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- upstream...SW support has been merged into the main development branch of the corresponding SW project
- staging branch...SW support lives in a staging branch and is not upstreamed
- PR...SW support exists in form of a pull request for upstream (in-review or waiting for ratification)
- n/a...not applicable, not relevant, or not required
- missing...currently no known implementation
- dev:X...feature is in development by X
- empty cells...unknown status (feel free to share your knowledge)
ISA extension naming conventions
This is just a summary of the naming convention as defined in the unpriv specification.
ISA extension description example: RV64I1p0M1p0A1p0F1p0D1p0 or RV32I2_M2_A2 (P extension requires underscore!)
Prefixes:
- Extensions with prefix Z...standard user-level
- Extensions with prefix X...non-standard user-level
- Extensions with prefix S...standard supervisor-level
- Extensions with prefix SX...non-standard supervisor-level
Published specifications (20191213)
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| Extension | Ratified? | Spike | Qemu | Binutils | GCC | glibc | newlib | LLVM | OpenSBI | FreeBSD | Linux | GDB |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ABIs (ILP32, ILP32E, ILP32F, ILP32D, LP64, LP64f, LP64D, LP64Q) | ilp32, ilp32f, ilp32d, ilp32q, ilp32e, lp64, lp64f, lp64d, lp64q | ilp32, ilp32f, ilp32d, ilp32e, lp64, lp64f, lp64d | ilp32, ilp32d, lp64, lp64d | ilp32, ilp32f, ilp32d, ilp32e, lp64, lp64f, lp64d | ilp32, ilp32d, lp64, lp64d | n/a | lp64, lp64d | n/a | ||||
| Zicsr v2.0 | y | upstream | upstream | upstream | not supported | upstream | upstream | |||||
| Counters v2.0 | n | upstream | upstream | n/a | n/a | n/a | upstream | upstream | upstream | |||
| Machine ISA v1.11 (CSRs, ECALL, EBREAK, MRET/SRET/URET, WFI, Reset, NMIs, PMAs, PMP) | y | upstream | upstream | n/a | n/a | |||||||
| Supervisor ISA v1.11 (CSRs, SFENCE.VMA, Sv32/Sv39/Sv48) | y | upstream | upstream | n/a | ||||||||
| B (bitmanip) v0.92 (Zba, Zbb, Zbc, Zbe, Zbf, Zbk, Zbp, Zbr, Zbs) | n | PR | dev branch | upstream (experimental) | ||||||||
| K (scalar crypto) | n | PR | PR | MC layer PR LLVM Intrinsic PR | ||||||||
| P (SIMD) v0.9.4 | n | upstream (but v0.9.2!) | Mailpatch (v0.9.4) | PR | PR | PR | ||||||
| V (vector) v0.10, Vector Extension Intrinsics, Vector Calling Convention | n | upstream | upstream (but v0.7.1) | upstream (experimental,FP16 ABI not settled) | ||||||||
| Ztso v0.1 | n | not supported | ||||||||||
| Zam v0.1 | n | not supported | ||||||||||
| H (hypervisor) v0.6.1 | n | upstream | upstream | dev branch | n/a | n/a | n/a | upstream | KVM patches on LKML | |||
| Zmmul v0.1 (subset of M) | ||||||||||||
| J (JIT/Java) | ||||||||||||
| TEE | ||||||||||||
| Snavpot | n | |||||||||||
| Zfinx | n | staging branch | staging branch | staging branch | staging-branch | PR | ||||||
| Z*inx (with new ABIs: ILP32X/LP64X) | dev: PLCT | dev: PLCT | ||||||||||
| Zfh | upstream | |||||||||||
| SV57 | ||||||||||||
| Zce | dev: PLCT | dev: PLCT | dev branch | |||||||||
| CMO / Zicmobase | n |
upstream...SW support has been merged into the main development branch of the corresponding SW project
staging branch...SW support lives in a staging branch and is not upstreamed
PR...SW support exists in form of a pull request for upstream (in-review or waiting for ratification)
n/a...not applicable, not relevant, or not required
missing...currently no known implementation
dev:X...feature is in development by X
empty cells...unknown status (feel free to share your knowledge)
ISA extension naming conventions
E.g.: RV64I1p0M1p0A1p0F1p0D1p0 or RV32I2_M2_A2 (P extension requires underscore!)
The complete ISA extension naming convention can be found in the unpriv specification.
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