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

   1 /*\r
   2         FreeRTOS V5.4.2 - Copyright (C) 2009 Real Time Engineers Ltd.\r
   3 \r
   4         This file is part of the FreeRTOS distribution.\r
   5 \r
   6         FreeRTOS is free software; you can redistribute it and/or modify it     under \r
   7         the terms of the GNU General Public License (version 2) as published by the \r
   8         Free Software Foundation and modified by the FreeRTOS exception.\r
   9         **NOTE** The exception to the GPL is included to allow you to distribute a\r
  10         combined work that includes FreeRTOS without being obliged to provide the \r
  11         source code for proprietary components outside of the FreeRTOS kernel.  \r
  12         Alternative commercial license and support terms are also available upon \r
  13         request.  See the licensing section of http://www.FreeRTOS.org for full \r
  14         license details.\r
  15 \r
  16         FreeRTOS is distributed in the hope that it will be useful,     but WITHOUT\r
  17         ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or\r
  18         FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
  19         more details.\r
  20 \r
  21         You should have received a copy of the GNU General Public License along\r
  22         with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59\r
  23         Temple Place, Suite 330, Boston, MA  02111-1307  USA.\r
  24 \r
  25 \r
  26         ***************************************************************************\r
  27         *                                                                         *\r
  28         * Looking for a quick start?  Then check out the FreeRTOS eBook!          *\r
  29         * See http://www.FreeRTOS.org/Documentation for details                   *\r
  30         *                                                                         *\r
  31         ***************************************************************************\r
  32 \r
  33         1 tab == 4 spaces!\r
  34 \r
  35         Please ensure to read the configuration and relevant port sections of the\r
  36         online documentation.\r
  37 \r
  38         http://www.FreeRTOS.org - Documentation, latest information, license and\r
  39         contact details.\r
  40 \r
  41         http://www.SafeRTOS.com - A version that is certified for use in safety\r
  42         critical systems.\r
  43 \r
  44         http://www.OpenRTOS.com - Commercial support, development, porting,\r
  45         licensing and training services.\r
  46 */\r
  47 \r
  48 /*\r
  49  * Creates all the demo application tasks, then starts the scheduler.  The WEB\r
  50  * documentation provides more details of the demo application tasks.\r
  51  * \r
  52  * In addition to the standard demo tasks, the follow demo specific tasks are\r
  53  * create:\r
  54  *\r
  55  * The "Check" task.  This only executes every three seconds but has the highest \r
  56  * priority so is guaranteed to get processor time.  Its main function is to \r
  57  * check that all the other tasks are still operational.  Most tasks maintain \r
  58  * a unique count that is incremented each time the task successfully completes \r
  59  * its function.  Should any error occur within such a task the count is \r
  60  * permanently halted.  The check task inspects the count of each task to ensure \r
  61  * it has changed since the last time the check task executed.  If all the count \r
  62  * variables have changed all the tasks are still executing error free, and the \r
  63  * check task toggles the onboard LED.  Should any task contain an error at any time \r
  64  * the LED toggle rate will change from 3 seconds to 500ms.\r
  65  *\r
  66  * The "Register Check" tasks.  These tasks fill the CPU registers with known\r
  67  * values, then check that each register still contains the expected value, the\r
  68  * discovery of an unexpected value being indicative of an error in the RTOS\r
  69  * context switch mechanism.  The register check tasks operate at low priority\r
  70  * so are switched in and out frequently.\r
  71  *\r
  72  */\r
  73 \r
  74 /* Scheduler includes. */\r
  75 #include "FreeRTOS.h"\r
  76 #include "task.h"\r
  77 \r
  78 /* Xilinx library includes. */\r
  79 #include "xcache_l.h"\r
  80 #include "xintc.h"\r
  81 \r
  82 /* Demo application includes. */\r
  83 #include "flash.h"\r
  84 #include "integer.h"\r
  85 #include "comtest2.h"\r
  86 #include "semtest.h"\r
  87 #include "BlockQ.h"\r
  88 #include "dynamic.h"\r
  89 #include "GenQTest.h"\r
  90 #include "QPeek.h"\r
  91 #include "blocktim.h"\r
  92 #include "death.h"\r
  93 #include "partest.h"\r
  94 #include "countsem.h"\r
  95 #include "recmutex.h"\r
  96 #include "flop.h"\r
  97 #include "flop-reg-test.h"\r
  98 \r
  99 /* Priorities assigned to the demo tasks. */\r
 100 #define mainCHECK_TASK_PRIORITY                 ( tskIDLE_PRIORITY + 4 )\r
 101 #define mainSEM_TEST_PRIORITY                   ( tskIDLE_PRIORITY + 2 )\r
 102 #define mainCOM_TEST_PRIORITY                   ( tskIDLE_PRIORITY + 1 )\r
