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

   1 /*\r
   2         FreeRTOS.org V5.3.1 - Copyright (C) 2003-2009 Richard Barry.\r
   3 \r
   4         This file is part of the FreeRTOS.org distribution.\r
   5 \r
   6         FreeRTOS.org is free software; you can redistribute it and/or modify it\r
   7         under the terms of the GNU General Public License (version 2) as published\r
   8         by the 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.org without being obliged to provide\r
  11         the source code for any proprietary components.  Alternative commercial\r
  12         license and support terms are also available upon request.  See the \r
  13         licensing section of http://www.FreeRTOS.org for full details.\r
  14 \r
  15         FreeRTOS.org is distributed in the hope that it will be useful, but WITHOUT\r
  16         ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or\r
  17         FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
  18         more details.\r
  19 \r
  20         You should have received a copy of the GNU General Public License along\r
  21         with FreeRTOS.org; if not, write to the Free Software Foundation, Inc., 59\r
  22         Temple Place, Suite 330, Boston, MA  02111-1307  USA.\r
  23 \r
  24 \r
  25         ***************************************************************************\r
  26         *                                                                         *\r
  27         * Get the FreeRTOS eBook!  See http://www.FreeRTOS.org/Documentation      *\r
  28         *                                                                         *\r
  29         * This is a concise, step by step, 'hands on' guide that describes both   *\r
  30         * general multitasking concepts and FreeRTOS specifics. It presents and   *\r
  31         * explains numerous examples that are written using the FreeRTOS API.     *\r
  32         * Full source code for all the examples is provided in an accompanying    *\r
  33         * .zip file.                                                              *\r
  34         *                                                                         *\r
  35         ***************************************************************************\r
  36 \r
  37         1 tab == 4 spaces!\r
  38 \r
  39         Please ensure to read the configuration and relevant port sections of the\r
  40         online documentation.\r
  41 \r
  42         http://www.FreeRTOS.org - Documentation, latest information, license and\r
  43         contact details.\r
  44 \r
  45         http://www.SafeRTOS.com - A version that is certified for use in safety\r
  46         critical systems.\r
  47 \r
  48         http://www.OpenRTOS.com - Commercial support, development, porting,\r
  49         licensing and training services.\r
  50 */\r
  51 \r
  52 /*\r
  53  * Creates all the demo application tasks, then starts the scheduler.  The WEB\r
  54  * documentation provides more details of the demo application tasks.\r
  55  * \r
  56  * In addition to the standard demo tasks, the follow demo specific tasks are\r
  57  * create:\r
  58  *\r
  59  * The "Check" task.  This only executes every three seconds but has the highest \r
  60  * priority so is guaranteed to get processor time.  Its main function is to \r
  61  * check that all the other tasks are still operational.  Most tasks maintain \r
  62  * a unique count that is incremented each time the task successfully completes \r
  63  * its function.  Should any error occur within such a task the count is \r
  64  * permanently halted.  The check task inspects the count of each task to ensure \r
  65  * it has changed since the last time the check task executed.  If all the count \r
  66  * variables have changed all the tasks are still executing error free, and the \r
  67  * check task toggles the onboard LED.  Should any task contain an error at any time \r
  68  * the LED toggle rate will change from 3 seconds to 500ms.\r
  69  *\r
  70  * The "Register Check" tasks.  These tasks fill the CPU registers with known\r
  71  * values, then check that each register still contains the expected value, the\r
  72  * discovery of an unexpected value being indicative of an error in the RTOS\r
  73  * context switch mechanism.  The register check tasks operate at low priority\r
  74  * so are switched in and out frequently.\r
  75  *\r
  76  */\r
  77 \r
  78 /* Scheduler includes. */\r
  79 #include "FreeRTOS.h"\r
  80 #include "task.h"\r
  81 \r
  82 /* Xilinx library includes. */\r
  83 #include "xcache_l.h"\r
  84 #include "xintc.h"\r
  85 \r
  86 /* Demo application includes. */\r
  87 #include "flash.h"\r
  88 #include "integer.h"\r
  89 #include "comtest2.h"\r
  90 #include "semtest.h"\r
  91 #include "BlockQ.h"\r
  92 #include "dynamic.h"\r
  93 #include "GenQTest.h"\r
  94 #include "QPeek.h"\r
  95 #include "blocktim.h"\r
  96 #include "death.h"\r
  97 #include "partest.h"\r
  98 #include "countsem.h"\r
  99 #include "recmutex.h"\r
 100 #include "flop.h"\r
 101 #include "flop-reg-test.h"\r
 102 \r
