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Extension Roadmap
Jordan Carlin edited this page Feb 18, 2026
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120 revisions
This page lists extensions and other features that are not yet supported. See the README for supported extensions.
The following extensions are included in the RVA23 Profile but have not yet been merged into the RISC-V Sail Model.
The table shows the PRs for each extension where available. If a developer has been assigned an extension, but no PR is noted, it is likely that work hasn't yet started on that extension.
| Extension | Status | Developer | PR/Issue |
|---|---|---|---|
| Ziccif | PR in review | Ved Shanbhogue | #1245 |
| Ziccrse | Prashanth Mundkur | ||
| Ziccamoa | Prashanth Mundkur | ||
| Zicclsm | PR in review | tongjiacheng | #1468 |
| Extension | Status | Developer | PR/Issue |
|---|---|---|---|
| H/Sha | More detailed status | Mingzhu Yan, Nadime Barhoumi, Lowie Deferme | #612 |
| Sm1p13 | Prashanth Mundkur | ||
| Ss1p13 | Prashanth Mundkur | ||
| Ssnpm | PR in Review | HAMZA-AFZAL404, Nadime Barhoumi | #969 |
| Supm | PR in Review | HAMZA-AFZAL404, Nadime Barhoumi | #969 |
| Svade | PR in Review | MingZhu Yan | #725 |
| Svnapot | PR in Review | Ved Shanbhogue | #393 |
| Svpbmt | PR in Review | Ved Shanbhogue | #393 |
| Ssccptr | Prashanth Mundkur | ||
| Sscounterenw | Prashanth Mundkur |
| Extension | Status | Developer | PR/Issue |
|---|---|---|---|
| Zicfiss | PR in Review | Prashanth Mundkur | #1408 |
| Zama16b | Just an architectural option, not really an extension. Support will be added with config system. |
Prashanth Mundkur | |
| Ziccamoc | Prashanth Mundkur |
| Extension | Status | Developer | PR/Issue |
|---|---|---|---|
| Sdtrig | PR in Review | Yazan Hussnain | #573 |
| Sspm | PR in Review | HAMZA-AFZAL404, Nadime Barhoumi | #969 |
| Ssstrict | PR in Review | Prashanth Mundkur | #1383 |
| Svadu | PR in Review | MingZhu Yan | #725 |
| Svvptc | Prashanth Mundkur |
| Extension | Status | Developer | PR/Issue |
|---|---|---|---|
| Q | PR in Review | Jordan Carlin | #445 |
| Zilsd | PR in Review | Mingzhu Yan | #765 |
| Zclsd | PR in Review | Mingzhu Yan | #765 |
| Zcmp | PR in Review | Nadime Barhoumi | #730 |
| Zcmt | PR in Review | Nadime Barhoumi | #757 |
| Zalasr | PR in Review | Brendan Sweeney | #328 |
| Extension | Status | Developer | PR/Issue |
|---|---|---|---|
| Sm1p12 | Prashanth Mundkur | ||
| Smaia | Prashanth Mundkur | ||
| Smcdeleg | PR in Review | Andrew de los Reyes | #396 |
| Smcsrind | PR in Review | Ved Shanbhogue, @KotorinMinami | #956 |
| Smctr | PR in Review | Ved Shanbhogue | #491 |
| Smdbltrp | PR in Review | Ved Shanbhogue | #416 |
| Smepmp | PR in Review | @KotorinMinami | #601 |
| Smmpm | PR in Review | HAMZA-AFZAL404 | #969 |
| Smnpm | PR in Review | HAMZA-AFZAL404 | #969 |
| Smrnmi | PR in Review | Ved Shanbhogue | #396 |
| Extension | Status | Developer | PR/Issue |
|---|---|---|---|
| Ss1p12 | Prashanth Mundkur | ||
| Ssaia | Prashanth Mundkur | ||
| Ssccfg | PR in Review | Andrew de los Reyes | #396 |
| Sscsrind | PR in Review | Ved Shanbhogue, @KotorinMinami | #956 |
| Ssdbltrp | PR in Review | Ved Shanbhogue | #416 |
| Extension | Status | Developer | PR/Issue |
|---|---|---|---|
| Sdext | PR in Review | Prashanth Mundkur | #954 |
| Feature | Status | Developer | PR/Issue |
|---|---|---|---|
| Big Endian | PR in Review | Muhammad Hammad Bashir | #751 |
| Mutable XLEN | Prashanth Mundkur |
| Feature | Extension Development Stage | Status | Developer | PR/Issue |
|---|---|---|---|---|
| Sspmp & related extensions | Under ARC Review | PR in Review | @Fly0307 | #1457 |
| Zvzip | Under Development | PR in review | Ved Shanbhogue | #1449 |
| Zvdot4a8i | Under Development | PR in review | Nicolas Brunie | #1495 |