git.sur5r.net Git - freertos/blob - FreeRTOS/Demo/PPC440_SP_FPU_Xilinx_Virtex5_GCC/RTOSDemo/main.c

   1 /*\r
   2     FreeRTOS V9.0.0rc2 - Copyright (C) 2016 Real Time Engineers Ltd.\r
   3     All rights reserved\r
   4 \r
   5     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   6 \r
   7     This file is part of the FreeRTOS distribution.\r
   8 \r
   9     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  10     the terms of the GNU General Public License (version 2) as published by the\r
  11     Free Software Foundation >>>> AND MODIFIED BY <<<< the FreeRTOS exception.\r
  12 \r
  13     ***************************************************************************\r
  14     >>!   NOTE: The modification to the GPL is included to allow you to     !<<\r
  15     >>!   distribute a combined work that includes FreeRTOS without being   !<<\r
  16     >>!   obliged to provide the source code for proprietary components     !<<\r
  17     >>!   outside of the FreeRTOS kernel.                                   !<<\r
  18     ***************************************************************************\r
  19 \r
  20     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  21     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  22     FOR A PARTICULAR PURPOSE.  Full license text is available on the following\r
  23     link: http://www.freertos.org/a00114.html\r
  24 \r
  25     ***************************************************************************\r
  26      *                                                                       *\r
  27      *    FreeRTOS provides completely free yet professionally developed,    *\r
  28      *    robust, strictly quality controlled, supported, and cross          *\r
  29      *    platform software that is more than just the market leader, it     *\r
  30      *    is the industry's de facto standard.                               *\r
  31      *                                                                       *\r
  32      *    Help yourself get started quickly while simultaneously helping     *\r
  33      *    to support the FreeRTOS project by purchasing a FreeRTOS           *\r
  34      *    tutorial book, reference manual, or both:                          *\r
  35      *    http://www.FreeRTOS.org/Documentation                              *\r
  36      *                                                                       *\r
  37     ***************************************************************************\r
  38 \r
  39     http://www.FreeRTOS.org/FAQHelp.html - Having a problem?  Start by reading\r
  40     the FAQ page "My application does not run, what could be wrong?".  Have you\r
  41     defined configASSERT()?\r
  42 \r
  43     http://www.FreeRTOS.org/support - In return for receiving this top quality\r
  44     embedded software for free we request you assist our global community by\r
  45     participating in the support forum.\r
  46 \r
  47     http://www.FreeRTOS.org/training - Investing in training allows your team to\r
  48     be as productive as possible as early as possible.  Now you can receive\r
  49     FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers\r
  50     Ltd, and the world's leading authority on the world's leading RTOS.\r
  51 \r
  52     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  53     including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
  54     compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
  55 \r
  56     http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.\r
  57     Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.\r
  58 \r
  59     http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High\r
  60     Integrity Systems ltd. to sell under the OpenRTOS brand.  Low cost OpenRTOS\r
  61     licenses offer ticketed support, indemnification and commercial middleware.\r
  62 \r
  63     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
  64     engineered and independently SIL3 certified version for use in safety and\r
  65     mission critical applications that require provable dependability.\r
  66 \r
  67     1 tab == 4 spaces!\r
  68 */\r
  69 \r
  70 /*\r
  71  * Creates all the demo application tasks, then starts the scheduler.  The WEB\r
  72  * documentation provides more details of the demo application tasks.\r
  73  * \r
  74  * In addition to the standard demo tasks, the follow demo specific tasks are\r
  75  * create:\r
  76  *\r
  77  * The "Check" task.  This only executes every three seconds but has the highest \r
  78  * priority so is guaranteed to get processor time.  Its main function is to \r
  79  * check that all the other tasks are still operational.  Most tasks maintain \r
  80  * a unique count that is incremented each time the task successfully completes \r
  81  * its function.  Should any error occur within such a task the count is \r
  82  * permanently halted.  The check task inspects the count of each task to ensure \r
  83  * it has changed since the last time the check task executed.  If all the count \r
  84  * variables have changed all the tasks are still executing error free, and the \r
  85  * check task toggles the onboard LED.  Should any task contain an error at any time \r
