git.sur5r.net Git - freertos/blob - FreeRTOS/Demo/PPC440_Xilinx_Virtex5_GCC/RTOSDemo/main.c

   1 /*\r
   2     FreeRTOS V7.5.2 - Copyright (C) 2013 Real Time Engineers Ltd.\r
   3 \r
   4     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   5 \r
   6     ***************************************************************************\r
   7      *                                                                       *\r
   8      *    FreeRTOS provides completely free yet professionally developed,    *\r
   9      *    robust, strictly quality controlled, supported, and cross          *\r
  10      *    platform software that has become a de facto standard.             *\r
  11      *                                                                       *\r
  12      *    Help yourself get started quickly and support the FreeRTOS         *\r
  13      *    project by purchasing a FreeRTOS tutorial book, reference          *\r
  14      *    manual, or both from: http://www.FreeRTOS.org/Documentation        *\r
  15      *                                                                       *\r
  16      *    Thank you!                                                         *\r
  17      *                                                                       *\r
  18     ***************************************************************************\r
  19 \r
  20     This file is part of the FreeRTOS distribution.\r
  21 \r
  22     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  23     the terms of the GNU General Public License (version 2) as published by the\r
  24     Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
  25 \r
  26     >>! NOTE: The modification to the GPL is included to allow you to distribute\r
  27     >>! a combined work that includes FreeRTOS without being obliged to provide\r
  28     >>! the source code for proprietary components outside of the FreeRTOS\r
  29     >>! kernel.\r
  30 \r
  31     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  32     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  33     FOR A PARTICULAR PURPOSE.  Full license text is available from the following\r
  34     link: http://www.freertos.org/a00114.html\r
  35 \r
  36     1 tab == 4 spaces!\r
  37 \r
  38     ***************************************************************************\r
  39      *                                                                       *\r
  40      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  41      *    not run, what could be wrong?"                                     *\r
  42      *                                                                       *\r
  43      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  44      *                                                                       *\r
  45     ***************************************************************************\r
  46 \r
  47     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
  48     license and Real Time Engineers Ltd. contact details.\r
  49 \r
  50     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  51     including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
  52     compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
  53 \r
  54     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
  55     Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS\r
  56     licenses offer ticketed support, indemnification and middleware.\r
  57 \r
  58     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
  59     engineered and independently SIL3 certified version for use in safety and\r
  60     mission critical applications that require provable dependability.\r
  61 \r
  62     1 tab == 4 spaces!\r
  63 */\r
  64 \r
  65 /*\r
  66  * Creates all the demo application tasks, then starts the scheduler.  The WEB\r
  67  * documentation provides more details of the demo application tasks.\r
  68  * \r
  69  * In addition to the standard demo tasks, the follow demo specific tasks are\r
  70  * create:\r
  71  *\r
  72  * The "Check" task.  This only executes every three seconds but has the highest \r
  73  * priority so is guaranteed to get processor time.  Its main function is to \r
  74  * check that all the other tasks are still operational.  Most tasks maintain \r
  75  * a unique count that is incremented each time the task successfully completes \r
  76  * its function.  Should any error occur within such a task the count is \r
  77  * permanently halted.  The check task inspects the count of each task to ensure \r
  78  * it has changed since the last time the check task executed.  If all the count \r
  79  * variables have changed all the tasks are still executing error free, and the \r
  80  * check task toggles the onboard LED.  Should any task contain an error at any time \r
  81  * the LED toggle rate will change from 3 seconds to 500ms.\r
  82  *\r
  83  * The "Register Check" tasks.  These tasks fill the CPU registers with known\r
  84  * values, then check that each register still contains the expected value, the\r
  85  * discovery of an unexpected value being indicative of an error in the RTOS\r
  86  * context switch mechanism.  The register check tasks operate at low priority\r
  87  * so are switched in and out frequently.\r
