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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [PPC405_FPU_Xilinx_Virtex4_GCC/] [RTOSDemo/] [main.c] - Rev 600
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/* FreeRTOS V6.1.1 - Copyright (C) 2011 Real Time Engineers Ltd. *************************************************************************** * * * If you are: * * * * + New to FreeRTOS, * * + Wanting to learn FreeRTOS or multitasking in general quickly * * + Looking for basic training, * * + Wanting to improve your FreeRTOS skills and productivity * * * * then take a look at the FreeRTOS books - available as PDF or paperback * * * * "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 * * exceptional circumstances). Thank you for your support! * * * *************************************************************************** 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. */ /* * Creates all the demo application tasks, then starts the scheduler. The WEB * documentation provides more details of the demo application tasks. * * In addition to the standard demo tasks, the follow demo specific tasks are * create: * * The "Check" task. This only executes every three seconds but has the highest * priority so is guaranteed to get processor time. Its main function is to * check that all the other tasks are still operational. Most tasks maintain * a unique count that is incremented each time the task successfully completes * its function. Should any error occur within such a task the count is * permanently halted. The check task inspects the count of each task to ensure * it has changed since the last time the check task executed. If all the count * variables have changed all the tasks are still executing error free, and the * check task toggles the onboard LED. Should any task contain an error at any time * the LED toggle rate will change from 3 seconds to 500ms. * * The "Register Check" tasks. These tasks fill the CPU registers with known * values, then check that each register still contains the expected value, the * discovery of an unexpected value being indicative of an error in the RTOS * context switch mechanism. The register check tasks operate at low priority * so are switched in and out frequently. * */ /* Scheduler includes. */ #include "FreeRTOS.h" #include "task.h" /* Xilinx library includes. */ #include "xcache_l.h" #include "xintc.h" /* Demo application includes. */ #include "flash.h" #include "integer.h" #include "comtest2.h" #include "semtest.h" #include "BlockQ.h" #include "dynamic.h" #include "GenQTest.h" #include "QPeek.h" #include "blocktim.h" #include "death.h" #include "partest.h" #include "countsem.h" #include "recmutex.h" #include "flop.h" #include "flop-reg-test.h" /* Priorities assigned to the demo tasks. */ #define mainCHECK_TASK_PRIORITY ( tskIDLE_PRIORITY + 4 ) #define mainSEM_TEST_PRIORITY ( tskIDLE_PRIORITY + 2 ) #define mainCOM_TEST_PRIORITY ( tskIDLE_PRIORITY + 1 ) #define mainQUEUE_BLOCK_PRIORITY ( tskIDLE_PRIORITY + 1 ) #define mainDEATH_PRIORITY ( tskIDLE_PRIORITY + 1 ) #define mainLED_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 ) #define mainGENERIC_QUEUE_PRIORITY ( tskIDLE_PRIORITY ) #define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 1 ) #define mainFLOP_PRIORITY ( tskIDLE_PRIORITY ) /* The first LED used by the COM test and check tasks respectively. */ #define mainCOM_TEST_LED ( 4 ) #define mainCHECK_TEST_LED ( 3 ) /* The baud rate used by the comtest tasks is set by the hardware, so the baud rate parameters passed into the comtest initialisation has no effect. */ #define mainBAUD_SET_IN_HARDWARE ( 0 ) /* Delay periods used by the check task. If no errors have been found then the check LED will toggle every mainNO_ERROR_CHECK_DELAY milliseconds. If an error has been found at any time then the toggle rate will increase to mainERROR_CHECK_DELAY milliseconds. */ #define mainNO_ERROR_CHECK_DELAY ( ( portTickType ) 3000 / portTICK_RATE_MS ) #define mainERROR_CHECK_DELAY ( ( portTickType ) 500 / portTICK_RATE_MS ) /* * The tasks defined within this file - described within the comments at the * head of this page. */ static void prvRegTestTask1( void *pvParameters ); static void prvRegTestTask2( void *pvParameters ); static void prvErrorChecks( void *pvParameters ); /* * Called by the 'check' task to inspect all the standard demo tasks within * the system, as described within the comments at the head of this page. */ static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void ); /* * Perform any hardware initialisation required by the demo application. */ static void prvSetupHardware( void ); /*-----------------------------------------------------------*/ /* xRegTestStatus will get set to pdFAIL by the regtest tasks if they discover an unexpected value. */ static volatile unsigned portBASE_TYPE xRegTestStatus = pdPASS; /* Counters