 103 /* Priorities assigned to the demo tasks. */\r
 104 #define mainCHECK_TASK_PRIORITY                 ( tskIDLE_PRIORITY + 4 )\r
 105 #define mainSEM_TEST_PRIORITY                   ( tskIDLE_PRIORITY + 2 )\r
 106 #define mainCOM_TEST_PRIORITY                   ( tskIDLE_PRIORITY + 1 )\r
 107 #define mainQUEUE_BLOCK_PRIORITY                ( tskIDLE_PRIORITY + 1 )\r
 108 #define mainDEATH_PRIORITY                              ( tskIDLE_PRIORITY + 1 )\r
 109 #define mainLED_TASK_PRIORITY                   ( tskIDLE_PRIORITY + 1 )\r
 110 #define mainGENERIC_QUEUE_PRIORITY              ( tskIDLE_PRIORITY )\r
 111 #define mainQUEUE_POLL_PRIORITY                 ( tskIDLE_PRIORITY + 1 )\r
 112 #define mainFLOP_PRIORITY                               ( tskIDLE_PRIORITY )\r
 113 \r
 114 /* The first LED used by the COM test and check tasks respectively. */\r
 115 #define mainCOM_TEST_LED                                ( 4 )\r
 116 #define mainCHECK_TEST_LED                              ( 3 )\r
 117 \r
 118 /* The baud rate used by the comtest tasks is set by the hardware, so the\r
 119 baud rate parameters passed into the comtest initialisation has no effect. */\r
 120 #define mainBAUD_SET_IN_HARDWARE                ( 0 )\r
 121 \r
 122 /* Delay periods used by the check task.  If no errors have been found then\r
 123 the check LED will toggle every mainNO_ERROR_CHECK_DELAY milliseconds.  If an\r
 124 error has been found at any time then the toggle rate will increase to \r
 125 mainERROR_CHECK_DELAY milliseconds. */\r
 126 #define mainNO_ERROR_CHECK_DELAY                ( ( portTickType ) 3000 / portTICK_RATE_MS  )\r
 127 #define mainERROR_CHECK_DELAY                   ( ( portTickType ) 500 / portTICK_RATE_MS  )\r
 128 \r
 129 \r
 130 /* \r
 131  * The tasks defined within this file - described within the comments at the\r
 132  * head of this page. \r
 133  */\r
 134 static void prvRegTestTask1( void *pvParameters );\r
 135 static void prvRegTestTask2( void *pvParameters );\r
 136 static void prvErrorChecks( void *pvParameters );\r
 137 \r
 138 /*\r
 139  * Called by the 'check' task to inspect all the standard demo tasks within\r
 140  * the system, as described within the comments at the head of this page.\r
 141  */\r
 142 static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void );\r
 143 \r
 144 /*\r
 145  * Perform any hardware initialisation required by the demo application.\r
 146  */\r
 147 static void prvSetupHardware( void );\r
 148 \r
 149 /*-----------------------------------------------------------*/\r
 150 \r
 151 /* xRegTestStatus will get set to pdFAIL by the regtest tasks if they\r
 152 discover an unexpected value. */\r
 153 static volatile unsigned portBASE_TYPE xRegTestStatus = pdPASS;\r
 154 \r
 155 /* Counters used to ensure the regtest tasks are still running. */\r
 156 static volatile unsigned portLONG ulRegTest1Counter = 0UL, ulRegTest2Counter = 0UL;\r
 157 \r
 158 /*-----------------------------------------------------------*/\r
 159 \r
 160 int main( void )\r
 161 {\r
 162 \r
 163         /* Must be called prior to installing any interrupt handlers! */\r
 164         vPortSetupInterruptController();\r
 165 \r
 166         /* In this case prvSetupHardware() just enables the caches and and\r
 167         configures the IO ports for the LED outputs. */\r
 168         prvSetupHardware();\r
 169 \r
 170         /* Start the standard demo application tasks.  Note that the baud rate used\r
 171         by the comtest tasks is set by the hardware, so the baud rate parameter\r
 172         passed has no effect. */\r
 173         vStartLEDFlashTasks( mainLED_TASK_PRIORITY );   \r
 174         vStartIntegerMathTasks( tskIDLE_PRIORITY );\r
 175         vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainBAUD_SET_IN_HARDWARE, mainCOM_TEST_LED );\r
 176         vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );\r
 177         vStartBlockingQueueTasks ( mainQUEUE_BLOCK_PRIORITY );  \r
 178         vStartDynamicPriorityTasks();   \r
 179         vStartGenericQueueTasks( mainGENERIC_QUEUE_PRIORITY );\r
 180         vStartQueuePeekTasks();\r
 181         vCreateBlockTimeTasks();\r
 182         vStartCountingSemaphoreTasks();\r
 183         vStartRecursiveMutexTasks();\r
 184 \r
 185         #if ( configUSE_FPU == 1 )\r
 186                 vStartMathTasks( mainFLOP_PRIORITY );\r
 187                 vStartFlopRegTests();\r
 188         #endif\r
 189 \r
 190         /* Create the tasks defined within this file. */\r
 191         xTaskCreate( prvRegTestTask1, ( signed portCHAR * ) "Regtest1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
 192         xTaskCreate( prvRegTestTask2, ( signed portCHAR * ) "Regtest2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
 193         xTaskCreate( prvErrorChecks, ( signed portCHAR * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );\r
 194 \r
 195         /* The suicide tasks must be started last as they record the number of other\r
 196         tasks that exist within the system.  The value is then used to ensure at run\r
 197         time the number of tasks that exists is within expected bounds. */\r