  88  *\r
  89  */\r
  90 \r
  91 /* Scheduler includes. */\r
  92 #include "FreeRTOS.h"\r
  93 #include "task.h"\r
  94 \r
  95 /* Xilinx library includes. */\r
  96 #include "xcache_l.h"\r
  97 #include "xintc.h"\r
  98 \r
  99 /* Demo application includes. */\r
 100 #include "flash.h"\r
 101 #include "integer.h"\r
 102 #include "comtest2.h"\r
 103 #include "semtest.h"\r
 104 #include "BlockQ.h"\r
 105 #include "dynamic.h"\r
 106 #include "GenQTest.h"\r
 107 #include "QPeek.h"\r
 108 #include "blocktim.h"\r
 109 #include "death.h"\r
 110 #include "partest.h"\r
 111 #include "countsem.h"\r
 112 #include "recmutex.h"\r
 113 #include "flop.h"\r
 114 #include "flop-reg-test.h"\r
 115 \r
 116 /* Priorities assigned to the demo tasks. */\r
 117 #define mainCHECK_TASK_PRIORITY                 ( tskIDLE_PRIORITY + 4 )\r
 118 #define mainSEM_TEST_PRIORITY                   ( tskIDLE_PRIORITY + 2 )\r
 119 #define mainCOM_TEST_PRIORITY                   ( tskIDLE_PRIORITY + 1 )\r
 120 #define mainQUEUE_BLOCK_PRIORITY                ( tskIDLE_PRIORITY + 1 )\r
 121 #define mainDEATH_PRIORITY                              ( tskIDLE_PRIORITY + 1 )\r
 122 #define mainLED_TASK_PRIORITY                   ( tskIDLE_PRIORITY + 1 )\r
 123 #define mainGENERIC_QUEUE_PRIORITY              ( tskIDLE_PRIORITY )\r
 124 #define mainQUEUE_POLL_PRIORITY                 ( tskIDLE_PRIORITY + 1 )\r
 125 #define mainFLOP_PRIORITY                               ( tskIDLE_PRIORITY )\r
 126 \r
 127 /* The first LED used by the COM test and check tasks respectively. */\r
 128 #define mainCOM_TEST_LED                                ( 4 )\r
 129 #define mainCHECK_TEST_LED                              ( 3 )\r
 130 \r
 131 /* The baud rate used by the comtest tasks is set by the hardware, so the\r
 132 baud rate parameters passed into the comtest initialisation has no effect. */\r
 133 #define mainBAUD_SET_IN_HARDWARE                ( 0 )\r
 134 \r
 135 /* Delay periods used by the check task.  If no errors have been found then\r
 136 the check LED will toggle every mainNO_ERROR_CHECK_DELAY milliseconds.  If an\r
 137 error has been found at any time then the toggle rate will increase to \r
 138 mainERROR_CHECK_DELAY milliseconds. */\r
 139 #define mainNO_ERROR_CHECK_DELAY                ( ( portTickType ) 3000 / portTICK_RATE_MS  )\r
 140 #define mainERROR_CHECK_DELAY                   ( ( portTickType ) 500 / portTICK_RATE_MS  )\r
 141 \r
 142 \r
 143 /* \r
 144  * The tasks defined within this file - described within the comments at the\r
 145  * head of this page. \r
 146  */\r
 147 static void prvRegTestTask1( void *pvParameters );\r
 148 static void prvRegTestTask2( void *pvParameters );\r
 149 static void prvErrorChecks( void *pvParameters );\r
 150 \r
 151 /*\r
 152  * Called by the 'check' task to inspect all the standard demo tasks within\r
 153  * the system, as described within the comments at the head of this page.\r
 154  */\r
 155 static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void );\r
 156 \r
 157 /*\r
 158  * Perform any hardware initialisation required by the demo application.\r
 159  */\r
 160 static void prvSetupHardware( void );\r
 161 \r
 162 /*-----------------------------------------------------------*/\r
 163 \r
 164 /* xRegTestStatus will get set to pdFAIL by the regtest tasks if they\r
 165 discover an unexpected value. */\r
 166 static volatile unsigned portBASE_TYPE xRegTestStatus = pdPASS;\r
 167 \r
 168 /* Counters used to ensure the regtest tasks are still running. */\r
 169 static volatile unsigned long ulRegTest1Counter = 0UL, ulRegTest2Counter = 0UL;\r
 170 \r
 171 /*-----------------------------------------------------------*/\r
 172 \r
 173 int main( void )\r
 174 {\r
 175 \r
 176         /* Must be called prior to installing any interrupt handlers! */\r
 177         vPortSetupInterruptController();\r
 178 \r
 179         /* In this case prvSetupHardware() just enables the caches and and\r
 180         configures the IO ports for the LED outputs. */\r
 181         prvSetupHardware();\r
 182 \r
 183         /* Start the standard demo application tasks.  Note that the baud rate used\r
 184         by the comtest tasks is set by the hardware, so the baud rate parameter\r
 185         passed has no effect. */\r
 186         vStartLEDFlashTasks( mainLED_TASK_PRIORITY );   \r
 187         vStartIntegerMathTasks( tskIDLE_PRIORITY );\r
 188         vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainBAUD_SET_IN_HARDWARE, mainCOM_TEST_LED );\r
 189         vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );\r
 190         vStartBlockingQueueTasks ( mainQUEUE_BLOCK_PRIORITY );  \r
 191         vStartDynamicPriorityTasks();   \r
 192         vStartGenericQueueTasks( mainGENERIC_QUEUE_PRIORITY );\r
 193         vStartQueuePeekTasks();\r
 194         vCreateBlockTimeTasks();\r
 195         vStartCountingSemaphoreTasks();\r
 196         vStartRecursiveMutexTasks();\r
 197 \r
 198         #if ( configUSE_FPU == 1 )\r
 199         {\r
 200                 /* A different project is provided that has configUSE_FPU set to 1\r
 201                 in order to demonstrate all the settings required to use the floating\r
 202                 point unit.  If you wish to use the floating point unit do not start\r
