Function core::arch::x86_64::_fxsave64

1.27.0 · source · [−]
pub unsafe fn _fxsave64(mem_addr: *mut u8)
This is supported on x86-64 and target feature fxsr only.
Expand description

Saves the x87 FPU, MMX technology, XMM, and MXCSR registers to the 512-byte-long 16-byte-aligned memory region mem_addr.

A misaligned destination operand raises a general-protection (#GP) or an alignment check exception (#AC).

See FXSAVE and FXRSTOR.

Intel’s documentation