RISC-V International
Page History
...
An overview of the current status of unratified extensions can be found here: Opcode and State Review
| Extension / feature | Ratified? | Spike | Qemu | Binutils | GCC | glibc | newlib | LLVM | OpenSBI | Linux | GDB |
|---|---|---|---|---|---|---|---|---|---|---|---|
| RV32I v2.1 | y | mainline | mainline | mainline | mainline | mainline | mainline | mainline | mainline | mainline | |
| RV64I v2.1 | y | mainline | mainline | mainline | mainline | mainline | mainline | mainline | mainline | mainline | |
| Big-endian support | y | mainline | mainline | ||||||||
| RV32E v1.9 | n | mainline | not supported | not supported | |||||||
| M (Multiplication and Division) v2.0 | y | mainline | mainline | mainline | mainline | n/a | n/a | mainline | n/a | n/a | |
| A (Atomic) v2.1 | y | mainline | mainline | mainline | mainline | n/a | n/a | mainline | mainline (atomics) | mainline (atomics) | |
| F (SP float) v2.2 | y | mainline | mainline | ||||||||
| D (DP float) v2.2 | y | mainline | mainline | ||||||||
| RVWMO v2.0 | y | mainline (emulation is seq. consistent) | mainline (emulation is seq. consistent) | n/a | n/a | n/a | n/a | n/a | mainline (barriers and locks) | mainline (barriers and locks), but needs optimization | |
| ABIs (ILP32, ILP32E, ILP32F, ILP32D, LP64, LP64f, LP64D, LP64Q) | Documented ABIs | ilp32, ilp32d, lp64, lp64d | ilp32, ilp32d, lp64, lp64d | ilp32, ilp32d, lp64, lp64d | ilp32, ilp32d, lp64, lp64d | n/a | n/a | ||||
| C (compressed) v2.0 | y | mainline | mainline | mainline | mainline | n/a | n/a | mainline | |||
| Q (QP float) v2.2 | y | ||||||||||
| Zifencei v2.0 | y | mainline | mainline | mainline | mainline | ||||||
| Zihintpause v1.0 | |||||||||||
| Zicsr v2.0 | y | mainline | mainline | mainline | mainline | ||||||
| Counters v2.0 | n | mainline | mainline | n/a | n/a | n/a | mainline | mainline | |||
| Machine ISA v1.11 (CSRs, ECALL, EBREAK, MRET/SRET/URET, WFI, Reset, NMIs, PMAs, PMP) | y | mainline | mainline | n/a | |||||||
| Supervisor ISA v1.11 (CSRs, SFENCE.VMA, Sv32/Sv39/Sv48) | y | mainline | mainline | n/a | |||||||
| B (bitmanip) v0.92 (Zba, Zbb, Zbc, Zbk, Zbs) | n | PR | |||||||||
| K (scalar crypto) | n | PR | PR | ||||||||
| P (SIMD) v0.9.4 | n | mainline (but v0.9.2!) | PR | PR | |||||||
| V (vector) v0.10, Vector Extension Intrinsics, Vector Calling Convention | n | mainline | mainline (but v0.7.1) | mainline (Zvlsseg API not settled, FP16 ABI not settled) | |||||||
| Ztso v0.1 | n | ||||||||||
| Zam v0.1 | n | ||||||||||
| H (hypervisor) v0.6.1 | |||||||||||
| 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/ILP64X) | dev: PLCT | dev: PLCT | |||||||||
| SV57 | |||||||||||
| Zce | dev: PLCT | dev: PLCT |
mainline...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 mainlined
PR...SW support exists in form of a pull request for mainline (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)
...
Overview
Content Tools