Page History

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Extension	Spike	Qemu	Binutils	GCC	glibc	newlib	LLVM	OpenSBI	FreeBSD	Linux kernel	GDB
RV32I	upstream	upstream	upstream	upstream	upstream	upstream	upstream	upstream	not supported	upstream	upstream
RV64I	upstream	upstream	upstream	upstream	upstream	upstream	upstream	upstream	upstream	upstream	upstream
Big-endian support	upstream			upstream			not supported		not supported		upstream
M (Multiplication and Division)	upstream	upstream	upstream	upstream	n/a	n/a	upstream	n/a	n/a	n/a	upstream
A (Atomic)	upstream	upstream	upstream	upstream	n/a	n/a	upstream	upstream (atomics)	upstream (atomics)	upstream (atomics)	upstream
F (SP float)	upstream	upstream					upstream		upstream		upstream
D (DP float)	upstream	upstream					upstream		upstream		upstream
Q (QP float)			upstream				not supported		not supported		upstream
RVWMO	upstream (emulation is seq. consistent)	upstream (emulation is seq. consistent)	n/a	n/a	n/a	n/a	n/a	upstream (barriers and locks)	upstream (barriers and locks)	upstream (barriers and locks), but needs optimization	upstream
C (compressed)	upstream	upstream	upstream	upstream	n/a	n/a	upstream		upstream
Zifencei	upstream	upstream	upstream				not supported		upstream	upstream
Machine ISA: CSRs									n/a
Machine ISA: ECALL, EBREAK									upstream
Machine ISA: MRET/SRET/URET									n/a
Machine ISA: WFI									upstream
Machine ISA: PMP									n/a
Supervisor ISA: CSRs									upstream
Supervisor ISA: SFENCE.VMA									upstream
Supervisor ISA: Sv32, Sv39, Sv48									Sv39 upstream

Unpublished ratified extensions

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Extension	Spike	Qemu	Binutils	GCC	glibc	newlib	LLVM	OpenSBI	FreeBSD	Linux kernel
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)	not supported
Bitmanip: Zba, Zbb, Zbc, Zbs	n		Mailpatch (Zba, Zbb, Zbs, Zbp)	PR	dev branch			upstream (experimental)	not used
FP in INT regs: Zfinx	staging branch	staging branch	staging branch	staging-branch			PR		not supported
Half Width FP: Zfh, Zfhmin							upstream		not supported
ePMP: Smepmp									not supported
Scalar crypto: Zbkb, Zbkc, Zbkx, Zknd, Zkne, Zknh, Zksed, Zksh, Zkn, Zks, Zkt, Zk, Zkr			PR	PR			MC layer PR LLVM Intrinsic PR		not used
Priv 1.12: Sm1-12, Ss1-12, Sv57									not supported
CMO base: Zicbom, Zicbop, Zicboz									not supported
Hypervisor: H	upstream	upstream	dev branch	n/a	n/a	n/a		upstream	not supported	KVM patches on LKML
State Enable: Smstateen									not supported
Time compare: Sstc									not supported
Counter overflow and filtering: Sscofmpf									not supported
Fast TLP invalidation: Svinval									not supported
NAPOT pages: Svnapot									not supported
Page-based memory types: Svpbmt									not supported
Code Size Reduction: Zcee									not supported
Packed SIMD: Zpn, Zpsfoperand, Zprvsfextra									not supported
Resumable Non-maskable Interrupts: Smrnmi									not supported
Core-local Interrupt Controller: CLINT									upstream
Advanced Core-local Interrupt Controller: ACLINT									not supported
Zmmul									n/a
Pointer masking: Zjpm									not supported

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