CTSRD-CHERI / cheri-specification

CHERI ISA Specification
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riscv: Make the scratch SCRs extend the base scratch CSRs. #59

Closed bsdjhb closed 1 year ago

bsdjhb commented 1 year ago

Our current OSs have not used both scratch registers in their exception entry and instead only used the capability register. Thus, there does not seem to be a compelling reason for having two scratch registers per mode vs just one.