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

   1 /*\r
   2     FreeRTOS V8.2.0rc1 - Copyright (C) 2014 Real Time Engineers Ltd.\r
   3     All rights reserved\r
   4 \r
   5     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   6 \r
   7     This file is part of the FreeRTOS distribution.\r
   8 \r
   9     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  10     the terms of the GNU General Public License (version 2) as published by the\r
  11     Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
  12 \r
  13     >>!   NOTE: The modification to the GPL is included to allow you to     !<<\r
  14     >>!   distribute a combined work that includes FreeRTOS without being   !<<\r
  15     >>!   obliged to provide the source code for proprietary components     !<<\r
  16     >>!   outside of the FreeRTOS kernel.                                   !<<\r
  17 \r
  18     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  19     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  20     FOR A PARTICULAR PURPOSE.  Full license text is available on the following\r
  21     link: http://www.freertos.org/a00114.html\r
  22 \r
  23     1 tab == 4 spaces!\r
  24 \r
  25     ***************************************************************************\r
  26      *                                                                       *\r
  27      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  28      *    not run, what could be wrong?".  Have you defined configASSERT()?  *\r
  29      *                                                                       *\r
  30      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  31      *                                                                       *\r
  32     ***************************************************************************\r
  33 \r
  34     ***************************************************************************\r
  35      *                                                                       *\r
  36      *    FreeRTOS provides completely free yet professionally developed,    *\r
  37      *    robust, strictly quality controlled, supported, and cross          *\r
  38      *    platform software that is more than just the market leader, it     *\r
  39      *    is the industry's de facto standard.                               *\r
  40      *                                                                       *\r
  41      *    Help yourself get started quickly while simultaneously helping     *\r
  42      *    to support the FreeRTOS project by purchasing a FreeRTOS           *\r
  43      *    tutorial book, reference manual, or both:                          *\r
  44      *    http://www.FreeRTOS.org/Documentation                              *\r
  45      *                                                                       *\r
  46     ***************************************************************************\r
  47 \r
  48     ***************************************************************************\r
  49      *                                                                       *\r
  50      *   Investing in training allows your team to be as productive as       *\r
  51      *   possible as early as possible, lowering your overall development    *\r
  52      *   cost, and enabling you to bring a more robust product to market     *\r
  53      *   earlier than would otherwise be possible.  Richard Barry is both    *\r
  54      *   the architect and key author of FreeRTOS, and so also the world's   *\r
  55      *   leading authority on what is the world's most popular real time     *\r
  56      *   kernel for deeply embedded MCU designs.  Obtaining your training    *\r
  57      *   from Richard ensures your team will gain directly from his in-depth *\r
  58      *   product knowledge and years of usage experience.  Contact Real Time *\r
  59      *   Engineers Ltd to enquire about the FreeRTOS Masterclass, presented  *\r
  60      *   by Richard Barry:  http://www.FreeRTOS.org/contact\r
  61      *                                                                       *\r
  62     ***************************************************************************\r
  63 \r
  64     ***************************************************************************\r
  65      *                                                                       *\r
  66      *    You are receiving this top quality software for free.  Please play *\r
  67      *    fair and reciprocate by reporting any suspected issues and         *\r
  68      *    participating in the community forum:                              *\r
  69      *    http://www.FreeRTOS.org/support                                    *\r
  70      *                                                                       *\r
  71      *    Thank you!                                                         *\r
  72      *                                                                       *\r
  73     ***************************************************************************\r
  74 \r
  75     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
  76     license and Real Time Engineers Ltd. contact details.\r
  77 \r
  78     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  79     including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
  80     compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
  81 \r
  82     http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.\r