  86  * the LED toggle rate will change from 3 seconds to 500ms.\r
  87  *\r
  88  * The "Register Check" tasks.  These tasks fill the CPU registers with known\r
  89  * values, then check that each register still contains the expected value, the\r
  90  * discovery of an unexpected value being indicative of an error in the RTOS\r
  91  * context switch mechanism.  The register check tasks operate at low priority\r
  92  * so are switched in and out frequently.\r
  93  *\r
  94  */\r
  95 \r
  96 /* Scheduler includes. */\r
  97 #include "FreeRTOS.h"\r
  98 #include "task.h"\r
  99 \r
 100 /* Xilinx library includes. */\r
 101 #include "xcache_l.h"\r
 102 #include "xintc.h"\r
 103 \r
 104 /* Demo application includes. */\r
 105 #include "flash.h"\r
 106 #include "integer.h"\r
 107 #include "comtest2.h"\r
 108 #include "semtest.h"\r
 109 #include "BlockQ.h"\r
 110 #include "dynamic.h"\r
 111 #include "GenQTest.h"\r
 112 #include "QPeek.h"\r
 113 #include "blocktim.h"\r
 114 #include "death.h"\r
 115 #include "partest.h"\r
 116 #include "countsem.h"\r
 117 #include "recmutex.h"\r
 118 #include "flop.h"\r
 119 #include "flop-reg-test.h"\r
 120 \r
 121 /* Priorities assigned to the demo tasks. */\r
 122 #define mainCHECK_TASK_PRIORITY                 ( tskIDLE_PRIORITY + 4 )\r
 123 #define mainSEM_TEST_PRIORITY                   ( tskIDLE_PRIORITY + 2 )\r
 124 #define mainCOM_TEST_PRIORITY                   ( tskIDLE_PRIORITY + 1 )\r
 125 #define mainQUEUE_BLOCK_PRIORITY                ( tskIDLE_PRIORITY + 1 )\r
 126 #define mainDEATH_PRIORITY                              ( tskIDLE_PRIORITY + 1 )\r
 127 #define mainLED_TASK_PRIORITY                   ( tskIDLE_PRIORITY + 1 )\r
 128 #define mainGENERIC_QUEUE_PRIORITY              ( tskIDLE_PRIORITY )\r
 129 #define mainQUEUE_POLL_PRIORITY                 ( tskIDLE_PRIORITY + 1 )\r
 130 #define mainFLOP_PRIORITY                               ( tskIDLE_PRIORITY )\r
 131 \r
 132 /* The first LED used by the COM test and check tasks respectively. */\r
 133 #define mainCOM_TEST_LED                                ( 4 )\r
 134 #define mainCHECK_TEST_LED                              ( 3 )\r
 135 \r
 136 /* The baud rate used by the comtest tasks is set by the hardware, so the\r
 137 baud rate parameters passed into the comtest initialisation has no effect. */\r
 138 #define mainBAUD_SET_IN_HARDWARE                ( 0 )\r
 139 \r
 140 /* Delay periods used by the check task.  If no errors have been found then\r
 141 the check LED will toggle every mainNO_ERROR_CHECK_DELAY milliseconds.  If an\r
 142 error has been found at any time then the toggle rate will increase to \r
 143 mainERROR_CHECK_DELAY milliseconds. */\r
 144 #define mainNO_ERROR_CHECK_DELAY                ( ( TickType_t ) 3000 / portTICK_PERIOD_MS  )\r
 145 #define mainERROR_CHECK_DELAY                   ( ( TickType_t ) 500 / portTICK_PERIOD_MS  )\r
 146 \r
 147 \r
 148 /* \r
 149  * The tasks defined within this file - described within the comments at the\r
 150  * head of this page. \r
 151  */\r
 152 static void prvRegTestTask1( void *pvParameters );\r
 153 static void prvRegTestTask2( void *pvParameters );\r
 154 static void prvErrorChecks( void *pvParameters );\r
 155 \r
 156 /*\r
 157  * Called by the 'check' task to inspect all the standard demo tasks within\r
 158  * the system, as described within the comments at the head of this page.\r
 159  */\r
 160 static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void );\r
 161 \r
 162 /*\r
 163  * Perform any hardware initialisation required by the demo application.\r
 164  */\r
 165 static void prvSetupHardware( void );\r
 166 \r
 167 /*-----------------------------------------------------------*/\r
 168 \r
 169 /* xRegTestStatus will get set to pdFAIL by the regtest tasks if they\r
 170 discover an unexpected value. */\r
 171 static volatile unsigned portBASE_TYPE xRegTestStatus = pdPASS;\r
 172 \r
 173 /* Counters used to ensure the regtest tasks are still running. */\r
 174 static volatile unsigned long ulRegTest1Counter = 0UL, ulRegTest2Counter = 0UL;\r
 175 \r
 176 /*-----------------------------------------------------------*/\r
 177 \r
 178 int main( void )\r
 179 {\r
 180 \r
 181         /* Must be called prior to installing any interrupt handlers! */\r
 182         vPortSetupInterruptController();\r
 183 \r
 184         /* In this case prvSetupHardware() just enables the caches and and\r
 185         configures the IO ports for the LED outputs. */\r
 186         prvSetupHardware();\r
 187 \r
 188         /* Start the standard demo application tasks.  Note that the baud rate used\r
 189         by the comtest tasks is set by the hardware, so the baud rate parameter\r
 190         passed has no effect. */\r
 191         vStartLEDFlashTasks( mainLED_TASK_PRIORITY );   \r
 192         vStartIntegerMathTasks( tskIDLE_PRIORITY );\r
 193         vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainBAUD_SET_IN_HARDWARE, mainCOM_TEST_LED );\r
 194         vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );\r
 195         vStartBlockingQueueTasks ( mainQUEUE_BLOCK_PRIORITY );  \r
 196         vStartDynamicPriorityTasks();   \r
 197         vStartGenericQueueTasks( mainGENERIC_QUEUE_PRIORITY );\r
 198         vStartQueuePeekTasks();\r
 199         vCreateBlockTimeTasks();\r