used to ensure the regtest tasks are still running. */ static volatile unsigned portLONG ulRegTest1Counter = 0UL, ulRegTest2Counter = 0UL; /*-----------------------------------------------------------*/ int main( void ) { /* Must be called prior to installing any interrupt handlers! */ vPortSetupInterruptController(); /* In this case prvSetupHardware() just enables the caches and and configures the IO ports for the LED outputs. */ prvSetupHardware(); /* Start the standard demo application tasks. Note that the baud rate used by the comtest tasks is set by the hardware, so the baud rate parameter passed has no effect. */ vStartLEDFlashTasks( mainLED_TASK_PRIORITY ); vStartIntegerMathTasks( tskIDLE_PRIORITY ); vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainBAUD_SET_IN_HARDWARE, mainCOM_TEST_LED ); vStartSemaphoreTasks( mainSEM_TEST_PRIORITY ); vStartBlockingQueueTasks ( mainQUEUE_BLOCK_PRIORITY ); vStartDynamicPriorityTasks(); vStartGenericQueueTasks( mainGENERIC_QUEUE_PRIORITY ); vStartQueuePeekTasks(); vCreateBlockTimeTasks(); vStartCountingSemaphoreTasks(); vStartRecursiveMutexTasks(); #if ( configUSE_FPU == 1 ) vStartMathTasks( mainFLOP_PRIORITY ); vStartFlopRegTests(); #endif /* Create the tasks defined within this file. */ xTaskCreate( prvRegTestTask1, ( signed portCHAR * ) "Regtest1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL ); xTaskCreate( prvRegTestTask2, ( signed portCHAR * ) "Regtest2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL ); xTaskCreate( prvErrorChecks, ( signed portCHAR * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL ); /* The suicide tasks must be started last as they record the number of other tasks that exist within the system. The value is then used to ensure at run time the number of tasks that exists is within expected bounds. */ vCreateSuicidalTasks( mainDEATH_PRIORITY ); /* Now start the scheduler. Following this call the created tasks should be executing. */ vTaskStartScheduler(); /* vTaskStartScheduler() will only return if an error occurs while the idle task is being created. */ for( ;; ); return 0; } /*-----------------------------------------------------------*/ static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void ) { portBASE_TYPE lReturn = pdPASS; static unsigned portLONG ulLastRegTest1Counter= 0UL, ulLastRegTest2Counter = 0UL; /* The demo tasks maintain a count that increments every cycle of the task provided that the task has never encountered an error. This function checks the counts maintained by the tasks to ensure they are still being incremented. A count remaining at the same value between calls therefore indicates that an error has been detected. */ if( xAreIntegerMathsTaskStillRunning() != pdTRUE ) { lReturn = pdFAIL; } if( xAreComTestTasksStillRunning() != pdTRUE ) { lReturn = pdFAIL; } if( xAreSemaphoreTasksStillRunning() != pdTRUE ) { lReturn = pdFAIL; } if( xAreBlockingQueuesStillRunning() != pdTRUE ) { lReturn = pdFAIL; } if( xAreDynamicPriorityTasksStillRunning() != pdTRUE ) { lReturn = pdFAIL; } if( xIsCreateTaskStillRunning() != pdTRUE ) { lReturn = pdFAIL; } if( xAreBlockTimeTestTasksStillRunning() != pdTRUE ) { lReturn = pdFAIL; } if( xAreGenericQueueTasksStillRunning() != pdTRUE ) { lReturn = pdFAIL; } if( xAreQueuePeekTasksStillRunning() != pdTRUE ) { lReturn = pdFAIL; } if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE ) { lReturn = pdFAIL; } if( xAreRecursiveMutexTasksStillRunning() != pdTRUE ) { lReturn = pdFAIL; } #if ( configUSE_FPU == 1 ) if( xAreMathsTaskStillRunning() != pdTRUE ) { lReturn = pdFAIL; } if( xAreFlopRegisterTestsStillRunning() != pdTRUE ) { lReturn = pdFAIL; } #endif /* Have the register test tasks found any errors? */ if( xRegTestStatus != pdPASS ) { lReturn = pdFAIL; } /* Are the register test tasks still looping? */ if( ulLastRegTest1Counter == ulRegTest1Counter ) { lReturn = pdFAIL; } else { ulLastRegTest1Counter = ulRegTest1Counter; } if( ulLastRegTest2Counter == ulRegTest2Counter ) { lReturn = pdFAIL; } else { ulLastRegTest2Counter = ulRegTest2Counter; } return lReturn; } /*-----------------------------------------------------------*/ static void prvErrorChecks( void *pvParameters ) { portTickType xDelayPeriod = mainNO_ERROR_CHECK_DELAY, xLastExecutionTime; volatile unsigned portBASE_TYPE uxFreeStack; /* Just to remove compiler warning. */ ( void ) pvParameters; /* This call is just to demonstrate the use of the function - nothing is done with the value. You would expect the stack high water mark to be lower (the function to return a larger value) here at function entry than later following calls to other functions. */ uxFreeStack = uxTaskGetStackHighWaterMark( NULL ); /* Initialise xLastExecutionTime so the first call to vTaskDelayUntil() works correctly. */ xLastExecutionTime = xTaskGetTickCount(); /* Cycle for ever, delaying then checking all the other tasks are