`riscv`: support for S-mode

rust-embedded / riscv

Low level access to RISC-V processors

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`riscv`: support for S-mode #165

Closed romancardenas closed 8 months ago

romancardenas commented 9 months ago

(I messed up with previous PR)

This PR solves #114

Now, crate::interrupt has machine and supervisor modules for M and S mode, respectively. A new feature s-mode reexports the content of the appropriate module in crate::interrupt. I also modified how the critical section is implemented depending on whether the s-mode feature has been selected.

romancardenas commented 8 months ago

ping @rust-embedded/riscv