RISC-V International
Page History
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| Extension / feature | Ratified? | HW exists (see also here)? | FPGA exists? | Spike | Qemu | Binutils | GCC | glibc | newlib | LLVM | OpenSBI | FreeBSD | Linux | GDB |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RV32I v2.1 | y | e.g. LowFive | e.g. Rocket | mainlineupstreammainline | upstream | mainlineupstreammainline | upstream | mainlineupstreammainline | upstream | mainlineupstream | mainlineupstream | not supported | mainlineupstream | |
| RV64I v2.1 | y | e.g. BeagleV | e.g. Rocket | mainlineupstreammainline | upstream | mainlineupstreammainline | upstream | mainlineupstreammainline | upstream | mainlineupstream | mainlineupstreammainline | upstream | mainlineupstream | |
| Big-endian support | y | mainlineupstreammainline | upstream | not supported | ||||||||||
| RV32E v1.9 | n | mainlineupstream | not supported | not supported | not supported | |||||||||
| M (Multiplication and Division) v2.0 | y | e.g. BeagleV | e.g. Rocket | mainlineupstreammainline | upstream | mainlineupstreammainline | upstream | n/a | n/a | mainlineupstream | n/a | n/a | n/a | |
| A (Atomic) v2.1 | y | e.g. BeagleV | e.g. Rocket | mainlineupstreammainline | upstream | mainlineupstreammainline | upstream | n/a | n/a | mainlineupstream | mainline upstream (atomics)mainline | upstream (atomics) | mainline upstream (atomics) | |
| F (SP float) v2.2 | y | e.g. BeagleV | e.g. Rocket | mainlineupstreammainline | upstream | mainlineupstream | ||||||||
| D (DP float) v2.2 | y | mainlineupstreammainline | upstream | mainlineupstream | ||||||||||
| RVWMO v2.0 | y | e.g. BeagleV | e.g. Rocket | mainline upstream (emulation is seq. consistent)mainline | upstream (emulation is seq. consistent) | n/a | n/a | n/a | n/a | n/a | mainline upstream (barriers and locks)mainline | upstream (barriers and locks) | mainline upstream (barriers and locks), but needs optimization | |
| ABIs (ILP32, ILP32E, ILP32F, ILP32D, LP64, LP64f, LP64D, LP64Q) | Documented ABIs | 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 | |||||
| C (compressed) v2.0 | y | e.g. EH2 | mainlineupstreammainline | upstream | mainlineupstreammainline | upstream | n/a | n/a | mainlineupstream | mainlineupstream | ||||
| Q (QP float) v2.2 | y | mainlineupstream | not supported | |||||||||||
| Zifencei v2.0 | y | e.g. EH2 | mainlineupstreammainline | upstream | mainlineupstream | not supported | mainlineupstreammainline | upstream | ||||||
| Zihintpause v1.0 | mainlineupstream | not supported | ||||||||||||
| Zicsr v2.0 | y | e.g. EH2 | mainlineupstreammainline | upstream | mainlineupstream | not supported | mainlineupstreammainline | upstream | ||||||
| Counters v2.0 | n | mainlineupstreammainline | upstream | n/a | n/a | n/a | mainlineupstreammainline | upstream | mainlineupstream | |||||
| Machine ISA v1.11 (CSRs, ECALL, EBREAK, MRET/SRET/URET, WFI, Reset, NMIs, PMAs, PMP) | y | mainlineupstreammainline | upstream | n/a | n/a | |||||||||
| Supervisor ISA v1.11 (CSRs, SFENCE.VMA, Sv32/Sv39/Sv48) | y | mainlineupstreammainline | upstream | n/a | ||||||||||
| B (bitmanip) v0.92 (Zba, Zbb, Zbc, Zbe, Zbf, Zbk, Zbp, Zbr, Zbs) | n | e.g. PR for Rocket, | PR | dev branch | mainline upstream (experimental) | |||||||||
| K (scalar crypto) | n | PR | PR | MC layer PR LLVM Intrinsic PR | ||||||||||
| P (SIMD) v0.9.4 | n | mainline upstream (but v0.9.2!) | Mailpatch (v0.9.4) | PR | PR | PR | ||||||||
| V (vector) v0.10, Vector Extension Intrinsics, Vector Calling Convention | n | z.B. Allwinner D1 (but v0.7.1) | mainlineupstream | mainline upstream (but v0.7.1) | mainline upstream (experimental,FP16 ABI not settled) | |||||||||
| Ztso v0.1 | n | not supported | ||||||||||||
| Zam v0.1 | n | not supported | ||||||||||||
| H (hypervisor) v0.6.1 | n | e.g. Rocket (PR) | mainlineupstreammainline | upstream | dev branch | n/a | n/a | n/a | mainlineupstream | 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 | mainlineupstream | |||||||||||||
| SV57 | ||||||||||||||
| Zce | dev: PLCT | dev: PLCT | dev branch | |||||||||||
| CMO / Zicmobase | n |
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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 mainlinedupstreamed
PR...SW support exists in form of a pull request for mainline 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)
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