does anyone who is more knowledgeable in RISC-V have an idea why this processor I have flashed is stuck on the third instruction?
```console
grmon4> step
  0x00000000: 000000b7  lui     ra, 0x0

grmon4> step
  0x00000004: 00808067  jalr    zero, 8(ra)

grmon4> step
  0x00000008: 00000513  li      a0, 0  <_abs_start+0>
```

it just loads 0 into register a0. really nothing that should go wrong, but it seems to be stuck on that instruction..