  83     Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.\r
  84 \r
  85     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
  86     Integrity Systems ltd. to sell under the OpenRTOS brand.  Low cost OpenRTOS\r
  87     licenses offer ticketed support, indemnification and commercial middleware.\r
  88 \r
  89     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
  90     engineered and independently SIL3 certified version for use in safety and\r
  91     mission critical applications that require provable dependability.\r
  92 \r
  93     1 tab == 4 spaces!\r
  94 */\r
  95 \r
  96 /*\r
  97  * Creates all the demo application tasks, then starts the scheduler.  The WEB\r
  98  * documentation provides more details of the demo application tasks.\r
  99  * \r
 100  * In addition to the standard demo tasks, the follow demo specific tasks are\r
 101  * create:\r
 102  *\r
 103  * The "Check" task.  This only executes every three seconds but has the highest \r
 104  * priority so is guaranteed to get processor time.  Its main function is to \r
 105  * check that all the other tasks are still operational.  Most tasks maintain \r
 106  * a unique count that is incremented each time the task successfully completes \r
 107  * its function.  Should any error occur within such a task the count is \r
 108  * permanently halted.  The check task inspects the count of each task to ensure \r
 109  * it has changed since the last time the check task executed.  If all the count \r
 110  * variables have changed all the tasks are still executing error free, and the \r
 111  * check task toggles the onboard LED.  Should any task contain an error at any time \r
 112  * the LED toggle rate will change from 3 seconds to 500ms.\r
 113  *\r
 114  * The "Register Check" tasks.  These tasks fill the CPU registers with known\r
 115  * values, then check that each register still contains the expected value, the\r
 116  * discovery of an unexpected value being indicative of an error in the RTOS\r
 117  * context switch mechanism.  The register check tasks operate at low priority\r
 118  * so are switched in and out frequently.\r
 119  *\r
 120  */\r
 121 \r
 122 /* Scheduler includes. */\r
 123 #include "FreeRTOS.h"\r
 124 #include "task.h"\r
 125 \r
 126 /* Xilinx library includes. */\r
 127 #include "xcache_l.h"\r
 128 #include "xintc.h"\r
 129 \r
 130 /* Demo application includes. */\r
 131 #include "flash.h"\r
 132 #include "integer.h"\r
 133 #include "comtest2.h"\r
 134 #include "semtest.h"\r
 135 #include "BlockQ.h"\r
 136 #include "dynamic.h"\r
 137 #include "GenQTest.h"\r
 138 #include "QPeek.h"\r
 139 #include "blocktim.h"\r
 140 #include "death.h"\r
 141 #include "partest.h"\r
 142 #include "countsem.h"\r
 143 #include "recmutex.h"\r
 144 #include "flop.h"\r
 145 #include "flop-reg-test.h"\r
 146 \r
 147 /* Priorities assigned to the demo tasks. */\r
 148 #define mainCHECK_TASK_PRIORITY                 ( tskIDLE_PRIORITY + 4 )\r
 149 #define mainSEM_TEST_PRIORITY                   ( tskIDLE_PRIORITY + 2 )\r
 150 #define mainCOM_TEST_PRIORITY                   ( tskIDLE_PRIORITY + 1 )\r
 151 #define mainQUEUE_BLOCK_PRIORITY                ( tskIDLE_PRIORITY + 1 )\r
 152 #define mainDEATH_PRIORITY                              ( tskIDLE_PRIORITY + 1 )\r
 153 #define mainLED_TASK_PRIORITY                   ( tskIDLE_PRIORITY + 1 )\r
 154 #define mainGENERIC_QUEUE_PRIORITY              ( tskIDLE_PRIORITY )\r
 155 #define mainQUEUE_POLL_PRIORITY                 ( tskIDLE_PRIORITY + 1 )\r
 156 #define mainFLOP_PRIORITY                               ( tskIDLE_PRIORITY )\r
 157 \r
 158 /* The first LED used by the COM test and check tasks respectively. */\r
 159 #define mainCOM_TEST_LED                                ( 4 )\r
 160 #define mainCHECK_TEST_LED                              ( 3 )\r
 161 \r
 162 /* The baud rate used by the comtest tasks is set by the hardware, so the\r
 163 baud rate parameters passed into the comtest initialisation has no effect. */\r
 164 #define mainBAUD_SET_IN_HARDWARE                ( 0 )\r
 165 \r
 166 /* Delay periods used by the check task.  If no errors have been found then\r
 167 the check LED will toggle every mainNO_ERROR_CHECK_DELAY milliseconds.  If an\r
 168 error has been found at any time then the toggle rate will increase to \r
 169 mainERROR_CHECK_DELAY milliseconds. */\r
 170 #define mainNO_ERROR_CHECK_DELAY                ( ( TickType_t ) 3000 / portTICK_PERIOD_MS  )\r
 171 #define mainERROR_CHECK_DELAY                   ( ( TickType_t ) 500 / portTICK_PERIOD_MS  )\r
 172 \r
 173 \r
 174 /* \r
 175  * The tasks defined within this file - described within the comments at the\r
 176  * head of this page. \r
 177  */\r
 178 static void prvRegTestTask1( void *pvParameters );\r
 179 static void prvRegTestTask2( void *pvParameters );\r
 180 static void prvErrorChecks( void *pvParameters );\r
 181 \r
 182 /*\r
 183  * Called by the 'check' task to inspect all the standard demo tasks within\r
 184  * the system, as described within the comments at the head of this page.\r
 185  */\r
 186 static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void );\r
 187 \r
 188 /*\r
 189  * Perform any hardware initialisation required by the demo application.\r
 190  */\r
 191 static void prvSetupHardware( void );\r
 192 \r
 193 /*-----------------------------------------------------------*/\r
 194 \r
 195 /* xRegTestStatus will get set to pdFAIL by the regtest tasks if they\r
 196 discover an unexpected value. */\r
 197 static volatile unsigned portBASE_TYPE xRegTestStatus = pdPASS;\r
 198 \r
 199 /* Counters used to ensure the regtest tasks are still running. */\r
 200 static volatile unsigned long ulRegTest1Counter = 0UL, ulRegTest2Counter = 0UL;\r
 201 \r
 202 /*-----------------------------------------------------------*/\r
 203 \r
 204 int main( void )\r
 205 {\r
 206 \r
 207         /* Must be called prior to installing any interrupt handlers! */\r
 208         vPortSetupInterruptController();\r
 209 \r
 210         /* In this case prvSetupHardware() just enables the caches and and\r
 211         configures the IO ports for the LED outputs. */\r
 212         prvSetupHardware();\r
 213 \r
 214         /* Start the standard demo application tasks.  Note that the baud rate used\r
 215         by the comtest tasks is set by the hardware, so the baud rate parameter\r
 216         passed has no effect. */\r
 217         vStartLEDFlashTasks( mainLED_TASK_PRIORITY );   \r
 218         vStartIntegerMathTasks( tskIDLE_PRIORITY );\r
 219         vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainBAUD_SET_IN_HARDWARE, mainCOM_TEST_LED );\r
 220         vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );\r
 221         vStartBlockingQueueTasks ( mainQUEUE_BLOCK_PRIORITY );  \r
 222         vStartDynamicPriorityTasks();   \r
 223         vStartGenericQueueTasks( mainGENERIC_QUEUE_PRIORITY );\r
 224         vStartQueuePeekTasks();\r
 225         vCreateBlockTimeTasks();\r
 226         vStartCountingSemaphoreTasks();\r
 227         vStartRecursiveMutexTasks();\r
 228 \r
 229         #if ( configUSE_FPU == 1 )\r
 230                 vStartMathTasks( mainFLOP_PRIORITY );\r
 231                 vStartFlopRegTests();\r
 232         #endif\r
 233 \r
 234         /* Create the tasks defined within this file. */\r
 235         xTaskCreate( prvRegTestTask1, "Regtest1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
 236         xTaskCreate( prvRegTestTask2, "Regtest2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
 237         xTaskCreate( prvErrorChecks, "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );\r
 238 \r
 239         /* The suicide tasks must be started last as they record the number of other\r
 240         tasks that exist within the system.  The value is then used to ensure at run\r
 241         time the number of tasks that exists is within expected bounds. */\r
 242         vCreateSuicidalTasks( mainDEATH_PRIORITY );\r
 243 \r
 244         /* Now start the scheduler.  Following this call the created tasks should\r
 245         be executing. */        \r
 246         vTaskStartScheduler();\r
 247 \r
 248         /* vTaskStartScheduler() will only return if an error occurs while the \r
 249         idle task is being created. */\r
 250         for( ;; );\r
 251 \r
 252         return 0;\r
 253 }\r
 254 /*-----------------------------------------------------------*/\r
 255 \r
 256 static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void )\r
 257 {\r
 258 portBASE_TYPE lReturn = pdPASS;\r
 259 static unsigned long ulLastRegTest1Counter= 0UL, ulLastRegTest2Counter = 0UL;\r
 260 \r
 261         /* The demo tasks maintain a count that increments every cycle of the task\r
 262         provided that the task has never encountered an error.  This function \r
 263         checks the counts maintained by the tasks to ensure they are still being\r
 264         incremented.  A count remaining at the same value between calls therefore\r
 265         indicates that an error has been detected. */\r
 266 \r
 267         if( xAreIntegerMathsTaskStillRunning() != pdTRUE )\r
 268         {\r
 269                 lReturn = pdFAIL;\r
 270         }\r
 271 \r
 272         if( xAreComTestTasksStillRunning() != pdTRUE )\r
 273         {\r
 274                 lReturn = pdFAIL;\r
 275         }\r
 276         \r
 277         if( xAreSemaphoreTasksStillRunning() != pdTRUE )\r
 278         {\r
 279                 lReturn = pdFAIL;\r
 280         }\r
 281         \r
 282         if( xAreBlockingQueuesStillRunning() != pdTRUE )\r
 283         {\r
 284                 lReturn = pdFAIL;\r
 285         }\r
 286         \r
 287         if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )\r
 288         {\r
 289                 lReturn = pdFAIL;\r
 290         }\r
 291         \r
 292         if( xIsCreateTaskStillRunning() != pdTRUE )\r
 293         {\r
 294                 lReturn = pdFAIL;\r
 295         }\r
 296         \r
 297         if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )\r
 298         {\r
 299                 lReturn = pdFAIL;\r
 300         }\r
 301         \r
 302         if( xAreGenericQueueTasksStillRunning() != pdTRUE )\r
 303         {\r
 304                 lReturn = pdFAIL;\r
 305         }\r
 306         \r
 307         if( xAreQueuePeekTasksStillRunning() != pdTRUE )\r
 308         {\r
 309                 lReturn = pdFAIL;\r
 310         }\r
 311 \r
 312         if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )\r
 313         {\r
 314                 lReturn = pdFAIL;\r
 315         }\r
 316 \r
 317         if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )\r
 318         {\r
 319                 lReturn = pdFAIL;\r
 320         }\r
 321 \r
 322         #if ( configUSE_FPU == 1 )\r
 323                 if( xAreMathsTaskStillRunning() != pdTRUE )\r
 324                 {\r
 325                         lReturn = pdFAIL;\r
 326                 }\r
 327 \r
 328                 if( xAreFlopRegisterTestsStillRunning() != pdTRUE )\r
 329                 {\r
 330                         lReturn = pdFAIL;\r
 331                 }\r
 332         #endif\r
 333 \r
 334         /* Have the register test tasks found any errors? */\r
 335         if( xRegTestStatus != pdPASS )\r
 336         {\r
 337                 lReturn = pdFAIL;\r
 338         }\r
 339 \r
 340         /* Are the register test tasks still looping? */\r
 341         if( ulLastRegTest1Counter == ulRegTest1Counter )\r
 342         {\r
 343                 lReturn = pdFAIL;\r
 344         }\r
 345         else\r
 346         {\r
 347                 ulLastRegTest1Counter = ulRegTest1Counter;\r
 348         }\r
 349 \r
 350         if( ulLastRegTest2Counter == ulRegTest2Counter )\r
 351         {\r
 352                 lReturn = pdFAIL;\r
 353         }\r
 354         else\r
 355         {\r
 356                 ulLastRegTest2Counter = ulRegTest2Counter;\r
 357         }\r
 358 \r
 359         return lReturn;\r
 360 }\r
 361 /*-----------------------------------------------------------*/\r
 362 \r
 363 static void prvErrorChecks( void *pvParameters )\r
 364 {\r
 365 TickType_t xDelayPeriod = mainNO_ERROR_CHECK_DELAY, xLastExecutionTime;\r
 366 volatile unsigned portBASE_TYPE uxFreeStack;\r
 367 \r
 368         /* Just to remove compiler warning. */\r
 369         ( void ) pvParameters;\r
 370 \r
 371         /* This call is just to demonstrate the use of the function - nothing is\r
 372         done with the value.  You would expect the stack high water mark to be\r
 373         lower (the function to return a larger value) here at function entry than\r
 374         later following calls to other functions. */\r
 375         uxFreeStack = uxTaskGetStackHighWaterMark( NULL );\r
 376 \r
 377         /* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()\r
 378         works correctly. */\r
 379         xLastExecutionTime = xTaskGetTickCount();\r
 380 \r
 381         /* Cycle for ever, delaying then checking all the other tasks are still\r
 382         operating without error. */\r
 383         for( ;; )\r
 384         {\r
 385                 /* Again just for demo purposes - uxFreeStack should have a lower value\r
 386                 here than following the call to uxTaskGetStackHighWaterMark() on the\r
 387                 task entry. */\r
 388                 uxFreeStack = uxTaskGetStackHighWaterMark( NULL );\r
 389 \r
 390                 /* Wait until it is time to check again.  The time we wait here depends\r
 391                 on whether an error has been detected or not.  When an error is \r
 392                 detected the time is shortened resulting in a faster LED flash rate. */\r
 393                 vTaskDelayUntil( &xLastExecutionTime, xDelayPeriod );\r
 394 \r
 395                 /* See if the other tasks are all ok. */\r
 396                 if( prvCheckOtherTasksAreStillRunning() != pdPASS )\r
 397                 {\r
 398                         /* An error occurred in one of the tasks so shorten the delay \r
 399                         period - which has the effect of increasing the frequency of the\r
 400                         LED toggle. */\r
 401                         xDelayPeriod = mainERROR_CHECK_DELAY;\r
 402                 }\r
 403 \r
 404                 /* Flash! */\r
 405                 vParTestToggleLED( mainCHECK_TEST_LED );\r
 406         }\r
 407 }\r
 408 /*-----------------------------------------------------------*/\r
 409 \r
 410 static void prvSetupHardware( void )\r
 411 {\r
 412         XCache_EnableICache( 0x80000000 );\r
 413         XCache_EnableDCache( 0x80000000 );\r
 414 \r
 415         /* Setup the IO port for use with the LED outputs. */\r
 416         vParTestInitialise();\r
 417 }\r
 418 /*-----------------------------------------------------------*/\r
 419 \r
 420 void prvRegTest1Pass( void )\r
 421 {\r
 422         /* Called from the inline assembler - this cannot be static\r
 423         otherwise it can get optimised away. */\r
 424         ulRegTest1Counter++;\r
 425 }\r
 426 /*-----------------------------------------------------------*/\r
 427 \r
 428 void prvRegTest2Pass( void )\r
 429 {\r
 430         /* Called from the inline assembler - this cannot be static\r
 431         otherwise it can get optimised away. */\r
 432         ulRegTest2Counter++;\r
 433 }\r
 434 /*-----------------------------------------------------------*/\r
 435 \r
 436 void prvRegTestFail( void )\r
 437 {\r
 438         /* Called from the inline assembler - this cannot be static\r
 439         otherwise it can get optimised away. */\r
 440         xRegTestStatus = pdFAIL;\r
 441 }\r
 442 /*-----------------------------------------------------------*/\r
 443 \r
 444 static void prvRegTestTask1( void *pvParameters )\r
 445 {\r
 446         /* Just to remove compiler warning. */\r
 447         ( void ) pvParameters;\r
 448 \r
 449         /* The first register test task as described at the top of this file.  The\r
 450         values used in the registers are different to those use in the second \r
 451         register test task.  Also, unlike the second register test task, this task\r
 452         yields between setting the register values and subsequently checking the\r
 453         register values. */\r
 454         asm volatile\r
 455         (\r
 456                 "RegTest1Start:                                 \n\t" \\r
 457                 "                                                               \n\t" \\r
 458                 "       li              0, 301                          \n\t" \\r
