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Correct byte alignment on CM3 port layers.

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pull/1/head
Richard Barry 15 years ago
parent a9625ce462
commit db87c0ac06
3 changed files with 60 additions and 16 deletions
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49
Source/portable/GCC/ARM_CM3_MPU/port.c
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@ -106,7 +106,7 @@ task.h is included from an application file. */
#define portOFFSET_TO_PC ( 6 )
/* Set the privilege level to user mode if xRunningPrivileged is false. */
#define portRESET_PRIVILEGE( xRunningPrivileged ) if( xRunningPrivileged != pdTRUE ) __asm volatile ( " mrs r0, control \n orr r0, #1 \n msr control, r0 " )
#define portRESET_PRIVILEGE( xRunningPrivileged ) if( xRunningPrivileged != pdTRUE ) __asm volatile ( " mrs r0, control \n orr r0, #1 \n msr control, r0" :::"r0" )
/* Each task maintains its own interrupt status in the critical nesting
variable. Note this is not saved as part of the task context as context
@ -155,6 +155,49 @@ static void prvRestoreContextOfFirstTask( void ) __attribute__(( naked )) PRIVIL
*/
static void prvSVCHandler( unsigned long *pulRegisters ) __attribute__(( noinline )) PRIVILEGED_FUNCTION;
/*
* Prototypes for all the MPU wrappers.
*/
signed portBASE_TYPE MPU_xTaskGenericCreate( pdTASK_CODE pvTaskCode, const signed char * const pcName, unsigned short usStackDepth, void *pvParameters, unsigned portBASE_TYPE uxPriority, xTaskHandle *pxCreatedTask, portSTACK_TYPE *puxStackBuffer, const xMemoryRegion * const xRegions );
void MPU_vTaskAllocateMPURegions( xTaskHandle xTask, const xMemoryRegion * const xRegions );
void MPU_vTaskDelete( xTaskHandle pxTaskToDelete );
void MPU_vTaskDelayUntil( portTickType * const pxPreviousWakeTime, portTickType xTimeIncrement );
void MPU_vTaskDelay( portTickType xTicksToDelay );
unsigned portBASE_TYPE MPU_uxTaskPriorityGet( xTaskHandle pxTask );
void MPU_vTaskPrioritySet( xTaskHandle pxTask, unsigned portBASE_TYPE uxNewPriority );
void MPU_vTaskSuspend( xTaskHandle pxTaskToSuspend );
signed portBASE_TYPE MPU_xTaskIsTaskSuspended( xTaskHandle xTask );
void MPU_vTaskResume( xTaskHandle pxTaskToResume );
void MPU_vTaskSuspendAll( void );
signed portBASE_TYPE MPU_xTaskResumeAll( void );
portTickType MPU_xTaskGetTickCount( void );
unsigned portBASE_TYPE MPU_uxTaskGetNumberOfTasks( void );
void MPU_vTaskList( signed char *pcWriteBuffer );
void MPU_vTaskGetRunTimeStats( signed char *pcWriteBuffer );
void MPU_vTaskStartTrace( signed char * pcBuffer, unsigned long ulBufferSize );
unsigned long MPU_ulTaskEndTrace( void );
void MPU_vTaskSetApplicationTaskTag( xTaskHandle xTask, pdTASK_HOOK_CODE pxTagValue );
pdTASK_HOOK_CODE MPU_xTaskGetApplicationTaskTag( xTaskHandle xTask );
portBASE_TYPE MPU_xTaskCallApplicationTaskHook( xTaskHandle xTask, void *pvParameter );
unsigned portBASE_TYPE MPU_uxTaskGetStackHighWaterMark( xTaskHandle xTask );
xTaskHandle MPU_xTaskGetCurrentTaskHandle( void );
portBASE_TYPE MPU_xTaskGetSchedulerState( void );
xQueueHandle MPU_xQueueCreate( unsigned portBASE_TYPE uxQueueLength, unsigned portBASE_TYPE uxItemSize );
signed portBASE_TYPE MPU_xQueueGenericSend( xQueueHandle xQueue, const void * const pvItemToQueue, portTickType xTicksToWait, portBASE_TYPE xCopyPosition );
unsigned portBASE_TYPE MPU_uxQueueMessagesWaiting( const xQueueHandle pxQueue );
signed portBASE_TYPE MPU_xQueueGenericReceive( xQueueHandle pxQueue, void * const pvBuffer, portTickType xTicksToWait, portBASE_TYPE xJustPeeking );
xQueueHandle MPU_xQueueCreateMutex( void );
xQueueHandle MPU_xQueueCreateCountingSemaphore( unsigned portBASE_TYPE uxCountValue, unsigned portBASE_TYPE uxInitialCount );
portBASE_TYPE MPU_xQueueTakeMutexRecursive( xQueueHandle xMutex, portTickType xBlockTime );
portBASE_TYPE MPU_xQueueGiveMutexRecursive( xQueueHandle xMutex );
signed portBASE_TYPE MPU_xQueueAltGenericSend( xQueueHandle pxQueue, const void * const pvItemToQueue, portTickType xTicksToWait, portBASE_TYPE xCopyPosition );
signed portBASE_TYPE MPU_xQueueAltGenericReceive( xQueueHandle pxQueue, void * const pvBuffer, portTickType xTicksToWait, portBASE_TYPE xJustPeeking );
void MPU_vQueueAddToRegistry( xQueueHandle xQueue, signed char *pcName );
void *MPU_pvPortMalloc( size_t xSize );
void MPU_vPortFree( void *pv );
void MPU_vPortInitialiseBlocks( void );
size_t MPU_xPortGetFreeHeapSize( void );
/*-----------------------------------------------------------*/
/*
@ -226,7 +269,7 @@ unsigned char ucSVCNumber;
case portSVC_YIELD : *(portNVIC_INT_CTRL) = portNVIC_PENDSVSET;
break;
case portSVC_prvRaisePrivilege : __asm volatile
case portSVC_RAISE_PRIVILEGE : __asm volatile
(
" mrs r1, control \n" /* Obtain current control value. */
" bic r1, #1 \n" /* Set privilege bit. */
@ -498,7 +541,7 @@ static portBASE_TYPE prvRaisePrivilege( void )
" svcne %0 \n" /* Switch to privileged. */
" moveq r0, #1 \n" /* CONTROL[0]==0, return true. */
" bx lr \n"
:: "i" (portSVC_prvRaisePrivilege) : "r0"
:: "i" (portSVC_RAISE_PRIVILEGE) : "r0"
);
return 0;

