ssize_t myread()

static  ssize_t myread(struct file*file,char *data,size_t count,loff_t *offp){
        
        if(filp->f_flags &O_NONBLOCK)
        return -EAGAIN;
        int tmp[4];
    tmp[0] =ioread32(aes_slave_reg5_addr) ;//AXI_AES_IP_mReadSlaveReg5(X_BASE,0);
    tmp[1] =ioread32(aes_slave_reg6_addr) ;//AAXI_AES_IP_mReadSlaveReg6(X_BASE,0);
    tmp[2] =ioread32(aes_slave_reg7_addr) ;//AAXI_AES_IP_mReadSlaveReg7(X_BASE,0);
    tmp[3] =ioread32(aes_slave_reg8_addr) ;//AAXI_AES_IP_mReadSlaveReg8(X_BASE,0);
    //xil_printf("%08x %08x %08x %08x\r\n",tmp[0],tmp[1],tmp[2],tmp[3]);
    data[3] = tmp[0] >> 24;
    data[2] = tmp[0] >> 16;
    data[1] = tmp[0] >> 8;
    data[0] = tmp[0];

    data[7] = tmp[1] >> 24;
    data[6] = tmp[1] >> 16;
    data[5] = tmp[1] >> 8;
    data[4] = tmp[1];

    data[11] = tmp[2] >> 24;
    data[10] = tmp[2] >> 16;
    data[9] = tmp[2] >> 8;
    data[8] = tmp[2];

    data[15] = tmp[3] >> 24;
    data[14] = tmp[3] >> 16;
    data[13] = tmp[3] >> 8;
    data[12] = tmp[3];
    return 0;
        }