 103 #define mainQUEUE_BLOCK_PRIORITY                ( tskIDLE_PRIORITY + 1 )\r
 104 #define mainDEATH_PRIORITY                              ( tskIDLE_PRIORITY + 1 )\r
 105 #define mainLED_TASK_PRIORITY                   ( tskIDLE_PRIORITY + 1 )\r
 106 #define mainGENERIC_QUEUE_PRIORITY              ( tskIDLE_PRIORITY )\r
 107 #define mainQUEUE_POLL_PRIORITY                 ( tskIDLE_PRIORITY + 1 )\r
 108 #define mainFLOP_PRIORITY                               ( tskIDLE_PRIORITY )\r
 109 \r
 110 /* The first LED used by the COM test and check tasks respectively. */\r
 111 #define mainCOM_TEST_LED                                ( 4 )\r
 112 #define mainCHECK_TEST_LED                              ( 3 )\r
 113 \r
 114 /* The baud rate used by the comtest tasks is set by the hardware, so the\r
 115 baud rate parameters passed into the comtest initialisation has no effect. */\r
 116 #define mainBAUD_SET_IN_HARDWARE                ( 0 )\r
 117 \r
 118 /* Delay periods used by the check task.  If no errors have been found then\r
 119 the check LED will toggle every mainNO_ERROR_CHECK_DELAY milliseconds.  If an\r
 120 error has been found at any time then the toggle rate will increase to \r
 121 mainERROR_CHECK_DELAY milliseconds. */\r
 122 #define mainNO_ERROR_CHECK_DELAY                ( ( portTickType ) 3000 / portTICK_RATE_MS  )\r
 123 #define mainERROR_CHECK_DELAY                   ( ( portTickType ) 500 / portTICK_RATE_MS  )\r
 124 \r
 125 \r
 126 /* \r
 127  * The tasks defined within this file - described within the comments at the\r
 128  * head of this page. \r
 129  */\r
 130 static void prvRegTestTask1( void *pvParameters );\r
 131 static void prvRegTestTask2( void *pvParameters );\r
 132 static void prvErrorChecks( void *pvParameters );\r
 133 \r
 134 /*\r
 135  * Called by the 'check' task to inspect all the standard demo tasks within\r
 136  * the system, as described within the comments at the head of this page.\r
 137  */\r
 138 static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void );\r
 139 \r
 140 /*\r
 141  * Perform any hardware initialisation required by the demo application.\r
 142  */\r
 143 static void prvSetupHardware( void );\r
 144 \r
 145 /*-----------------------------------------------------------*/\r
 146 \r
 147 /* xRegTestStatus will get set to pdFAIL by the regtest tasks if they\r
 148 discover an unexpected value. */\r
 149 static volatile unsigned portBASE_TYPE xRegTestStatus = pdPASS;\r
 150 \r
 151 /* Counters used to ensure the regtest tasks are still running. */\r
 152 static volatile unsigned portLONG ulRegTest1Counter = 0UL, ulRegTest2Counter = 0UL;\r
 153 \r
 154 /*-----------------------------------------------------------*/\r
 155 \r
 156 int main( void )\r
 157 {\r
 158 \r
 159         /* Must be called prior to installing any interrupt handlers! */\r
 160         vPortSetupInterruptController();\r
 161 \r
 162         /* In this case prvSetupHardware() just enables the caches and and\r
 163         configures the IO ports for the LED outputs. */\r
 164         prvSetupHardware();\r
 165 \r
 166         /* Start the standard demo application tasks.  Note that the baud rate used\r
 167         by the comtest tasks is set by the hardware, so the baud rate parameter\r
 168         passed has no effect. */\r
 169         vStartLEDFlashTasks( mainLED_TASK_PRIORITY );   \r
 170         vStartIntegerMathTasks( tskIDLE_PRIORITY );\r
 171         vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainBAUD_SET_IN_HARDWARE, mainCOM_TEST_LED );\r
 172         vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );\r
 173         vStartBlockingQueueTasks ( mainQUEUE_BLOCK_PRIORITY );  \r
 174         vStartDynamicPriorityTasks();   \r
 175         vStartGenericQueueTasks( mainGENERIC_QUEUE_PRIORITY );\r
 176         vStartQueuePeekTasks();\r
 177         vCreateBlockTimeTasks();\r
 178         vStartCountingSemaphoreTasks();\r
 179         vStartRecursiveMutexTasks();\r
 180 \r
 181         #if ( configUSE_FPU == 1 )\r
 182                 vStartMathTasks( mainFLOP_PRIORITY );\r
 183                 vStartFlopRegTests();\r
 184         #endif\r
 185 \r
 186         /* Create the tasks defined within this file. */\r
 187         xTaskCreate( prvRegTestTask1, ( signed portCHAR * ) "Regtest1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
 188         xTaskCreate( prvRegTestTask2, ( signed portCHAR * ) "Regtest2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
 189         xTaskCreate( prvErrorChecks, ( signed portCHAR * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );\r
 190 \r
 191         /* The suicide tasks must be started last as they record the number of other\r
 192         tasks that exist within the system.  The value is then used to ensure at run\r
 193         time the number of tasks that exists is within expected bounds. */\r
 194         vCreateSuicidalTasks( mainDEATH_PRIORITY );\r
 195 \r
 196         /* Now start the scheduler.  Following this call the created tasks should\r
 197         be executing. */        \r
