mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
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Style: uncrusitfy
This commit is contained in:
Alfred Gedeon
alfred gedeon
parent
a5dbc2b1de
commit
718178c68a
406 changed files with 108795 additions and 106323 deletions
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@ -32,50 +32,50 @@
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#include "task.h"
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#if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
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/* Check the configuration. */
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#if( configMAX_PRIORITIES > 32 )
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#error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32. It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
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#endif
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/* Check the configuration. */
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#if ( configMAX_PRIORITIES > 32 )
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#error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32. It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
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#endif
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#endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
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#ifndef configSETUP_TICK_INTERRUPT
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#error configSETUP_TICK_INTERRUPT() must be defined in FreeRTOSConfig.h to call the function that sets up the tick interrupt.
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#error configSETUP_TICK_INTERRUPT() must be defined in FreeRTOSConfig.h to call the function that sets up the tick interrupt.
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#endif
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#ifndef configCLEAR_TICK_INTERRUPT
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#error configCLEAR_TICK_INTERRUPT must be defined in FreeRTOSConfig.h to clear which ever interrupt was used to generate the tick interrupt.
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#error configCLEAR_TICK_INTERRUPT must be defined in FreeRTOSConfig.h to clear which ever interrupt was used to generate the tick interrupt.
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#endif
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/* A critical section is exited when the critical section nesting count reaches
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this value. */
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#define portNO_CRITICAL_NESTING ( ( uint32_t ) 0 )
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* this value. */
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#define portNO_CRITICAL_NESTING ( ( uint32_t ) 0 )
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/* Tasks are not created with a floating point context, but can be given a
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floating point context after they have been created. A variable is stored as
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part of the tasks context that holds portNO_FLOATING_POINT_CONTEXT if the task
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does not have an FPU context, or any other value if the task does have an FPU
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context. */
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#define portNO_FLOATING_POINT_CONTEXT ( ( StackType_t ) 0 )
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* floating point context after they have been created. A variable is stored as
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* part of the tasks context that holds portNO_FLOATING_POINT_CONTEXT if the task
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* does not have an FPU context, or any other value if the task does have an FPU
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* context. */
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#define portNO_FLOATING_POINT_CONTEXT ( ( StackType_t ) 0 )
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/* Constants required to setup the initial task context. */
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#define portINITIAL_SPSR ( ( StackType_t ) 0x1f ) /* System mode, ARM mode, IRQ enabled FIQ enabled. */
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#define portTHUMB_MODE_BIT ( ( StackType_t ) 0x20 )
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#define portTHUMB_MODE_ADDRESS ( 0x01UL )
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#define portINITIAL_SPSR ( ( StackType_t ) 0x1f ) /* System mode, ARM mode, IRQ enabled FIQ enabled. */
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#define portTHUMB_MODE_BIT ( ( StackType_t ) 0x20 )
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#define portTHUMB_MODE_ADDRESS ( 0x01UL )
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/* Masks all bits in the APSR other than the mode bits. */
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#define portAPSR_MODE_BITS_MASK ( 0x1F )
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#define portAPSR_MODE_BITS_MASK ( 0x1F )
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/* The value of the mode bits in the APSR when the CPU is executing in user
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mode. */
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#define portAPSR_USER_MODE ( 0x10 )
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* mode. */
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#define portAPSR_USER_MODE ( 0x10 )
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/* Let the user override the pre-loading of the initial LR with the address of
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prvTaskExitError() in case it messes up unwinding of the stack in the
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debugger. */
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* prvTaskExitError() in case it messes up unwinding of the stack in the
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* debugger. */
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#ifdef configTASK_RETURN_ADDRESS
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#define portTASK_RETURN_ADDRESS configTASK_RETURN_ADDRESS
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#define portTASK_RETURN_ADDRESS configTASK_RETURN_ADDRESS
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#else
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#define portTASK_RETURN_ADDRESS prvTaskExitError
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#define portTASK_RETURN_ADDRESS prvTaskExitError
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#endif
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/*-----------------------------------------------------------*/
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@ -94,225 +94,229 @@ static void prvTaskExitError( void );
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/*-----------------------------------------------------------*/
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/* A variable is used to keep track of the critical section nesting. This
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variable has to be stored as part of the task context and must be initialised to
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a non zero value to ensure interrupts don't inadvertently become unmasked before
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the scheduler starts. As it is stored as part of the task context it will
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automatically be set to 0 when the first task is started. */
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volatile uint32_t ulCriticalNesting = 9999UL;
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* variable has to be stored as part of the task context and must be initialised to
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* a non zero value to ensure interrupts don't inadvertently become unmasked before
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* the scheduler starts. As it is stored as part of the task context it will
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* automatically be set to 0 when the first task is started. */
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volatile uint32_t ulCriticalNesting = 9999UL;
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/* Saved as part of the task context. If ulPortTaskHasFPUContext is non-zero then
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a floating point context must be saved and restored for the task. */
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* a floating point context must be saved and restored for the task. */
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volatile uint32_t ulPortTaskHasFPUContext = pdFALSE;
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/* Set to 1 to pend a context switch from an ISR. */
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volatile uint32_t ulPortYieldRequired = pdFALSE;
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volatile uint32_t ulPortYieldRequired = pdFALSE;
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/* Counts the interrupt nesting depth. A context switch is only performed if
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if the nesting depth is 0. */