 198         vCreateSuicidalTasks( mainDEATH_PRIORITY );\r
 199 \r
 200         /* Now start the scheduler.  Following this call the created tasks should\r
 201         be executing. */        \r
 202         vTaskStartScheduler();\r
 203 \r
 204         /* vTaskStartScheduler() will only return if an error occurs while the \r
 205         idle task is being created. */\r
 206         for( ;; );\r
 207 \r
 208         return 0;\r
 209 }\r
 210 /*-----------------------------------------------------------*/\r
 211 \r
 212 static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void )\r
 213 {\r
 214 portBASE_TYPE lReturn = pdPASS;\r
 215 static unsigned portLONG ulLastRegTest1Counter= 0UL, ulLastRegTest2Counter = 0UL;\r
 216 \r
 217         /* The demo tasks maintain a count that increments every cycle of the task\r
 218         provided that the task has never encountered an error.  This function \r
 219         checks the counts maintained by the tasks to ensure they are still being\r
 220         incremented.  A count remaining at the same value between calls therefore\r
 221         indicates that an error has been detected. */\r
 222 \r
 223         if( xAreIntegerMathsTaskStillRunning() != pdTRUE )\r
 224         {\r
 225                 lReturn = pdFAIL;\r
 226         }\r
 227 \r
 228         if( xAreComTestTasksStillRunning() != pdTRUE )\r
 229         {\r
 230                 lReturn = pdFAIL;\r
 231         }\r
 232         \r
 233         if( xAreSemaphoreTasksStillRunning() != pdTRUE )\r
 234         {\r
 235                 lReturn = pdFAIL;\r
 236         }\r
 237         \r
 238         if( xAreBlockingQueuesStillRunning() != pdTRUE )\r
 239         {\r
 240                 lReturn = pdFAIL;\r
 241         }\r
 242         \r
 243         if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )\r
 244         {\r
 245                 lReturn = pdFAIL;\r
 246         }\r
 247         \r
 248         if( xIsCreateTaskStillRunning() != pdTRUE )\r
 249         {\r
 250                 lReturn = pdFAIL;\r
 251         }\r
 252         \r
 253         if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )\r
 254         {\r
 255                 lReturn = pdFAIL;\r
 256         }\r
 257         \r
 258         if( xAreGenericQueueTasksStillRunning() != pdTRUE )\r
 259         {\r
 260                 lReturn = pdFAIL;\r
 261         }\r
 262         \r
 263         if( xAreQueuePeekTasksStillRunning() != pdTRUE )\r
 264         {\r
 265                 lReturn = pdFAIL;\r
 266         }\r
 267 \r
 268         if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )\r
 269         {\r
 270                 lReturn = pdFAIL;\r
 271         }\r
 272 \r
 273         if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )\r
 274         {\r
 275                 lReturn = pdFAIL;\r
 276         }\r
 277 \r
 278         #if ( configUSE_FPU == 1 )\r
 279                 if( xAreMathsTaskStillRunning() != pdTRUE )\r
 280                 {\r
 281                         lReturn = pdFAIL;\r
 282                 }\r
 283 \r
 284                 if( xAreFlopRegisterTestsStillRunning() != pdTRUE )\r
 285                 {\r
 286                         lReturn = pdFAIL;\r
 287                 }\r
 288         #endif\r
 289 \r
 290         /* Have the register test tasks found any errors? */\r
 291         if( xRegTestStatus != pdPASS )\r
 292         {\r
 293                 lReturn = pdFAIL;\r
 294         }\r
 295 \r
 296         /* Are the register test tasks still looping? */\r
 297         if( ulLastRegTest1Counter == ulRegTest1Counter )\r
 298         {\r
 299                 lReturn = pdFAIL;\r
 300         }\r
 301         else\r
 302         {\r
 303                 ulLastRegTest1Counter = ulRegTest1Counter;\r
 304         }\r
 305 \r
 306         if( ulLastRegTest2Counter == ulRegTest2Counter )\r
 307         {\r
 308                 lReturn = pdFAIL;\r
 309         }\r
 310         else\r
 311         {\r
 312                 ulLastRegTest2Counter = ulRegTest2Counter;\r
 313         }\r
 314 \r
 315         return lReturn;\r
 316 }\r
 317 /*-----------------------------------------------------------*/\r
 318 \r
 319 static void prvErrorChecks( void *pvParameters )\r
 320 {\r
 321 portTickType xDelayPeriod = mainNO_ERROR_CHECK_DELAY, xLastExecutionTime;\r
 322 volatile unsigned portBASE_TYPE uxFreeStack;\r
 323 \r
 324         /* Just to remove compiler warning. */\r
 325         ( void ) pvParameters;\r
 326 \r
 327         /* This call is just to demonstrate the use of the function - nothing is\r
 328         done with the value.  You would expect the stack high water mark to be\r
 329         lower (the function to return a larger value) here at function entry than\r
 330         later following calls to other functions. */\r
 331         uxFreeStack = uxTaskGetStackHighWaterMark( NULL );\r
 332 \r
 333         /* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()\r
 334         works correctly. */\r
 335         xLastExecutionTime = xTaskGetTickCount();\r
 336 \r
 337         /* Cycle for ever, delaying then checking all the other tasks are still\r
