arch:: x86_64:: _xsave64
pub unsafe fn _xsave64(mem_addr: *mut u8, save_mask: u64)
Performs a full or partial save of the enabled processor states to memory at
State is saved based on bits
save_mask and XCR0.
mem_addr must be aligned on a 64-byte boundary.
The format of the XSAVE area is detailed in Section 13.4, “XSAVE Area,” of Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 1.