 198         vTaskStartScheduler();\r
 199 \r
 200         /* vTaskStartScheduler() will only return if an error occurs while the \r
 201         idle task is being created. */\r
 202         for( ;; );\r
 203 \r
 204         return 0;\r
 205 }\r
 206 /*-----------------------------------------------------------*/\r
 207 \r
 208 static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void )\r
 209 {\r
 210 portBASE_TYPE lReturn = pdPASS;\r
 211 static unsigned portLONG ulLastRegTest1Counter= 0UL, ulLastRegTest2Counter = 0UL;\r
 212 \r
 213         /* The demo tasks maintain a count that increments every cycle of the task\r
 214         provided that the task has never encountered an error.  This function \r
 215         checks the counts maintained by the tasks to ensure they are still being\r
 216         incremented.  A count remaining at the same value between calls therefore\r
 217         indicates that an error has been detected. */\r
 218 \r
 219         if( xAreIntegerMathsTaskStillRunning() != pdTRUE )\r
 220         {\r
 221                 lReturn = pdFAIL;\r
 222         }\r
 223 \r
 224         if( xAreComTestTasksStillRunning() != pdTRUE )\r
 225         {\r
 226                 lReturn = pdFAIL;\r
 227         }\r
 228         \r
 229         if( xAreSemaphoreTasksStillRunning() != pdTRUE )\r
 230         {\r
 231                 lReturn = pdFAIL;\r
 232         }\r
 233         \r
 234         if( xAreBlockingQueuesStillRunning() != pdTRUE )\r
 235         {\r
 236                 lReturn = pdFAIL;\r
 237         }\r
 238         \r
 239         if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )\r
 240         {\r
 241                 lReturn = pdFAIL;\r
 242         }\r
 243         \r
 244         if( xIsCreateTaskStillRunning() != pdTRUE )\r
 245         {\r
 246                 lReturn = pdFAIL;\r
 247         }\r
 248         \r
 249         if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )\r
 250         {\r
 251                 lReturn = pdFAIL;\r
 252         }\r
 253         \r
 254         if( xAreGenericQueueTasksStillRunning() != pdTRUE )\r
 255         {\r
 256                 lReturn = pdFAIL;\r
 257         }\r
 258         \r
 259         if( xAreQueuePeekTasksStillRunning() != pdTRUE )\r
 260         {\r
 261                 lReturn = pdFAIL;\r
 262         }\r
 263 \r
 264         if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )\r
 265         {\r
 266                 lReturn = pdFAIL;\r
 267         }\r
 268 \r
 269         if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )\r
 270         {\r
 271                 lReturn = pdFAIL;\r
 272         }\r
 273 \r
 274         #if ( configUSE_FPU == 1 )\r
 275                 if( xAreMathsTaskStillRunning() != pdTRUE )\r
 276                 {\r
 277                         lReturn = pdFAIL;\r
 278                 }\r
 279 \r
 280                 if( xAreFlopRegisterTestsStillRunning() != pdTRUE )\r
 281                 {\r
 282                         lReturn = pdFAIL;\r
 283                 }\r
 284         #endif\r
 285 \r
 286         /* Have the register test tasks found any errors? */\r
 287         if( xRegTestStatus != pdPASS )\r
 288         {\r
 289                 lReturn = pdFAIL;\r
 290         }\r
 291 \r
 292         /* Are the register test tasks still looping? */\r
 293         if( ulLastRegTest1Counter == ulRegTest1Counter )\r
 294         {\r
 295                 lReturn = pdFAIL;\r
 296         }\r
 297         else\r
 298         {\r
 299                 ulLastRegTest1Counter = ulRegTest1Counter;\r
 300         }\r
 301 \r
 302         if( ulLastRegTest2Counter == ulRegTest2Counter )\r
 303         {\r
 304                 lReturn = pdFAIL;\r
 305         }\r
 306         else\r
 307         {\r
 308                 ulLastRegTest2Counter = ulRegTest2Counter;\r
 309         }\r
 310 \r
 311         return lReturn;\r
 312 }\r
 313 /*-----------------------------------------------------------*/\r
 314 \r
 315 static void prvErrorChecks( void *pvParameters )\r
 316 {\r
 317 portTickType xDelayPeriod = mainNO_ERROR_CHECK_DELAY, xLastExecutionTime;\r
 318 volatile unsigned portBASE_TYPE uxFreeStack;\r
 319 \r
 320         /* Just to remove compiler warning. */\r
 321         ( void ) pvParameters;\r
 322 \r
 323         /* This call is just to demonstrate the use of the function - nothing is\r
 324         done with the value.  You would expect the stack high water mark to be\r
 325         lower (the function to return a larger value) here at function entry than\r
 326         later following calls to other functions. */\r
 327         uxFreeStack = uxTaskGetStackHighWaterMark( NULL );\r
 328 \r
 329         /* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()\r
 330         works correctly. */\r
 331         xLastExecutionTime = xTaskGetTickCount();\r
 332 \r
 333         /* Cycle for ever, delaying then checking all the other tasks are still\r
 334         operating without error. */\r
 335         for( ;; )\r
 336         {\r
 337                 /* Again just for demo purposes - uxFreeStack should have a lower value\r
