riscv: add CSR-defining macros

Adds helper macros for defining CSR types.

Author: rmsyn

riscv/src/lib.rs

@@ -36,7 +36,7 @@
 #![allow(clippy::missing_safety_doc)]
 
 pub mod asm;
-pub(crate) mod bits;
+pub mod bits;
 pub mod delay;
 pub mod interrupt;
 pub mod register;

riscv/src/register.rs

@@ -107,6 +107,9 @@ pub mod minstreth;
 mod mhpmeventx;
 pub use self::mhpmeventx::*;
 
+#[cfg(test)]
+mod tests;
+
 // TODO: Debug/Trace Registers (shared with Debug Mode)
 
 // TODO: Debug Mode Registers