riscv_zfb

Draft Extension: Zfb

• Status: WITHDRAWN
  (but kept for educational purposes due to its simplicity)
  • Real patch is superseded by Draft Extension: Zfa
• Branch: riscv-zfb
• Tracking PR: #12 (view Pull Request and Diff)
• Mailing List:
  • Not planned for now

Feature Description

This branch implemented early Zfb draft extension from zfb branch of riscv-isa-manual except Zfh related parts.

Since newer draft of Zfb extension requires additional instructions with complex handling and the extension name itself is renamed to Zfa, this branch itself is deprecated.

However, it can be a good example to add instructions to the GNU toolchain. So, this branch is kept for educational purposes (until Zfa is ratified and upstreamed).