 338         operating without error. */\r
 339         for( ;; )\r
 340         {\r
 341                 /* Again just for demo purposes - uxFreeStack should have a lower value\r
 342                 here than following the call to uxTaskGetStackHighWaterMark() on the\r
 343                 task entry. */\r
 344                 uxFreeStack = uxTaskGetStackHighWaterMark( NULL );\r
 345 \r
 346                 /* Wait until it is time to check again.  The time we wait here depends\r
 347                 on whether an error has been detected or not.  When an error is \r
 348                 detected the time is shortened resulting in a faster LED flash rate. */\r
 349                 vTaskDelayUntil( &xLastExecutionTime, xDelayPeriod );\r
 350 \r
 351                 /* See if the other tasks are all ok. */\r
 352                 if( prvCheckOtherTasksAreStillRunning() != pdPASS )\r
 353                 {\r
 354                         /* An error occurred in one of the tasks so shorten the delay \r
 355                         period - which has the effect of increasing the frequency of the\r
 356                         LED toggle. */\r
 357                         xDelayPeriod = mainERROR_CHECK_DELAY;\r
 358                 }\r
 359 \r
 360                 /* Flash! */\r
 361                 vParTestToggleLED( mainCHECK_TEST_LED );\r
 362         }\r
 363 }\r
 364 /*-----------------------------------------------------------*/\r
 365 \r
 366 static void prvSetupHardware( void )\r
 367 {\r
 368         XCache_EnableICache( 0x80000000 );\r
 369         XCache_EnableDCache( 0x80000000 );\r
 370 \r
 371         /* Setup the IO port for use with the LED outputs. */\r
 372         vParTestInitialise();\r
 373 }\r
 374 /*-----------------------------------------------------------*/\r
 375 \r
 376 void prvRegTest1Pass( void )\r
 377 {\r
 378         /* Called from the inline assembler - this cannot be static\r
 379         otherwise it can get optimised away. */\r
 380         ulRegTest1Counter++;\r
 381 }\r
 382 /*-----------------------------------------------------------*/\r
 383 \r
 384 void prvRegTest2Pass( void )\r
 385 {\r
 386         /* Called from the inline assembler - this cannot be static\r
 387         otherwise it can get optimised away. */\r
 388         ulRegTest2Counter++;\r
 389 }\r
 390 /*-----------------------------------------------------------*/\r
 391 \r
 392 void prvRegTestFail( void )\r
 393 {\r
 394         /* Called from the inline assembler - this cannot be static\r
 395         otherwise it can get optimised away. */\r
 396         xRegTestStatus = pdFAIL;\r
 397 }\r
 398 /*-----------------------------------------------------------*/\r
 399 \r
 400 static void prvRegTestTask1( void *pvParameters )\r
 401 {\r
 402         /* Just to remove compiler warning. */\r
 403         ( void ) pvParameters;\r
 404 \r
 405         /* The first register test task as described at the top of this file.  The\r
 406         values used in the registers are different to those use in the second \r
 407         register test task.  Also, unlike the second register test task, this task\r
 408         yields between setting the register values and subsequently checking the\r
 409         register values. */\r
 410         asm volatile\r
 411         (\r
 412                 "RegTest1Start:                                 \n\t" \\r
 413                 "                                                               \n\t" \\r
 414                 "       li              0, 301                          \n\t" \\r
 415                 "       mtspr   256, 0  #USPRG0         \n\t" \\r
 416                 "       li              0, 501                          \n\t" \\r
 417                 "       mtspr   8, 0    #LR                     \n\t" \\r
 418                 "       li              0, 4                            \n\t" \\r
 419                 "       mtspr   1, 0    #XER            \n\t" \\r
 420                 "                                                               \n\t" \\r
 421                 "       li              0, 1                            \n\t" \\r
 422                 "       li              2, 2                            \n\t" \\r
 423                 "       li              3, 3                            \n\t" \\r
 424                 "       li              4,      4                               \n\t" \\r
 425                 "       li              5,      5                               \n\t" \\r
 426                 "       li              6,      6                               \n\t" \\r
 427                 "       li              7,      7                               \n\t" \\r
 428                 "       li              8,      8                               \n\t" \\r
 429                 "       li              9,      9                               \n\t" \\r
 430                 "       li              10,     10                              \n\t" \\r
 431                 "       li              11,     11                              \n\t" \\r
 432                 "       li              12,     12                              \n\t" \\r
