How can I invoke a RoCC accelerator to execute a program on a FireMarshal system?

[Someone Pu]

In the following configuration (where an additional Tweaks has been added to the FPGA), programs compiled with -specs=htif_nano.specs can run successfully in simulation (sims), but terminate due to an illegal instruction on the FPGA. When this flag is removed, the program hangs in both sims and on the FPGA.

Here's the code：