Struct Cr3

#[repr(transparent)]
pub struct Cr3(u32);

Contains the physical address of the base of the paging-structure hierarchy and two flags (PCD and PWT).

The PCD and PWT flags control caching of that paging structure in the processor’s internal data caches (they do not control TLB caching of page-directory information).

Tuple Fields

0: u32

Implementations

impl Cr3

const WRITE_THROUGH_BITS: usize = 1usize

const WRITE_THROUGH_OFFSET: usize = 3usize

const CACHE_DISABLE_BITS: usize = 1usize

const CACHE_DISABLE_OFFSET: usize = 4usize

const ADDRESS_BITS: usize = 20usize

const ADDRESS_OFFSET: usize = 12usize

pub const fn new() -> Self

Creates a new default initialized bitfield.

pub const fn from_bits(bits: u32) -> Self

Convert from bits.

pub const fn into_bits(self) -> u32

Convert into bits.

pub const fn write_through(&self) -> bool

Page-level write-through.

Bits: 3..4

pub const fn with_write_through_checked(self, value: bool) -> Result<Self, ()>

Page-level write-through.

Bits: 3..4

pub const fn with_write_through(self, value: bool) -> Self

Page-level write-through.

Bits: 3..4

pub const fn set_write_through(&mut self, value: bool)

Page-level write-through.

Bits: 3..4

pub const fn set_write_through_checked(&mut self, value: bool) -> Result<(), ()>

Page-level write-through.

Bits: 3..4

pub const fn cache_disable(&self) -> bool

Page-level cache disable.

Bits: 4..5

pub const fn with_cache_disable_checked(self, value: bool) -> Result<Self, ()>

Page-level cache disable.

Bits: 4..5

pub const fn with_cache_disable(self, value: bool) -> Self

Page-level cache disable.

Bits: 4..5

pub const fn set_cache_disable(&mut self, value: bool)

Page-level cache disable.

Bits: 4..5

pub const fn set_cache_disable_checked(&mut self, value: bool) -> Result<(), ()>

Page-level cache disable.

Bits: 4..5

pub const fn address(&self) -> Physical

Physical address of the page directory. The lower 12 bits of the address are assumed to be 0. The page directory must thus be aligned to a page (4K) boundary.

Bits: 12..32

pub const fn with_address_checked(self, value: Physical) -> Result<Self, ()>

Physical address of the page directory. The lower 12 bits of the address are assumed to be 0. The page directory must thus be aligned to a page (4K) boundary.

Bits: 12..32

pub const fn with_address(self, value: Physical) -> Self

Physical address of the page directory. The lower 12 bits of the address are assumed to be 0. The page directory must thus be aligned to a page (4K) boundary.

Bits: 12..32

pub const fn set_address(&mut self, value: Physical)

Physical address of the page directory. The lower 12 bits of the address are assumed to be 0. The page directory must thus be aligned to a page (4K) boundary.

Bits: 12..32

pub const fn set_address_checked(&mut self, value: Physical) -> Result<(), ()>

Physical address of the page directory. The lower 12 bits of the address are assumed to be 0. The page directory must thus be aligned to a page (4K) boundary.

Bits: 12..32

impl Cr3

pub fn read() -> Self

pub unsafe fn write(self)

Trait Implementations

impl Clone for Cr3

fn clone(&self) -> Cr3

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Cr3

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

Formats the value using the given formatter.

impl Default for Cr3

fn default() -> Self

Returns the “default value” for a type.

impl From<Cr3> for u32

fn from(v: Cr3) -> u32

Converts to this type from the input type.

impl From<u32> for Cr3

fn from(v: u32) -> Self

Converts to this type from the input type.

impl Copy for Cr3