os_cpu_c.c

来自「ucos v2.62 安装程序 附带已移植到C8051F020的UCOS源码」· C语言 代码 · 共 78 行

#ifndef  OS_MASTER_FILE
#include "includes.h"
#endif

OS_STK *OSTaskStkInit(void(*task)(void *pd),void* ppdata,OS_STK *ptos,INT16U opt) KCREENTRANT	
{
	OS_STK *stk;

    ppdata = ppdata;
    opt    = opt;                               //opt没被用到，保留此语句防止告警产生    
    stk    = (OS_STK *)ptos;                    //用户堆栈最低有效地址
    *stk++ = 15;                                //用户堆栈长度
    *stk++ = (INT16U)task & 0xFF;               //任务地址低8位
    *stk++ = (INT16U)task >> 8;                 //任务地址高8位    
    *stk++ = 0x00;                              //PSW
    *stk++ = 0x0A;                              //ACC
    *stk++ = 0x0B;                              //B
    *stk++ = 0x00;                              //DPL
    *stk++ = 0x00;                              //DPH
    *stk++ = 0x00;                              //R0
    *stk++ = 0x01;                              //R1
    *stk++ = 0x02;                              //R2
    *stk++ = 0x03;                              //R3
    *stk++ = 0x04;                              //R4
    *stk++ = 0x05;                              //R5
    *stk++ = 0x06;                              //R6
    *stk++ = 0x07;                              //R7
                                                //不用保存SP，任务切换时根据用户堆栈长度计算得出。    
   *stk++ = (INT16U) (ptos+MaxStkSize) >> 8;   //?C_XBP 仿真堆栈指针高8位
   *stk++ = (INT16U) (ptos+MaxStkSize) & 0xFF; //?C_XBP 仿真堆栈指针低8位
	return ((OS_STK *)ptos);
}


void OSTaskCreateHook(OS_TCB *ptcb)	KCREENTRANT	 
{
    ptcb = ptcb;
}

void OSTaskDelHook(OS_TCB *ptcb) KCREENTRANT	  
{
    ptcb = ptcb;
}

void OSTaskSwHook(void) KCREENTRANT  
{

}

void OSTaskIdleHook(void) KCREENTRANT	 
{

}
void OSTaskStatHook(void)  KCREENTRANT	
{

}

void OSTimeTickHook(void) KCREENTRANT	 
{

}

void OSInitHookBegin(void)KCREENTRANT		  
{

}
 
void OSInitHookEnd(void) KCREENTRANT	 
{

}

void OSTCBInitHook(OS_TCB *ptcb) KCREENTRANT	 
{
  ptcb = ptcb;
}