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volatile uint32_t ulPortInterruptNesting = 0UL;
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* if the nesting depth is 0. */
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volatile uint32_t ulPortInterruptNesting = 0UL;
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/* Used in the asm file to clear an interrupt. */
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__attribute__(( used )) const uint32_t ulICCEOIR = configEOI_ADDRESS;
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__attribute__( ( used ) ) const uint32_t ulICCEOIR = configEOI_ADDRESS;
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/*-----------------------------------------------------------*/
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/*
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* See header file for description.
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*/
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StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
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StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
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TaskFunction_t pxCode,
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void * pvParameters )
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{
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/* Setup the initial stack of the task. The stack is set exactly as
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expected by the portRESTORE_CONTEXT() macro.
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/* Setup the initial stack of the task. The stack is set exactly as
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* expected by the portRESTORE_CONTEXT() macro.
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*
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* The fist real value on the stack is the status register, which is set for
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* system mode, with interrupts enabled. A few NULLs are added first to ensure
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* GDB does not try decoding a non-existent return address. */
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*pxTopOfStack = ( StackType_t ) NULL;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) NULL;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) NULL;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) portINITIAL_SPSR;
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The fist real value on the stack is the status register, which is set for
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system mode, with interrupts enabled. A few NULLs are added first to ensure
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GDB does not try decoding a non-existent return address. */
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*pxTopOfStack = ( StackType_t ) NULL;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) NULL;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) NULL;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) portINITIAL_SPSR;
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if( ( ( uint32_t ) pxCode & portTHUMB_MODE_ADDRESS ) != 0x00UL )
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{
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/* The task will start in THUMB mode. */
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*pxTopOfStack |= portTHUMB_MODE_BIT;
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}
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if( ( ( uint32_t ) pxCode & portTHUMB_MODE_ADDRESS ) != 0x00UL )
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{
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/* The task will start in THUMB mode. */
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*pxTopOfStack |= portTHUMB_MODE_BIT;
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}
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pxTopOfStack--;
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pxTopOfStack--;
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/* Next the return address, which in this case is the start of the task. */
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*pxTopOfStack = ( StackType_t ) pxCode;
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pxTopOfStack--;
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/* Next the return address, which in this case is the start of the task. */
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*pxTopOfStack = ( StackType_t ) pxCode;
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pxTopOfStack--;
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/* Next all the registers other than the stack pointer. */
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*pxTopOfStack = ( StackType_t ) portTASK_RETURN_ADDRESS; /* R14 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x12121212; /* R12 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x11111111; /* R11 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x10101010; /* R10 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x09090909; /* R9 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x08080808; /* R8 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x07070707; /* R7 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x06060606; /* R6 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x05050505; /* R5 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x04040404; /* R4 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x03030303; /* R3 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x02020202; /* R2 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x01010101; /* R1 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) pvParameters; /* R0 */
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pxTopOfStack--;
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/* Next all the registers other than the stack pointer. */
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*pxTopOfStack = ( StackType_t ) portTASK_RETURN_ADDRESS; /* R14 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x12121212; /* R12 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x11111111; /* R11 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x10101010; /* R10 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x09090909; /* R9 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x08080808; /* R8 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x07070707; /* R7 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x06060606; /* R6 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x05050505; /* R5 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x04040404; /* R4 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x03030303; /* R3 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x02020202; /* R2 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x01010101; /* R1 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) pvParameters; /* R0 */
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pxTopOfStack--;
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/* The task will start with a critical nesting count of 0 as interrupts are
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* enabled. */
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*pxTopOfStack = portNO_CRITICAL_NESTING;
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pxTopOfStack--;
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/* The task will start with a critical nesting count of 0 as interrupts are
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enabled. */
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*pxTopOfStack = portNO_CRITICAL_NESTING;
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pxTopOfStack--;
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/* The task will start without a floating point context. A task that uses
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* the floating point hardware must call vPortTaskUsesFPU() before executing
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* any floating point instructions. */
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*pxTopOfStack = portNO_FLOATING_POINT_CONTEXT;
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/* The task will start without a floating point context. A task that uses
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the floating point hardware must call vPortTaskUsesFPU() before executing
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any floating point instructions. */
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*pxTopOfStack = portNO_FLOATING_POINT_CONTEXT;
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return pxTopOfStack;
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return pxTopOfStack;
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}
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/*-----------------------------------------------------------*/
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static void prvTaskExitError( void )
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{
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/* A function that implements a task must not exit or attempt to return to
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its caller as there is nothing to return to. If a task wants to exit it
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should instead call vTaskDelete( NULL ).