 200         vStartCountingSemaphoreTasks();\r
 201         vStartRecursiveMutexTasks();\r
 202 \r
 203         #if ( configUSE_FPU == 1 )\r
 204                 vStartMathTasks( mainFLOP_PRIORITY );\r
 205                 vStartFlopRegTests();\r
 206         #endif\r
 207 \r
 208         /* Create the tasks defined within this file. */\r
 209         xTaskCreate( prvRegTestTask1, "Regtest1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
 210         xTaskCreate( prvRegTestTask2, "Regtest2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
 211         xTaskCreate( prvErrorChecks, "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );\r
 212 \r
 213         /* The suicide tasks must be started last as they record the number of other\r
 214         tasks that exist within the system.  The value is then used to ensure at run\r
 215         time the number of tasks that exists is within expected bounds. */\r
 216         vCreateSuicidalTasks( mainDEATH_PRIORITY );\r
 217 \r
 218         /* Now start the scheduler.  Following this call the created tasks should\r
 219         be executing. */        \r
 220         vTaskStartScheduler();\r
 221 \r
 222         /* vTaskStartScheduler() will only return if an error occurs while the \r
 223         idle task is being created. */\r
 224         for( ;; );\r
 225 \r
 226         return 0;\r
 227 }\r
 228 /*-----------------------------------------------------------*/\r
 229 \r
 230 static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void )\r
 231 {\r
 232 portBASE_TYPE lReturn = pdPASS;\r
 233 static unsigned long ulLastRegTest1Counter= 0UL, ulLastRegTest2Counter = 0UL;\r
 234 \r
 235         /* The demo tasks maintain a count that increments every cycle of the task\r
 236         provided that the task has never encountered an error.  This function \r
 237         checks the counts maintained by the tasks to ensure they are still being\r
 238         incremented.  A count remaining at the same value between calls therefore\r
 239         indicates that an error has been detected. */\r
 240 \r
 241         if( xAreIntegerMathsTaskStillRunning() != pdTRUE )\r
 242         {\r
 243                 lReturn = pdFAIL;\r
 244         }\r
 245 \r
 246         if( xAreComTestTasksStillRunning() != pdTRUE )\r
 247         {\r
 248                 lReturn = pdFAIL;\r
 249         }\r
 250         \r
 251         if( xAreSemaphoreTasksStillRunning() != pdTRUE )\r
 252         {\r
 253                 lReturn = pdFAIL;\r
 254         }\r
 255         \r
 256         if( xAreBlockingQueuesStillRunning() != pdTRUE )\r
 257         {\r
 258                 lReturn = pdFAIL;\r
 259         }\r
 260         \r
 261         if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )\r
 262         {\r
 263                 lReturn = pdFAIL;\r
 264         }\r
 265         \r
 266         if( xIsCreateTaskStillRunning() != pdTRUE )\r
 267         {\r
 268                 lReturn = pdFAIL;\r
 269         }\r
 270         \r
 271         if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )\r
 272         {\r
 273                 lReturn = pdFAIL;\r
 274         }\r
 275         \r
 276         if( xAreGenericQueueTasksStillRunning() != pdTRUE )\r
 277         {\r
 278                 lReturn = pdFAIL;\r
 279         }\r
 280         \r
 281         if( xAreQueuePeekTasksStillRunning() != pdTRUE )\r
 282         {\r
 283                 lReturn = pdFAIL;\r
 284         }\r
 285 \r
 286         if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )\r
 287         {\r
 288                 lReturn = pdFAIL;\r
 289         }\r
 290 \r
 291         if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )\r
 292         {\r
 293                 lReturn = pdFAIL;\r
 294         }\r
 295 \r
 296         #if ( configUSE_FPU == 1 )\r
 297                 if( xAreMathsTaskStillRunning() != pdTRUE )\r
 298                 {\r
 299                         lReturn = pdFAIL;\r
 300                 }\r
 301 \r
 302                 if( xAreFlopRegisterTestsStillRunning() != pdTRUE )\r
 303                 {\r
 304                         lReturn = pdFAIL;\r
 305                 }\r
 306         #endif\r
 307 \r
 308         /* Have the register test tasks found any errors? */\r
 309         if( xRegTestStatus != pdPASS )\r
 310         {\r
 311                 lReturn = pdFAIL;\r
 312         }\r
 313 \r
 314         /* Are the register test tasks still looping? */\r
 315         if( ulLastRegTest1Counter == ulRegTest1Counter )\r
 316         {\r
 317                 lReturn = pdFAIL;\r
 318         }\r
 319         else\r
 320         {\r
 321                 ulLastRegTest1Counter = ulRegTest1Counter;\r
 322         }\r
 323 \r
 324         if( ulLastRegTest2Counter == ulRegTest2Counter )\r
 325         {\r
 326                 lReturn = pdFAIL;\r
 327         }\r
 328         else\r
 329         {\r
 330                 ulLastRegTest2Counter = ulRegTest2Counter;\r
 331         }\r
 332 \r
 333         return lReturn;\r
 334 }\r
 335 /*-----------------------------------------------------------*/\r
 336 \r
 337 static void prvErrorChecks( void *pvParameters )\r
 338 {\r
 339 TickType_t xDelayPeriod = mainNO_ERROR_CHECK_DELAY, xLastExecutionTime;\r
 340 volatile unsigned portBASE_TYPE uxFreeStack;\r
