1. Tech-Privileged
  2. Messages

Re: Quetion about execution environment and platform-specific interrupt controller

Greg Favor
 

On Sun, Nov 20, 2022 at 3:15 AM Oscar Jupp <jupposcar@...> wrote:
Dear architect,
The privileged ISA said:
 “Bits sip.STIP and sie.STIE are the interrupt-pending and interrupt-enable bits for supervisorlevel timer interrupts. If implemented, STIP is read-only in sip, and is set and cleared by the execution environment. 
Bits sip.SSIP and sie.SSIE are the interrupt-pending and interrupt-enable bits for supervisorlevel software interrupts. If implemented, SSIP is writable in sip and may also be set to 1 by a platform-specific interrupt controller.”
What does “execution environment“ refer to in the description of sip.STIP?

See Priv section 1.1 and Unpriv section 1.2 for description.

Greg
Join tech-privileged@lists.riscv.org to automatically receive all group messages.