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by quesomaster9000
438 days ago
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It's a shame that the `MISA` CSR is in the 'Privileged Architecture' spec, otherwise you could just check bit 21 for 'V', but that appears to only be available in the highest privilege machine-mode. Presumably your OS could trap attempts to read the CSR and allow it, but if not then it's a fatal error and your program shits the bed, otherwise you rely on some OS-specific way of getting that info at runtime. |
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