Struct GlobalDescriptorTableRegister

#[repr(C, packed(1))]
pub struct GlobalDescriptorTableRegister {
    pub limit: u16,
    pub address: usize,
}

Available on x86 or x86-64 only.

GDTR: Points to the memory range of the global descriptor table (GDT).

Fields

limit: u16

The inclusive maximum address offset (i.e., size - 1) of the descriptor table.

address: usize

Base address of the descriptor table

Implementations

impl GlobalDescriptorTableRegister

pub fn get() -> Self

Retrieve the current value of this register

pub unsafe fn set(value: &Self)

Update the register to the given value.

Safety

This register fundamentally affects memory accesses and can have an impact on memory safety.

pub unsafe fn set_with_segments( gdt_pointer: &Self, code_selector: Selector, data_selector: Selector, )

Update the global descriptor table pointer and all segment registers.

Safety

This register fundamentally affects memory accesses and can have an impact on memory safety.

Trait Implementations

impl Clone for GlobalDescriptorTableRegister

fn clone(&self) -> GlobalDescriptorTableRegister

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GlobalDescriptorTableRegister

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

Formats the value using the given formatter.

impl Default for GlobalDescriptorTableRegister

fn default() -> GlobalDescriptorTableRegister

Returns the “default value” for a type.

impl PartialEq for GlobalDescriptorTableRegister

fn eq(&self, other: &GlobalDescriptorTableRegister) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for GlobalDescriptorTableRegister

impl Eq for GlobalDescriptorTableRegister

impl StructuralPartialEq for GlobalDescriptorTableRegister