 459                 "       mtspr   256, 0  #USPRG0         \n\t" \\r
 460                 "       li              0, 501                          \n\t" \\r
 461                 "       mtspr   8, 0    #LR                     \n\t" \\r
 462                 "       li              0, 4                            \n\t" \\r
 463                 "       mtspr   1, 0    #XER            \n\t" \\r
 464                 "                                                               \n\t" \\r
 465                 "       li              0, 1                            \n\t" \\r
 466                 "       li              2, 2                            \n\t" \\r
 467                 "       li              3, 3                            \n\t" \\r
 468                 "       li              4,      4                               \n\t" \\r
 469                 "       li              5,      5                               \n\t" \\r
 470                 "       li              6,      6                               \n\t" \\r
 471                 "       li              7,      7                               \n\t" \\r
 472                 "       li              8,      8                               \n\t" \\r
 473                 "       li              9,      9                               \n\t" \\r
 474                 "       li              10,     10                              \n\t" \\r
 475                 "       li              11,     11                              \n\t" \\r
 476                 "       li              12,     12                              \n\t" \\r
 477                 "       li              13,     13                              \n\t" \\r
 478                 "       li              14,     14                              \n\t" \\r
 479                 "       li              15,     15                              \n\t" \\r
 480                 "       li              16,     16                              \n\t" \\r
 481                 "       li              17,     17                              \n\t" \\r
 482                 "       li              18,     18                              \n\t" \\r
 483                 "       li              19,     19                              \n\t" \\r
 484                 "       li              20,     20                              \n\t" \\r
 485                 "       li              21,     21                              \n\t" \\r
 486                 "       li              22,     22                              \n\t" \\r
 487                 "       li              23,     23                              \n\t" \\r
 488                 "       li              24,     24                              \n\t" \\r
 489                 "       li              25,     25                              \n\t" \\r
 490                 "       li              26,     26                              \n\t" \\r
 491                 "       li              27,     27                              \n\t" \\r
 492                 "       li              28,     28                              \n\t" \\r
 493                 "       li              29,     29                              \n\t" \\r
 494                 "       li              30,     30                              \n\t" \\r
 495                 "       li              31,     31                              \n\t" \\r
 496                 "                                                               \n\t" \\r
 497                 "       sc                                                      \n\t" \\r
 498                 "       nop                                                     \n\t" \\r
 499                 "                                                               \n\t" \\r
 500                 "       cmpwi   0, 1                            \n\t" \\r
 501                 "       bne     RegTest1Fail                    \n\t" \\r
 502                 "       cmpwi   2, 2                            \n\t" \\r
 503                 "       bne     RegTest1Fail                    \n\t" \\r
 504                 "       cmpwi   3, 3                            \n\t" \\r
 505                 "       bne     RegTest1Fail                    \n\t" \\r
 506                 "       cmpwi   4, 4                            \n\t" \\r
 507                 "       bne     RegTest1Fail                    \n\t" \\r
 508                 "       cmpwi   5, 5                            \n\t" \\r
 509                 "       bne     RegTest1Fail                    \n\t" \\r
 510                 "       cmpwi   6, 6                            \n\t" \\r
 511                 "       bne     RegTest1Fail                    \n\t" \\r
 512                 "       cmpwi   7, 7                            \n\t" \\r
 513                 "       bne     RegTest1Fail                    \n\t" \\r
 514                 "       cmpwi   8, 8                            \n\t" \\r
 515                 "       bne     RegTest1Fail                    \n\t" \\r
 516                 "       cmpwi   9, 9                            \n\t" \\r
 517                 "       bne     RegTest1Fail                    \n\t" \\r
 518                 "       cmpwi   10, 10                          \n\t" \\r
 519                 "       bne     RegTest1Fail                    \n\t" \\r
 520                 "       cmpwi   11, 11                          \n\t" \\r
 521                 "       bne     RegTest1Fail                    \n\t" \\r