 341 \r
 342         /* Just to remove compiler warning. */\r
 343         ( void ) pvParameters;\r
 344 \r
 345         /* This call is just to demonstrate the use of the function - nothing is\r
 346         done with the value.  You would expect the stack high water mark to be\r
 347         lower (the function to return a larger value) here at function entry than\r
 348         later following calls to other functions. */\r
 349         uxFreeStack = uxTaskGetStackHighWaterMark( NULL );\r
 350 \r
 351         /* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()\r
 352         works correctly. */\r
 353         xLastExecutionTime = xTaskGetTickCount();\r
 354 \r
 355         /* Cycle for ever, delaying then checking all the other tasks are still\r
 356         operating without error. */\r
 357         for( ;; )\r
 358         {\r
 359                 /* Again just for demo purposes - uxFreeStack should have a lower value\r
 360                 here than following the call to uxTaskGetStackHighWaterMark() on the\r
 361                 task entry. */\r
 362                 uxFreeStack = uxTaskGetStackHighWaterMark( NULL );\r
 363 \r
 364                 /* Wait until it is time to check again.  The time we wait here depends\r
 365                 on whether an error has been detected or not.  When an error is \r
 366                 detected the time is shortened resulting in a faster LED flash rate. */\r
 367                 vTaskDelayUntil( &xLastExecutionTime, xDelayPeriod );\r
 368 \r
 369                 /* See if the other tasks are all ok. */\r
 370                 if( prvCheckOtherTasksAreStillRunning() != pdPASS )\r
 371                 {\r
 372                         /* An error occurred in one of the tasks so shorten the delay \r
 373                         period - which has the effect of increasing the frequency of the\r
 374                         LED toggle. */\r
 375                         xDelayPeriod = mainERROR_CHECK_DELAY;\r
 376                 }\r
 377 \r
 378                 /* Flash! */\r
 379                 vParTestToggleLED( mainCHECK_TEST_LED );\r
 380         }\r
 381 }\r
 382 /*-----------------------------------------------------------*/\r
 383 \r
 384 static void prvSetupHardware( void )\r
 385 {\r
 386         XCache_EnableICache( 0x80000000 );\r
 387         XCache_EnableDCache( 0x80000000 );\r
 388 \r
 389         /* Setup the IO port for use with the LED outputs. */\r
 390         vParTestInitialise();\r
 391 }\r
 392 /*-----------------------------------------------------------*/\r
 393 \r
 394 void prvRegTest1Pass( void )\r
 395 {\r
 396         /* Called from the inline assembler - this cannot be static\r
 397         otherwise it can get optimised away. */\r
 398         ulRegTest1Counter++;\r
 399 }\r
 400 /*-----------------------------------------------------------*/\r
 401 \r
 402 void prvRegTest2Pass( void )\r
 403 {\r
 404         /* Called from the inline assembler - this cannot be static\r
 405         otherwise it can get optimised away. */\r
 406         ulRegTest2Counter++;\r
 407 }\r
 408 /*-----------------------------------------------------------*/\r
 409 \r
 410 void prvRegTestFail( void )\r
 411 {\r
 412         /* Called from the inline assembler - this cannot be static\r
 413         otherwise it can get optimised away. */\r
 414         xRegTestStatus = pdFAIL;\r
 415 }\r
 416 /*-----------------------------------------------------------*/\r
 417 \r
 418 static void prvRegTestTask1( void *pvParameters )\r
 419 {\r
 420         /* Just to remove compiler warning. */\r
 421         ( void ) pvParameters;\r
 422 \r
 423         /* The first register test task as described at the top of this file.  The\r
 424         values used in the registers are different to those use in the second \r
 425         register test task.  Also, unlike the second register test task, this task\r
 426         yields between setting the register values and subsequently checking the\r
 427         register values. */\r
 428         asm volatile\r
 429         (\r
 430                 "RegTest1Start:                                 \n\t" \\r
 431                 "                                                               \n\t" \\r
 432                 "       li              0, 301                          \n\t" \\r
 433                 "       mtspr   256, 0  #USPRG0         \n\t" \\r
 434                 "       li              0, 501                          \n\t" \\r
 435                 "       mtspr   8, 0    #LR                     \n\t" \\r
 436                 "       li              0, 4                            \n\t" \\r
 437                 "       mtspr   1, 0    #XER            \n\t" \\r
 438                 "                                                               \n\t" \\r
 439                 "       li              0, 1                            \n\t" \\r
 440                 "       li              2, 2                            \n\t" \\r
 441                 "       li              3, 3                            \n\t" \\r
 442                 "       li              4,      4                               \n\t" \\r
 443                 "       li              5,      5                               \n\t" \\r