 203                 with this project. */\r
 204                 vStartMathTasks( mainFLOP_PRIORITY );\r
 205                 vStartFlopRegTests();\r
 206         }\r
 207         #endif\r
 208 \r
 209         /* Create the tasks defined within this file. */\r
 210         xTaskCreate( prvRegTestTask1, ( signed char * ) "Regtest1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
 211         xTaskCreate( prvRegTestTask2, ( signed char * ) "Regtest2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
 212         xTaskCreate( prvErrorChecks, ( signed char * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );\r
 213 \r
 214         /* The suicide tasks must be started last as they record the number of other\r
 215         tasks that exist within the system.  The value is then used to ensure at run\r
 216         time the number of tasks that exists is within expected bounds. */\r
 217         vCreateSuicidalTasks( mainDEATH_PRIORITY );\r
 218 \r
 219         /* Now start the scheduler.  Following this call the created tasks should\r
 220         be executing. */        \r
 221         vTaskStartScheduler();\r
 222 \r
 223         /* vTaskStartScheduler() will only return if an error occurs while the \r
 224         idle task is being created. */\r
 225         for( ;; );\r
 226 \r
 227         return 0;\r
 228 }\r
 229 /*-----------------------------------------------------------*/\r
 230 \r
 231 static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void )\r
 232 {\r
 233 portBASE_TYPE lReturn = pdPASS;\r
 234 static unsigned long ulLastRegTest1Counter= 0UL, ulLastRegTest2Counter = 0UL;\r
 235 \r
 236         /* The demo tasks maintain a count that increments every cycle of the task\r
 237         provided that the task has never encountered an error.  This function \r
 238         checks the counts maintained by the tasks to ensure they are still being\r
 239         incremented.  A count remaining at the same value between calls therefore\r
 240         indicates that an error has been detected. */\r
 241 \r
 242         if( xAreIntegerMathsTaskStillRunning() != pdTRUE )\r
 243         {\r
 244                 lReturn = pdFAIL;\r
 245         }\r
 246 \r
 247         if( xAreComTestTasksStillRunning() != pdTRUE )\r
 248         {\r
 249                 lReturn = pdFAIL;\r
 250         }\r
 251         \r
 252         if( xAreSemaphoreTasksStillRunning() != pdTRUE )\r
 253         {\r
 254                 lReturn = pdFAIL;\r
 255         }\r
 256         \r
 257         if( xAreBlockingQueuesStillRunning() != pdTRUE )\r
 258         {\r
 259                 lReturn = pdFAIL;\r
 260         }\r
 261         \r
 262         if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )\r
 263         {\r
 264                 lReturn = pdFAIL;\r
 265         }\r
 266         \r
 267         if( xIsCreateTaskStillRunning() != pdTRUE )\r
 268         {\r
 269                 lReturn = pdFAIL;\r
 270         }\r
 271         \r
 272         if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )\r
 273         {\r
 274                 lReturn = pdFAIL;\r
 275         }\r
 276         \r
 277         if( xAreGenericQueueTasksStillRunning() != pdTRUE )\r
 278         {\r
 279                 lReturn = pdFAIL;\r
 280         }\r
 281         \r
 282         if( xAreQueuePeekTasksStillRunning() != pdTRUE )\r
 283         {\r
 284                 lReturn = pdFAIL;\r
 285         }\r
 286 \r
 287         if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )\r
 288         {\r
 289                 lReturn = pdFAIL;\r
 290         }\r
 291 \r
 292         if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )\r
 293         {\r
 294                 lReturn = pdFAIL;\r
 295         }\r
 296 \r
 297         #if ( configUSE_FPU == 1 )\r
 298                 if( xAreMathsTaskStillRunning() != pdTRUE )\r
 299                 {\r
 300                         lReturn = pdFAIL;\r
 301                 }\r
 302 \r
 303                 if( xAreFlopRegisterTestsStillRunning() != pdTRUE )\r
 304                 {\r
 305                         lReturn = pdFAIL;\r
 306                 }\r
 307         #endif\r
 308 \r
 309         /* Have the register test tasks found any errors? */\r
 310         if( xRegTestStatus != pdPASS )\r
 311         {\r
 312                 lReturn = pdFAIL;\r
 313         }\r
 314 \r
 315         /* Are the register test tasks still looping? */\r
 316         if( ulLastRegTest1Counter == ulRegTest1Counter )\r
 317         {\r
 318                 lReturn = pdFAIL;\r
 319         }\r
 320         else\r
 321         {\r
 322                 ulLastRegTest1Counter = ulRegTest1Counter;\r
 323         }\r
 324 \r
 325         if( ulLastRegTest2Counter == ulRegTest2Counter )\r
 326         {\r
 327                 lReturn = pdFAIL;\r
 328         }\r
 329         else\r
 330         {\r
 331                 ulLastRegTest2Counter = ulRegTest2Counter;\r
 332         }\r
 333 \r
 334         return lReturn;\r
 335 }\r
 336 /*-----------------------------------------------------------*/\r
 337 \r
 338 static void prvErrorChecks( void *pvParameters )\r
 339 {\r
 340 portTickType xDelayPeriod = mainNO_ERROR_CHECK_DELAY, xLastExecutionTime;\r
 341 volatile unsigned portBASE_TYPE uxFreeStack;\r
