Re: [PATCH v5 1/8] Additional requirements for H-extension
Jonathan Behrens <behrensj@...>
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+** When an illegal instruction trap is taken into S-mode, exception-specific
+ non-zere value must be written to the `stval` CSR.
nit: When the illegal instruction is c.unimp (encoded as 0x0000) then the exception specific value is zero, and there is no compliant way to write a non-zero value.
On Wed, Aug 11, 2021 at 1:10 AM Anup Patel via lists.riscv.org <anup.patel=wdc.com@...> wrote:
To have a meaningful H-extension support, both OS/A-base and