 444                 "       li              6,      6                               \n\t" \\r
 445                 "       li              7,      7                               \n\t" \\r
 446                 "       li              8,      8                               \n\t" \\r
 447                 "       li              9,      9                               \n\t" \\r
 448                 "       li              10,     10                              \n\t" \\r
 449                 "       li              11,     11                              \n\t" \\r
 450                 "       li              12,     12                              \n\t" \\r
 451                 "       li              13,     13                              \n\t" \\r
 452                 "       li              14,     14                              \n\t" \\r
 453                 "       li              15,     15                              \n\t" \\r
 454                 "       li              16,     16                              \n\t" \\r
 455                 "       li              17,     17                              \n\t" \\r
 456                 "       li              18,     18                              \n\t" \\r
 457                 "       li              19,     19                              \n\t" \\r
 458                 "       li              20,     20                              \n\t" \\r
 459                 "       li              21,     21                              \n\t" \\r
 460                 "       li              22,     22                              \n\t" \\r
 461                 "       li              23,     23                              \n\t" \\r
 462                 "       li              24,     24                              \n\t" \\r
 463                 "       li              25,     25                              \n\t" \\r
 464                 "       li              26,     26                              \n\t" \\r
 465                 "       li              27,     27                              \n\t" \\r
 466                 "       li              28,     28                              \n\t" \\r
 467                 "       li              29,     29                              \n\t" \\r
 468                 "       li              30,     30                              \n\t" \\r
 469                 "       li              31,     31                              \n\t" \\r
 470                 "                                                               \n\t" \\r
 471                 "       sc                                                      \n\t" \\r
 472                 "       nop                                                     \n\t" \\r
 473                 "                                                               \n\t" \\r
 474                 "       cmpwi   0, 1                            \n\t" \\r
 475                 "       bne     RegTest1Fail                    \n\t" \\r
 476                 "       cmpwi   2, 2                            \n\t" \\r
 477                 "       bne     RegTest1Fail                    \n\t" \\r
 478                 "       cmpwi   3, 3                            \n\t" \\r
 479                 "       bne     RegTest1Fail                    \n\t" \\r
 480                 "       cmpwi   4, 4                            \n\t" \\r
 481                 "       bne     RegTest1Fail                    \n\t" \\r
 482                 "       cmpwi   5, 5                            \n\t" \\r
 483                 "       bne     RegTest1Fail                    \n\t" \\r
 484                 "       cmpwi   6, 6                            \n\t" \\r
 485                 "       bne     RegTest1Fail                    \n\t" \\r
 486                 "       cmpwi   7, 7                            \n\t" \\r
 487                 "       bne     RegTest1Fail                    \n\t" \\r
 488                 "       cmpwi   8, 8                            \n\t" \\r
 489                 "       bne     RegTest1Fail                    \n\t" \\r
 490                 "       cmpwi   9, 9                            \n\t" \\r
 491                 "       bne     RegTest1Fail                    \n\t" \\r
 492                 "       cmpwi   10, 10                          \n\t" \\r
 493                 "       bne     RegTest1Fail                    \n\t" \\r
 494                 "       cmpwi   11, 11                          \n\t" \\r
 495                 "       bne     RegTest1Fail                    \n\t" \\r
 496                 "       cmpwi   12, 12                          \n\t" \\r
 497                 "       bne     RegTest1Fail                    \n\t" \\r
 498                 "       cmpwi   13, 13                          \n\t" \\r
 499                 "       bne     RegTest1Fail                    \n\t" \\r
 500                 "       cmpwi   14, 14                          \n\t" \\r
 501                 "       bne     RegTest1Fail                    \n\t" \\r
 502                 "       cmpwi   15, 15                          \n\t" \\r
 503                 "       bne     RegTest1Fail                    \n\t" \\r
 504                 "       cmpwi   16, 16                          \n\t" \\r
