Struct x86_64::registers::segmentation::SS

pub struct SS;

Stack Segment

Entirely unused in 64-bit mode; setting the segment register does nothing. However, in ring 3, the SS register still has to point to a valid Descriptor (it cannot be zero). This means a user-mode read/write segment descriptor must be present in the GDT.

This register is also set by the syscall/sysret and sysenter/sysexit instructions (even on 64-bit transitions). This is to maintain symmetry with 32-bit transitions where setting SS actually will actually have an effect.

Trait Implementations

impl Debug for SS

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Segment for SS

Available on crate feature instructions only.

fn get_reg() -> SegmentSelector

Returns the current value of the segment register.

unsafe fn set_reg(sel: SegmentSelector)

Reload the segment register. Depending on the segment, this may also reconfigure the corresponding segment.