 338                 here than following the call to uxTaskGetStackHighWaterMark() on the\r
 339                 task entry. */\r
 340                 uxFreeStack = uxTaskGetStackHighWaterMark( NULL );\r
 341 \r
 342                 /* Wait until it is time to check again.  The time we wait here depends\r
 343                 on whether an error has been detected or not.  When an error is \r
 344                 detected the time is shortened resulting in a faster LED flash rate. */\r
 345                 vTaskDelayUntil( &xLastExecutionTime, xDelayPeriod );\r
 346 \r
 347                 /* See if the other tasks are all ok. */\r
 348                 if( prvCheckOtherTasksAreStillRunning() != pdPASS )\r
 349                 {\r
 350                         /* An error occurred in one of the tasks so shorten the delay \r
 351                         period - which has the effect of increasing the frequency of the\r
 352                         LED toggle. */\r
 353                         xDelayPeriod = mainERROR_CHECK_DELAY;\r
 354                 }\r
 355 \r
 356                 /* Flash! */\r
 357                 vParTestToggleLED( mainCHECK_TEST_LED );\r
 358         }\r
 359 }\r
 360 /*-----------------------------------------------------------*/\r
 361 \r
 362 static void prvSetupHardware( void )\r
 363 {\r
 364         XCache_EnableICache( 0x80000000 );\r
 365         XCache_EnableDCache( 0x80000000 );\r
 366 \r
 367         /* Setup the IO port for use with the LED outputs. */\r
 368         vParTestInitialise();\r
 369 }\r
 370 /*-----------------------------------------------------------*/\r
 371 \r
 372 void prvRegTest1Pass( void )\r
 373 {\r
 374         /* Called from the inline assembler - this cannot be static\r
 375         otherwise it can get optimised away. */\r
 376         ulRegTest1Counter++;\r
 377 }\r
 378 /*-----------------------------------------------------------*/\r
 379 \r
 380 void prvRegTest2Pass( void )\r
 381 {\r
 382         /* Called from the inline assembler - this cannot be static\r
 383         otherwise it can get optimised away. */\r
 384         ulRegTest2Counter++;\r
 385 }\r
 386 /*-----------------------------------------------------------*/\r
 387 \r
 388 void prvRegTestFail( void )\r
 389 {\r
 390         /* Called from the inline assembler - this cannot be static\r
 391         otherwise it can get optimised away. */\r
 392         xRegTestStatus = pdFAIL;\r
 393 }\r
 394 /*-----------------------------------------------------------*/\r
 395 \r
 396 static void prvRegTestTask1( void *pvParameters )\r
 397 {\r
 398         /* Just to remove compiler warning. */\r
 399         ( void ) pvParameters;\r
 400 \r
 401         /* The first register test task as described at the top of this file.  The\r
 402         values used in the registers are different to those use in the second \r
 403         register test task.  Also, unlike the second register test task, this task\r
 404         yields between setting the register values and subsequently checking the\r
 405         register values. */\r
 406         asm volatile\r
 407         (\r
 408                 "RegTest1Start:                                 \n\t" \\r
 409                 "                                                               \n\t" \\r
 410                 "       li              0, 301                          \n\t" \\r
 411                 "       mtspr   256, 0  #USPRG0         \n\t" \\r
 412                 "       li              0, 501                          \n\t" \\r
 413                 "       mtspr   8, 0    #LR                     \n\t" \\r
 414                 "       li              0, 4                            \n\t" \\r
 415                 "       mtspr   1, 0    #XER            \n\t" \\r
 416                 "                                                               \n\t" \\r
 417                 "       li              0, 1                            \n\t" \\r
 418                 "       li              2, 2                            \n\t" \\r
 419                 "       li              3, 3                            \n\t" \\r
 420                 "       li              4,      4                               \n\t" \\r
 421                 "       li              5,      5                               \n\t" \\r
 422                 "       li              6,      6                               \n\t" \\r
 423                 "       li              7,      7                               \n\t" \\r
 424                 "       li              8,      8                               \n\t" \\r
 425                 "       li              9,      9                               \n\t" \\r
 426                 "       li              10,     10                              \n\t" \\r
 427                 "       li              11,     11                              \n\t" \\r
 428                 "       li              12,     12                              \n\t" \\r
 429                 "       li              13,     13                              \n\t" \\r