 505                 "       bne     RegTest1Fail                    \n\t" \\r
 506                 "       cmpwi   17, 17                          \n\t" \\r
 507                 "       bne     RegTest1Fail                    \n\t" \\r
 508                 "       cmpwi   18, 18                          \n\t" \\r
 509                 "       bne     RegTest1Fail                    \n\t" \\r
 510                 "       cmpwi   19, 19                          \n\t" \\r
 511                 "       bne     RegTest1Fail                    \n\t" \\r
 512                 "       cmpwi   20, 20                          \n\t" \\r
 513                 "       bne     RegTest1Fail                    \n\t" \\r
 514                 "       cmpwi   21, 21                          \n\t" \\r
 515                 "       bne     RegTest1Fail                    \n\t" \\r
 516                 "       cmpwi   22, 22                          \n\t" \\r
 517                 "       bne     RegTest1Fail                    \n\t" \\r
 518                 "       cmpwi   23, 23                          \n\t" \\r
 519                 "       bne     RegTest1Fail                    \n\t" \\r
 520                 "       cmpwi   24, 24                          \n\t" \\r
 521                 "       bne     RegTest1Fail                    \n\t" \\r
 522                 "       cmpwi   25, 25                          \n\t" \\r
 523                 "       bne     RegTest1Fail                    \n\t" \\r
 524                 "       cmpwi   26, 26                          \n\t" \\r
 525                 "       bne     RegTest1Fail                    \n\t" \\r
 526                 "       cmpwi   27, 27                          \n\t" \\r
 527                 "       bne     RegTest1Fail                    \n\t" \\r
 528                 "       cmpwi   28, 28                          \n\t" \\r
 529                 "       bne     RegTest1Fail                    \n\t" \\r
 530                 "       cmpwi   29, 29                          \n\t" \\r
 531                 "       bne     RegTest1Fail                    \n\t" \\r
 532                 "       cmpwi   30, 30                          \n\t" \\r
 533                 "       bne     RegTest1Fail                    \n\t" \\r
 534                 "       cmpwi   31, 31                          \n\t" \\r
 535                 "       bne     RegTest1Fail                    \n\t" \\r
 536                 "                                                               \n\t" \\r
 537                 "       mfspr   0, 256  #USPRG0         \n\t" \\r
 538                 "       cmpwi   0, 301                          \n\t" \\r
 539                 "       bne     RegTest1Fail                    \n\t" \\r
 540                 "       mfspr   0, 8    #LR                     \n\t" \\r
 541                 "       cmpwi   0, 501                          \n\t" \\r
 542                 "       bne     RegTest1Fail                    \n\t" \\r
 543                 "       mfspr   0, 1    #XER            \n\t" \\r
 544                 "       cmpwi   0, 4                            \n\t" \\r
 545                 "       bne     RegTest1Fail                    \n\t" \\r
 546                 "                                                               \n\t" \\r
 547                 "       bl prvRegTest1Pass                      \n\t" \\r
 548                 "       b RegTest1Start                         \n\t" \\r
 549                 "                                                               \n\t" \\r
 550                 "RegTest1Fail:                                  \n\t" \\r
 551                 "                                                               \n\t" \\r
 552                 "                                                               \n\t" \\r
 553                 "       bl prvRegTestFail                       \n\t" \\r
 554                 "       b RegTest1Start                         \n\t" \\r
 555         );\r
 556 }\r
 557 /*-----------------------------------------------------------*/\r
 558 \r
 559 static void prvRegTestTask2( void *pvParameters )\r
 560 {\r
 561         /* Just to remove compiler warning. */\r
 562         ( void ) pvParameters;\r
 563 \r
 564         /* The second register test task as described at the top of this file.  \r
 565         Note that this task fills the registers with different values to the\r
 566         first register test task. */\r
 567         asm volatile\r
 568         (\r
 569                 "RegTest2Start:                                 \n\t" \\r
 570                 "                                                               \n\t" \\r
 571                 "       li              0, 300                          \n\t" \\r
 572                 "       mtspr   256, 0  #USPRG0         \n\t" \\r
 573                 "       li              0, 500                          \n\t" \\r
 574                 "       mtspr   8, 0    #LR                     \n\t" \\r
 575                 "       li              0, 4                            \n\t" \\r
 576                 "       mtspr   1, 0    #XER            \n\t" \\r
 577                 "                                                               \n\t" \\r
