ORR	$0x170000, R2, R1                   // ORR	$1507328, R2, R1                // fb02a0d241001baa
	AND	$0xff00ff, R2                       // AND	$16711935, R2                   // fb1f80d2fb1fa0f242001b8a
	AND	$0xff00ffff, R1                     // AND	$4278255615, R1                 // fbff9fd21be0bff221001b8a
	ANDS	$0xffff, R2                         // ANDS	$65535, R2                      // 423c40f2

        try {
            System.arraycopy(this.sbuf, 0, buffer, 0, 4 + SMB1_HEADER_LENGTH);
            int size = ( Encdec.dec_uint16be(buffer, 2) & 0xFFFF );
            if ( size < ( SMB1_HEADER_LENGTH + 1 ) || ( 4 + size ) > Math.min(0xFFFF, getContext().getConfig().getMaximumBufferSize()) ) {
                throw new IOException("Invalid payload size: " + size);
            }