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/* A function that implements a task must not exit or attempt to return to
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* its caller as there is nothing to return to. If a task wants to exit it
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* should instead call vTaskDelete( NULL ).
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*
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* Artificially force an assert() to be triggered if configASSERT() is
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* defined, then stop here so application writers can catch the error. */
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configASSERT( ulPortInterruptNesting == ~0UL );
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portDISABLE_INTERRUPTS();
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Artificially force an assert() to be triggered if configASSERT() is
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defined, then stop here so application writers can catch the error. */
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configASSERT( ulPortInterruptNesting == ~0UL );
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portDISABLE_INTERRUPTS();
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for( ;; );
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for( ; ; )
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{
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}
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}
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/*-----------------------------------------------------------*/
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BaseType_t xPortStartScheduler( void )
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{
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uint32_t ulAPSR;
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uint32_t ulAPSR;
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/* Only continue if the CPU is not in User mode. The CPU must be in a
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Privileged mode for the scheduler to start. */
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__asm volatile ( "MRS %0, APSR" : "=r" ( ulAPSR ) :: "memory" );
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ulAPSR &= portAPSR_MODE_BITS_MASK;
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configASSERT( ulAPSR != portAPSR_USER_MODE );
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/* Only continue if the CPU is not in User mode. The CPU must be in a
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* Privileged mode for the scheduler to start. */
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__asm volatile ( "MRS %0, APSR" : "=r" ( ulAPSR )::"memory" );
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if( ulAPSR != portAPSR_USER_MODE )
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{
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/* Start the timer that generates the tick ISR. */
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portDISABLE_INTERRUPTS();
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configSETUP_TICK_INTERRUPT();
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ulAPSR &= portAPSR_MODE_BITS_MASK;
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configASSERT( ulAPSR != portAPSR_USER_MODE );
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/* Start the first task executing. */
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vPortRestoreTaskContext();
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}
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if( ulAPSR != portAPSR_USER_MODE )
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{
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/* Start the timer that generates the tick ISR. */
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portDISABLE_INTERRUPTS();
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configSETUP_TICK_INTERRUPT();
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/* Will only get here if vTaskStartScheduler() was called with the CPU in
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a non-privileged mode or the binary point register was not set to its lowest
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possible value. prvTaskExitError() is referenced to prevent a compiler
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warning about it being defined but not referenced in the case that the user
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defines their own exit address. */
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( void ) prvTaskExitError;
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return 0;
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/* Start the first task executing. */
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vPortRestoreTaskContext();
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}
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/* Will only get here if vTaskStartScheduler() was called with the CPU in
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* a non-privileged mode or the binary point register was not set to its lowest
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* possible value. prvTaskExitError() is referenced to prevent a compiler
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* warning about it being defined but not referenced in the case that the user
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* defines their own exit address. */
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( void ) prvTaskExitError;
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return 0;
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}
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/*-----------------------------------------------------------*/
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void vPortEndScheduler( void )
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{
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/* Not implemented in ports where there is nothing to return to.
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Artificially force an assert. */
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configASSERT( ulCriticalNesting == 1000UL );
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/* Not implemented in ports where there is nothing to return to.
