git.sur5r.net Git - freertos/blob - Demo/PPC405_Xilinx_Virtex4_GCC/RTOSDemo/main.c

   1 /*
   2         FreeRTOS.org V5.0.0 - Copyright (C) 2003-2008 Richard Barry.
   3
   4         This file is part of the FreeRTOS.org distribution.
   5
   6         FreeRTOS.org is free software; you can redistribute it and/or modify
   7         it under the terms of the GNU General Public License as published by
   8         the Free Software Foundation; either version 2 of the License, or
   9         (at your option) any later version.
  10
  11         FreeRTOS.org is distributed in the hope that it will be useful,
  12         but WITHOUT ANY WARRANTY; without even the implied warranty of
  13         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14         GNU General Public License for more details.
  15
  16         You should have received a copy of the GNU General Public License
  17         along with FreeRTOS.org; if not, write to the Free Software
  18         Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19
  20         A special exception to the GPL can be applied should you wish to distribute
  21         a combined work that includes FreeRTOS.org, without being obliged to provide
  22         the source code for any proprietary components.  See the licensing section
  23         of http://www.FreeRTOS.org for full details of how and when the exception
  24         can be applied.
  25
  26     ***************************************************************************
  27     ***************************************************************************
  28     *                                                                         *
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  32     * expedite your project.                                                  *
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  34     ***************************************************************************
  35     ***************************************************************************
  36
  37         Please ensure to read the configuration and relevant port sections of the
  38         online documentation.
  39
  40         http://www.FreeRTOS.org - Documentation, latest information, license and
  41         contact details.
  42
  43         http://www.SafeRTOS.com - A version that is certified for use in safety
  44         critical systems.
  45
  46         http://www.OpenRTOS.com - Commercial support, development, porting,
  47         licensing and training services.
  48 */
  49
  50 /*
  51  * Creates all the demo application tasks, then starts the scheduler.  The WEB
  52  * documentation provides more details of the demo application tasks.
  53  *
  54  * In addition to the standard demo tasks, the follow demo specific tasks are
  55  * create:
  56  *
  57  * The "Check" task.  This only executes every three seconds but has the highest
  58  * priority so is guaranteed to get processor time.  Its main function is to
  59  * check that all the other tasks are still operational.  Most tasks maintain
  60  * a unique count that is incremented each time the task successfully completes
  61  * its function.  Should any error occur within such a task the count is
  62  * permanently halted.  The check task inspects the count of each task to ensure
  63  * it has changed since the last time the check task executed.  If all the count
  64  * variables have changed all the tasks are still executing error free, and the
  65  * check task toggles the onboard LED.  Should any task contain an error at any time
  66  * the LED toggle rate will change from 3 seconds to 500ms.
  67  *
  68  * The "Register Check" tasks.  These tasks fill the CPU registers with known
  69  * values, then check that each register still contains the expected value, the
  70  * discovery of an unexpected value being indicative of an error in the RTOS
  71  * context switch mechanism.  The register check tasks operate at low priority
  72  * so are switched in and out frequently.
  73  *
  74  */
  75
  76 /* Scheduler includes. */
  77 #include "FreeRTOS.h"
  78 #include "task.h"
  79
  80 /* Xilinx library includes. */
  81 #include "xcache_l.h"
  82 #include "xintc.h"
  83
  84 /* Demo application includes. */
  85 #include "flash.h"
  86 #include "integer.h"
  87 #include "comtest2.h"
  88 #include "semtest.h"
  89 #include "BlockQ.h"
  90 #include "dynamic.h"
  91 #include "GenQTest.h"
  92 #include "QPeek.h"
  93 #include "blocktim.h"
  94 #include "death.h"
  95 #include "partest.h"
  96 #include "countsem.h"
  97 #include "recmutex.h"
  98 #include "flop.h"
  99 #include "flop-reg-test.h"
 100
 101 /* Priorities assigned to the demo tasks. */
 102 #define mainCHECK_TASK_PRIORITY                 ( tskIDLE_PRIORITY + 4 )
 103 #define mainSEM_TEST_PRIORITY                   ( tskIDLE_PRIORITY + 2 )
 104 #define mainCOM_TEST_PRIORITY                   ( tskIDLE_PRIORITY + 1 )
 105 #define mainQUEUE_BLOCK_PRIORITY                ( tskIDLE_PRIORITY + 1 )
 106 #define mainDEATH_PRIORITY                              ( tskIDLE_PRIORITY + 1 )
 107 #define mainLED_TASK_PRIORITY                   ( tskIDLE_PRIORITY + 1 )
 108 #define mainGENERIC_QUEUE_PRIORITY              ( tskIDLE_PRIORITY )
 109 #define mainQUEUE_POLL_PRIORITY                 ( tskIDLE_PRIORITY + 1 )
 110 #define mainFLOP_PRIORITY                               ( tskIDLE_PRIORITY )
 111
 112 /* The first LED used by the COM test and check tasks respectively. */
 113 #define mainCOM_TEST_LED                                ( 4 )
 114 #define mainCHECK_TEST_LED                              ( 3 )
 115
 116 /* The baud rate used by the comtest tasks is set by the hardware, so the
 117 baud rate parameters passed into the comtest initialisation has no effect. */
 118 #define mainBAUD_SET_IN_HARDWARE                ( 0 )
 119
 120 /* Delay periods used by the check task.  If no errors have been found then
 121 the check LED will toggle every mainNO_ERROR_CHECK_DELAY milliseconds.  If an
 122 error has been found at any time then the toggle rate will increase to
 123 mainERROR_CHECK_DELAY milliseconds. */
 124 #define mainNO_ERROR_CHECK_DELAY                ( ( portTickType ) 3000 / portTICK_RATE_MS  )
 125 #define mainERROR_CHECK_DELAY                   ( ( portTickType ) 500 / portTICK_RATE_MS  )
 126
 127
 128 /*
 129  * The tasks defined within this file - described within the comments at the
 130  * head of this page.
 131  */
 132 static void prvRegTestTask1( void *pvParameters );
 133 static void prvRegTestTask2( void *pvParameters );
 134 static void prvErrorChecks( void *pvParameters );
 135
 136 /*
 137  * Called by the 'check' task to inspect all the standard demo tasks within
 138  * the system, as described within the comments at the head of this page.
 139  */
 140 static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void );
 141
 142 /*
 143  * Perform any hardware initialisation required by the demo application.
 144  */
 145 static void prvSetupHardware( void );
 146
 147 /*-----------------------------------------------------------*/
 148
 149 /* xRegTestStatus will get set to pdFAIL by the regtest tasks if they
 150 discover an unexpected value. */
 151 static volatile unsigned portBASE_TYPE xRegTestStatus = pdPASS;
 152
 153 /* Counters used to ensure the regtest tasks are still running. */
 154 static volatile unsigned portLONG ulRegTest1Counter = 0UL, ulRegTest2Counter = 0UL;
 155
 156 /*-----------------------------------------------------------*/
 157
 158 int main( void )
 159 {
 160
 161         /* Must be called prior to installing any interrupt handlers! */
 162         vPortSetupInterruptController();
 163
 164         /* In this case prvSetupHardware() just enables the caches and and
 165         configures the IO ports for the LED outputs. */
 166         prvSetupHardware();
 167
 168         /* Start the standard demo application tasks.  Note that the baud rate used
 169         by the comtest tasks is set by the hardware, so the baud rate parameter
 170         passed has no effect. */
 171         vStartLEDFlashTasks( mainLED_TASK_PRIORITY );
 172         vStartIntegerMathTasks( tskIDLE_PRIORITY );
 173         vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainBAUD_SET_IN_HARDWARE, mainCOM_TEST_LED );
 174         vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
 175         vStartBlockingQueueTasks ( mainQUEUE_BLOCK_PRIORITY );
 176         vStartDynamicPriorityTasks();
 177         vStartGenericQueueTasks( mainGENERIC_QUEUE_PRIORITY );
 178         vStartQueuePeekTasks();
 179         vCreateBlockTimeTasks();
 180         vStartCountingSemaphoreTasks();
 181         vStartRecursiveMutexTasks();
 182
 183         #if ( configUSE_FPU == 1 )\r
 184         {\r
 185                 /* A different project is provided that has configUSE_FPU set to 1\r
 186                 in order to demonstrate all the settings required to use the floating\r
 187                 point unit.  If you wish to use the floating point unit do not start\r
 188                 with this project. */
 189                 vStartMathTasks( mainFLOP_PRIORITY );
 190                 vStartFlopRegTests();\r
 191         }
 192         #endif
 193
 194         /* Create the tasks defined within this file. */
 195         xTaskCreate( prvRegTestTask1, ( signed portCHAR * ) "Regtest1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
 196         xTaskCreate( prvRegTestTask2, ( signed portCHAR * ) "Regtest2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
 197         xTaskCreate( prvErrorChecks, ( signed portCHAR * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
 198
 199         /* The suicide tasks must be started last as they record the number of other
 200         tasks that exist within the system.  The value is then used to ensure at run
 201         time the number of tasks that exists is within expected bounds. */
 202         vCreateSuicidalTasks( mainDEATH_PRIORITY );
 203
 204         /* Now start the scheduler.  Following this call the created tasks should
 205         be executing. */
 206         vTaskStartScheduler();
 207
 208         /* vTaskStartScheduler() will only return if an error occurs while the
 209         idle task is being created. */
 210         for( ;; );
 211
 212         return 0;
 213 }
 214 /*-----------------------------------------------------------*/
 215
 216 static portBASE_TYPE prvCheckOtherTasksAreStillRunning( void )
 217 {
 218 portBASE_TYPE lReturn = pdPASS;
 219 static unsigned portLONG ulLastRegTest1Counter= 0UL, ulLastRegTest2Counter = 0UL;
 220
 221         /* The demo tasks maintain a count that increments every cycle of the task
 222         provided that the task has never encountered an error.  This function
 223         checks the counts maintained by the tasks to ensure they are still being
 224         incremented.  A count remaining at the same value between calls therefore
 225         indicates that an error has been detected. */
 226
 227         if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
 228         {
 229                 lReturn = pdFAIL;
 230         }
 231
 232         if( xAreComTestTasksStillRunning() != pdTRUE )
 233         {
 234                 lReturn = pdFAIL;
 235         }
 236
 237         if( xAreSemaphoreTasksStillRunning() != pdTRUE )
 238         {
 239                 lReturn = pdFAIL;
 240         }
 241
 242         if( xAreBlockingQueuesStillRunning() != pdTRUE )
 243         {
 244                 lReturn = pdFAIL;
 245         }
 246
 247         if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
 248         {
 249                 lReturn = pdFAIL;
 250         }
 251
 252         if( xIsCreateTaskStillRunning() != pdTRUE )
 253         {
 254                 lReturn = pdFAIL;
 255         }
 256
 257         if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
 258         {
 259                 lReturn = pdFAIL;
 260         }
 261
 262         if( xAreGenericQueueTasksStillRunning() != pdTRUE )
 263         {
 264                 lReturn = pdFAIL;
 265         }
 266
 267         if( xAreQueuePeekTasksStillRunning() != pdTRUE )
 268         {
 269                 lReturn = pdFAIL;
 270         }
 271
 272         if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
 273         {
 274                 lReturn = pdFAIL;
 275         }
 276
 277         if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
 278         {
 279                 lReturn = pdFAIL;
 280         }
 281
 282         #if ( configUSE_FPU == 1 )
 283                 if( xAreMathsTaskStillRunning() != pdTRUE )
 284                 {
 285                         lReturn = pdFAIL;
 286                 }
 287
 288                 if( xAreFlopRegisterTestsStillRunning() != pdTRUE )
 289                 {
 290                         lReturn = pdFAIL;
 291                 }
 292         #endif
 293
 294         /* Have the register test tasks found any errors? */
 295         if( xRegTestStatus != pdPASS )
 296         {
 297                 lReturn = pdFAIL;
 298         }
 299
 300         /* Are the register test tasks still looping? */
 301         if( ulLastRegTest1Counter == ulRegTest1Counter )
 302         {
 303                 lReturn = pdFAIL;
 304         }
 305         else
 306         {
 307                 ulLastRegTest1Counter = ulRegTest1Counter;
 308         }
 309
 310         if( ulLastRegTest2Counter == ulRegTest2Counter )
 311         {
 312                 lReturn = pdFAIL;
 313         }
 314         else
 315         {
 316                 ulLastRegTest2Counter = ulRegTest2Counter;
 317         }
 318
 319         return lReturn;
 320 }
 321 /*-----------------------------------------------------------*/
 322
 323 static void prvErrorChecks( void *pvParameters )
 324 {
 325 portTickType xDelayPeriod = mainNO_ERROR_CHECK_DELAY, xLastExecutionTime;
 326 volatile unsigned portBASE_TYPE uxFreeStack;
 327 \r
 328         /* Just to remove compiler warning. */
 329         ( void ) pvParameters;
 330
 331         /* This call is just to demonstrate the use of the function - nothing is
 332         done with the value.  You would expect the stack high water mark to be
 333         lower (the function to return a larger value) here at function entry than
 334         later following calls to other functions. */
 335         uxFreeStack = uxTaskGetStackHighWaterMark( NULL );
 336
 337         /* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()
 338         works correctly. */
 339         xLastExecutionTime = xTaskGetTickCount();
 340
 341         /* Cycle for ever, delaying then checking all the other tasks are still
 342         operating without error. */
 343         for( ;; )
 344         {
 345                 /* Again just for demo purposes - uxFreeStack should have a lower value
 346                 here than following the call to uxTaskGetStackHighWaterMark() on the
 347                 task entry. */
 348                 uxFreeStack = uxTaskGetStackHighWaterMark( NULL );
 349
 350                 /* Wait until it is time to check again.  The time we wait here depends
 351                 on whether an error has been detected or not.  When an error is
 352                 detected the time is shortened resulting in a faster LED flash rate. */
 353                 vTaskDelayUntil( &xLastExecutionTime, xDelayPeriod );
 354
 355                 /* See if the other tasks are all ok. */
 356                 if( prvCheckOtherTasksAreStillRunning() != pdPASS )
 357                 {
 358                         /* An error occurred in one of the tasks so shorten the delay
 359                         period - which has the effect of increasing the frequency of the
 360                         LED toggle. */
 361                         xDelayPeriod = mainERROR_CHECK_DELAY;
 362                 }
 363
 364                 /* Flash! */
 365                 vParTestToggleLED( mainCHECK_TEST_LED );
 366         }
 367 }
 368 /*-----------------------------------------------------------*/
 369
 370 static void prvSetupHardware( void )
 371 {
 372         XCache_EnableICache( 0x80000000 );
 373         XCache_EnableDCache( 0x80000000 );
 374
 375         /* Setup the IO port for use with the LED outputs. */
 376         vParTestInitialise();
 377 }
 378 /*-----------------------------------------------------------*/
 379
 380 void prvRegTest1Pass( void )
 381 {
 382         /* Called from the inline assembler - this cannot be static
 383         otherwise it can get optimised away. */
 384         ulRegTest1Counter++;
 385 }
 386 /*-----------------------------------------------------------*/
 387
 388 void prvRegTest2Pass( void )
 389 {
 390         /* Called from the inline assembler - this cannot be static
 391         otherwise it can get optimised away. */
 392         ulRegTest2Counter++;
 393 }
 394 /*-----------------------------------------------------------*/
 395
 396 void prvRegTestFail( void )
 397 {
 398         /* Called from the inline assembler - this cannot be static
 399         otherwise it can get optimised away. */
 400         xRegTestStatus = pdFAIL;
 401 }
 402 /*-----------------------------------------------------------*/
 403
 404 static void prvRegTestTask1( void *pvParameters )
 405 {\r
 406         /* Just to remove compiler warning. */
 407         ( void ) pvParameters;
 408
 409         /* The first register test task as described at the top of this file.  The
 410         values used in the registers are different to those use in the second
 411         register test task.  Also, unlike the second register test task, this task
 412         yields between setting the register values and subsequently checking the
 413         register values. */
 414         asm volatile
 415         (
 416                 "RegTest1Start:                                 \n\t" \
 417                 "                                                               \n\t" \
 418                 "       li              0, 301                          \n\t" \
 419                 "       mtspr   256, 0  #USPRG0         \n\t" \
 420                 "       li              0, 501                          \n\t" \
 421                 "       mtspr   8, 0    #LR                     \n\t" \
 422                 "       li              0, 4                            \n\t" \
 423                 "       mtspr   1, 0    #XER            \n\t" \
 424                 "                                                               \n\t" \
 425                 "       li              0, 1                            \n\t" \
 426                 "       li              2, 2                            \n\t" \
 427                 "       li              3, 3                            \n\t" \
 428                 "       li              4,      4                               \n\t" \
 429                 "       li              5,      5                               \n\t" \
 430                 "       li              6,      6                               \n\t" \
 431                 "       li              7,      7                               \n\t" \
 432                 "       li              8,      8                               \n\t" \
 433                 "       li              9,      9                               \n\t" \
 434                 "       li              10,     10                              \n\t" \
 435                 "       li              11,     11                              \n\t" \
 436                 "       li              12,     12                              \n\t" \
 437                 "       li              13,     13                              \n\t" \
 438                 "       li              14,     14                              \n\t" \
 439                 "       li              15,     15                              \n\t" \
 440                 "       li              16,     16                              \n\t" \
 441                 "       li              17,     17                              \n\t" \
 442                 "       li              18,     18                              \n\t" \
 443                 "       li              19,     19                              \n\t" \
 444                 "       li              20,     20                              \n\t" \
 445                 "       li              21,     21                              \n\t" \
 446                 "       li              22,     22                              \n\t" \
 447                 "       li              23,     23                              \n\t" \
 448                 "       li              24,     24                              \n\t" \
 449                 "       li              25,     25                              \n\t" \
 450                 "       li              26,     26                              \n\t" \
 451                 "       li              27,     27                              \n\t" \
 452                 "       li              28,     28                              \n\t" \
 453                 "       li              29,     29                              \n\t" \
 454                 "       li              30,     30                              \n\t" \
 455                 "       li              31,     31                              \n\t" \
 456                 "                                                               \n\t" \
 457                 "       sc                                                      \n\t" \
 458                 "       nop                                                     \n\t" \
 459                 "                                                               \n\t" \
 460                 "       cmpwi   0, 1                            \n\t" \
 461                 "       bne     RegTest1Fail                    \n\t" \
 462                 "       cmpwi   2, 2                            \n\t" \
 463                 "       bne     RegTest1Fail                    \n\t" \
 464                 "       cmpwi   3, 3                            \n\t" \
 465                 "       bne     RegTest1Fail                    \n\t" \
 466                 "       cmpwi   4, 4                            \n\t" \
 467                 "       bne     RegTest1Fail                    \n\t" \
 468                 "       cmpwi   5, 5                            \n\t" \
 469                 "       bne     RegTest1Fail                    \n\t" \
 470                 "       cmpwi   6, 6                            \n\t" \
 471                 "       bne     RegTest1Fail                    \n\t" \
 472                 "       cmpwi   7, 7                            \n\t" \
 473                 "       bne     RegTest1Fail                    \n\t" \
 474                 "       cmpwi   8, 8                            \n\t" \
 475                 "       bne     RegTest1Fail                    \n\t" \
 476                 "       cmpwi   9, 9                            \n\t" \
 477                 "       bne     RegTest1Fail                    \n\t" \
 478                 "       cmpwi   10, 10                          \n\t" \
 479                 "       bne     RegTest1Fail                    \n\t" \
 480                 "       cmpwi   11, 11                          \n\t" \
 481                 "       bne     RegTest1Fail                    \n\t" \
 482                 "       cmpwi   12, 12                          \n\t" \