 430                 "       li              14,     14                              \n\t" \\r
 431                 "       li              15,     15                              \n\t" \\r
 432                 "       li              16,     16                              \n\t" \\r
 433                 "       li              17,     17                              \n\t" \\r
 434                 "       li              18,     18                              \n\t" \\r
 435                 "       li              19,     19                              \n\t" \\r
 436                 "       li              20,     20                              \n\t" \\r
 437                 "       li              21,     21                              \n\t" \\r
 438                 "       li              22,     22                              \n\t" \\r
 439                 "       li              23,     23                              \n\t" \\r
 440                 "       li              24,     24                              \n\t" \\r
 441                 "       li              25,     25                              \n\t" \\r
 442                 "       li              26,     26                              \n\t" \\r
 443                 "       li              27,     27                              \n\t" \\r
 444                 "       li              28,     28                              \n\t" \\r
 445                 "       li              29,     29                              \n\t" \\r
 446                 "       li              30,     30                              \n\t" \\r
 447                 "       li              31,     31                              \n\t" \\r
 448                 "                                                               \n\t" \\r
 449                 "       sc                                                      \n\t" \\r
 450                 "       nop                                                     \n\t" \\r
 451                 "                                                               \n\t" \\r
 452                 "       cmpwi   0, 1                            \n\t" \\r
 453                 "       bne     RegTest1Fail                    \n\t" \\r
 454                 "       cmpwi   2, 2                            \n\t" \\r
 455                 "       bne     RegTest1Fail                    \n\t" \\r
 456                 "       cmpwi   3, 3                            \n\t" \\r
 457                 "       bne     RegTest1Fail                    \n\t" \\r
 458                 "       cmpwi   4, 4                            \n\t" \\r
 459                 "       bne     RegTest1Fail                    \n\t" \\r
 460                 "       cmpwi   5, 5                            \n\t" \\r
 461                 "       bne     RegTest1Fail                    \n\t" \\r
 462                 "       cmpwi   6, 6                            \n\t" \\r
 463                 "       bne     RegTest1Fail                    \n\t" \\r
 464                 "       cmpwi   7, 7                            \n\t" \\r
 465                 "       bne     RegTest1Fail                    \n\t" \\r
 466                 "       cmpwi   8, 8                            \n\t" \\r
 467                 "       bne     RegTest1Fail                    \n\t" \\r
 468                 "       cmpwi   9, 9                            \n\t" \\r
 469                 "       bne     RegTest1Fail                    \n\t" \\r
 470                 "       cmpwi   10, 10                          \n\t" \\r
 471                 "       bne     RegTest1Fail                    \n\t" \\r
 472                 "       cmpwi   11, 11                          \n\t" \\r
 473                 "       bne     RegTest1Fail                    \n\t" \\r
 474                 "       cmpwi   12, 12                          \n\t" \\r
 475                 "       bne     RegTest1Fail                    \n\t" \\r
 476                 "       cmpwi   13, 13                          \n\t" \\r
 477                 "       bne     RegTest1Fail                    \n\t" \\r
 478                 "       cmpwi   14, 14                          \n\t" \\r
 479                 "       bne     RegTest1Fail                    \n\t" \\r
 480                 "       cmpwi   15, 15                          \n\t" \\r
 481                 "       bne     RegTest1Fail                    \n\t" \\r
 482                 "       cmpwi   16, 16                          \n\t" \\r
 483                 "       bne     RegTest1Fail                    \n\t" \\r
 484                 "       cmpwi   17, 17                          \n\t" \\r
 485                 "       bne     RegTest1Fail                    \n\t" \\r
 486                 "       cmpwi   18, 18                          \n\t" \\r
 487                 "       bne     RegTest1Fail                    \n\t" \\r
 488                 "       cmpwi   19, 19                          \n\t" \\r
 489                 "       bne     RegTest1Fail                    \n\t" \\r
