need SPI interface coding in C (for 8051)

#define uchar	unsigned char

sbit RF_MISO	= P2^3;  //say
sbit RF_MOSI	= P2^2;
sbit RF_SCK	= P2^1;
sbit RF_CSN	= P2^0;
...

void   spiWr(uchar);
uchar spiRd(void);

...

/*
*********************************************************************************************************
* Low level SPI WRITE FUNCTION
*********************************************************************************************************
*/
void spiWr(uchar dat)
{
		/* software SPI, send MSB first */
	static uchar i,c;

	c = dat;
	for(i=0;i<8;i++)
	{
	if((c&0x80)==0x80)
		RF_MOSI = 1;
	else
		RF_MOSI = 0;

	RF_SCK = 1;
	c=c<<1;
	RF_SCK = 0;
	}
}

/*
*********************************************************************************************************
* Low level SPI READ FUNCTION
*********************************************************************************************************
*/
uchar spiRd(void)
{
	/* software SPI read, MSB read first */
	static uchar i, dat;

	for(i=0;i<8;i++)
	{
		dat = dat<<1;
		RF_SCK = 1;
		if(RF_MISO)
			dat = dat+1;
		RF_SCK = 0;
	}
	
	return dat;
}

       ORL SSCMODE,#$80  ; set LOOPB to 1
       MOV STB,#$5A      ; send $5A to SPI output
Wait:       
       MOV A,SCF         ; SSC Status Register
       JNB A.0,Wait      ; wait until Transfer completed
       MOV A,SRB         ; receive $5A on Receive Buffer Register