still operating without error. */ for( ;; ) { /* Again just for demo purposes - uxFreeStack should have a lower value here than following the call to uxTaskGetStackHighWaterMark() on the task entry. */ uxFreeStack = uxTaskGetStackHighWaterMark( NULL ); /* Wait until it is time to check again. The time we wait here depends on whether an error has been detected or not. When an error is detected the time is shortened resulting in a faster LED flash rate. */ vTaskDelayUntil( &xLastExecutionTime, xDelayPeriod ); /* See if the other tasks are all ok. */ if( prvCheckOtherTasksAreStillRunning() != pdPASS ) { /* An error occurred in one of the tasks so shorten the delay period - which has the effect of increasing the frequency of the LED toggle. */ xDelayPeriod = mainERROR_CHECK_DELAY; } /* Flash! */ vParTestToggleLED( mainCHECK_TEST_LED ); } } /*-----------------------------------------------------------*/ static void prvSetupHardware( void ) { XCache_EnableICache( 0x80000000 ); XCache_EnableDCache( 0x80000000 ); /* Setup the IO port for use with the LED outputs. */ vParTestInitialise(); } /*-----------------------------------------------------------*/ void prvRegTest1Pass( void ) { /* Called from the inline assembler - this cannot be static otherwise it can get optimised away. */ ulRegTest1Counter++; } /*-----------------------------------------------------------*/ void prvRegTest2Pass( void ) { /* Called from the inline assembler - this cannot be static otherwise it can get optimised away. */ ulRegTest2Counter++; } /*-----------------------------------------------------------*/ void prvRegTestFail( void ) { /* Called from the inline assembler - this cannot be static otherwise it can get optimised away. */ xRegTestStatus = pdFAIL; } /*-----------------------------------------------------------*/ static void prvRegTestTask1( void *pvParameters ) { /* Just to remove compiler warning. */ ( void ) pvParameters; /* The first register test task as described at the top of this file. The values used in the registers are different to those use in the second register test task. Also, unlike the second register test task, this task yields between setting the register values and subsequently checking the register values. */ asm volatile ( "RegTest1Start: \n\t" \ " \n\t" \ " li 0, 301 \n\t" \ " mtspr 256, 0 #USPRG0 \n\t" \ " li 0, 501 \n\t" \ " mtspr 8, 0 #LR \n\t" \ " li 0, 4 \n\t" \ " mtspr 1, 0 #XER \n\t" \ " \n\t" \ " li 0, 1 \n\t" \ " li 2, 2 \n\t" \ " li 3, 3 \n\t" \ " li 4, 4 \n\t" \ " li 5, 5 \n\t" \ " li 6, 6 \n\t" \ " li 7, 7 \n\t" \ " li 8, 8 \n\t" \ " li 9, 9 \n\t" \ " li 10, 10 \n\t" \ " li 11, 11 \n\t" \ " li 12, 12 \n\t" \ " li 13, 13 \n\t" \ " li 14, 14 \n\t" \ " li 15, 15 \n\t" \ " li 16, 16 \n\t" \ " li 17, 17 \n\t" \ " li 18, 18 \n\t" \ " li 19, 19 \n\t" \ " li 20, 20 \n\t" \ " li 21, 21 \n\t" \ " li 22, 22 \n\t" \ " li 23, 23 \n\t" \ " li 24, 24 \n\t" \ " li 25, 25 \n\t" \ " li 26, 26 \n\t" \ " li 27, 27 \n\t" \ " li 28, 28 \n\t" \ " li 29, 29 \n\t" \ " li 30, 30 \n\t" \ " li 31, 31 \n\t" \ " \n\t" \ " sc \n\t" \ " nop \n\t" \ " \n\t" \ " cmpwi 0, 1 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 2, 2 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 3, 3 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 4, 4 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 5, 5 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 6, 6 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 7, 7 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 8, 8 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 9, 9 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 10, 10 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 11, 11 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 12, 12 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 13, 13 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 14, 14 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 15, 15 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 16, 16 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 17, 17 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 18, 18 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 19, 19 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 20, 20 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 21, 21 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 22, 22 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 23, 23 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 24, 24 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 25, 25 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 26, 26 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 27, 27 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 28, 28 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 29, 29 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 30, 30 \n\t" \ " bne RegTest1Fail \n\t" \ " cmpwi 31, 31 \n\t" \ " bne RegTest1Fail \n\t" \ " \n\t" \ " mfspr 0, 256 #USPRG0 \n\t" \ " cmpwi 0, 301 \n\t" \ " bne RegTest1Fail \n\t" \ " mfspr 0, 8 #LR \n\t" \ " cmpwi 0, 501 \n\t" \ " bne RegTest1Fail \n\t" \ " mfspr 0, 1 #XER \n\t" \ " cmpwi 0, 4 \n\t" \ " bne RegTest1Fail \n\t" \ " \n\t" \ " bl prvRegTest1Pass \n\t" \ " b RegTest1Start \n\t" \ " \n\t" \ "RegTest1Fail: \n\t" \ " \n\t" \ " \n\t" \ " bl prvRegTestFail \n\t" \ " b RegTest1Start \n\t" \ ); } /*-----------------------------------------------------------*/ static void prvRegTestTask2( void *pvParameters ) { /* Just to remove compiler warning. */ ( void ) pvParameters; /* The second register test task as described at the top of this file. Note that this task fills the registers with different values to the first register test task. */ asm volatile ( "RegTest2Start: \n\t" \ " \n\t" \ " li 0, 300 \n\t" \ " mtspr 256, 0 #USPRG0 \n\t" \ " li 0, 500 \n\t" \ " mtspr 8, 0 #LR \n\t" \ " li 0, 4 \n\t" \ " mtspr 1, 0 #XER \n\t" \ " \n\t" \ " li 0, 11 \n\t" \ " li 2, 12 \n\t" \ " li 3, 13 \n\t" \ " li 4, 14 \n\t" \ " li 5, 15 \n\t" \ " li 6, 16 \n\t" \ " li 7, 17 \n\t" \ " li 8, 18 \n\t" \ " li 9, 19 \n\t" \ " li 10, 110 \n\t" \ " li 11, 111 \n\t" \ " li 12, 112 \n\t" \ " li 13, 113 \n\t" \ " li 14, 114 \n\t" \ " li 15, 115 \n\t" \ " li 16, 116 \n\t" \ " li 17, 117 \n\t" \ " li 18, 118 \n\t" \ " li 19, 119 \n\t" \ " li 20, 120 \n\t" \ " li 21, 121 \n\t" \ " li 22, 122 \n\t" \ " li 23, 123 \n\t" \ " li 24, 124 \n\t" \ " li 25, 125 \n\t" \ " li 26, 126 \n\t" \ " li 27, 127 \n\t" \ " li 28, 128 \n\t" \ " li 29, 129 \n\t" \ " li 30, 130 \n\t" \ " li 31, 131 \n\t" \ " \n\t" \ " cmpwi 0, 11 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 2, 12 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 3, 13 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 4, 14 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 5, 15 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 6, 16 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 7, 17 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 8, 18 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 9, 19 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 10, 110 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 11, 111 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 12, 112 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 13, 113 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 14, 114 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 15, 115 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 16, 116 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 17, 117 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 18, 118 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 19, 119 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 20, 120 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 21, 121 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 22, 122 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 23, 123 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 24, 124 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 25, 125 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 26, 126 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 27, 127 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 28, 128 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 29, 129 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 30, 130 \n\t" \ " bne RegTest2Fail \n\t" \ " cmpwi 31, 131 \n\t" \ " bne RegTest2Fail \n\t" \ " \n\t" \ " mfspr 0, 256 #USPRG0 \n\t" \ " cmpwi 0, 300 \n\t" \ " bne RegTest2Fail \n\t" \ " mfspr 0, 8 #LR \n\t" \ " cmpwi 0, 500 \n\t" \ " bne RegTest2Fail \n\t" \ " mfspr 0, 1 #XER \n\t" \ " cmpwi 0, 4 \n\t" \ " bne RegTest2Fail \n\t" \ " \n\t" \ " bl prvRegTest2Pass \n\t" \ " b RegTest2Start \n\t" \ " \n\t" \ "RegTest2Fail: \n\t" \ " \n\t" \ " \n\t" \ " bl prvRegTestFail \n\t" \ " b RegTest2Start \n\t" \ ); } /*-----------------------------------------------------------*/ /* This hook function will get called if there is a suspected stack overflow. An overflow can cause the task name to be corrupted, in which case the task handle needs to be used to determine the offending task. */ void vApplicationStackOverflowHook( xTaskHandle xTask, signed portCHAR *pcTaskName ); void vApplicationStackOverflowHook( xTaskHandle xTask, signed portCHAR *pcTaskName ) { /* To prevent the optimiser removing the variables. */ volatile xTaskHandle xTaskIn = xTask; volatile signed portCHAR *pcTaskNameIn = pcTaskName; /* Remove compiler warnings. */ ( void ) xTaskIn; ( void ) pcTaskNameIn; /* The following three calls are simply to stop compiler warnings about the functions not being used - they are called from the inline assembly. */ prvRegTest1Pass(); prvRegTest2Pass(); prvRegTestFail(); for( ;; ); }
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