 522                 "       cmpwi   12, 12                          \n\t" \\r
 523                 "       bne     RegTest1Fail                    \n\t" \\r
 524                 "       cmpwi   13, 13                          \n\t" \\r
 525                 "       bne     RegTest1Fail                    \n\t" \\r
 526                 "       cmpwi   14, 14                          \n\t" \\r
 527                 "       bne     RegTest1Fail                    \n\t" \\r
 528                 "       cmpwi   15, 15                          \n\t" \\r
 529                 "       bne     RegTest1Fail                    \n\t" \\r
 530                 "       cmpwi   16, 16                          \n\t" \\r
 531                 "       bne     RegTest1Fail                    \n\t" \\r
 532                 "       cmpwi   17, 17                          \n\t" \\r
 533                 "       bne     RegTest1Fail                    \n\t" \\r
 534                 "       cmpwi   18, 18                          \n\t" \\r
 535                 "       bne     RegTest1Fail                    \n\t" \\r
 536                 "       cmpwi   19, 19                          \n\t" \\r
 537                 "       bne     RegTest1Fail                    \n\t" \\r
 538                 "       cmpwi   20, 20                          \n\t" \\r
 539                 "       bne     RegTest1Fail                    \n\t" \\r
 540                 "       cmpwi   21, 21                          \n\t" \\r
 541                 "       bne     RegTest1Fail                    \n\t" \\r
 542                 "       cmpwi   22, 22                          \n\t" \\r
 543                 "       bne     RegTest1Fail                    \n\t" \\r
 544                 "       cmpwi   23, 23                          \n\t" \\r
 545                 "       bne     RegTest1Fail                    \n\t" \\r
 546                 "       cmpwi   24, 24                          \n\t" \\r
 547                 "       bne     RegTest1Fail                    \n\t" \\r
 548                 "       cmpwi   25, 25                          \n\t" \\r
 549                 "       bne     RegTest1Fail                    \n\t" \\r
 550                 "       cmpwi   26, 26                          \n\t" \\r
 551                 "       bne     RegTest1Fail                    \n\t" \\r
 552                 "       cmpwi   27, 27                          \n\t" \\r
 553                 "       bne     RegTest1Fail                    \n\t" \\r
 554                 "       cmpwi   28, 28                          \n\t" \\r
 555                 "       bne     RegTest1Fail                    \n\t" \\r
 556                 "       cmpwi   29, 29                          \n\t" \\r
 557                 "       bne     RegTest1Fail                    \n\t" \\r
 558                 "       cmpwi   30, 30                          \n\t" \\r
 559                 "       bne     RegTest1Fail                    \n\t" \\r
 560                 "       cmpwi   31, 31                          \n\t" \\r
 561                 "       bne     RegTest1Fail                    \n\t" \\r
 562                 "                                                               \n\t" \\r
 563                 "       mfspr   0, 256  #USPRG0         \n\t" \\r
 564                 "       cmpwi   0, 301                          \n\t" \\r
 565                 "       bne     RegTest1Fail                    \n\t" \\r
 566                 "       mfspr   0, 8    #LR                     \n\t" \\r
 567                 "       cmpwi   0, 501                          \n\t" \\r
 568                 "       bne     RegTest1Fail                    \n\t" \\r
 569                 "       mfspr   0, 1    #XER            \n\t" \\r
 570                 "       cmpwi   0, 4                            \n\t" \\r
 571                 "       bne     RegTest1Fail                    \n\t" \\r
 572                 "                                                               \n\t" \\r
 573                 "       bl prvRegTest1Pass                      \n\t" \\r
 574                 "       b RegTest1Start                         \n\t" \\r
 575                 "                                                               \n\t" \\r
 576                 "RegTest1Fail:                                  \n\t" \\r
 577                 "                                                               \n\t" \\r
 578                 "                                                               \n\t" \\r
 579                 "       bl prvRegTestFail                       \n\t" \\r
 580                 "       b RegTest1Start                         \n\t" \\r
 581         );\r
 582 }\r
 583 /*-----------------------------------------------------------*/\r
 584 \r
 585 static void prvRegTestTask2( void *pvParameters )\r
 586 {\r
 587         /* Just to remove compiler warning. */\r
 588         ( void ) pvParameters;\r
 589 \r
 590         /* The second register test task as described at the top of this file.  \r
 591         Note that this task fills the registers with different values to the\r
 592         first register test task. */\r
 593         asm volatile\r
 594         (\r
 595                 "RegTest2Start:                                 \n\t" \\r
 596                 "                                                               \n\t" \\r
 597                 "       li              0, 300                          \n\t" \\r
