Struct Pxe

pub struct Pxe {
    pub pfn: Pfn,
    pub flags: PxeFlags,
}

A Pxe is a set of flags (PxeFlags) and a Page Frame Number (PFN). This representation takes more space than a regular PXE but it is more convenient to split the flags / the pfn as bitflags! doesn’t seem to support bitfields.

Fields

pfn: Pfn

The PFN of the next table or the final page.

flags: PxeFlags

PXE flags.

Implementations

impl Pxe

pub fn new(pfn: Pfn, flags: PxeFlags) -> Self

Create a Pxe from a pfn and a set of flags.

Examples

let pxe = Pxe::new(
    Pfn::new(0x6d600),
    PxeFlags::UserAccessible | PxeFlags::Accessed | PxeFlags::Present
);
assert_eq!(pxe.pfn.u64(), 0x6d600);

pub fn present(&self) -> bool

Is the bit Present/Valid turned on?

Examples

let p = Pxe::new(
    Pfn::new(0x6d600),
    PxeFlags::Present
);
assert_eq!(p.present(), true);
let np = Pxe::new(
    Pfn::new(0x1337),
    PxeFlags::UserAccessible
);
assert_eq!(np.present(), false);

pub fn large_page(&self) -> bool

Is it a large page?

Examples

let p = Pxe::new(
    Pfn::new(0x6d600),
    PxeFlags::LargePage
);
assert_eq!(p.large_page(), true);
let np = Pxe::new(
    Pfn::new(0x1337),
    PxeFlags::UserAccessible
);
assert_eq!(np.large_page(), false);

pub fn transition(&self) -> bool

Is it a transition PTE?

Examples

let p = Pxe::from(0x166B7880);
let np = Pxe::from(0xA000000077AF867);
assert_eq!(p.transition(), true);
assert_eq!(np.transition(), false);

Trait Implementations

impl Clone for Pxe

fn clone(&self) -> Pxe

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Pxe

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

Formats the value using the given formatter.

impl Default for Pxe

fn default() -> Pxe

Returns the “default value” for a type.

impl From<Pxe> for u64

Convert a Pxe into a u64.

fn from(pxe: Pxe) -> Self

Create a u64 from a Pxe.

Examples

let pxe = Pxe::new(
    Pfn::new(0x6d600),
    PxeFlags::UserAccessible | PxeFlags::Accessed | PxeFlags::Present,
);
assert_eq!(u64::from(pxe), 0x6D_60_00_25);

impl From<u64> for Pxe

Convert a u64 into a Pxe.

fn from(value: u64) -> