git.sur5r.net Git - freertos/blob - FreeRTOS/Demo/PPC405_Xilinx_Virtex4_GCC/RTOSDemo/main.c

   1 /*\r
   2     FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.\r
   3         \r
   4 \r
   5     ***************************************************************************\r
   6      *                                                                       *\r
   7      *    FreeRTOS tutorial books are available in pdf and paperback.        *\r
   8      *    Complete, revised, and edited pdf reference manuals are also       *\r
   9      *    available.                                                         *\r
  10      *                                                                       *\r
  11      *    Purchasing FreeRTOS documentation will not only help you, by       *\r
  12      *    ensuring you get running as quickly as possible and with an        *\r
  13      *    in-depth knowledge of how to use FreeRTOS, it will also help       *\r
  14      *    the FreeRTOS project to continue with its mission of providing     *\r
  15      *    professional grade, cross platform, de facto standard solutions    *\r
  16      *    for microcontrollers - completely free of charge!                  *\r
  17      *                                                                       *\r
  18      *    >>> See http://www.FreeRTOS.org/Documentation for details. <<<     *\r
  19      *                                                                       *\r
  20      *    Thank you for using FreeRTOS, and thank you for your support!      *\r
  21      *                                                                       *\r
  22     ***************************************************************************\r
  23 \r
  24 \r
  25     This file is part of the FreeRTOS distribution.\r
  26 \r
  27     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  28     the terms of the GNU General Public License (version 2) as published by the\r
  29     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
  30     >>>NOTE<<< The modification to the GPL is included to allow you to\r
  31     distribute a combined work that includes FreeRTOS without being obliged to\r
  32     provide the source code for proprietary components outside of the FreeRTOS\r
  33     kernel.  FreeRTOS is distributed in the hope that it will be useful, but\r
  34     WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\r
  35     or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
  36     more details. You should have received a copy of the GNU General Public\r
  37     License and the FreeRTOS license exception along with FreeRTOS; if not it\r
  38     can be viewed here: http://www.freertos.org/a00114.html and also obtained\r
  39     by writing to Richard Barry, contact details for whom are available on the\r
  40     FreeRTOS WEB site.\r
  41 \r
  42     1 tab == 4 spaces!\r
  43     \r
  44     ***************************************************************************\r
  45      *                                                                       *\r
  46      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  47      *    not run, what could be wrong?                                      *\r
  48      *                                                                       *\r
  49      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  50      *                                                                       *\r
  51     ***************************************************************************\r
  52 \r
  53     \r
  54     http://www.FreeRTOS.org - Documentation, training, latest information, \r
  55     license and contact details.\r
  56     \r
  57     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  58     including FreeRTOS+Trace - an indispensable productivity tool.\r
  59 \r
  60     Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell \r
  61     the code with commercial support, indemnification, and middleware, under \r
  62     the OpenRTOS brand: http://www.OpenRTOS.com.  High Integrity Systems also\r
  63     provide a safety engineered and independently SIL3 certified version under \r
  64     the SafeRTOS brand: http://www.SafeRTOS.com.\r
  65 */\r
  66 \r
  67 /*\r
  68  * Creates all the demo application tasks, then starts the scheduler.  The WEB\r
  69  * documentation provides more details of the demo application tasks.\r
  70  * \r
  71  * In addition to the standard demo tasks, the follow demo specific tasks are\r
  72  * create:\r
  73  *\r
  74  * The "Check" task.  This only executes every three seconds but has the highest \r
  75  * priority so is guaranteed to get processor time.  Its main function is to \r
  76  * check that all the other tasks are still operational.  Most tasks maintain \r
  77  * a unique count that is incremented each time the task successfully completes \r
  78  * its function.  Should any error occur within such a task the count is \r
  79  * permanently halted.  The check task inspects the count of each task to ensure \r
  80  * it has changed since the last time the check task executed.  If all the count \r
  81  * variables have changed all the tasks are still executing error free, and the \r
  82  * check task toggles the onboard LED.  Should any task contain an error at any time \r
  83  * the LED toggle rate will change from 3 seconds to 500ms.\r
  84  *\r
  85  * The "Register Check" tasks.  These tasks fill the CPU registers with known\r
  86  * values, then check that each register still contains the expected value, the\r
  87  * discovery of an unexpected value being indicative of an error in the RTOS\r
  88  * context switch mechanism.  The register check tasks operate at low priority\r
  89  * so are switched in and out frequently.\r
  90  *\r
  91  */\r
  92 \r
  93 /* Scheduler includes. */\r
  94 #include "FreeRTOS.h"\r
  95 #include "task.h"\r
  96 \r
  97 /* Xilinx library includes. */\r
  98 #include "xcache_l.h"\r
  99 #include "xintc.h"\r
 100 \r
 101 /* Demo application includes. */\r
 102 #include "flash.h"\r
 103 #include "integer.h"\r
 104 #include "comtest2.h"\r
 105 #include "semtest.h"\r
 106 #include "BlockQ.h"\r
 107 #include "dynamic.h"\r
 108 #include "GenQTest.h"\r
 109 #include "QPeek.h"\r
 110 #include "blocktim.h"\r
 111 #include "death.h"\r
 112 #include "partest.h"\r
 113 #include "countsem.h"\r
 114 #include "recmutex.h"\r
 115 #include "flop.h"\r
 116 #include "flop-reg-test.h"\r
 117 \r
 118 /* Priorities assigned to the demo tasks. */\r
 119 #define mainCHECK_TASK_PRIORITY                 ( tskIDLE_PRIORITY + 4 )\r
 120 #define mainSEM_TEST_PRIORITY                   ( tskIDLE_PRIORITY + 2 )\r
 121 #define mainCOM_TEST_PRIORITY                   ( tskIDLE_PRIORITY + 1 )\r
 122 #define mainQUEUE_BLOCK_PRIORITY                ( tskIDLE_PRIORITY + 1 )\r
 123 #define mainDEATH_PRIORITY                              ( tskIDLE_PRIORITY + 1 )\r
 124 #define mainLED_TASK_PRIORITY                   ( tskIDLE_PRIORITY + 1 )\r
 125 #define mainGENERIC_QUEUE_PRIORITY              ( tskIDLE_PRIORITY )\r
 126 #define mainQUEUE_POLL_PRIORITY                 ( tskIDLE_PRIORITY + 1 )\r
 127 #define mainFLOP_PRIORITY                               ( tskIDLE_PRIORITY )\r
 128 \r
 129 /* The first LED used by the COM test and check tasks respectively. */\r
 130 #define mainCOM_TEST_LED                                ( 4 )\r
 131 #define mainCHECK_TEST_LED                              ( 3 )\r
 132 \r
 133 /* The baud rate used by the comtest tasks is set by the hardware, so the\r
 134 baud rate parameters passed into the comtest initialisation has no effect. */\r
 135 #define mainBAUD_SET_IN_HARDWARE                ( 0 )\r
 136 \r
 137 /* Delay periods used by the check task.  If no errors have been found then\r
 138 the check LED will toggle every mainNO_ERROR_CHECK_DELAY milliseconds.  If an\r
 139 error has been found at any time then the toggle rate will increase to \r
 140 mainERROR_CHECK_DELAY milliseconds. */\r
 141 #define mainNO_ERROR_CHECK_DELAY                ( ( portTickType ) 3000 / portTICK_RATE_MS  )\r
 142 #define mainERROR_CHECK_DELAY                   ( ( portTickType ) 500 / portTICK_RATE_MS  )\r
 143 \r
 144 \r
 145 /* \r
 146  * The tasks defined within this file - described within the comments at the\r
 147  * head of this page. \r
 148  */\r
 149 static void prvRegTestTask1( void *pvParameters );\r
 150 static void prvRegTestTask2( void *pvParameters );\r
 151 static void prvErrorChecks( void *pvParameters );\r
 152 \r
 153 /*\r
 154  * Called by the 'check' task to inspect all the standard demo tasks within\r
 155  * the system, as described within the comments at the head of this page.\r
 156  */\r
 157 static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void );\r
 158 \r
 159 /*\r
 160  * Perform any hardware initialisation required by the demo application.\r
 161  */\r
 162 static void prvSetupHardware( void );\r
 163 \r
 164 /*-----------------------------------------------------------*/\r
 165 \r
 166 /* xRegTestStatus will get set to pdFAIL by the regtest tasks if they\r
 167 discover an unexpected value. */\r
 168 static volatile unsigned portBASE_TYPE xRegTestStatus = pdPASS;\r
 169 \r
 170 /* Counters used to ensure the regtest tasks are still running. */\r
 171 static volatile unsigned portLONG ulRegTest1Counter = 0UL, ulRegTest2Counter = 0UL;\r
 172 \r
 173 /*-----------------------------------------------------------*/\r
 174 \r
 175 int main( void )\r
 176 {\r
 177 \r
 178         /* Must be called prior to installing any interrupt handlers! */\r
 179         vPortSetupInterruptController();\r
 180 \r
 181         /* In this case prvSetupHardware() just enables the caches and and\r
 182         configures the IO ports for the LED outputs. */\r
 183         prvSetupHardware();\r
 184 \r
 185         /* Start the standard demo application tasks.  Note that the baud rate used\r
 186         by the comtest tasks is set by the hardware, so the baud rate parameter\r
 187         passed has no effect. */\r
 188         vStartLEDFlashTasks( mainLED_TASK_PRIORITY );   \r
 189         vStartIntegerMathTasks( tskIDLE_PRIORITY );\r
 190         vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainBAUD_SET_IN_HARDWARE, mainCOM_TEST_LED );\r
 191         vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );\r
 192         vStartBlockingQueueTasks ( mainQUEUE_BLOCK_PRIORITY );  \r
 193         vStartDynamicPriorityTasks();   \r
 194         vStartGenericQueueTasks( mainGENERIC_QUEUE_PRIORITY );\r
 195         vStartQueuePeekTasks();\r
 196         vCreateBlockTimeTasks();\r
 197         vStartCountingSemaphoreTasks();\r
 198         vStartRecursiveMutexTasks();\r
 199 \r
 200         #if ( configUSE_FPU == 1 )\r
 201         {\r
 202                 /* A different project is provided that has configUSE_FPU set to 1\r
 203                 in order to demonstrate all the settings required to use the floating\r
 204                 point unit.  If you wish to use the floating point unit do not start\r
 205                 with this project. */\r
 206                 vStartMathTasks( mainFLOP_PRIORITY );\r
 207                 vStartFlopRegTests();\r
 208         }\r
 209         #endif\r
 210 \r
 211         /* Create the tasks defined within this file. */\r
 212         xTaskCreate( prvRegTestTask1, ( signed portCHAR * ) "Regtest1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
 213         xTaskCreate( prvRegTestTask2, ( signed portCHAR * ) "Regtest2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
 214         xTaskCreate( prvErrorChecks, ( signed portCHAR * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );\r
 215 \r
 216         /* The suicide tasks must be started last as they record the number of other\r
 217         tasks that exist within the system.  The value is then used to ensure at run\r
 218         time the number of tasks that exists is within expected bounds. */\r
 219         vCreateSuicidalTasks( mainDEATH_PRIORITY );\r
 220 \r
 221         /* Now start the scheduler.  Following this call the created tasks should\r
 222         be executing. */        \r
 223         vTaskStartScheduler();\r
 224 \r
 225         /* vTaskStartScheduler() will only return if an error occurs while the \r
 226         idle task is being created. */\r
 227         for( ;; );\r
 228 \r
 229         return 0;\r
 230 }\r
 231 /*-----------------------------------------------------------*/\r
 232 \r
 233 static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void )\r
 234 {\r
 235 portBASE_TYPE lReturn = pdPASS;\r
 236 static unsigned portLONG ulLastRegTest1Counter= 0UL, ulLastRegTest2Counter = 0UL;\r
 237 \r
 238         /* The demo tasks maintain a count that increments every cycle of the task\r
 239         provided that the task has never encountered an error.  This function \r
 240         checks the counts maintained by the tasks to ensure they are still being\r
 241         incremented.  A count remaining at the same value between calls therefore\r
 242         indicates that an error has been detected. */\r
 243 \r
 244         if( xAreIntegerMathsTaskStillRunning() != pdTRUE )\r
 245         {\r
 246                 lReturn = pdFAIL;\r
 247         }\r
 248 \r
 249         if( xAreComTestTasksStillRunning() != pdTRUE )\r
 250         {\r
 251                 lReturn = pdFAIL;\r
 252         }\r
 253         \r
 254         if( xAreSemaphoreTasksStillRunning() != pdTRUE )\r
 255         {\r
 256                 lReturn = pdFAIL;\r
 257         }\r
 258         \r
 259         if( xAreBlockingQueuesStillRunning() != pdTRUE )\r
 260         {\r
 261                 lReturn = pdFAIL;\r
 262         }\r
 263         \r
 264         if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )\r
 265         {\r
 266                 lReturn = pdFAIL;\r
 267         }\r
 268         \r
 269         if( xIsCreateTaskStillRunning() != pdTRUE )\r
 270         {\r
 271                 lReturn = pdFAIL;\r
 272         }\r
 273         \r
 274         if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )\r
 275         {\r
 276                 lReturn = pdFAIL;\r
 277         }\r
 278         \r
 279         if( xAreGenericQueueTasksStillRunning() != pdTRUE )\r
 280         {\r
 281                 lReturn = pdFAIL;\r
 282         }\r
 283         \r
 284         if( xAreQueuePeekTasksStillRunning() != pdTRUE )\r
 285         {\r
 286                 lReturn = pdFAIL;\r
 287         }\r
 288 \r
 289         if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )\r
 290         {\r
 291                 lReturn = pdFAIL;\r
 292         }\r
 293 \r
 294         if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )\r
 295         {\r
 296                 lReturn = pdFAIL;\r
 297         }\r
 298 \r
 299         #if ( configUSE_FPU == 1 )\r
 300                 if( xAreMathsTaskStillRunning() != pdTRUE )\r
 301                 {\r
 302                         lReturn = pdFAIL;\r
 303                 }\r
 304 \r
 305                 if( xAreFlopRegisterTestsStillRunning() != pdTRUE )\r
 306                 {\r
 307                         lReturn = pdFAIL;\r
 308                 }\r
 309         #endif\r
 310 \r
 311         /* Have the register test tasks found any errors? */\r
 312         if( xRegTestStatus != pdPASS )\r
 313         {\r
 314                 lReturn = pdFAIL;\r
 315         }\r
 316 \r
 317         /* Are the register test tasks still looping? */\r
 318         if( ulLastRegTest1Counter == ulRegTest1Counter )\r
 319         {\r
 320                 lReturn = pdFAIL;\r
 321         }\r
 322         else\r
 323         {\r
 324                 ulLastRegTest1Counter = ulRegTest1Counter;\r
 325         }\r
 326 \r
 327         if( ulLastRegTest2Counter == ulRegTest2Counter )\r
 328         {\r
 329                 lReturn = pdFAIL;\r
 330         }\r
 331         else\r
 332         {\r
 333                 ulLastRegTest2Counter = ulRegTest2Counter;\r
 334         }\r
 335 \r
 336         return lReturn;\r
 337 }\r
 338 /*-----------------------------------------------------------*/\r
 339 \r
 340 static void prvErrorChecks( void *pvParameters )\r
 341 {\r
 342 portTickType xDelayPeriod = mainNO_ERROR_CHECK_DELAY, xLastExecutionTime;\r
 343 volatile unsigned portBASE_TYPE uxFreeStack;\r
 344 \r
 345         /* Just to remove compiler warning. */\r
 346         ( void ) pvParameters;\r
 347 \r
 348         /* This call is just to demonstrate the use of the function - nothing is\r
 349         done with the value.  You would expect the stack high water mark to be\r
 350         lower (the function to return a larger value) here at function entry than\r
 351         later following calls to other functions. */\r
 352         uxFreeStack = uxTaskGetStackHighWaterMark( NULL );\r
 353 \r
 354         /* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()\r
 355         works correctly. */\r
 356         xLastExecutionTime = xTaskGetTickCount();\r
 357 \r
 358         /* Cycle for ever, delaying then checking all the other tasks are still\r
 359         operating without error. */\r
 360         for( ;; )\r
 361         {\r
 362                 /* Again just for demo purposes - uxFreeStack should have a lower value\r
 363                 here than following the call to uxTaskGetStackHighWaterMark() on the\r
 364                 task entry. */\r
 365                 uxFreeStack = uxTaskGetStackHighWaterMark( NULL );\r
 366 \r
 367                 /* Wait until it is time to check again.  The time we wait here depends\r
 368                 on whether an error has been detected or not.  When an error is \r
 369                 detected the time is shortened resulting in a faster LED flash rate. */\r
 370                 vTaskDelayUntil( &xLastExecutionTime, xDelayPeriod );\r
 371 \r
 372                 /* See if the other tasks are all ok. */\r
 373                 if( prvCheckOtherTasksAreStillRunning() != pdPASS )\r
 374                 {\r
 375                         /* An error occurred in one of the tasks so shorten the delay \r
 376                         period - which has the effect of increasing the frequency of the\r
 377                         LED toggle. */\r
 378                         xDelayPeriod = mainERROR_CHECK_DELAY;\r
 379                 }\r
 380 \r
 381                 /* Flash! */\r
 382                 vParTestToggleLED( mainCHECK_TEST_LED );\r
 383         }\r
 384 }\r
 385 /*-----------------------------------------------------------*/\r
 386 \r
 387 static void prvSetupHardware( void )\r
 388 {\r
 389         XCache_EnableICache( 0x80000000 );\r
 390         XCache_EnableDCache( 0x80000000 );\r
 391 \r
 392         /* Setup the IO port for use with the LED outputs. */\r
 393         vParTestInitialise();\r
 394 }\r
 395 /*-----------------------------------------------------------*/\r
 396 \r
 397 void prvRegTest1Pass( void )\r
 398 {\r
 399         /* Called from the inline assembler - this cannot be static\r
 400         otherwise it can get optimised away. */\r
 401         ulRegTest1Counter++;\r
 402 }\r
 403 /*-----------------------------------------------------------*/\r
 404 \r
 405 void prvRegTest2Pass( void )\r
 406 {\r
 407         /* Called from the inline assembler - this cannot be static\r
 408         otherwise it can get optimised away. */\r
 409         ulRegTest2Counter++;\r
 410 }\r
 411 /*-----------------------------------------------------------*/\r
 412 \r
 413 void prvRegTestFail( void )\r
 414 {\r
 415         /* Called from the inline assembler - this cannot be static\r
 416         otherwise it can get optimised away. */\r
 417         xRegTestStatus = pdFAIL;\r
 418 }\r
 419 /*-----------------------------------------------------------*/\r
 420 \r
 421 static void prvRegTestTask1( void *pvParameters )\r
 422 {\r
 423         /* Just to remove compiler warning. */\r
 424         ( void ) pvParameters;\r
 425 \r
 426         /* The first register test task as described at the top of this file.  The\r
 427         values used in the registers are different to those use in the second \r
 428         register test task.  Also, unlike the second register test task, this task\r
 429         yields between setting the register values and subsequently checking the\r
 430         register values. */\r
 431         asm volatile\r
 432         (\r
 433                 "RegTest1Start:                                 \n\t" \\r
 434                 "                                                               \n\t" \\r
 435                 "       li              0, 301                          \n\t" \\r
 436                 "       mtspr   256, 0  #USPRG0         \n\t" \\r
 437                 "       li              0, 501                          \n\t" \\r
 438                 "       mtspr   8, 0    #LR                     \n\t" \\r
 439                 "       li              0, 4                            \n\t" \\r
 440                 "       mtspr   1, 0    #XER            \n\t" \\r
 441                 "                                                               \n\t" \\r
 442                 "       li              0, 1                            \n\t" \\r
 443                 "       li              2, 2                            \n\t" \\r
 444                 "       li              3, 3                            \n\t" \\r
 445                 "       li              4,      4                               \n\t" \\r
 446                 "       li              5,      5                               \n\t" \\r
 447                 "       li              6,      6                               \n\t" \\r
 448                 "       li              7,      7                               \n\t" \\r
 449                 "       li              8,      8                               \n\t" \\r
 450                 "       li              9,      9                               \n\t" \\r
 451                 "       li              10,     10                              \n\t" \\r
 452                 "       li              11,     11                              \n\t" \\r
 453                 "       li              12,     12                              \n\t" \\r
 454                 "       li              13,     13                              \n\t" \\r
 455                 "       li              14,     14                              \n\t" \\r
 456                 "       li              15,     15                              \n\t" \\r
 457                 "       li              16,     16                              \n\t" \\r
 458                 "       li              17,     17                              \n\t" \\r
 459                 "       li              18,     18                              \n\t" \\r
 460                 "       li              19,     19                              \n\t" \\r
 461                 "       li              20,     20                              \n\t" \\r
 462                 "       li              21,     21                              \n\t" \\r
 463                 "       li              22,     22                              \n\t" \\r
 464                 "       li              23,     23                              \n\t" \\r
 465                 "       li              24,     24                              \n\t" \\r
 466                 "       li              25,     25                              \n\t" \\r
 467                 "       li              26,     26                              \n\t" \\r
 468                 "       li              27,     27                              \n\t" \\r
 469                 "       li              28,     28                              \n\t" \\r
 470                 "       li              29,     29                              \n\t" \\r
 471                 "       li              30,     30                              \n\t" \\r
 472                 "       li              31,     31                              \n\t" \\r
 473                 "                                                               \n\t" \\r
 474                 "       sc                                                      \n\t" \\r
 475                 "       nop                                                     \n\t" \\r
 476                 "                                                               \n\t" \\r
 477                 "       cmpwi   0, 1                            \n\t" \\r
 478                 "       bne     RegTest1Fail                    \n\t" \\r
 479                 "       cmpwi   2, 2                            \n\t" \\r
 480                 "       bne     RegTest1Fail                    \n\t" \\r
 481                 "       cmpwi   3, 3                            \n\t" \\r
 482                 "       bne     RegTest1Fail                    \n\t" \\r
 483                 "       cmpwi   4, 4                            \n\t" \\r
 484                 "       bne     RegTest1Fail                    \n\t" \\r
 485                 "       cmpwi   5, 5                            \n\t" \\r
 486                 "       bne     RegTest1Fail                    \n\t" \\r
 487                 "       cmpwi   6, 6                            \n\t" \\r
 488                 "       bne     RegTest1Fail                    \n\t" \\r
 489                 "       cmpwi   7, 7                            \n\t" \\r
 490                 "       bne     RegTest1Fail                    \n\t" \\r
 491                 "       cmpwi   8, 8                            \n\t" \\r
 492                 "       bne     RegTest1Fail                    \n\t" \\r
 493                 "       cmpwi   9, 9                            \n\t" \\r
 494                 "       bne     RegTest1Fail                    \n\t" \\r
 495                 "       cmpwi   10, 10                          \n\t" \\r
 496                 "       bne     RegTest1Fail                    \n\t" \\r
 497                 "       cmpwi   11, 11                          \n\t" \\r
 498                 "       bne     RegTest1Fail                    \n\t" \\r
 499                 "       cmpwi   12, 12                          \n\t" \\r
 500                 "       bne     RegTest1Fail                    \n\t" \\r
 501                 "       cmpwi   13, 13                          \n\t" \\r
 502                 "       bne     RegTest1Fail                    \n\t" \\r
 503                 "       cmpwi   14, 14                          \n\t" \\r
 504                 "       bne     RegTest1Fail                    \n\t" \\r
 505                 "       cmpwi   15, 15                          \n\t" \\r
 506                 "       bne     RegTest1Fail                    \n\t" \\r
 507                 "       cmpwi   16, 16                          \n\t" \\r
 508                 "       bne     RegTest1Fail                    \n\t" \\r
 509                 "       cmpwi   17, 17                          \n\t" \\r
 510                 "       bne     RegTest1Fail                    \n\t" \\r
 511                 "       cmpwi   18, 18                          \n\t" \\r
 512                 "       bne     RegTest1Fail                    \n\t" \\r
 513                 "       cmpwi   19, 19                          \n\t" \\r
 514                 "       bne     RegTest1Fail                    \n\t" \\r
 515                 "       cmpwi   20, 20                          \n\t" \\r
 516                 "       bne     RegTest1Fail                    \n\t" \\r
 517                 "       cmpwi   21, 21                          \n\t" \\r
 518                 "       bne     RegTest1Fail                    \n\t" \\r
 519                 "       cmpwi   22, 22                          \n\t" \\r
 520                 "       bne     RegTest1Fail                    \n\t" \\r
 521                 "       cmpwi   23, 23                          \n\t" \\r
 522                 "       bne     RegTest1Fail                    \n\t" \\r
 523                 "       cmpwi   24, 24                          \n\t" \\r
 524                 "       bne     RegTest1Fail                    \n\t" \\r
 525                 "       cmpwi   25, 25                          \n\t" \\r
 526                 "       bne     RegTest1Fail                    \n\t" \\r
 527                 "       cmpwi   26, 26                          \n\t" \\r
 528                 "       bne     RegTest1Fail                    \n\t" \\r
 529                 "       cmpwi   27, 27                          \n\t" \\r
 530                 "       bne     RegTest1Fail                    \n\t" \\r
 531                 "       cmpwi   28, 28                          \n\t" \\r
 532                 "       bne     RegTest1Fail                    \n\t" \\r
 533                 "       cmpwi   29, 29                          \n\t" \\r
 534                 "       bne     RegTest1Fail                    \n\t" \\r
 535                 "       cmpwi   30, 30                          \n\t" \\r
 536                 "       bne     RegTest1Fail                    \n\t" \\r
 537                 "       cmpwi   31, 31                          \n\t" \\r
 538                 "       bne     RegTest1Fail                    \n\t" \\r
 539                 "                                                               \n\t" \\r
 540                 "       mfspr   0, 256  #USPRG0         \n\t" \\r
 541                 "       cmpwi   0, 301                          \n\t" \\r
 542                 "       bne     RegTest1Fail                    \n\t" \\r
 543                 "       mfspr   0, 8    #LR                     \n\t" \\r
 544                 "       cmpwi   0, 501                          \n\t" \\r
 545                 "       bne     RegTest1Fail                    \n\t" \\r
 546                 "       mfspr   0, 1    #XER            \n\t" \\r
 547                 "       cmpwi   0, 4                            \n\t" \\r
 548                 "       bne     RegTest1Fail                    \n\t" \\r
 549                 "                                                               \n\t" \\r
 550                 "       bl prvRegTest1Pass                      \n\t" \\r
 551                 "       b RegTest1Start                         \n\t" \\r
 552                 "                                                               \n\t" \\r
 553                 "RegTest1Fail:                                  \n\t" \\r
 554                 "                                                               \n\t" \\r
 555                 "                                                               \n\t" \\r
 556                 "       bl prvRegTestFail                       \n\t" \\r
 557                 "       b RegTest1Start                         \n\t" \\r
 558         );\r
 559 }\r
 560 /*-----------------------------------------------------------*/\r
 561 \r
 562 static void prvRegTestTask2( void *pvParameters )\r
 563 {\r
 564         /* Just to remove compiler warning. */\r
 565         ( void ) pvParameters;\r
 566 \r
 567         /* The second register test task as described at the top of this file.  \r
 568         Note that this task fills the registers with different values to the\r
 569         first register test task. */\r
 570         asm volatile\r
 571         (\r
 572                 "RegTest2Start:                                 \n\t" \\r
 573                 "                                                               \n\t" \\r
 574                 "       li              0, 300                          \n\t" \\r
 575                 "       mtspr   256, 0  #USPRG0         \n\t" \\r
 576                 "       li              0, 500                          \n\t" \\r
 577                 "       mtspr   8, 0    #LR                     \n\t" \\r
 578                 "       li              0, 4                            \n\t" \\r
 579                 "       mtspr   1, 0    #XER            \n\t" \\r
 580                 "                                                               \n\t" \\r
 581                 "       li              0, 11                           \n\t" \\r
 582                 "       li              2, 12                           \n\t" \\r
 583                 "       li              3, 13                           \n\t" \\r
 584                 "       li              4,      14                              \n\t" \\r
 585                 "       li              5,      15                              \n\t" \\r
 586                 "       li              6,      16                              \n\t" \\r
 587                 "       li              7,      17                              \n\t" \\r
 588                 "       li              8,      18                              \n\t" \\r
 589                 "       li              9,      19                              \n\t" \\r
 590                 "       li              10,     110                             \n\t" \\r
 591                 "       li              11,     111                             \n\t" \\r
 592                 "       li              12,     112                             \n\t" \\r
 593                 "       li              13,     113                             \n\t" \\r
 594                 "       li              14,     114                             \n\t" \\r
 595                 "       li              15,     115                             \n\t" \\r
 596                 "       li              16,     116                             \n\t" \\r
 597                 "       li              17,     117                             \n\t" \\r
 598                 "       li              18,     118                             \n\t" \\r
 599                 "       li              19,     119                             \n\t" \\r
 600                 "       li              20,     120                             \n\t" \\r
 601                 "       li              21,     121                             \n\t" \\r
 602                 "       li              22,     122                             \n\t" \\r
 603                 "       li              23,     123                             \n\t" \\r
 604                 "       li              24,     124                             \n\t" \\r
 605                 "       li              25,     125                             \n\t" \\r
 606                 "       li              26,     126                             \n\t" \\r
 607                 "       li              27,     127                             \n\t" \\r
 608                 "       li              28,     128                             \n\t" \\r
 609                 "       li              29,     129                             \n\t" \\r
 610                 "       li              30,     130                             \n\t" \\r
 611                 "       li              31,     131                             \n\t" \\r
 612                 "                                                               \n\t" \\r
 613                 "       cmpwi   0, 11                           \n\t" \\r
 614                 "       bne     RegTest2Fail                    \n\t" \\r
 615                 "       cmpwi   2, 12                           \n\t" \\r
 616                 "       bne     RegTest2Fail                    \n\t" \\r
 617                 "       cmpwi   3, 13                           \n\t" \\r
 618                 "       bne     RegTest2Fail                    \n\t" \\r
 619                 "       cmpwi   4, 14                           \n\t" \\r
 620                 "       bne     RegTest2Fail                    \n\t" \\r
 621                 "       cmpwi   5, 15                           \n\t" \\r
 622                 "       bne     RegTest2Fail                    \n\t" \\r
 623                 "       cmpwi   6, 16                           \n\t" \\r
 624                 "       bne     RegTest2Fail                    \n\t" \\r
 625                 "       cmpwi   7, 17                           \n\t" \\r
 626                 "       bne     RegTest2Fail                    \n\t" \\r
 627                 "       cmpwi   8, 18                           \n\t" \\r
 628                 "       bne     RegTest2Fail                    \n\t" \\r
 629                 "       cmpwi   9, 19                           \n\t" \\r
 630                 "       bne     RegTest2Fail                    \n\t" \\r
 631                 "       cmpwi   10, 110                         \n\t" \\r
 632                 "       bne     RegTest2Fail                    \n\t" \\r
 633                 "       cmpwi   11, 111                         \n\t" \\r
 634                 "       bne     RegTest2Fail                    \n\t" \\r
 635                 "       cmpwi   12, 112                         \n\t" \\r
 636                 "       bne     RegTest2Fail                    \n\t" \\r
 637                 "       cmpwi   13, 113                         \n\t" \\r
 638                 "       bne     RegTest2Fail                    \n\t" \\r
 639                 "       cmpwi   14, 114                         \n\t" \\r
 640                 "       bne     RegTest2Fail                    \n\t" \\r
 641                 "       cmpwi   15, 115                         \n\t" \\r