 342 \r
 343         /* Just to remove compiler warning. */\r
 344         ( void ) pvParameters;\r
 345 \r
 346         /* This call is just to demonstrate the use of the function - nothing is\r
 347         done with the value.  You would expect the stack high water mark to be\r
 348         lower (the function to return a larger value) here at function entry than\r
 349         later following calls to other functions. */\r
 350         uxFreeStack = uxTaskGetStackHighWaterMark( NULL );\r
 351 \r
 352         /* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()\r
 353         works correctly. */\r
 354         xLastExecutionTime = xTaskGetTickCount();\r
 355 \r
 356         /* Cycle for ever, delaying then checking all the other tasks are still\r
 357         operating without error. */\r
 358         for( ;; )\r
 359         {\r
 360                 /* Again just for demo purposes - uxFreeStack should have a lower value\r
 361                 here than following the call to uxTaskGetStackHighWaterMark() on the\r
 362                 task entry. */\r
 363                 uxFreeStack = uxTaskGetStackHighWaterMark( NULL );\r
 364 \r
 365                 /* Wait until it is time to check again.  The time we wait here depends\r
 366                 on whether an error has been detected or not.  When an error is \r
 367                 detected the time is shortened resulting in a faster LED flash rate. */\r
 368                 vTaskDelayUntil( &xLastExecutionTime, xDelayPeriod );\r
 369 \r
 370                 /* See if the other tasks are all ok. */\r
 371                 if( prvCheckOtherTasksAreStillRunning() != pdPASS )\r
 372                 {\r
 373                         /* An error occurred in one of the tasks so shorten the delay \r
 374                         period - which has the effect of increasing the frequency of the\r
 375                         LED toggle. */\r
 376                         xDelayPeriod = mainERROR_CHECK_DELAY;\r
 377                 }\r
 378 \r
 379                 /* Flash! */\r
 380                 vParTestToggleLED( mainCHECK_TEST_LED );\r
 381         }\r
 382 }\r
 383 /*-----------------------------------------------------------*/\r
 384 \r
 385 static void prvSetupHardware( void )\r
 386 {\r
 387         XCache_EnableICache( 0x80000000 );\r
 388         XCache_EnableDCache( 0x80000000 );\r
 389 \r
 390         /* Setup the IO port for use with the LED outputs. */\r
 391         vParTestInitialise();\r
 392 }\r
 393 /*-----------------------------------------------------------*/\r
 394 \r
 395 void prvRegTest1Pass( void )\r
 396 {\r
 397         /* Called from the inline assembler - this cannot be static\r
 398         otherwise it can get optimised away. */\r
 399         ulRegTest1Counter++;\r
 400 }\r
 401 /*-----------------------------------------------------------*/\r
 402 \r
 403 void prvRegTest2Pass( void )\r
 404 {\r
 405         /* Called from the inline assembler - this cannot be static\r
 406         otherwise it can get optimised away. */\r
 407         ulRegTest2Counter++;\r
 408 }\r
 409 /*-----------------------------------------------------------*/\r
 410 \r
 411 void prvRegTestFail( void )\r
 412 {\r
 413         /* Called from the inline assembler - this cannot be static\r
 414         otherwise it can get optimised away. */\r
 415         xRegTestStatus = pdFAIL;\r
 416 }\r
 417 /*-----------------------------------------------------------*/\r
 418 \r
 419 static void prvRegTestTask1( void *pvParameters )\r
 420 {\r
 421         /* Just to remove compiler warning. */\r
 422         ( void ) pvParameters;\r
 423 \r
 424         /* The first register test task as described at the top of this file.  The\r
 425         values used in the registers are different to those use in the second \r
 426         register test task.  Also, unlike the second register test task, this task\r
 427         yields between setting the register values and subsequently checking the\r
 428         register values. */\r
 429         asm volatile\r
 430         (\r
 431                 "RegTest1Start:                                 \n\t" \\r
 432                 "                                                               \n\t" \\r
 433                 "       li              0, 301                          \n\t" \\r
 434                 "       mtspr   256, 0  #USPRG0         \n\t" \\r
 435                 "       li              0, 501                          \n\t" \\r
 436                 "       mtspr   8, 0    #LR                     \n\t" \\r
 437                 "       li              0, 4                            \n\t" \\r
 438                 "       mtspr   1, 0    #XER            \n\t" \\r
 439                 "                                                               \n\t" \\r
 440                 "       li              0, 1                            \n\t" \\r
 441                 "       li              2, 2                            \n\t" \\r
 442                 "       li              3, 3                            \n\t" \\r
 443                 "       li              4,      4                               \n\t" \\r
 444                 "       li              5,      5                               \n\t" \\r
