sip register set / clear functions

[PitiBouchon]

There are many functions for the sie register to set and clear bits but nothing for the sip register which can only be read
I don't know why but it would be super useful (for example if you want to clear the STIP bit to acknowledge a supervisor timer interrupt

[romancardenas]

I'll check this in depth, but I'm 99% sure that usually you don't clear the interrupt pending flags directly from the sip register. Instead, you interface the interrupt controller of your particular target (e.g., CLINT, PLIC, ...).

[romancardenas]

Hmm, it seems weird to me that mip allows you to clear/set the interrupt pending bits whereas sip does not... @rust-embedded/riscv any insights about this difference?

[PitiBouchon]

I'll check this in depth, but I'm 99% sure that usually you don't clear the interrupt pending flags directly from the sip register. Instead, you interface the interrupt controller of your particular target (e.g., CLINT, PLIC, ...).

Okay thx, I misunderstood something

[romancardenas]

No problem! Check this old issue, maybe it helps you with your use case :)