 578                 "       li              0, 11                           \n\t" \\r
 579                 "       li              2, 12                           \n\t" \\r
 580                 "       li              3, 13                           \n\t" \\r
 581                 "       li              4,      14                              \n\t" \\r
 582                 "       li              5,      15                              \n\t" \\r
 583                 "       li              6,      16                              \n\t" \\r
 584                 "       li              7,      17                              \n\t" \\r
 585                 "       li              8,      18                              \n\t" \\r
 586                 "       li              9,      19                              \n\t" \\r
 587                 "       li              10,     110                             \n\t" \\r
 588                 "       li              11,     111                             \n\t" \\r
 589                 "       li              12,     112                             \n\t" \\r
 590                 "       li              13,     113                             \n\t" \\r
 591                 "       li              14,     114                             \n\t" \\r
 592                 "       li              15,     115                             \n\t" \\r
 593                 "       li              16,     116                             \n\t" \\r
 594                 "       li              17,     117                             \n\t" \\r
 595                 "       li              18,     118                             \n\t" \\r
 596                 "       li              19,     119                             \n\t" \\r
 597                 "       li              20,     120                             \n\t" \\r
 598                 "       li              21,     121                             \n\t" \\r
 599                 "       li              22,     122                             \n\t" \\r
 600                 "       li              23,     123                             \n\t" \\r
 601                 "       li              24,     124                             \n\t" \\r
 602                 "       li              25,     125                             \n\t" \\r
 603                 "       li              26,     126                             \n\t" \\r
 604                 "       li              27,     127                             \n\t" \\r
 605                 "       li              28,     128                             \n\t" \\r
 606                 "       li              29,     129                             \n\t" \\r
 607                 "       li              30,     130                             \n\t" \\r
 608                 "       li              31,     131                             \n\t" \\r
 609                 "                                                               \n\t" \\r
 610                 "       cmpwi   0, 11                           \n\t" \\r
 611                 "       bne     RegTest2Fail                    \n\t" \\r
 612                 "       cmpwi   2, 12                           \n\t" \\r
 613                 "       bne     RegTest2Fail                    \n\t" \\r
 614                 "       cmpwi   3, 13                           \n\t" \\r
 615                 "       bne     RegTest2Fail                    \n\t" \\r
 616                 "       cmpwi   4, 14                           \n\t" \\r
 617                 "       bne     RegTest2Fail                    \n\t" \\r
 618                 "       cmpwi   5, 15                           \n\t" \\r
 619                 "       bne     RegTest2Fail                    \n\t" \\r
 620                 "       cmpwi   6, 16                           \n\t" \\r
 621                 "       bne     RegTest2Fail                    \n\t" \\r
 622                 "       cmpwi   7, 17                           \n\t" \\r
 623                 "       bne     RegTest2Fail                    \n\t" \\r
 624                 "       cmpwi   8, 18                           \n\t" \\r
 625                 "       bne     RegTest2Fail                    \n\t" \\r
 626                 "       cmpwi   9, 19                           \n\t" \\r
 627                 "       bne     RegTest2Fail                    \n\t" \\r
 628                 "       cmpwi   10, 110                         \n\t" \\r
 629                 "       bne     RegTest2Fail                    \n\t" \\r
 630                 "       cmpwi   11, 111                         \n\t" \\r
 631                 "       bne     RegTest2Fail                    \n\t" \\r
 632                 "       cmpwi   12, 112                         \n\t" \\r
 633                 "       bne     RegTest2Fail                    \n\t" \\r
 634                 "       cmpwi   13, 113                         \n\t" \\r
 635                 "       bne     RegTest2Fail                    \n\t" \\r
 636                 "       cmpwi   14, 114                         \n\t" \\r
 637                 "       bne     RegTest2Fail                    \n\t" \\r
 638                 "       cmpwi   15, 115                         \n\t" \\r
 639                 "       bne     RegTest2Fail                    \n\t" \\r
 640                 "       cmpwi   16, 116                         \n\t" \\r
 641                 "       bne     RegTest2Fail                    \n\t" \\r
 642                 "       cmpwi   17, 117                         \n\t" \\r
 643                 "       bne     RegTest2Fail                    \n\t" \\r
 644                 "       cmpwi   18, 118                         \n\t" \\r
 645                 "       bne     RegTest2Fail                    \n\t" \\r
 646                 "       cmpwi   19, 119                         \n\t" \\r
 647                 "       bne     RegTest2Fail                    \n\t" \\r
 648                 "       cmpwi   20, 120                         \n\t" \\r
 649                 "       bne     RegTest2Fail                    \n\t" \\r
 650                 "       cmpwi   21, 121                         \n\t" \\r
 651                 "       bne     RegTest2Fail                    \n\t" \\r
 652                 "       cmpwi   22, 122                         \n\t" \\r
 653                 "       bne     RegTest2Fail                    \n\t" \\r
 654                 "       cmpwi   23, 123                         \n\t" \\r
 655                 "       bne     RegTest2Fail                    \n\t" \\r
 656                 "       cmpwi   24, 124                         \n\t" \\r
 657                 "       bne     RegTest2Fail                    \n\t" \\r
 658                 "       cmpwi   25, 125                         \n\t" \\r
 659                 "       bne     RegTest2Fail                    \n\t" \\r
 660                 "       cmpwi   26, 126                         \n\t" \\r
 661                 "       bne     RegTest2Fail                    \n\t" \\r
 662                 "       cmpwi   27, 127                         \n\t" \\r
 663                 "       bne     RegTest2Fail                    \n\t" \\r
 664                 "       cmpwi   28, 128                         \n\t" \\r
 665                 "       bne     RegTest2Fail                    \n\t" \\r
 666                 "       cmpwi   29, 129                         \n\t" \\r
 667                 "       bne     RegTest2Fail                    \n\t" \\r
 668                 "       cmpwi   30, 130                         \n\t" \\r
 669                 "       bne     RegTest2Fail                    \n\t" \\r
 670                 "       cmpwi   31, 131                         \n\t" \\r
 671                 "       bne     RegTest2Fail                    \n\t" \\r
 672                 "                                                               \n\t" \\r
 673                 "       mfspr   0, 256  #USPRG0         \n\t" \\r
 674                 "       cmpwi   0, 300                          \n\t" \\r
 675                 "       bne     RegTest2Fail                    \n\t" \\r
 676                 "       mfspr   0, 8    #LR                     \n\t" \\r
 677                 "       cmpwi   0, 500                          \n\t" \\r
 678                 "       bne     RegTest2Fail                    \n\t" \\r
 679                 "       mfspr   0, 1    #XER            \n\t" \\r
 680                 "       cmpwi   0, 4                            \n\t" \\r
 681                 "       bne     RegTest2Fail                    \n\t" \\r
 682                 "                                                               \n\t" \\r
 683                 "       bl prvRegTest2Pass                      \n\t" \\r
 684                 "       b RegTest2Start                         \n\t" \\r
 685                 "                                                               \n\t" \\r
 686                 "RegTest2Fail:                                  \n\t" \\r
 687                 "                                                               \n\t" \\r
 688                 "                                                               \n\t" \\r
 689                 "       bl prvRegTestFail                       \n\t" \\r
 690                 "       b RegTest2Start                         \n\t" \\r
 691         );\r
 692 }\r
 693 /*-----------------------------------------------------------*/\r
 694 \r
 695 /* This hook function will get called if there is a suspected stack overflow.\r
 696 An overflow can cause the task name to be corrupted, in which case the task\r
 697 handle needs to be used to determine the offending task. */\r
 698 void vApplicationStackOverflowHook( TaskHandle_t xTask, signed char *pcTaskName );\r
 699 void vApplicationStackOverflowHook( TaskHandle_t xTask, signed char *pcTaskName )\r
 700 {\r
 701 /* To prevent the optimiser removing the variables. */\r
 702 volatile TaskHandle_t xTaskIn = xTask;\r
 703 volatile signed char *pcTaskNameIn = pcTaskName;\r
 704 \r
 705         /* Remove compiler warnings. */\r
 706         ( void ) xTaskIn;\r
 707         ( void ) pcTaskNameIn;\r
 708 \r
 709         /* The following three calls are simply to stop compiler warnings about the\r
 710         functions not being used - they are called from the inline assembly. */\r
 711         prvRegTest1Pass();\r
 712         prvRegTest2Pass();\r
 713         prvRegTestFail();\r
 714 \r
 715         for( ;; );\r
 716 }\r
 717 \r
 718 \r
 719 \r