 445                 "       li              6,      6                               \n\t" \\r
 446                 "       li              7,      7                               \n\t" \\r
 447                 "       li              8,      8                               \n\t" \\r
 448                 "       li              9,      9                               \n\t" \\r
 449                 "       li              10,     10                              \n\t" \\r
 450                 "       li              11,     11                              \n\t" \\r
 451                 "       li              12,     12                              \n\t" \\r
 452                 "       li              13,     13                              \n\t" \\r
 453                 "       li              14,     14                              \n\t" \\r
 454                 "       li              15,     15                              \n\t" \\r
 455                 "       li              16,     16                              \n\t" \\r
 456                 "       li              17,     17                              \n\t" \\r
 457                 "       li              18,     18                              \n\t" \\r
 458                 "       li              19,     19                              \n\t" \\r
 459                 "       li              20,     20                              \n\t" \\r
 460                 "       li              21,     21                              \n\t" \\r
 461                 "       li              22,     22                              \n\t" \\r
 462                 "       li              23,     23                              \n\t" \\r
 463                 "       li              24,     24                              \n\t" \\r
 464                 "       li              25,     25                              \n\t" \\r
 465                 "       li              26,     26                              \n\t" \\r
 466                 "       li              27,     27                              \n\t" \\r
 467                 "       li              28,     28                              \n\t" \\r
 468                 "       li              29,     29                              \n\t" \\r
 469                 "       li              30,     30                              \n\t" \\r
 470                 "       li              31,     31                              \n\t" \\r
 471                 "                                                               \n\t" \\r
 472                 "       sc                                                      \n\t" \\r
 473                 "       nop                                                     \n\t" \\r
 474                 "                                                               \n\t" \\r
 475                 "       cmpwi   0, 1                            \n\t" \\r
 476                 "       bne     RegTest1Fail                    \n\t" \\r
 477                 "       cmpwi   2, 2                            \n\t" \\r
 478                 "       bne     RegTest1Fail                    \n\t" \\r
 479                 "       cmpwi   3, 3                            \n\t" \\r
 480                 "       bne     RegTest1Fail                    \n\t" \\r
 481                 "       cmpwi   4, 4                            \n\t" \\r
 482                 "       bne     RegTest1Fail                    \n\t" \\r
 483                 "       cmpwi   5, 5                            \n\t" \\r
 484                 "       bne     RegTest1Fail                    \n\t" \\r
 485                 "       cmpwi   6, 6                            \n\t" \\r
 486                 "       bne     RegTest1Fail                    \n\t" \\r
 487                 "       cmpwi   7, 7                            \n\t" \\r
 488                 "       bne     RegTest1Fail                    \n\t" \\r
 489                 "       cmpwi   8, 8                            \n\t" \\r
 490                 "       bne     RegTest1Fail                    \n\t" \\r
 491                 "       cmpwi   9, 9                            \n\t" \\r
 492                 "       bne     RegTest1Fail                    \n\t" \\r
 493                 "       cmpwi   10, 10                          \n\t" \\r
 494                 "       bne     RegTest1Fail                    \n\t" \\r
 495                 "       cmpwi   11, 11                          \n\t" \\r
 496                 "       bne     RegTest1Fail                    \n\t" \\r
 497                 "       cmpwi   12, 12                          \n\t" \\r
 498                 "       bne     RegTest1Fail                    \n\t" \\r
 499                 "       cmpwi   13, 13                          \n\t" \\r
 500                 "       bne     RegTest1Fail                    \n\t" \\r
 501                 "       cmpwi   14, 14                          \n\t" \\r
 502                 "       bne     RegTest1Fail                    \n\t" \\r
 503                 "       cmpwi   15, 15                          \n\t" \\r
 504                 "       bne     RegTest1Fail                    \n\t" \\r
 505                 "       cmpwi   16, 16                          \n\t" \\r
