SPI read write for 32bits data

Sorry I do not have access to the SPI_Read() function. Just asking anyone can help with the 2 functions I need to read and write to my ICs

unsigned long SPI_read(unsigned long Address)

and

void SPI_write(unsigned long Comd)

I dont know what to put inside to this 2 functions so that I can use the SPI.transfer to let my program works. I hope all expert can help me here. Thanks a lot