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* Artificially force an assert. */
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configASSERT( ulCriticalNesting == 1000UL );
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}
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/*-----------------------------------------------------------*/
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void vPortEnterCritical( void )
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{
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portDISABLE_INTERRUPTS();
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portDISABLE_INTERRUPTS();
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/* Now interrupts are disabled ulCriticalNesting can be accessed
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directly. Increment ulCriticalNesting to keep a count of how many times
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portENTER_CRITICAL() has been called. */
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ulCriticalNesting++;
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/* Now interrupts are disabled ulCriticalNesting can be accessed
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* directly. Increment ulCriticalNesting to keep a count of how many times
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* portENTER_CRITICAL() has been called. */
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ulCriticalNesting++;
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/* This is not the interrupt safe version of the enter critical function so
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assert() if it is being called from an interrupt context. Only API
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functions that end in "FromISR" can be used in an interrupt. Only assert if
|
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the critical nesting count is 1 to protect against recursive calls if the
|
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assert function also uses a critical section. */
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if( ulCriticalNesting == 1 )
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{
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configASSERT( ulPortInterruptNesting == 0 );
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}
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/* This is not the interrupt safe version of the enter critical function so
|
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* assert() if it is being called from an interrupt context. Only API
|
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* functions that end in "FromISR" can be used in an interrupt. Only assert if
|
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* the critical nesting count is 1 to protect against recursive calls if the
|
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* assert function also uses a critical section. */
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if( ulCriticalNesting == 1 )
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{
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configASSERT( ulPortInterruptNesting == 0 );
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}
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}
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/*-----------------------------------------------------------*/
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void vPortExitCritical( void )
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{
|
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if( ulCriticalNesting > portNO_CRITICAL_NESTING )
|
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{
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/* Decrement the nesting count as the critical section is being
|
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exited. */
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ulCriticalNesting--;
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if( ulCriticalNesting > portNO_CRITICAL_NESTING )
|
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{
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/* Decrement the nesting count as the critical section is being
|
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* exited. */
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ulCriticalNesting--;
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/* If the nesting level has reached zero then all interrupt
|
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priorities must be re-enabled. */
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if( ulCriticalNesting == portNO_CRITICAL_NESTING )
|
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{
|
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/* Critical nesting has reached zero so all interrupt priorities
|
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should be unmasked. */
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portENABLE_INTERRUPTS();
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}
|
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}
|
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/* If the nesting level has reached zero then all interrupt
|
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* priorities must be re-enabled. */
|
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if( ulCriticalNesting == portNO_CRITICAL_NESTING )
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{
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/* Critical nesting has reached zero so all interrupt priorities
|
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* should be unmasked. */
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portENABLE_INTERRUPTS();
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}
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}
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}
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/*-----------------------------------------------------------*/
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|
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void FreeRTOS_Tick_Handler( void )
|
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{
|
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uint32_t ulInterruptStatus;
|
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uint32_t ulInterruptStatus;
|
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|
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ulInterruptStatus = portSET_INTERRUPT_MASK_FROM_ISR();
|
||||
ulInterruptStatus = portSET_INTERRUPT_MASK_FROM_ISR();
|
||||
|
||||
/* Increment the RTOS tick. */
|
||||
if( xTaskIncrementTick() != pdFALSE )
|
||||
{
|
||||
ulPortYieldRequired = pdTRUE;
|
||||
}
|
||||
/* Increment the RTOS tick. */
|
||||
if( xTaskIncrementTick() != pdFALSE )
|
||||
{
|
||||
ulPortYieldRequired = pdTRUE;
|
||||
}
|
||||
|
||||
portCLEAR_INTERRUPT_MASK_FROM_ISR( ulInterruptStatus );
|
||||
portCLEAR_INTERRUPT_MASK_FROM_ISR( ulInterruptStatus );
|
||||
|
||||
configCLEAR_TICK_INTERRUPT();
|
||||
configCLEAR_TICK_INTERRUPT();
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void vPortTaskUsesFPU( void )
|
||||
{
|
||||
uint32_t ulInitialFPSCR = 0;
|
||||
uint32_t ulInitialFPSCR = 0;
|
||||
|
||||
/* A task is registering the fact that it needs an FPU context. Set the
|
||||
FPU flag (which is saved as part of the task context). */
|
||||
ulPortTaskHasFPUContext = pdTRUE;
|
||||
/* A task is registering the fact that it needs an FPU context. Set the
|
||||
* FPU flag (which is saved as part of the task context). */
|
||||
ulPortTaskHasFPUContext = pdTRUE;
|
||||
|
||||
/* Initialise the floating point status register. */
|
||||
__asm volatile ( "FMXR FPSCR, %0" :: "r" (ulInitialFPSCR) : "memory" );
|
||||
/* Initialise the floating point status register. */
|
||||
__asm volatile ( "FMXR FPSCR, %0" ::"r" ( ulInitialFPSCR ) : "memory" );
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue