Extension Roadmap

This page lists extensions and other features that are not yet supported. See the README for supported extensions.

RVA23 Profile Extensions

The following extensions are included in the RVA23 Profile but have not yet been merged into the RISC-V Sail Model

Mandatory Extensions

Unprivileged Extensions

Extension	Status	Developer	PR/Issue
Zic64b	Just an architectural option, not really an extension. Support will be added with config system.
Zicbop	Just hints. Assembly will be added with module system.	MingZhu Yan	#538
Zihintntl	Just hints. Assembly will be added with module system.	Jordan Carlin
Zihintpause	Just hints. Assembly will be added with module system.	Jordan Carlin
Zvfhmin	PR in Review. Just needs config flag.	Wenyu Huang	#785

Privileged Extensions

Extension	Status	Developer	PR/Issue
H/Sha	PR in Review	Prashanth Mundkur, Lowie Deferme	#612
Sm1p13
Ss1p13
Ssnpm	PR in Review	HAMZA-AFZAL404, Nadime Barhoumi	#969
Supm	PR in Review	HAMZA-AFZAL404, Nadime Barhoumi	#969
Ssstateen	PR in Review	Nadime Barhoumi, MingZhu Yan	#910
Svade	PR in Review	MingZhu Yan	#725
Svnapot	PR in Review	Ved Shanbhogue	#393
Svpbmt	PR in Review	Ved Shanbhogue	#393

Optional Extensions

Unprivileged Extensions

Extension	Status	Developer	PR/Issue
Zicfilp	PR in Review, waiting on module system	Ved Shanbhogue	#361
Zicfiss	PR in Review, waiting on module system	Ved Shanbhogue	#377
Zacas	PR in Review	Ved Shanbhogue	#285
Zama16b	Just an architectural option, not really an extension. Support will be added with config system.
Zfbfmin	Not Started
Zvfbfmin	Not Started
Zvfbfwma	Not Started
Zvfh	PR in Review. Just needs config flag.	Wenyu Huang	#785
Zvkng	See Vector Crypto Extensions	X	X
Zvksg	See Vector Crypto Extensions	X	X

Privileged Extensions

Extension	Status	Developer	PR/Issue
Sdtrig	PR in Review	Yazan Hussnain	#573
Sspm	PR in Review	HAMZA-AFZAL404, Nadime Barhoumi	#969
Ssstrict	Always enabled in current implementation. Add config option.
Svadu	PR in Review	MingZhu Yan	#725

Other Unprivileged Extensions

Vector Crypto Extensions

Extension	Status	Developer	PR/Issue
Zvksed	PR in Review	Nadime Barhoumi	#848
Zvkn	Zvkned + Zvknhb + Zvkb + Zvkt	x	x
Zvknc	Zvkn + Zvbc	x	x
Zvkng	Zvkn + Zvkg	x	x
Zvks	Zvksed + Zvksh + Zvkb + Zvkt	x	x
Zvksc	Zvks + Zvbc	x	x
Zvksg	Zvks + Zvkg	x	x
Zvkt	Probably not relevant to the Sail model

Miscellaneous

Extension	Status	Developer	PR/Issue
E	Needs new Sail Release	Nathaniel Wesley Filardo	#646
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
Zhinxmin	PR in Review	Jordan Carlin	#753

Other Privileged Extensions

Machine Mode

Extension	Status	Developer	PR/Issue
Sm1p12
Smaia
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
Smstateen	PR in Review	Nadime Barhoumi, MingZhu Yan	#910

Supervisor Mode

Extension	Status	Developer	PR/Issue
Ss1p12
Ssaia
Ssccfg	PR in Review	Andrew de los Reyes	#396
Sscsrind	PR in Review	Ved Shanbhogue, @KotorinMinami	#956
Ssdbltrp	PR in Review	Ved Shanbhogue	#416
Ssqosid	PR in Review	Ved Shanbhogue	#379

Debug Mode/Other

Extension	Status	Developer	PR/Issue
Sdext	Developing	Prashanth Mundkur	#954

Other Features (Not Extension Specific)

Feature	Status	Developer	PR/Issue
Big Endian	PR in Review	Muhammad Hammad Bashir	#751
Mutable XLEN
PMAs	PR in Review	Tim Hutt	#866