 506                 "       bne     RegTest1Fail                    \n\t" \\r
 507                 "       cmpwi   17, 17                          \n\t" \\r
 508                 "       bne     RegTest1Fail                    \n\t" \\r
 509                 "       cmpwi   18, 18                          \n\t" \\r
 510                 "       bne     RegTest1Fail                    \n\t" \\r
 511                 "       cmpwi   19, 19                          \n\t" \\r
 512                 "       bne     RegTest1Fail                    \n\t" \\r
 513                 "       cmpwi   20, 20                          \n\t" \\r
 514                 "       bne     RegTest1Fail                    \n\t" \\r
 515                 "       cmpwi   21, 21                          \n\t" \\r
 516                 "       bne     RegTest1Fail                    \n\t" \\r
 517                 "       cmpwi   22, 22                          \n\t" \\r
 518                 "       bne     RegTest1Fail                    \n\t" \\r
 519                 "       cmpwi   23, 23                          \n\t" \\r
 520                 "       bne     RegTest1Fail                    \n\t" \\r
 521                 "       cmpwi   24, 24                          \n\t" \\r
 522                 "       bne     RegTest1Fail                    \n\t" \\r
 523                 "       cmpwi   25, 25                          \n\t" \\r
 524                 "       bne     RegTest1Fail                    \n\t" \\r
 525                 "       cmpwi   26, 26                          \n\t" \\r
 526                 "       bne     RegTest1Fail                    \n\t" \\r
 527                 "       cmpwi   27, 27                          \n\t" \\r
 528                 "       bne     RegTest1Fail                    \n\t" \\r
 529                 "       cmpwi   28, 28                          \n\t" \\r
 530                 "       bne     RegTest1Fail                    \n\t" \\r
 531                 "       cmpwi   29, 29                          \n\t" \\r
 532                 "       bne     RegTest1Fail                    \n\t" \\r
 533                 "       cmpwi   30, 30                          \n\t" \\r
 534                 "       bne     RegTest1Fail                    \n\t" \\r
 535                 "       cmpwi   31, 31                          \n\t" \\r
 536                 "       bne     RegTest1Fail                    \n\t" \\r
 537                 "                                                               \n\t" \\r
 538                 "       mfspr   0, 256  #USPRG0         \n\t" \\r
 539                 "       cmpwi   0, 301                          \n\t" \\r
 540                 "       bne     RegTest1Fail                    \n\t" \\r
 541                 "       mfspr   0, 8    #LR                     \n\t" \\r
 542                 "       cmpwi   0, 501                          \n\t" \\r
 543                 "       bne     RegTest1Fail                    \n\t" \\r
 544                 "       mfspr   0, 1    #XER            \n\t" \\r
 545                 "       cmpwi   0, 4                            \n\t" \\r
 546                 "       bne     RegTest1Fail                    \n\t" \\r
 547                 "                                                               \n\t" \\r
 548                 "       bl prvRegTest1Pass                      \n\t" \\r
 549                 "       b RegTest1Start                         \n\t" \\r
 550                 "                                                               \n\t" \\r
 551                 "RegTest1Fail:                                  \n\t" \\r
 552                 "                                                               \n\t" \\r
 553                 "                                                               \n\t" \\r
 554                 "       bl prvRegTestFail                       \n\t" \\r
 555                 "       b RegTest1Start                         \n\t" \\r
 556         );\r
 557 }\r
 558 /*-----------------------------------------------------------*/\r
 559 \r
 560 static void prvRegTestTask2( void *pvParameters )\r
 561 {\r
 562         /* Just to remove compiler warning. */\r
 563         ( void ) pvParameters;\r
 564 \r
 565         /* The second register test task as described at the top of this file.  \r
 566         Note that this task fills the registers with different values to the\r
 567         first register test task. */\r
 568         asm volatile\r
 569         (\r
 570                 "RegTest2Start:                                 \n\t" \\r
 571                 "                                                               \n\t" \\r
 572                 "       li              0, 300                          \n\t" \\r
 573                 "       mtspr   256, 0  #USPRG0         \n\t" \\r
 574                 "       li              0, 500                          \n\t" \\r
 575                 "       mtspr   8, 0    #LR                     \n\t" \\r
 576                 "       li              0, 4                            \n\t" \\r
 577                 "       mtspr   1, 0    #XER            \n\t" \\r
 578                 "                                                               \n\t" \\r