 598                 "       mtspr   256, 0  #USPRG0         \n\t" \\r
 599                 "       li              0, 500                          \n\t" \\r
 600                 "       mtspr   8, 0    #LR                     \n\t" \\r
 601                 "       li              0, 4                            \n\t" \\r
 602                 "       mtspr   1, 0    #XER            \n\t" \\r
 603                 "                                                               \n\t" \\r
 604                 "       li              0, 11                           \n\t" \\r
 605                 "       li              2, 12                           \n\t" \\r
 606                 "       li              3, 13                           \n\t" \\r
 607                 "       li              4,      14                              \n\t" \\r
 608                 "       li              5,      15                              \n\t" \\r
 609                 "       li              6,      16                              \n\t" \\r
 610                 "       li              7,      17                              \n\t" \\r
 611                 "       li              8,      18                              \n\t" \\r
 612                 "       li              9,      19                              \n\t" \\r
 613                 "       li              10,     110                             \n\t" \\r
 614                 "       li              11,     111                             \n\t" \\r
 615                 "       li              12,     112                             \n\t" \\r
 616                 "       li              13,     113                             \n\t" \\r
 617                 "       li              14,     114                             \n\t" \\r
 618                 "       li              15,     115                             \n\t" \\r
 619                 "       li              16,     116                             \n\t" \\r
 620                 "       li              17,     117                             \n\t" \\r
 621                 "       li              18,     118                             \n\t" \\r
 622                 "       li              19,     119                             \n\t" \\r
 623                 "       li              20,     120                             \n\t" \\r
 624                 "       li              21,     121                             \n\t" \\r
 625                 "       li              22,     122                             \n\t" \\r
 626                 "       li              23,     123                             \n\t" \\r
 627                 "       li              24,     124                             \n\t" \\r
 628                 "       li              25,     125                             \n\t" \\r
 629                 "       li              26,     126                             \n\t" \\r
 630                 "       li              27,     127                             \n\t" \\r
 631                 "       li              28,     128                             \n\t" \\r
 632                 "       li              29,     129                             \n\t" \\r
 633                 "       li              30,     130                             \n\t" \\r
 634                 "       li              31,     131                             \n\t" \\r
 635                 "                                                               \n\t" \\r
 636                 "       cmpwi   0, 11                           \n\t" \\r
 637                 "       bne     RegTest2Fail                    \n\t" \\r
 638                 "       cmpwi   2, 12                           \n\t" \\r
 639                 "       bne     RegTest2Fail                    \n\t" \\r
 640                 "       cmpwi   3, 13                           \n\t" \\r
 641                 "       bne     RegTest2Fail                    \n\t" \\r
 642                 "       cmpwi   4, 14                           \n\t" \\r
 643                 "       bne     RegTest2Fail                    \n\t" \\r
 644                 "       cmpwi   5, 15                           \n\t" \\r
 645                 "       bne     RegTest2Fail                    \n\t" \\r
 646                 "       cmpwi   6, 16                           \n\t" \\r
 647                 "       bne     RegTest2Fail                    \n\t" \\r
 648                 "       cmpwi   7, 17                           \n\t" \\r
 649                 "       bne     RegTest2Fail                    \n\t" \\r
 650                 "       cmpwi   8, 18                           \n\t" \\r
 651                 "       bne     RegTest2Fail                    \n\t" \\r
 652                 "       cmpwi   9, 19                           \n\t" \\r
 653                 "       bne     RegTest2Fail                    \n\t" \\r
 654                 "       cmpwi   10, 110                         \n\t" \\r
 655                 "       bne     RegTest2Fail                    \n\t" \\r
 656                 "       cmpwi   11, 111                         \n\t" \\r
 657                 "       bne     RegTest2Fail                    \n\t" \\r
 658                 "       cmpwi   12, 112                         \n\t" \\r
 659                 "       bne     RegTest2Fail                    \n\t" \\r
 660                 "       cmpwi   13, 113                         \n\t" \\r
 661                 "       bne     RegTest2Fail                    \n\t" \\r
