Zvamo (draft) Instructions

14 RISC-V instructions in this extension - click any row for encoding, pseudocode, and full documentation.

Mnemonic ⇅	Syntax	Format ⇅	Summary
VAMOADDD.V	VAMOADDD.V vd, (rs1), vs2, vm	VAMO	Atomically adds elements from vs2 to memory addresses (64-bit).
VAMOADDW.V	VAMOADDW.V vd, (rs1), vs2, vm	VAMO	Atomically adds elements from vs2 to memory addresses in rs1 (indexed by vs2? No, rs1 is base, vs2 is index).
VAMOANDD.V	VAMOANDD.V vd, (rs1), vs2, vm	VAMO	Atomically ANDs elements (64-bit).
VAMOANDW.V	VAMOANDW.V vd, (rs1), vs2, vm	VAMO	Atomically ANDs elements.
VAMOMAXD.V	VAMOMAXD.V vd, (rs1), vs2, vm	VAMO	Atomic Max (Signed, 64-bit).
VAMOMAXU.V	VAMOMAXU.V vd, (rs1), vs2, vm	VAMO	Atomic Max (Unsigned, Width implicit).
VAMOMAXW.V	VAMOMAXW.V vd, (rs1), vs2, vm	VAMO	Atomic Max (Signed).
VAMOMIND.V	VAMOMIND.V vd, (rs1), vs2, vm	VAMO	Atomic Min (Signed, 64-bit).
VAMOMINU.V	VAMOMINU.V vd, (rs1), vs2, vm	VAMO	Atomic Min (Unsigned, Width implicit).
VAMOMINW.V	VAMOMINW.V vd, (rs1), vs2, vm	VAMO	Atomic Min (Signed).
VAMOORD.V	VAMOORD.V vd, (rs1), vs2, vm	VAMO	Atomically ORs elements (64-bit).
VAMOORW.V	VAMOORW.V vd, (rs1), vs2, vm	VAMO	Atomically ORs elements.
VAMOXORD.V	VAMOXORD.V vd, (rs1), vs2, vm	VAMO	Atomically XORs elements (64-bit).
VAMOXORW.V	VAMOXORW.V vd, (rs1), vs2, vm	VAMO	Atomically XORs elements.