os_cpu_c.c

UCOS_II移植的（MEGA16,CVAVR）

#define  OS_CPU_GLOBALS

#include "uCOS_II.H"

OS_STK *OSTaskStkInit (void (*task)(void *pd), void *pdata, OS_STK *ptos, INT16U opt)
{
    OS_STK *pSoftStk, *pHardStk;
    INT16U tmp; 
    
    opt = opt;                          
    pSoftStk = (INT8U *)ptos;
    pHardStk = (INT8U *)(ptos - OS_TASK_STK_SIZE + OS_TASK_HARD_STK_SIZE);
     
    tmp = (INT16U) task; //get function address
    *pHardStk -- = (INT8U)tmp;
    *pHardStk -- = (INT8U)(tmp >> 8);
      
    *pSoftStk -- = (INT8U)0x00;
    *pSoftStk -- = (INT8U)0x01;
    *pSoftStk -- = (INT8U)0x02;
    *pSoftStk -- = (INT8U)0x03;
    *pSoftStk -- = (INT8U)0x04;
    *pSoftStk -- = (INT8U)0x05;
    *pSoftStk -- = (INT8U)0x06;
    *pSoftStk -- = (INT8U)0x07;
    *pSoftStk -- = (INT8U)0x08;
    *pSoftStk -- = (INT8U)0x09;
    *pSoftStk -- = (INT8U)0x10;
    *pSoftStk -- = (INT8U)0x11;
    *pSoftStk -- = (INT8U)0x12;
    *pSoftStk -- = (INT8U)0x13;
    *pSoftStk -- = (INT8U)tmp; //0x14;
    *pSoftStk -- = (INT8U)(tmp >> 8); //0x15
    
    tmp = (INT16U)pdata; //get parameter address, because parameter type is undef
    
    *pSoftStk -- = (INT8U)tmp; //0x16;
    *pSoftStk -- = (INT8U)(tmp >> 8); //0x17;
    *pSoftStk -- = (INT8U)0x18;
    *pSoftStk -- = (INT8U)0x19;
    *pSoftStk -- = (INT8U)0x20;
    *pSoftStk -- = (INT8U)0x21;
    *pSoftStk -- = (INT8U)0x22;
    *pSoftStk -- = (INT8U)0x23;
    *pSoftStk -- = (INT8U)0x24;
    *pSoftStk -- = (INT8U)0x25;
    *pSoftStk -- = (INT8U)0x26;
    *pSoftStk -- = (INT8U)0x27;
    *pSoftStk -- = (INT8U)0x30;
    *pSoftStk -- = (INT8U)0x31;
       
    *pSoftStk -- = (INT8U)0x80; //enable interrupt//sreg
    
    tmp = (INT16U)pHardStk;
	  *pSoftStk-- = (INT8U)(tmp >> 8);     // SPH   
    *pSoftStk   = (INT8U) tmp;         // SPL
    
    return ((void *)pSoftStk);
}

#if OS_CPU_HOOKS_EN

#if OS_VERSION > 203
void OSInitHookBegin (void)
{
}
#endif

#if OS_VERSION > 203
void OSInitHookEnd (void)
{
}
#endif

void OSTaskCreateHook (OS_TCB *ptcb)
{
    ptcb = ptcb;                       /* Prevent compiler warning                                     */
}

void OSTaskDelHook (OS_TCB *ptcb)
{
    ptcb = ptcb;                       /* Prevent compiler warning                                     */
}

void OSTaskSwHook (void)
{
}

void OSTaskStatHook (void)
{
}

#if OS_VERSION > 203
void OSTCBInitHook (OS_TCB *ptcb)
{
    ptcb = ptcb;                                           /* Prevent Compiler warning                 */
}
#endif

void OSTimeTickHook (void)
{
}

#if OS_VERSION >= 251
void OSTaskIdleHook (void)
{
}
#endif

#endif