Support ArchRISCV32

[agicquel]

Description

ArchRISCV64 is currently supported but ArchRISCV32 is missing. This causes error when analysing RISC32 binaries with angr (such as capstone object returning error instead of the dissembled instructions).

Alternatives

I may implement this feature. Is there any documentation about contribution guidelines or some info I should know?

Additional context

No response

[twizmwazin]

If working with Pcode, you can use ArchPcode

[agicquel]

Have you an example using ArchPcode? It would be used by default if the architecture is not supported.

[twizmwazin]

You create the arch like this and then manually pass it: https://github.com/angr/angr/blob/e1850c3177c5b63bc2b36558c7dc23d7bc87fb5e/tests/engines/pcode/test_pcode.py#L44. These are the same languages used in ghidra, which is a convenient way to get the correct language id. angr defaults to using the Pcode engine in that case.

[agicquel]

Thanks for these info. It would still be useful to have the ArchRISCV32 support. I'll try to implement this in the next weeks.