mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
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247 lines
9.8 KiB
C
247 lines
9.8 KiB
C
/*
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FreeRTOS V8.2.2 - Copyright (C) 2015 Real Time Engineers Ltd.
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All rights reserved
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VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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***************************************************************************
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>>! NOTE: The modification to the GPL is included to allow you to !<<
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>>! distribute a combined work that includes FreeRTOS without being !<<
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>>! obliged to provide the source code for proprietary components !<<
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>>! outside of the FreeRTOS kernel. !<<
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***************************************************************************
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. Full license text is available on the following
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link: http://www.freertos.org/a00114.html
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***************************************************************************
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* *
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* FreeRTOS provides completely free yet professionally developed, *
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* robust, strictly quality controlled, supported, and cross *
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* platform software that is more than just the market leader, it *
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* is the industry's de facto standard. *
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* *
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* Help yourself get started quickly while simultaneously helping *
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* to support the FreeRTOS project by purchasing a FreeRTOS *
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* tutorial book, reference manual, or both: *
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* http://www.FreeRTOS.org/Documentation *
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* *
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***************************************************************************
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http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
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the FAQ page "My application does not run, what could be wrong?". Have you
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defined configASSERT()?
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http://www.FreeRTOS.org/support - In return for receiving this top quality
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embedded software for free we request you assist our global community by
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participating in the support forum.
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http://www.FreeRTOS.org/training - Investing in training allows your team to
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be as productive as possible as early as possible. Now you can receive
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FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
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Ltd, and the world's leading authority on the world's leading RTOS.
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http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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compatible FAT file system, and our tiny thread aware UDP/IP stack.
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http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
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Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
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http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
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Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
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licenses offer ticketed support, indemnification and commercial middleware.
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http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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engineered and independently SIL3 certified version for use in safety and
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mission critical applications that require provable dependability.
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1 tab == 4 spaces!
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*/
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#include "FreeRTOS.h"
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#include "task.h"
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/*
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* Two test tasks that fill the CPU registers with known values before
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* continuously looping round checking that each register still contains its
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* expected value. Both tasks use a separate set of values, with an incorrect
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* value being found at any time being indicative of an error in the context
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* switch mechanism. One of the tasks uses a yield instruction to increase the
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* test coverage. The nature of these tasks necessitates that they are written
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* in assembly code.
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*/
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static void vRegTest1( void *pvParameters );
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static void vRegTest2( void *pvParameters );
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/* Counters used to ensure the tasks are still running. */
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static volatile unsigned long ulRegTest1Counter = 0UL, ulRegTest2Counter = 0UL;
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/*-----------------------------------------------------------*/
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void vStartRegTestTasks( void )
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{
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xTaskCreate( vRegTest1, "RTest1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
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xTaskCreate( vRegTest2, "RTest1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
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}
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/*-----------------------------------------------------------*/
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static void vRegTest1( void *pvParameters )
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{
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__asm volatile
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(
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" mov r2, #0x02 \n" /* Fill the registers with known values, r0 is always 0 and r1 is the stack pointer. */
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" mov r3, #0x03 \n"
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" mov r4, #0x04 \n"
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" mov r5, #0x05 \n"
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" mov r6, #0x06 \n"
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" mov r7, #0x07 \n"
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" mov r8, #0x08 \n"
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" mov r9, #0x09 \n"
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" mov r10, #0x0a \n"
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" mov r11, #0x0b \n"
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" mov r12, #0x0c \n"
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" mov r13, #0x0d \n"
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" mov r14, #0x0e \n"
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" mov r15, #0x0f \n"
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" \n"
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"reg_check_loop_1: \n"
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" trap #31 \n"
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" cmp r2, #0x02 \n" /* Check that each register still contains the expected value, jump to an infinite loop if an error is found. */
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" bne.s reg_check_error_1 \n"
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" cmp r3, #0x03 \n"
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" bne.s reg_check_error_1 \n"
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" cmp r4, #0x04 \n"
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" bne.s reg_check_error_1 \n"
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" cmp r5, #0x05 \n"
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" bne.s reg_check_error_1 \n"
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" cmp r6, #0x06 \n"
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" bne.s reg_check_error_1 \n"
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" cmp r7, #0x07 \n"
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" bne.s reg_check_error_1 \n"
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" cmp r8, #0x08 \n"
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" bne.s reg_check_error_1 \n"
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" cmp r9, #0x09 \n"
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" bne.s reg_check_error_1 \n"
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" cmp r10, #0x0a \n"
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" bne.s reg_check_error_1 \n"
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" cmp r11, #0x0b \n"
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" bne.s reg_check_error_1 \n"
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" cmp r12, #0x0c \n"
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" bne.s reg_check_error_1 \n"
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" cmp r13, #0x0d \n"
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" bne.s reg_check_error_1 \n"
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" cmp r14, #0x0e \n"
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" bne.s reg_check_error_1 \n"
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" cmp r15, #0x0f \n"
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" bne.s reg_check_error_1 \n"
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" \n"
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" ld r2, [r0]+short(ulRegTest1Counter) \n" /* Increment the loop counter to show that this task is still running error free. */
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" add r2, #1 \n"
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" st r2, [r0]+short(ulRegTest1Counter) \n"
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" mov r2, #0x02 \n"
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" \n"
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" bra.s reg_check_loop_1 \n" /* Do it all again. */
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" \n"
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"reg_check_error_1: \n"
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"bra.s . \n"
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);
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}
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/*-----------------------------------------------------------*/
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static void vRegTest2( void *pvParameters )
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{
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__asm volatile
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(
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" mov r2, #0x12 \n" /* Fill the registers with known values, r0 is always 0 and r1 is the stack pointer. */
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" mov r3, #0x13 \n"
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" mov r4, #0x14 \n"
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" mov r5, #0x15 \n"
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" mov r6, #0x16 \n"
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" mov r7, #0x17 \n"
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" mov r8, #0x18 \n"
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" mov r9, #0x19 \n"
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" mov r10, #0x1a \n"
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" mov r11, #0x1b \n"
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" mov r12, #0x1c \n"
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" mov r13, #0x1d \n"
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" mov r14, #0x1e \n"
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" mov r15, #0x1f \n"
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" \n"
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"reg_check_loop_2: \n"
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" cmp r2, #0x12 \n" /* Check that each register still contains the expected value, jump to an infinite loop if an error is found. */
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" bne.s reg_check_error_2 \n"
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" cmp r3, #0x13 \n"
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" bne.s reg_check_error_2 \n"
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" cmp r4, #0x14 \n"
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" bne.s reg_check_error_2 \n"
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" cmp r5, #0x15 \n"
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" bne.s reg_check_error_2 \n"
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" cmp r6, #0x16 \n"
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" bne.s reg_check_error_2 \n"
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" cmp r7, #0x17 \n"
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" bne.s reg_check_error_2 \n"
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" cmp r8, #0x18 \n"
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" bne.s reg_check_error_2 \n"
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" cmp r9, #0x19 \n"
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" bne.s reg_check_error_2 \n"
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" cmp r10, #0x1a \n"
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" bne.s reg_check_error_2 \n"
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" cmp r11, #0x1b \n"
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" bne.s reg_check_error_2 \n"
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" cmp r12, #0x1c \n"
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" bne.s reg_check_error_2 \n"
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" cmp r13, #0x1d \n"
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" bne.s reg_check_error_2 \n"
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" cmp r14, #0x1e \n"
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" bne.s reg_check_error_2 \n"
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" cmp r15, #0x1f \n"
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" bne.s reg_check_error_2 \n"
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" \n"
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" ld r2, [r0]+short(ulRegTest2Counter) \n" /* Increment the loop counter to show that this task is still running error free. */
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" add r2, #1 \n"
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" st r2, [r0]+short(ulRegTest2Counter) \n"
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" mov r2, #0x12 \n"
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" \n"
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" bra.s reg_check_loop_2 \n" /* Do it all again. */
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" \n"
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"reg_check_error_2: \n"
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"bra.s . \n"
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);
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}
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/*-----------------------------------------------------------*/
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portBASE_TYPE xAreRegTestTasksStillRunning( void )
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{
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static unsigned long ulLastCounter1 = 0UL, ulLastCounter2 = 0UL;
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long lReturn;
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/* Check that both loop counters are still incrementing, indicating that
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both reg test tasks are still running error free. */
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if( ulLastCounter1 == ulRegTest1Counter )
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{
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lReturn = pdFAIL;
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}
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else if( ulLastCounter2 == ulRegTest2Counter )
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{
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lReturn = pdFAIL;
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}
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else
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{
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lReturn = pdPASS;
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}
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ulLastCounter1 = ulRegTest1Counter;
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ulLastCounter2 = ulRegTest2Counter;
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return lReturn;
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}
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