 662                 "       cmpwi   14, 114                         \n\t" \\r
 663                 "       bne     RegTest2Fail                    \n\t" \\r
 664                 "       cmpwi   15, 115                         \n\t" \\r
 665                 "       bne     RegTest2Fail                    \n\t" \\r
 666                 "       cmpwi   16, 116                         \n\t" \\r
 667                 "       bne     RegTest2Fail                    \n\t" \\r
 668                 "       cmpwi   17, 117                         \n\t" \\r
 669                 "       bne     RegTest2Fail                    \n\t" \\r
 670                 "       cmpwi   18, 118                         \n\t" \\r
 671                 "       bne     RegTest2Fail                    \n\t" \\r
 672                 "       cmpwi   19, 119                         \n\t" \\r
 673                 "       bne     RegTest2Fail                    \n\t" \\r
 674                 "       cmpwi   20, 120                         \n\t" \\r
 675                 "       bne     RegTest2Fail                    \n\t" \\r
 676                 "       cmpwi   21, 121                         \n\t" \\r
 677                 "       bne     RegTest2Fail                    \n\t" \\r
 678                 "       cmpwi   22, 122                         \n\t" \\r
 679                 "       bne     RegTest2Fail                    \n\t" \\r
 680                 "       cmpwi   23, 123                         \n\t" \\r
 681                 "       bne     RegTest2Fail                    \n\t" \\r
 682                 "       cmpwi   24, 124                         \n\t" \\r
 683                 "       bne     RegTest2Fail                    \n\t" \\r
 684                 "       cmpwi   25, 125                         \n\t" \\r
 685                 "       bne     RegTest2Fail                    \n\t" \\r
 686                 "       cmpwi   26, 126                         \n\t" \\r
 687                 "       bne     RegTest2Fail                    \n\t" \\r
 688                 "       cmpwi   27, 127                         \n\t" \\r
 689                 "       bne     RegTest2Fail                    \n\t" \\r
 690                 "       cmpwi   28, 128                         \n\t" \\r
 691                 "       bne     RegTest2Fail                    \n\t" \\r
 692                 "       cmpwi   29, 129                         \n\t" \\r
 693                 "       bne     RegTest2Fail                    \n\t" \\r
 694                 "       cmpwi   30, 130                         \n\t" \\r
 695                 "       bne     RegTest2Fail                    \n\t" \\r
 696                 "       cmpwi   31, 131                         \n\t" \\r
 697                 "       bne     RegTest2Fail                    \n\t" \\r
 698                 "                                                               \n\t" \\r
 699                 "       mfspr   0, 256  #USPRG0         \n\t" \\r
 700                 "       cmpwi   0, 300                          \n\t" \\r
 701                 "       bne     RegTest2Fail                    \n\t" \\r
 702                 "       mfspr   0, 8    #LR                     \n\t" \\r
 703                 "       cmpwi   0, 500                          \n\t" \\r
 704                 "       bne     RegTest2Fail                    \n\t" \\r
 705                 "       mfspr   0, 1    #XER            \n\t" \\r
 706                 "       cmpwi   0, 4                            \n\t" \\r
 707                 "       bne     RegTest2Fail                    \n\t" \\r
 708                 "                                                               \n\t" \\r
 709                 "       bl prvRegTest2Pass                      \n\t" \\r
 710                 "       b RegTest2Start                         \n\t" \\r
 711                 "                                                               \n\t" \\r
 712                 "RegTest2Fail:                                  \n\t" \\r
 713                 "                                                               \n\t" \\r
 714                 "                                                               \n\t" \\r
 715                 "       bl prvRegTestFail                       \n\t" \\r
 716                 "       b RegTest2Start                         \n\t" \\r
 717         );\r
 718 }\r
 719 /*-----------------------------------------------------------*/\r
 720 \r
 721 /* This hook function will get called if there is a suspected stack overflow.\r
 722 An overflow can cause the task name to be corrupted, in which case the task\r
 723 handle needs to be used to determine the offending task. */\r
 724 void vApplicationStackOverflowHook( TaskHandle_t xTask, signed char *pcTaskName );\r
 725 void vApplicationStackOverflowHook( TaskHandle_t xTask, signed char *pcTaskName )\r
 726 {\r
 727 /* To prevent the optimiser removing the variables. */\r
 728 volatile TaskHandle_t xTaskIn = xTask;\r
 729 volatile signed char *pcTaskNameIn = pcTaskName;\r
 730 \r
 731         /* Remove compiler warnings. */\r
 732         ( void ) xTaskIn;\r
 733         ( void ) pcTaskNameIn;\r
 734 \r
 735         /* The following three calls are simply to stop compiler warnings about the\r
 736         functions not being used - they are called from the inline assembly. */\r
 737         prvRegTest1Pass();\r
 738         prvRegTest2Pass();\r
 739         prvRegTestFail();\r
 740 \r
 741         for( ;; );\r
 742 }\r
 743 \r
 744 \r
 745 \r