 579                 "       li              0, 11                           \n\t" \\r
 580                 "       li              2, 12                           \n\t" \\r
 581                 "       li              3, 13                           \n\t" \\r
 582                 "       li              4,      14                              \n\t" \\r
 583                 "       li              5,      15                              \n\t" \\r
 584                 "       li              6,      16                              \n\t" \\r
 585                 "       li              7,      17                              \n\t" \\r
 586                 "       li              8,      18                              \n\t" \\r
 587                 "       li              9,      19                              \n\t" \\r
 588                 "       li              10,     110                             \n\t" \\r
 589                 "       li              11,     111                             \n\t" \\r
 590                 "       li              12,     112                             \n\t" \\r
 591                 "       li              13,     113                             \n\t" \\r
 592                 "       li              14,     114                             \n\t" \\r
 593                 "       li              15,     115                             \n\t" \\r
 594                 "       li              16,     116                             \n\t" \\r
 595                 "       li              17,     117                             \n\t" \\r
 596                 "       li              18,     118                             \n\t" \\r
 597                 "       li              19,     119                             \n\t" \\r
 598                 "       li              20,     120                             \n\t" \\r
 599                 "       li              21,     121                             \n\t" \\r
 600                 "       li              22,     122                             \n\t" \\r
 601                 "       li              23,     123                             \n\t" \\r
 602                 "       li              24,     124                             \n\t" \\r
 603                 "       li              25,     125                             \n\t" \\r
 604                 "       li              26,     126                             \n\t" \\r
 605                 "       li              27,     127                             \n\t" \\r
 606                 "       li              28,     128                             \n\t" \\r
 607                 "       li              29,     129                             \n\t" \\r
 608                 "       li              30,     130                             \n\t" \\r
 609                 "       li              31,     131                             \n\t" \\r
 610                 "                                                               \n\t" \\r
 611                 "       cmpwi   0, 11                           \n\t" \\r
 612                 "       bne     RegTest2Fail                    \n\t" \\r
 613                 "       cmpwi   2, 12                           \n\t" \\r
 614                 "       bne     RegTest2Fail                    \n\t" \\r
 615                 "       cmpwi   3, 13                           \n\t" \\r
 616                 "       bne     RegTest2Fail                    \n\t" \\r
 617                 "       cmpwi   4, 14                           \n\t" \\r
 618                 "       bne     RegTest2Fail                    \n\t" \\r
 619                 "       cmpwi   5, 15                           \n\t" \\r
 620                 "       bne     RegTest2Fail                    \n\t" \\r
 621                 "       cmpwi   6, 16                           \n\t" \\r
 622                 "       bne     RegTest2Fail                    \n\t" \\r
 623                 "       cmpwi   7, 17                           \n\t" \\r
 624                 "       bne     RegTest2Fail                    \n\t" \\r
 625                 "       cmpwi   8, 18                           \n\t" \\r
 626                 "       bne     RegTest2Fail                    \n\t" \\r
 627                 "       cmpwi   9, 19                           \n\t" \\r
 628                 "       bne     RegTest2Fail                    \n\t" \\r
 629                 "       cmpwi   10, 110                         \n\t" \\r
 630                 "       bne     RegTest2Fail                    \n\t" \\r
 631                 "       cmpwi   11, 111                         \n\t" \\r
 632                 "       bne     RegTest2Fail                    \n\t" \\r
 633                 "       cmpwi   12, 112                         \n\t" \\r
 634                 "       bne     RegTest2Fail                    \n\t" \\r
 635                 "       cmpwi   13, 113                         \n\t" \\r
 636                 "       bne     RegTest2Fail                    \n\t" \\r
 637                 "       cmpwi   14, 114                         \n\t" \\r
 638                 "       bne     RegTest2Fail                    \n\t" \\r
 639                 "       cmpwi   15, 115                         \n\t" \\r
