Page History

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Extension	Spike	Qemu	Binutils	GCC	glibc	LLVM	OpenSBI	FreeBSD
V (vector): Zvamo, Zvlsseg, Zvediv, Zvqmac, Zve32x, Zve32f, Zve64x, Zve64f, Zve64d, Zvfh, Zve	n	upstream	upstream (but v0.7.1)				upstream (experimental,FP16 ABI not settled)
B (bitmanip): Zba, Zbb, Zbc, Zbe, Zbf, Zbk, Zbp, Zbr, Zbs	n		Mailpatch (Zba, Zbb, Zbs, Zbp)	PR	dev branch		upstream (experimental)
FP in INT regs: Zfinx	staging branch	staging branch	staging branch	staging-branch		PR
Half Width FP: Zfh, Zfhmin						upstream	dev: PLCT	dev: PLCT

Specifications that are at least stable

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Extension	Ratified?	Spike	Qemu	Binutils	GCC	glibc	newlib	LLVM	OpenSBI	FreeBSD	Linux
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
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

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