #12 \n"
" cmp r12, r0 \n"
" bne reg2_error_loop \n"
" \n"
" /* Everything passed, increment the loop counter. */ \n"
" push { r1 } \n"
" ldr r0, =ulRegTest2LoopCounter \n"
" ldr r1, [r0] \n"
" add r1, r1, #1 \n"
" str r1, [r0] \n"
" pop { r1 } \n"
" \n"
" /* Start again. */ \n"
" movs r0, #10 \n"
" b reg2_loop \n"
" \n"
"reg2_error_loop: \n"
" /* If this line is hit then there was an error in a core register value. \n"
" The loop ensures the loop counter stops incrementing. */ \n"
" b reg2_error_loop \n"
" nop \n"
);
}
/*-----------------------------------------------------------*/