tx_adsp.c

ThreadX for BLACKFIN BF561的源码。基于BLACKFIN的处理器。

{
    VOID_PTR  vpSlotVal=TX_NULL;
    TX_THREAD_PTR tx_current_thread_ptr = tx_thread_identify();

    if((inSlotNum > 0) && ( inSlotNum <= TX_ADSP_THREAD_SLOTS))
    {
        vpSlotVal = tx_current_thread_ptr->tx_thread_local_storage.tx_thread_slot[inSlotNum-1];
    }

    return(vpSlotVal);
}


/**************************************************************************/ 
/*                                                                        */ 
/*  FUNCTION                                               RELEASE        */ 
/*                                                                        */ 
/*    SetThreadSlotValue__3VDKFiPv                  BLACKFIN561/VisualDSP */ 
/*                                                           4.0          */ 
/*  AUTHOR                                                                */ 
/*                                                                        */ 
/*    William E. Lamie, Express Logic, Inc.                               */ 
/*                                                                        */ 
/*  DESCRIPTION                                                           */ 
/*                                                                        */ 
/*    This function returns the 32-bit slot in Thread Local Storage.      */ 
/*                                                                        */ 
/*                                                                        */ 
/*  INPUT                                                                 */ 
/*                                                                        */ 
/*    ioSlotNum                             pre-allocated slot #          */ 
/*    inValue                               Value to store in slot        */ 
/*                                                                        */ 
/*  OUTPUT                                                                */ 
/*                                                                        */ 
/*    slot status                            TRUE/FALSE on slot set       */ 
/*                                                                        */ 
/*  CALLS                                                                 */ 
/*                                                                        */ 
/*    _tx_thread_identify                   Identify the current thread   */ 
/*                                                                        */ 
/*  CALLED BY                                                             */ 
/*                                                                        */ 
/*    ADSP libraries                                                      */ 
/*                                                                        */ 
/*  RELEASE HISTORY                                                       */ 
/*                                                                        */ 
/*    DATE              NAME                      DESCRIPTION             */ 
/*                                                                        */ 
/*  07-15-2004     Karl Homer               Initial Version 4.0           */ 
/*                                                                        */ 
/**************************************************************************/ 
BOOL SetThreadSlotValue__3VDKFiPv(INT inSlotNum, VOID_PTR inValue)
{
    TX_THREAD_PTR tx_current_thread_ptr = tx_thread_identify();
    BOOL bStatus=TX_FALSE;

    if((inSlotNum > 0) && (inSlotNum <= TX_ADSP_THREAD_SLOTS))
    {
        tx_current_thread_ptr->tx_thread_local_storage.tx_thread_slot[inSlotNum-1] = inValue;
        bStatus = TX_TRUE;
    }

    return(bStatus);
}


/**************************************************************************/ 
/*                                                                        */ 
/*  FUNCTION                                               RELEASE        */ 
/*                                                                        */ 
/*    PushUnscheduledRegion__3VDKFv                 BLACKFIN561/VisualDSP */ 
/*                                                           4.0          */ 
/*  AUTHOR                                                                */ 
/*                                                                        */ 
/*    William E. Lamie, Express Logic, Inc.                               */ 
/*                                                                        */ 
/*  DESCRIPTION                                                           */ 
/*                                                                        */ 
/*    This function notifies Threadx that a critical/non-reentrant        */ 
/*    code section is about to be entered.                                */ 
/*                                                                        */ 
/*                                                                        */ 
/*  INPUT                                                                 */ 
/*                                                                        */ 
/*                                                                        */ 
/*  OUTPUT                                                                */ 
/*                                                                        */ 
/*                                                                        */ 
/*  CALLS                                                                 */ 
/*                                                                        */ 
/*    tx_mutex_create                       Create the ADSP library       */ 
/*                                            mutex.                      */ 
/*    tx_mutex_get                          Acquire the ADSP library      */ 
/*                                            mutex.                      */ 
/*                                                                        */ 
/*  CALLED BY                                                             */ 
/*                                                                        */ 
/*    ADSP libraries                                                      */ 
/*                                                                        */ 
/*  RELEASE HISTORY                                                       */ 
/*                                                                        */ 
/*    DATE              NAME                      DESCRIPTION             */ 
/*                                                                        */ 
/*  07-15-2004     Karl Homer               Initial Version 4.0           */ 
/*                                                                        */ 
/**************************************************************************/ 
VOID PushUnscheduledRegion__3VDKFv(VOID)
{
    UINT mutex_status;

    if( tx_adsp_mutex.tx_mutex_id ==  TX_MUTEX_ID)
        mutex_status = tx_mutex_get(&tx_adsp_mutex, TX_WAIT_FOREVER);
    else
    {
        mutex_status = tx_mutex_create(&tx_adsp_mutex,"ADSP library mutex", TX_NO_INHERIT);
        if(mutex_status == TX_SUCCESS)
            mutex_status = tx_mutex_get(&tx_adsp_mutex, TX_WAIT_FOREVER);
    }


}


/**************************************************************************/ 
/*                                                                        */ 
/*  FUNCTION                                               RELEASE        */ 
/*                                                                        */ 
/*    PopUnscheduledRegion__3VDKFv                  BLACKFIN561/VisualDSP */ 
/*                                                           4.0          */ 
/*  AUTHOR                                                                */ 
/*                                                                        */ 
/*    William E. Lamie, Express Logic, Inc.                               */ 
/*                                                                        */ 
/*  DESCRIPTION                                                           */ 
/*                                                                        */ 
/*    This function notifies Threadx that a critical/non-reentrant        */ 
/*    code section is finished be entered.                                */ 
/*                                                                        */ 
/*                                                                        */ 
/*  INPUT                                                                 */ 
/*                                                                        */ 
/*                                                                        */ 
/*  OUTPUT                                                                */ 
/*                                                                        */ 
/*                                                                        */ 
/*  CALLS                                                                 */ 
/*                                                                        */ 
/*    tx_mutex_put                          Release the ADSP library      */ 
/*                                            mutex.                      */ 
/*                                                                        */ 
/*  CALLED BY                                                             */ 
/*                                                                        */ 
/*    ADSP libraries                                                      */ 
/*                                                                        */ 
/*  RELEASE HISTORY                                                       */ 
/*                                                                        */ 
/*    DATE              NAME                      DESCRIPTION             */ 
/*                                                                        */ 
/*  07-15-2004     Karl Homer               Initial Version 4.0           */ 
/*                                                                        */ 
/**************************************************************************/ 
VOID PopUnscheduledRegion__3VDKFv(VOID)
{
    UINT mutex_status;
    mutex_status = tx_mutex_put(&tx_adsp_mutex);
}

_END_EXTERN_C