 483                 "       bne     RegTest1Fail                    \n\t" \
 484                 "       cmpwi   13, 13                          \n\t" \
 485                 "       bne     RegTest1Fail                    \n\t" \
 486                 "       cmpwi   14, 14                          \n\t" \
 487                 "       bne     RegTest1Fail                    \n\t" \
 488                 "       cmpwi   15, 15                          \n\t" \
 489                 "       bne     RegTest1Fail                    \n\t" \
 490                 "       cmpwi   16, 16                          \n\t" \
 491                 "       bne     RegTest1Fail                    \n\t" \
 492                 "       cmpwi   17, 17                          \n\t" \
 493                 "       bne     RegTest1Fail                    \n\t" \
 494                 "       cmpwi   18, 18                          \n\t" \
 495                 "       bne     RegTest1Fail                    \n\t" \
 496                 "       cmpwi   19, 19                          \n\t" \
 497                 "       bne     RegTest1Fail                    \n\t" \
 498                 "       cmpwi   20, 20                          \n\t" \
 499                 "       bne     RegTest1Fail                    \n\t" \
 500                 "       cmpwi   21, 21                          \n\t" \
 501                 "       bne     RegTest1Fail                    \n\t" \
 502                 "       cmpwi   22, 22                          \n\t" \
 503                 "       bne     RegTest1Fail                    \n\t" \
 504                 "       cmpwi   23, 23                          \n\t" \
 505                 "       bne     RegTest1Fail                    \n\t" \
 506                 "       cmpwi   24, 24                          \n\t" \
 507                 "       bne     RegTest1Fail                    \n\t" \
 508                 "       cmpwi   25, 25                          \n\t" \
 509                 "       bne     RegTest1Fail                    \n\t" \
 510                 "       cmpwi   26, 26                          \n\t" \
 511                 "       bne     RegTest1Fail                    \n\t" \
 512                 "       cmpwi   27, 27                          \n\t" \
 513                 "       bne     RegTest1Fail                    \n\t" \
 514                 "       cmpwi   28, 28                          \n\t" \
 515                 "       bne     RegTest1Fail                    \n\t" \
 516                 "       cmpwi   29, 29                          \n\t" \
 517                 "       bne     RegTest1Fail                    \n\t" \
 518                 "       cmpwi   30, 30                          \n\t" \
 519                 "       bne     RegTest1Fail                    \n\t" \
 520                 "       cmpwi   31, 31                          \n\t" \
 521                 "       bne     RegTest1Fail                    \n\t" \
 522                 "                                                               \n\t" \
 523                 "       mfspr   0, 256  #USPRG0         \n\t" \
 524                 "       cmpwi   0, 301                          \n\t" \
 525                 "       bne     RegTest1Fail                    \n\t" \
 526                 "       mfspr   0, 8    #LR                     \n\t" \
 527                 "       cmpwi   0, 501                          \n\t" \
 528                 "       bne     RegTest1Fail                    \n\t" \
 529                 "       mfspr   0, 1    #XER            \n\t" \
 530                 "       cmpwi   0, 4                            \n\t" \
 531                 "       bne     RegTest1Fail                    \n\t" \
 532                 "                                                               \n\t" \
 533                 "       bl prvRegTest1Pass                      \n\t" \
 534                 "       b RegTest1Start                         \n\t" \
 535                 "                                                               \n\t" \
 536                 "RegTest1Fail:                                  \n\t" \
 537                 "                                                               \n\t" \
 538                 "                                                               \n\t" \
 539                 "       bl prvRegTestFail                       \n\t" \
 540                 "       b RegTest1Start                         \n\t" \
 541         );
 542 }
 543 /*-----------------------------------------------------------*/
 544
 545 static void prvRegTestTask2( void *pvParameters )
 546 {\r
 547         /* Just to remove compiler warning. */
 548         ( void ) pvParameters;
 549
 550         /* The second register test task as described at the top of this file.
