Function core::arch::x86::_xsetbv

1.27.0· source [−]

pub unsafe fn _xsetbv(a: u32, val: u64)

This is supported on x86 and target feature xsave only.

Expand description

Copies 64-bits from val to the extended control register (XCR) specified by a.

Currently only XFEATURE_ENABLED_MASK XCR is supported.