 642                 "       bne     RegTest2Fail                    \n\t" \\r
 643                 "       cmpwi   16, 116                         \n\t" \\r
 644                 "       bne     RegTest2Fail                    \n\t" \\r
 645                 "       cmpwi   17, 117                         \n\t" \\r
 646                 "       bne     RegTest2Fail                    \n\t" \\r
 647                 "       cmpwi   18, 118                         \n\t" \\r
 648                 "       bne     RegTest2Fail                    \n\t" \\r
 649                 "       cmpwi   19, 119                         \n\t" \\r
 650                 "       bne     RegTest2Fail                    \n\t" \\r
 651                 "       cmpwi   20, 120                         \n\t" \\r
 652                 "       bne     RegTest2Fail                    \n\t" \\r
 653                 "       cmpwi   21, 121                         \n\t" \\r
 654                 "       bne     RegTest2Fail                    \n\t" \\r
 655                 "       cmpwi   22, 122                         \n\t" \\r
 656                 "       bne     RegTest2Fail                    \n\t" \\r
 657                 "       cmpwi   23, 123                         \n\t" \\r
 658                 "       bne     RegTest2Fail                    \n\t" \\r
 659                 "       cmpwi   24, 124                         \n\t" \\r
 660                 "       bne     RegTest2Fail                    \n\t" \\r
 661                 "       cmpwi   25, 125                         \n\t" \\r
 662                 "       bne     RegTest2Fail                    \n\t" \\r
 663                 "       cmpwi   26, 126                         \n\t" \\r
 664                 "       bne     RegTest2Fail                    \n\t" \\r
 665                 "       cmpwi   27, 127                         \n\t" \\r
 666                 "       bne     RegTest2Fail                    \n\t" \\r
 667                 "       cmpwi   28, 128                         \n\t" \\r
 668                 "       bne     RegTest2Fail                    \n\t" \\r
 669                 "       cmpwi   29, 129                         \n\t" \\r
 670                 "       bne     RegTest2Fail                    \n\t" \\r
 671                 "       cmpwi   30, 130                         \n\t" \\r
 672                 "       bne     RegTest2Fail                    \n\t" \\r
 673                 "       cmpwi   31, 131                         \n\t" \\r
 674                 "       bne     RegTest2Fail                    \n\t" \\r
 675                 "                                                               \n\t" \\r
 676                 "       mfspr   0, 256  #USPRG0         \n\t" \\r
 677                 "       cmpwi   0, 300                          \n\t" \\r
 678                 "       bne     RegTest2Fail                    \n\t" \\r
 679                 "       mfspr   0, 8    #LR                     \n\t" \\r
 680                 "       cmpwi   0, 500                          \n\t" \\r
 681                 "       bne     RegTest2Fail                    \n\t" \\r
 682                 "       mfspr   0, 1    #XER            \n\t" \\r
 683                 "       cmpwi   0, 4                            \n\t" \\r
 684                 "       bne     RegTest2Fail                    \n\t" \\r
 685                 "                                                               \n\t" \\r
 686                 "       bl prvRegTest2Pass                      \n\t" \\r
 687                 "       b RegTest2Start                         \n\t" \\r
 688                 "                                                               \n\t" \\r
 689                 "RegTest2Fail:                                  \n\t" \\r
 690                 "                                                               \n\t" \\r
 691                 "                                                               \n\t" \\r
 692                 "       bl prvRegTestFail                       \n\t" \\r
 693                 "       b RegTest2Start                         \n\t" \\r
 694         );\r
 695 }\r
 696 /*-----------------------------------------------------------*/\r
 697 \r
 698 /* This hook function will get called if there is a suspected stack overflow.\r
 699 An overflow can cause the task name to be corrupted, in which case the task\r
 700 handle needs to be used to determine the offending task. */\r
 701 void vApplicationStackOverflowHook( xTaskHandle xTask, signed portCHAR *pcTaskName );\r
 702 void vApplicationStackOverflowHook( xTaskHandle xTask, signed portCHAR *pcTaskName )\r
 703 {\r
 704 /* To prevent the optimiser removing the variables. */\r
 705 volatile xTaskHandle xTaskIn = xTask;\r
 706 volatile signed portCHAR *pcTaskNameIn = pcTaskName;\r
 707 \r
 708         /* Remove compiler warnings. */\r
 709         ( void ) xTaskIn;\r
 710         ( void ) pcTaskNameIn;\r
 711 \r
 712         /* The following three calls are simply to stop compiler warnings about the\r
 713         functions not being used - they are called from the inline assembly. */\r
 714         prvRegTest1Pass();\r
 715         prvRegTest2Pass();\r
 716         prvRegTestFail();\r
 717 \r
 718         for( ;; );\r
 719 }\r
 720 \r
 721 \r
 722 \r