 551         Note that this task fills the registers with different values to the
 552         first register test task. */
 553         asm volatile
 554         (
 555                 "RegTest2Start:                                 \n\t" \
 556                 "                                                               \n\t" \
 557                 "       li              0, 300                          \n\t" \
 558                 "       mtspr   256, 0  #USPRG0         \n\t" \
 559                 "       li              0, 500                          \n\t" \
 560                 "       mtspr   8, 0    #LR                     \n\t" \
 561                 "       li              0, 4                            \n\t" \
 562                 "       mtspr   1, 0    #XER            \n\t" \
 563                 "                                                               \n\t" \
 564                 "       li              0, 11                           \n\t" \
 565                 "       li              2, 12                           \n\t" \
 566                 "       li              3, 13                           \n\t" \
 567                 "       li              4,      14                              \n\t" \
 568                 "       li              5,      15                              \n\t" \
 569                 "       li              6,      16                              \n\t" \
 570                 "       li              7,      17                              \n\t" \
 571                 "       li              8,      18                              \n\t" \
 572                 "       li              9,      19                              \n\t" \
 573                 "       li              10,     110                             \n\t" \
 574                 "       li              11,     111                             \n\t" \
 575                 "       li              12,     112                             \n\t" \
 576                 "       li              13,     113                             \n\t" \
 577                 "       li              14,     114                             \n\t" \
 578                 "       li              15,     115                             \n\t" \
 579                 "       li              16,     116                             \n\t" \
 580                 "       li              17,     117                             \n\t" \
 581                 "       li              18,     118                             \n\t" \
 582                 "       li              19,     119                             \n\t" \
 583                 "       li              20,     120                             \n\t" \
 584                 "       li              21,     121                             \n\t" \
 585                 "       li              22,     122                             \n\t" \
 586                 "       li              23,     123                             \n\t" \
 587                 "       li              24,     124                             \n\t" \
 588                 "       li              25,     125                             \n\t" \
 589                 "       li              26,     126                             \n\t" \
 590                 "       li              27,     127                             \n\t" \
 591                 "       li              28,     128                             \n\t" \
 592                 "       li              29,     129                             \n\t" \
 593                 "       li              30,     130                             \n\t" \
 594                 "       li              31,     131                             \n\t" \
 595                 "                                                               \n\t" \
 596                 "       cmpwi   0, 11                           \n\t" \
 597                 "       bne     RegTest2Fail                    \n\t" \
 598                 "       cmpwi   2, 12                           \n\t" \
 599                 "       bne     RegTest2Fail                    \n\t" \
 600                 "       cmpwi   3, 13                           \n\t" \
 601                 "       bne     RegTest2Fail                    \n\t" \
 602                 "       cmpwi   4, 14                           \n\t" \
 603                 "       bne     RegTest2Fail                    \n\t" \
 604                 "       cmpwi   5, 15                           \n\t" \
 605                 "       bne     RegTest2Fail                    \n\t" \
 606                 "       cmpwi   6, 16                           \n\t" \
 607                 "       bne     RegTest2Fail                    \n\t" \
 608                 "       cmpwi   7, 17                           \n\t" \
 609                 "       bne     RegTest2Fail                    \n\t" \
 610                 "       cmpwi   8, 18                           \n\t" \
 611                 "       bne     RegTest2Fail                    \n\t" \
 612                 "       cmpwi   9, 19                           \n\t" \
 613                 "       bne     RegTest2Fail                    \n\t" \
 614                 "       cmpwi   10, 110                         \n\t" \
 615                 "       bne     RegTest2Fail                    \n\t" \
 616                 "       cmpwi   11, 111                         \n\t" \
 617                 "       bne     RegTest2Fail                    \n\t" \
 618                 "       cmpwi   12, 112                         \n\t" \
