_xsetbv
Classification
Other, OS-Targeted, CPUID Test: XSAVE
Header File
Instruction
XSETBV
Synopsis
_xsetbv(unsigned int a, unsigned __int64 val);
Description
Copy 64-bits from "val" to the extended control register (XCR) specified by "a". Currently only XFEATURE_ENABLED_MASK XCR is supported.
Operation
XCR[a] := val[63:0]