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Old Version 19

changes.mady.by.user Kito Cheng

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New Version 20

changes.mady.by.user Christoph Müllner

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Extension / featureRatified?

HW exists

(see also here)?

FPGA exists?SpikeQemuBinutilsGCCglibcnewlibLLVMOpenSBILinuxGDB
RV32I v2.1ye.g. LowFivee.g. Rocketmainlinemainlinemainlinemainlinemainlinemainlinemainlinemainlinemainline
RV64I v2.1ye.g. BeagleVe.g. Rocketmainlinemainlinemainlinemainlinemainlinemainlinemainlinemainlinemainline
Big-endian supporty

mainline

mainline





RV32E v1.9n




mainline

not supported
not supported
M (Multiplication and Division) v2.0ye.g. BeagleVe.g. Rocketmainlinemainlinemainlinemainlinen/an/amainlinen/an/a
A (Atomic) v2.1ye.g. BeagleVe.g. Rocketmainlinemainlinemainlinemainlinen/an/amainlinemainline (atomics)mainline (atomics)
F (SP float) v2.2ye.g. BeagleVe.g. Rocketmainlinemainline







D (DP float) v2.2y

mainlinemainline







RVWMO v2.0ye.g. BeagleVe.g. Rocketmainline (emulation is seq. consistent)mainline (emulation is seq. consistent)n/an/an/an/an/amainline (barriers and locks)mainline (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, lp64qilp32, ilp32f, ilp32d, ilp32e, lp64, lp64f, lp64dilp32, ilp32d, lp64, lp64dilp32, ilp32f, ilp32d, ilp32e, lp64, lp64f, lp64dilp32, ilp32d, lp64, lp64dn/an/a
C (compressed) v2.0y
e.g. EH2mainlinemainlinemainlinemainlinen/an/amainline


Q (QP float) v2.2y



mainline






Zifencei v2.0y
e.g. EH2mainlinemainlinemainline




mainline
Zihintpause v1.0




mainline






Zicsr v2.0y
e.g. EH2mainlinemainlinemainline




mainline
Counters v2.0n

mainlinemainline
n/an/an/a
mainlinemainline
Machine ISA v1.11 (CSRs, ECALL, EBREAK, MRET/SRET/URET, WFI, Reset, NMIs, PMAs, PMP)y

mainlinemainline





n/a
Supervisor ISA v1.11 (CSRs, SFENCE.VMA, Sv32/Sv39/Sv48)y

mainlinemainline




n/a

B (bitmanip) v0.92 (Zba, Zbb, Zbc, Zbe, Zbf, Zbk, Zbp, Zbr, Zbs)n

e.g. PR for Rocket,

EH2 (Zba, Zbb, Zbc, Zbe, Zbf, Zbp, Zbr, Zbs)


Mailpatch (Zba, Zbb, Zbs, Zbp)

PRdev branch





K (scalar crypto)n



PRPR





P (SIMD) v0.9.4n

mainline (but v0.9.2!)
PRPR





V (vector) v0.10, Vector Extension Intrinsics, Vector Calling Conventionn

z.B. Allwinner D1

(but v0.7.1)


mainlinemainline (but v0.7.1)



mainline (Zvlsseg API not settled, FP16 ABI not settled)


Ztso v0.1n











Zam v0.1n











H (hypervisor) v0.6.1n
e.g. Rocketmainlinemainlinedev branchn/an/an/a
mainlineKVM patches on LKML
Zmmul v0.1 (subset of M)












J (JIT/Java)












TEE












Snavpotn











Zfinxn

staging branchstaging branchstaging branchstaging-branch

PR


Z*inx (with new ABIs: ILP32X/ILP64X)




dev: PLCTdev: PLCT





SV57












Zce




dev: PLCTdev: PLCT





CMO / Zicmobasen











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)

...