2
Source/portable/GCC/ARM_CM3_MPU/portmacro.h
Unescape Escape View File

@ -131,7 +131,7 @@ typedef struct MPU_SETTINGS
/* SVC numbers for various services. */
#define portSVC_START_SCHEDULER 0
#define portSVC_YIELD 1
#define portSVC_prvRaisePrivilege 2
#define portSVC_RAISE_PRIVILEGE 2
/* Scheduler utilities. */

5
Source/tasks.c
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@ -389,7 +389,6 @@ signed portBASE_TYPE xTaskGenericCreate( pdTASK_CODE pxTaskCode, const signed ch
{
signed portBASE_TYPE xReturn;
tskTCB * pxNewTCB;
portBASE_TYPE xRunPrivileged;
/* Allocate the memory required by the TCB and stack for the new task,
checking that the allocation was successful. */
@ -399,7 +398,9 @@ portBASE_TYPE xRunPrivileged;
{
portSTACK_TYPE *pxTopOfStack;
#if( portUSING_MPU_WRAPPERS == 1 )
/* Should the task be created in privileged mode? */
portBASE_TYPE xRunPrivileged;
if( ( uxPriority & portPRIVILEGE_BIT ) != 0x00 )
{
xRunPrivileged = pdTRUE;
@ -409,6 +410,7 @@ portBASE_TYPE xRunPrivileged;
xRunPrivileged = pdFALSE;
}
uxPriority &= ~portPRIVILEGE_BIT;
#endif /* portUSING_MPU_WRAPPERS == 1 */
/* Calculate the top of stack address. This depends on whether the
stack grows from high memory to low (as per the 80x86) or visa versa.
@ -444,7 +446,6 @@ portBASE_TYPE xRunPrivileged;
#else
{
pxNewTCB->pxTopOfStack = pxPortInitialiseStack( pxTopOfStack, pxTaskCode, pvParameters );
( void ) xRunPrivileged;
}
#endif

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