x86_64::registers::rflags

Function write_raw

Source
pub unsafe fn write_raw(val: u64)
Expand description

Writes the RFLAGS register.

Does not preserve any bits, including reserved bits.

ยงSafety

Unsafe because undefined becavior can occur if certain flags are modified. For example, the DF flag must be unset in all Rust code. Also, modifying CF, PF, or any other flags also used by Rust/LLVM can result in undefined behavior too.