 490                 "       cmpwi   20, 20                          \n\t" \\r
 491                 "       bne     RegTest1Fail                    \n\t" \\r
 492                 "       cmpwi   21, 21                          \n\t" \\r
 493                 "       bne     RegTest1Fail                    \n\t" \\r
 494                 "       cmpwi   22, 22                          \n\t" \\r
 495                 "       bne     RegTest1Fail                    \n\t" \\r
 496                 "       cmpwi   23, 23                          \n\t" \\r
 497                 "       bne     RegTest1Fail                    \n\t" \\r
 498                 "       cmpwi   24, 24                          \n\t" \\r
 499                 "       bne     RegTest1Fail                    \n\t" \\r
 500                 "       cmpwi   25, 25                          \n\t" \\r
 501                 "       bne     RegTest1Fail                    \n\t" \\r
 502                 "       cmpwi   26, 26                          \n\t" \\r
 503                 "       bne     RegTest1Fail                    \n\t" \\r
 504                 "       cmpwi   27, 27                          \n\t" \\r
 505                 "       bne     RegTest1Fail                    \n\t" \\r
 506                 "       cmpwi   28, 28                          \n\t" \\r
 507                 "       bne     RegTest1Fail                    \n\t" \\r
 508                 "       cmpwi   29, 29                          \n\t" \\r
 509                 "       bne     RegTest1Fail                    \n\t" \\r
 510                 "       cmpwi   30, 30                          \n\t" \\r
 511                 "       bne     RegTest1Fail                    \n\t" \\r
 512                 "       cmpwi   31, 31                          \n\t" \\r
 513                 "       bne     RegTest1Fail                    \n\t" \\r
 514                 "                                                               \n\t" \\r
 515                 "       mfspr   0, 256  #USPRG0         \n\t" \\r
 516                 "       cmpwi   0, 301                          \n\t" \\r
 517                 "       bne     RegTest1Fail                    \n\t" \\r
 518                 "       mfspr   0, 8    #LR                     \n\t" \\r
 519                 "       cmpwi   0, 501                          \n\t" \\r
 520                 "       bne     RegTest1Fail                    \n\t" \\r
 521                 "       mfspr   0, 1    #XER            \n\t" \\r
 522                 "       cmpwi   0, 4                            \n\t" \\r
 523                 "       bne     RegTest1Fail                    \n\t" \\r
 524                 "                                                               \n\t" \\r
 525                 "       bl prvRegTest1Pass                      \n\t" \\r
 526                 "       b RegTest1Start                         \n\t" \\r
 527                 "                                                               \n\t" \\r
 528                 "RegTest1Fail:                                  \n\t" \\r
 529                 "                                                               \n\t" \\r
 530                 "                                                               \n\t" \\r
 531                 "       bl prvRegTestFail                       \n\t" \\r
 532                 "       b RegTest1Start                         \n\t" \\r
 533         );\r
 534 }\r
 535 /*-----------------------------------------------------------*/\r
 536 \r
 537 static void prvRegTestTask2( void *pvParameters )\r
 538 {\r
 539         /* Just to remove compiler warning. */\r
 540         ( void ) pvParameters;\r
 541 \r
 542         /* The second register test task as described at the top of this file.  \r
 543         Note that this task fills the registers with different values to the\r
 544         first register test task. */\r
 545         asm volatile\r
 546         (\r
 547                 "RegTest2Start:                                 \n\t" \\r
 548                 "                                                               \n\t" \\r
 549                 "       li              0, 300                          \n\t" \\r
 550                 "       mtspr   256, 0  #USPRG0         \n\t" \\r
 551                 "       li              0, 500                          \n\t" \\r
 552                 "       mtspr   8, 0    #LR                     \n\t" \\r
 553                 "       li              0, 4                            \n\t" \\r
 554                 "       mtspr   1, 0    #XER            \n\t" \\r
 555                 "                                                               \n\t" \\r
 556                 "       li              0, 11                           \n\t" \\r
 557                 "       li              2, 12                           \n\t" \\r
 558                 "       li              3, 13                           \n\t" \\r
 559                 "       li              4,      14                              \n\t" \\r
 560                 "       li              5,      15                              \n\t" \\r