 640                 "       bne     RegTest2Fail                    \n\t" \\r
 641                 "       cmpwi   16, 116                         \n\t" \\r
 642                 "       bne     RegTest2Fail                    \n\t" \\r
 643                 "       cmpwi   17, 117                         \n\t" \\r
 644                 "       bne     RegTest2Fail                    \n\t" \\r
 645                 "       cmpwi   18, 118                         \n\t" \\r
 646                 "       bne     RegTest2Fail                    \n\t" \\r
 647                 "       cmpwi   19, 119                         \n\t" \\r
 648                 "       bne     RegTest2Fail                    \n\t" \\r
 649                 "       cmpwi   20, 120                         \n\t" \\r
 650                 "       bne     RegTest2Fail                    \n\t" \\r
 651                 "       cmpwi   21, 121                         \n\t" \\r
 652                 "       bne     RegTest2Fail                    \n\t" \\r
 653                 "       cmpwi   22, 122                         \n\t" \\r
 654                 "       bne     RegTest2Fail                    \n\t" \\r
 655                 "       cmpwi   23, 123                         \n\t" \\r
 656                 "       bne     RegTest2Fail                    \n\t" \\r
 657                 "       cmpwi   24, 124                         \n\t" \\r
 658                 "       bne     RegTest2Fail                    \n\t" \\r
 659                 "       cmpwi   25, 125                         \n\t" \\r
 660                 "       bne     RegTest2Fail                    \n\t" \\r
 661                 "       cmpwi   26, 126                         \n\t" \\r
 662                 "       bne     RegTest2Fail                    \n\t" \\r
 663                 "       cmpwi   27, 127                         \n\t" \\r
 664                 "       bne     RegTest2Fail                    \n\t" \\r
 665                 "       cmpwi   28, 128                         \n\t" \\r
 666                 "       bne     RegTest2Fail                    \n\t" \\r
 667                 "       cmpwi   29, 129                         \n\t" \\r
 668                 "       bne     RegTest2Fail                    \n\t" \\r
 669                 "       cmpwi   30, 130                         \n\t" \\r
 670                 "       bne     RegTest2Fail                    \n\t" \\r
 671                 "       cmpwi   31, 131                         \n\t" \\r
 672                 "       bne     RegTest2Fail                    \n\t" \\r
 673                 "                                                               \n\t" \\r
 674                 "       mfspr   0, 256  #USPRG0         \n\t" \\r
 675                 "       cmpwi   0, 300                          \n\t" \\r
 676                 "       bne     RegTest2Fail                    \n\t" \\r
 677                 "       mfspr   0, 8    #LR                     \n\t" \\r
 678                 "       cmpwi   0, 500                          \n\t" \\r
 679                 "       bne     RegTest2Fail                    \n\t" \\r
 680                 "       mfspr   0, 1    #XER            \n\t" \\r
 681                 "       cmpwi   0, 4                            \n\t" \\r
 682                 "       bne     RegTest2Fail                    \n\t" \\r
 683                 "                                                               \n\t" \\r
 684                 "       bl prvRegTest2Pass                      \n\t" \\r
 685                 "       b RegTest2Start                         \n\t" \\r
 686                 "                                                               \n\t" \\r
 687                 "RegTest2Fail:                                  \n\t" \\r
 688                 "                                                               \n\t" \\r
 689                 "                                                               \n\t" \\r
 690                 "       bl prvRegTestFail                       \n\t" \\r
 691                 "       b RegTest2Start                         \n\t" \\r
 692         );\r
 693 }\r
 694 /*-----------------------------------------------------------*/\r
 695 \r
 696 /* This hook function will get called if there is a suspected stack overflow.\r
 697 An overflow can cause the task name to be corrupted, in which case the task\r
 698 handle needs to be used to determine the offending task. */\r
 699 void vApplicationStackOverflowHook( xTaskHandle xTask, signed char *pcTaskName );\r
 700 void vApplicationStackOverflowHook( xTaskHandle xTask, signed char *pcTaskName )\r
 701 {\r
 702 /* To prevent the optimiser removing the variables. */\r
 703 volatile xTaskHandle xTaskIn = xTask;\r
 704 volatile signed char *pcTaskNameIn = pcTaskName;\r
 705 \r
 706         /* Remove compiler warnings. */\r
 707         ( void ) xTaskIn;\r
 708         ( void ) pcTaskNameIn;\r
 709 \r
 710         /* The following three calls are simply to stop compiler warnings about the\r
 711         functions not being used - they are called from the inline assembly. */\r
 712         prvRegTest1Pass();\r
 713         prvRegTest2Pass();\r
 714         prvRegTestFail();\r
 715 \r
 716         for( ;; );\r
 717 }\r
 718 \r
 719 \r
 720 \r