 433                 "       li              13,     13                              \n\t" \\r
 434                 "       li              14,     14                              \n\t" \\r
 435                 "       li              15,     15                              \n\t" \\r
 436                 "       li              16,     16                              \n\t" \\r
 437                 "       li              17,     17                              \n\t" \\r
 438                 "       li              18,     18                              \n\t" \\r
 439                 "       li              19,     19                              \n\t" \\r
 440                 "       li              20,     20                              \n\t" \\r
 441                 "       li              21,     21                              \n\t" \\r
 442                 "       li              22,     22                              \n\t" \\r
 443                 "       li              23,     23                              \n\t" \\r
 444                 "       li              24,     24                              \n\t" \\r
 445                 "       li              25,     25                              \n\t" \\r
 446                 "       li              26,     26                              \n\t" \\r
 447                 "       li              27,     27                              \n\t" \\r
 448                 "       li              28,     28                              \n\t" \\r
 449                 "       li              29,     29                              \n\t" \\r
 450                 "       li              30,     30                              \n\t" \\r
 451                 "       li              31,     31                              \n\t" \\r
 452                 "                                                               \n\t" \\r
 453                 "       sc                                                      \n\t" \\r
 454                 "       nop                                                     \n\t" \\r
 455                 "                                                               \n\t" \\r
 456                 "       cmpwi   0, 1                            \n\t" \\r
 457                 "       bne     RegTest1Fail                    \n\t" \\r
 458                 "       cmpwi   2, 2                            \n\t" \\r
 459                 "       bne     RegTest1Fail                    \n\t" \\r
 460                 "       cmpwi   3, 3                            \n\t" \\r
 461                 "       bne     RegTest1Fail                    \n\t" \\r
 462                 "       cmpwi   4, 4                            \n\t" \\r
 463                 "       bne     RegTest1Fail                    \n\t" \\r
 464                 "       cmpwi   5, 5                            \n\t" \\r
 465                 "       bne     RegTest1Fail                    \n\t" \\r
 466                 "       cmpwi   6, 6                            \n\t" \\r
 467                 "       bne     RegTest1Fail                    \n\t" \\r
 468                 "       cmpwi   7, 7                            \n\t" \\r
 469                 "       bne     RegTest1Fail                    \n\t" \\r
 470                 "       cmpwi   8, 8                            \n\t" \\r
 471                 "       bne     RegTest1Fail                    \n\t" \\r
 472                 "       cmpwi   9, 9                            \n\t" \\r
 473                 "       bne     RegTest1Fail                    \n\t" \\r
 474                 "       cmpwi   10, 10                          \n\t" \\r
 475                 "       bne     RegTest1Fail                    \n\t" \\r
 476                 "       cmpwi   11, 11                          \n\t" \\r
 477                 "       bne     RegTest1Fail                    \n\t" \\r
 478                 "       cmpwi   12, 12                          \n\t" \\r
 479                 "       bne     RegTest1Fail                    \n\t" \\r
 480                 "       cmpwi   13, 13                          \n\t" \\r
 481                 "       bne     RegTest1Fail                    \n\t" \\r
 482                 "       cmpwi   14, 14                          \n\t" \\r
 483                 "       bne     RegTest1Fail                    \n\t" \\r
 484                 "       cmpwi   15, 15                          \n\t" \\r
 485                 "       bne     RegTest1Fail                    \n\t" \\r
 486                 "       cmpwi   16, 16                          \n\t" \\r
 487                 "       bne     RegTest1Fail                    \n\t" \\r
 488                 "       cmpwi   17, 17                          \n\t" \\r
 489                 "       bne     RegTest1Fail                    \n\t" \\r
 490                 "       cmpwi   18, 18                          \n\t" \\r
 491                 "       bne     RegTest1Fail                    \n\t" \\r
 492                 "       cmpwi   19, 19                          \n\t" \\r
 493                 "       bne     RegTest1Fail                    \n\t" \\r
 494                 "       cmpwi   20, 20                          \n\t" \\r
 495                 "       bne     RegTest1Fail                    \n\t" \\r
 496                 "       cmpwi   21, 21                          \n\t" \\r
 497                 "       bne     RegTest1Fail                    \n\t" \\r
 498                 "       cmpwi   22, 22                          \n\t" \\r
 499                 "       bne     RegTest1Fail                    \n\t" \\r
 500                 "       cmpwi   23, 23                          \n\t" \\r
 501                 "       bne     RegTest1Fail                    \n\t" \\r
 502                 "       cmpwi   24, 24                          \n\t" \\r
 503                 "       bne     RegTest1Fail                    \n\t" \\r
 504                 "       cmpwi   25, 25                          \n\t" \\r
 505                 "       bne     RegTest1Fail                    \n\t" \\r
 506                 "       cmpwi   26, 26                          \n\t" \\r
 507                 "       bne     RegTest1Fail                    \n\t" \\r
 508                 "       cmpwi   27, 27                          \n\t" \\r
 509                 "       bne     RegTest1Fail                    \n\t" \\r
 510                 "       cmpwi   28, 28                          \n\t" \\r
 511                 "       bne     RegTest1Fail                    \n\t" \\r
 512                 "       cmpwi   29, 29                          \n\t" \\r
 513                 "       bne     RegTest1Fail                    \n\t" \\r
 514                 "       cmpwi   30, 30                          \n\t" \\r
 515                 "       bne     RegTest1Fail                    \n\t" \\r
 516                 "       cmpwi   31, 31                          \n\t" \\r
 517                 "       bne     RegTest1Fail                    \n\t" \\r
 518                 "                                                               \n\t" \\r
 519                 "       mfspr   0, 256  #USPRG0         \n\t" \\r
 520                 "       cmpwi   0, 301                          \n\t" \\r
 521                 "       bne     RegTest1Fail                    \n\t" \\r
 522                 "       mfspr   0, 8    #LR                     \n\t" \\r
 523                 "       cmpwi   0, 501                          \n\t" \\r
 524                 "       bne     RegTest1Fail                    \n\t" \\r
 525                 "       mfspr   0, 1    #XER            \n\t" \\r
 526                 "       cmpwi   0, 4                            \n\t" \\r
 527                 "       bne     RegTest1Fail                    \n\t" \\r
 528                 "                                                               \n\t" \\r
 529                 "       bl prvRegTest1Pass                      \n\t" \\r
 530                 "       b RegTest1Start                         \n\t" \\r
 531                 "                                                               \n\t" \\r
 532                 "RegTest1Fail:                                  \n\t" \\r
 533                 "                                                               \n\t" \\r
 534                 "                                                               \n\t" \\r
 535                 "       bl prvRegTestFail                       \n\t" \\r
 536                 "       b RegTest1Start                         \n\t" \\r
 537         );\r
 538 }\r
 539 /*-----------------------------------------------------------*/\r
 540 \r
 541 static void prvRegTestTask2( void *pvParameters )\r
 542 {\r
 543         /* Just to remove compiler warning. */\r
 544         ( void ) pvParameters;\r
 545 \r
 546         /* The second register test task as described at the top of this file.  \r
 547         Note that this task fills the registers with different values to the\r
 548         first register test task. */\r
 549         asm volatile\r
 550         (\r
 551                 "RegTest2Start:                                 \n\t" \\r
 552                 "                                                               \n\t" \\r
 553                 "       li              0, 300                          \n\t" \\r
 554                 "       mtspr   256, 0  #USPRG0         \n\t" \\r
 555                 "       li              0, 500                          \n\t" \\r
 556                 "       mtspr   8, 0    #LR                     \n\t" \\r
 557                 "       li              0, 4                            \n\t" \\r
 558                 "       mtspr   1, 0    #XER            \n\t" \\r
 559                 "                                                               \n\t" \\r
 560                 "       li              0, 11                           \n\t" \\r
 561                 "       li              2, 12                           \n\t" \\r
 562                 "       li              3, 13                           \n\t" \\r
 563                 "       li              4,      14                              \n\t" \\r
