Page History

...

• Latest Draft Fast Interrupt Specification (v0.9-draft-20220510)

  • issue #235 - change “exception” to “trap” to match priv spec wording.

  • issue #233 - mnxti pseudo-code clarification (added meaning of clic.priv,clic.level,clic.id)

  • issue #225 - bounded time to respond to interrupts

  20221108)

• What's next:

  • 24 outstanding issues.
    • 12 active spec issues.
      • big items: hypervisor, cliccfg reformat proposal
    • 6
  What's next:
  • 41 outstanding issues. 
    • 31 active spec issues.
      • 1 issue (new CSR address) dependent on opcode review
    • 5 issues to track Definition of Done tasks
    • 5 6 issues kept open for future enhancements (post rev1.0)   

Encoding/OpCode consistency review

...

• Regular C function that save/restores all caller-save registers
• Inline handler gcc interrupt attribute to always callee-save every register (save as you go)EABI Task Group - improve interrupt latency by reducing the number of caller-save registers
• psABI Task Group - https://github.com/riscv-non-isa/riscv-elf-psabi-doc
  • https://github.com/riscv-non-isa/riscv-elf-psabi-doc/blob/eabi/eabi.adoc