 561                 "       li              6,      16                              \n\t" \\r
 562                 "       li              7,      17                              \n\t" \\r
 563                 "       li              8,      18                              \n\t" \\r
 564                 "       li              9,      19                              \n\t" \\r
 565                 "       li              10,     110                             \n\t" \\r
 566                 "       li              11,     111                             \n\t" \\r
 567                 "       li              12,     112                             \n\t" \\r
 568                 "       li              13,     113                             \n\t" \\r
 569                 "       li              14,     114                             \n\t" \\r
 570                 "       li              15,     115                             \n\t" \\r
 571                 "       li              16,     116                             \n\t" \\r
 572                 "       li              17,     117                             \n\t" \\r
 573                 "       li              18,     118                             \n\t" \\r
 574                 "       li              19,     119                             \n\t" \\r
 575                 "       li              20,     120                             \n\t" \\r
 576                 "       li              21,     121                             \n\t" \\r
 577                 "       li              22,     122                             \n\t" \\r
 578                 "       li              23,     123                             \n\t" \\r
 579                 "       li              24,     124                             \n\t" \\r
 580                 "       li              25,     125                             \n\t" \\r
 581                 "       li              26,     126                             \n\t" \\r
 582                 "       li              27,     127                             \n\t" \\r
 583                 "       li              28,     128                             \n\t" \\r
 584                 "       li              29,     129                             \n\t" \\r
 585                 "       li              30,     130                             \n\t" \\r
 586                 "       li              31,     131                             \n\t" \\r
 587                 "                                                               \n\t" \\r
 588                 "       cmpwi   0, 11                           \n\t" \\r
 589                 "       bne     RegTest2Fail                    \n\t" \\r
 590                 "       cmpwi   2, 12                           \n\t" \\r
 591                 "       bne     RegTest2Fail                    \n\t" \\r
 592                 "       cmpwi   3, 13                           \n\t" \\r
 593                 "       bne     RegTest2Fail                    \n\t" \\r
 594                 "       cmpwi   4, 14                           \n\t" \\r
 595                 "       bne     RegTest2Fail                    \n\t" \\r
 596                 "       cmpwi   5, 15                           \n\t" \\r
 597                 "       bne     RegTest2Fail                    \n\t" \\r
 598                 "       cmpwi   6, 16                           \n\t" \\r
 599                 "       bne     RegTest2Fail                    \n\t" \\r
 600                 "       cmpwi   7, 17                           \n\t" \\r
 601                 "       bne     RegTest2Fail                    \n\t" \\r
 602                 "       cmpwi   8, 18                           \n\t" \\r
 603                 "       bne     RegTest2Fail                    \n\t" \\r
 604                 "       cmpwi   9, 19                           \n\t" \\r
 605                 "       bne     RegTest2Fail                    \n\t" \\r
 606                 "       cmpwi   10, 110                         \n\t" \\r
 607                 "       bne     RegTest2Fail                    \n\t" \\r
 608                 "       cmpwi   11, 111                         \n\t" \\r
 609                 "       bne     RegTest2Fail                    \n\t" \\r
 610                 "       cmpwi   12, 112                         \n\t" \\r
 611                 "       bne     RegTest2Fail                    \n\t" \\r
 612                 "       cmpwi   13, 113                         \n\t" \\r
 613                 "       bne     RegTest2Fail                    \n\t" \\r
 614                 "       cmpwi   14, 114                         \n\t" \\r
 615                 "       bne     RegTest2Fail                    \n\t" \\r
 616                 "       cmpwi   15, 115                         \n\t" \\r
 617                 "       bne     RegTest2Fail                    \n\t" \\r
 618                 "       cmpwi   16, 116                         \n\t" \\r
 619                 "       bne     RegTest2Fail                    \n\t" \\r
 620                 "       cmpwi   17, 117                         \n\t" \\r
 621                 "       bne     RegTest2Fail                    \n\t" \\r
 622                 "       cmpwi   18, 118                         \n\t" \\r
 623                 "       bne     RegTest2Fail                    \n\t" \\r
 624                 "       cmpwi   19, 119                         \n\t" \\r
 625                 "       bne     RegTest2Fail                    \n\t" \\r
 626                 "       cmpwi   20, 120                         \n\t" \\r
 627                 "       bne     RegTest2Fail                    \n\t" \\r
 628                 "       cmpwi   21, 121                         \n\t" \\r
 629                 "       bne     RegTest2Fail                    \n\t" \\r
 630                 "       cmpwi   22, 122                         \n\t" \\r
 631                 "       bne     RegTest2Fail                    \n\t" \\r
 632                 "       cmpwi   23, 123                         \n\t" \\r
 633                 "       bne     RegTest2Fail                    \n\t" \\r
 634                 "       cmpwi   24, 124                         \n\t" \\r
 635                 "       bne     RegTest2Fail                    \n\t" \\r
 636                 "       cmpwi   25, 125                         \n\t" \\r
 637                 "       bne     RegTest2Fail                    \n\t" \\r
 638                 "       cmpwi   26, 126                         \n\t" \\r
 639                 "       bne     RegTest2Fail                    \n\t" \\r
 640                 "       cmpwi   27, 127                         \n\t" \\r
 641                 "       bne     RegTest2Fail                    \n\t" \\r
 642                 "       cmpwi   28, 128                         \n\t" \\r
 643                 "       bne     RegTest2Fail                    \n\t" \\r
 644                 "       cmpwi   29, 129                         \n\t" \\r
 645                 "       bne     RegTest2Fail                    \n\t" \\r
 646                 "       cmpwi   30, 130                         \n\t" \\r
 647                 "       bne     RegTest2Fail                    \n\t" \\r
 648                 "       cmpwi   31, 131                         \n\t" \\r
 649                 "       bne     RegTest2Fail                    \n\t" \\r
 650                 "                                                               \n\t" \\r
 651                 "       mfspr   0, 256  #USPRG0         \n\t" \\r
 652                 "       cmpwi   0, 300                          \n\t" \\r
 653                 "       bne     RegTest2Fail                    \n\t" \\r
 654                 "       mfspr   0, 8    #LR                     \n\t" \\r
 655                 "       cmpwi   0, 500                          \n\t" \\r
 656                 "       bne     RegTest2Fail                    \n\t" \\r
 657                 "       mfspr   0, 1    #XER            \n\t" \\r
 658                 "       cmpwi   0, 4                            \n\t" \\r
 659                 "       bne     RegTest2Fail                    \n\t" \\r
 660                 "                                                               \n\t" \\r
 661                 "       bl prvRegTest2Pass                      \n\t" \\r
 662                 "       b RegTest2Start                         \n\t" \\r
 663                 "                                                               \n\t" \\r
 664                 "RegTest2Fail:                                  \n\t" \\r
 665                 "                                                               \n\t" \\r
 666                 "                                                               \n\t" \\r
 667                 "       bl prvRegTestFail                       \n\t" \\r
 668                 "       b RegTest2Start                         \n\t" \\r
 669         );\r
 670 }\r
 671 /*-----------------------------------------------------------*/\r
 672 \r
 673 /* This hook function will get called if there is a suspected stack overflow.\r
 674 An overflow can cause the task name to be corrupted, in which case the task\r
 675 handle needs to be used to determine the offending task. */\r
 676 void vApplicationStackOverflowHook( xTaskHandle xTask, signed portCHAR *pcTaskName );\r
 677 void vApplicationStackOverflowHook( xTaskHandle xTask, signed portCHAR *pcTaskName )\r
 678 {\r
 679 /* To prevent the optimiser removing the variables. */\r
 680 volatile xTaskHandle xTaskIn = xTask;\r
 681 volatile signed portCHAR *pcTaskNameIn = pcTaskName;\r
 682 \r
 683         /* Remove compiler warnings. */\r
 684         ( void ) xTaskIn;\r
 685         ( void ) pcTaskNameIn;\r
 686 \r
 687         /* The following three calls are simply to stop compiler warnings about the\r
 688         functions not being used - they are called from the inline assembly. */\r
 689         prvRegTest1Pass();\r
 690         prvRegTest2Pass();\r
 691         prvRegTestFail();\r
 692 \r
 693         for( ;; );\r
 694 }\r
 695 \r
 696 \r
 697 \r