 619                 "       bne     RegTest2Fail                    \n\t" \
 620                 "       cmpwi   13, 113                         \n\t" \
 621                 "       bne     RegTest2Fail                    \n\t" \
 622                 "       cmpwi   14, 114                         \n\t" \
 623                 "       bne     RegTest2Fail                    \n\t" \
 624                 "       cmpwi   15, 115                         \n\t" \
 625                 "       bne     RegTest2Fail                    \n\t" \
 626                 "       cmpwi   16, 116                         \n\t" \
 627                 "       bne     RegTest2Fail                    \n\t" \
 628                 "       cmpwi   17, 117                         \n\t" \
 629                 "       bne     RegTest2Fail                    \n\t" \
 630                 "       cmpwi   18, 118                         \n\t" \
 631                 "       bne     RegTest2Fail                    \n\t" \
 632                 "       cmpwi   19, 119                         \n\t" \
 633                 "       bne     RegTest2Fail                    \n\t" \
 634                 "       cmpwi   20, 120                         \n\t" \
 635                 "       bne     RegTest2Fail                    \n\t" \
 636                 "       cmpwi   21, 121                         \n\t" \
 637                 "       bne     RegTest2Fail                    \n\t" \
 638                 "       cmpwi   22, 122                         \n\t" \
 639                 "       bne     RegTest2Fail                    \n\t" \
 640                 "       cmpwi   23, 123                         \n\t" \
 641                 "       bne     RegTest2Fail                    \n\t" \
 642                 "       cmpwi   24, 124                         \n\t" \
 643                 "       bne     RegTest2Fail                    \n\t" \
 644                 "       cmpwi   25, 125                         \n\t" \
 645                 "       bne     RegTest2Fail                    \n\t" \
 646                 "       cmpwi   26, 126                         \n\t" \
 647                 "       bne     RegTest2Fail                    \n\t" \
 648                 "       cmpwi   27, 127                         \n\t" \
 649                 "       bne     RegTest2Fail                    \n\t" \
 650                 "       cmpwi   28, 128                         \n\t" \
 651                 "       bne     RegTest2Fail                    \n\t" \
 652                 "       cmpwi   29, 129                         \n\t" \
 653                 "       bne     RegTest2Fail                    \n\t" \
 654                 "       cmpwi   30, 130                         \n\t" \
 655                 "       bne     RegTest2Fail                    \n\t" \
 656                 "       cmpwi   31, 131                         \n\t" \
 657                 "       bne     RegTest2Fail                    \n\t" \
 658                 "                                                               \n\t" \
 659                 "       mfspr   0, 256  #USPRG0         \n\t" \
 660                 "       cmpwi   0, 300                          \n\t" \
 661                 "       bne     RegTest2Fail                    \n\t" \
 662                 "       mfspr   0, 8    #LR                     \n\t" \
 663                 "       cmpwi   0, 500                          \n\t" \
 664                 "       bne     RegTest2Fail                    \n\t" \
 665                 "       mfspr   0, 1    #XER            \n\t" \
 666                 "       cmpwi   0, 4                            \n\t" \
 667                 "       bne     RegTest2Fail                    \n\t" \
 668                 "                                                               \n\t" \
 669                 "       bl prvRegTest2Pass                      \n\t" \
 670                 "       b RegTest2Start                         \n\t" \
 671                 "                                                               \n\t" \
 672                 "RegTest2Fail:                                  \n\t" \
 673                 "                                                               \n\t" \
 674                 "                                                               \n\t" \
 675                 "       bl prvRegTestFail                       \n\t" \
 676                 "       b RegTest2Start                         \n\t" \
 677         );
 678 }
 679 /*-----------------------------------------------------------*/
 680
 681 /* This hook function will get called if there is a suspected stack overflow.
 682 An overflow can cause the task name to be corrupted, in which case the task
 683 handle needs to be used to determine the offending task. */
 684 void vApplicationStackOverflowHook( xTaskHandle xTask, signed portCHAR *pcTaskName );
 685 void vApplicationStackOverflowHook( xTaskHandle xTask, signed portCHAR *pcTaskName )
 686 {
 687 /* To prevent the optimiser removing the variables. */
 688 volatile xTaskHandle xTaskIn = xTask;
 689 volatile signed portCHAR *pcTaskNameIn = pcTaskName;
 690 \r
 691         /* Remove compiler warnings. */\r
 692         ( void ) xTaskIn;\r
 693         ( void ) pcTaskNameIn;\r
 694
 695         /* The following three calls are simply to stop compiler warnings about the
 696         functions not being used - they are called from the inline assembly. */
 697         prvRegTest1Pass();
 698         prvRegTest2Pass();
 699         prvRegTestFail();
 700
 701         for( ;; );
 702 }
 703
 704
 705