 564                 "       li              5,      15                              \n\t" \\r
 565                 "       li              6,      16                              \n\t" \\r
 566                 "       li              7,      17                              \n\t" \\r
 567                 "       li              8,      18                              \n\t" \\r
 568                 "       li              9,      19                              \n\t" \\r
 569                 "       li              10,     110                             \n\t" \\r
 570                 "       li              11,     111                             \n\t" \\r
 571                 "       li              12,     112                             \n\t" \\r
 572                 "       li              13,     113                             \n\t" \\r
 573                 "       li              14,     114                             \n\t" \\r
 574                 "       li              15,     115                             \n\t" \\r
 575                 "       li              16,     116                             \n\t" \\r
 576                 "       li              17,     117                             \n\t" \\r
 577                 "       li              18,     118                             \n\t" \\r
 578                 "       li              19,     119                             \n\t" \\r
 579                 "       li              20,     120                             \n\t" \\r
 580                 "       li              21,     121                             \n\t" \\r
 581                 "       li              22,     122                             \n\t" \\r
 582                 "       li              23,     123                             \n\t" \\r
 583                 "       li              24,     124                             \n\t" \\r
 584                 "       li              25,     125                             \n\t" \\r
 585                 "       li              26,     126                             \n\t" \\r
 586                 "       li              27,     127                             \n\t" \\r
 587                 "       li              28,     128                             \n\t" \\r
 588                 "       li              29,     129                             \n\t" \\r
 589                 "       li              30,     130                             \n\t" \\r
 590                 "       li              31,     131                             \n\t" \\r
 591                 "                                                               \n\t" \\r
 592                 "       cmpwi   0, 11                           \n\t" \\r
 593                 "       bne     RegTest2Fail                    \n\t" \\r
 594                 "       cmpwi   2, 12                           \n\t" \\r
 595                 "       bne     RegTest2Fail                    \n\t" \\r
 596                 "       cmpwi   3, 13                           \n\t" \\r
 597                 "       bne     RegTest2Fail                    \n\t" \\r
 598                 "       cmpwi   4, 14                           \n\t" \\r
 599                 "       bne     RegTest2Fail                    \n\t" \\r
 600                 "       cmpwi   5, 15                           \n\t" \\r
 601                 "       bne     RegTest2Fail                    \n\t" \\r
 602                 "       cmpwi   6, 16                           \n\t" \\r
 603                 "       bne     RegTest2Fail                    \n\t" \\r
 604                 "       cmpwi   7, 17                           \n\t" \\r
 605                 "       bne     RegTest2Fail                    \n\t" \\r
 606                 "       cmpwi   8, 18                           \n\t" \\r
 607                 "       bne     RegTest2Fail                    \n\t" \\r
 608                 "       cmpwi   9, 19                           \n\t" \\r
 609                 "       bne     RegTest2Fail                    \n\t" \\r
 610                 "       cmpwi   10, 110                         \n\t" \\r
 611                 "       bne     RegTest2Fail                    \n\t" \\r
 612                 "       cmpwi   11, 111                         \n\t" \\r
 613                 "       bne     RegTest2Fail                    \n\t" \\r
 614                 "       cmpwi   12, 112                         \n\t" \\r
 615                 "       bne     RegTest2Fail                    \n\t" \\r
 616                 "       cmpwi   13, 113                         \n\t" \\r
 617                 "       bne     RegTest2Fail                    \n\t" \\r
 618                 "       cmpwi   14, 114                         \n\t" \\r
 619                 "       bne     RegTest2Fail                    \n\t" \\r
 620                 "       cmpwi   15, 115                         \n\t" \\r
 621                 "       bne     RegTest2Fail                    \n\t" \\r
 622                 "       cmpwi   16, 116                         \n\t" \\r
 623                 "       bne     RegTest2Fail                    \n\t" \\r
 624                 "       cmpwi   17, 117                         \n\t" \\r
 625                 "       bne     RegTest2Fail                    \n\t" \\r
 626                 "       cmpwi   18, 118                         \n\t" \\r
 627                 "       bne     RegTest2Fail                    \n\t" \\r
 628                 "       cmpwi   19, 119                         \n\t" \\r
 629                 "       bne     RegTest2Fail                    \n\t" \\r
 630                 "       cmpwi   20, 120                         \n\t" \\r
 631                 "       bne     RegTest2Fail                    \n\t" \\r
 632                 "       cmpwi   21, 121                         \n\t" \\r
 633                 "       bne     RegTest2Fail                    \n\t" \\r
 634                 "       cmpwi   22, 122                         \n\t" \\r
 635                 "       bne     RegTest2Fail                    \n\t" \\r
 636                 "       cmpwi   23, 123                         \n\t" \\r
 637                 "       bne     RegTest2Fail                    \n\t" \\r
 638                 "       cmpwi   24, 124                         \n\t" \\r
 639                 "       bne     RegTest2Fail                    \n\t" \\r
 640                 "       cmpwi   25, 125                         \n\t" \\r
 641                 "       bne     RegTest2Fail                    \n\t" \\r
 642                 "       cmpwi   26, 126                         \n\t" \\r
 643                 "       bne     RegTest2Fail                    \n\t" \\r
 644                 "       cmpwi   27, 127                         \n\t" \\r
 645                 "       bne     RegTest2Fail                    \n\t" \\r
 646                 "       cmpwi   28, 128                         \n\t" \\r
 647                 "       bne     RegTest2Fail                    \n\t" \\r
 648                 "       cmpwi   29, 129                         \n\t" \\r
 649                 "       bne     RegTest2Fail                    \n\t" \\r
 650                 "       cmpwi   30, 130                         \n\t" \\r
 651                 "       bne     RegTest2Fail                    \n\t" \\r
 652                 "       cmpwi   31, 131                         \n\t" \\r
 653                 "       bne     RegTest2Fail                    \n\t" \\r
 654                 "                                                               \n\t" \\r
 655                 "       mfspr   0, 256  #USPRG0         \n\t" \\r
 656                 "       cmpwi   0, 300                          \n\t" \\r
 657                 "       bne     RegTest2Fail                    \n\t" \\r
 658                 "       mfspr   0, 8    #LR                     \n\t" \\r
 659                 "       cmpwi   0, 500                          \n\t" \\r
 660                 "       bne     RegTest2Fail                    \n\t" \\r
 661                 "       mfspr   0, 1    #XER            \n\t" \\r
 662                 "       cmpwi   0, 4                            \n\t" \\r
 663                 "       bne     RegTest2Fail                    \n\t" \\r
 664                 "                                                               \n\t" \\r
 665                 "       bl prvRegTest2Pass                      \n\t" \\r
 666                 "       b RegTest2Start                         \n\t" \\r
 667                 "                                                               \n\t" \\r
 668                 "RegTest2Fail:                                  \n\t" \\r
 669                 "                                                               \n\t" \\r
 670                 "                                                               \n\t" \\r
 671                 "       bl prvRegTestFail                       \n\t" \\r
 672                 "       b RegTest2Start                         \n\t" \\r
 673         );\r
 674 }\r
 675 /*-----------------------------------------------------------*/\r
 676 \r
 677 /* This hook function will get called if there is a suspected stack overflow.\r
 678 An overflow can cause the task name to be corrupted, in which case the task\r
 679 handle needs to be used to determine the offending task. */\r
 680 void vApplicationStackOverflowHook( xTaskHandle xTask, signed portCHAR *pcTaskName );\r
 681 void vApplicationStackOverflowHook( xTaskHandle xTask, signed portCHAR *pcTaskName )\r
 682 {\r
 683 /* To prevent the optimiser removing the variables. */\r
 684 volatile xTaskHandle xTaskIn = xTask;\r
 685 volatile signed portCHAR *pcTaskNameIn = pcTaskName;\r
 686 \r
 687         /* Remove compiler warnings. */\r
 688         ( void ) xTaskIn;\r
 689         ( void ) pcTaskNameIn;\r
 690 \r
 691         /* The following three calls are simply to stop compiler warnings about the\r
 692         functions not being used - they are called from the inline assembly. */\r
 693         prvRegTest1Pass();\r
 694         prvRegTest2Pass();\r
 695         prvRegTestFail();\r
 696 \r
 697         for( ;; );\r
 698 }\r
 699 \r
 700 \r
 701 \r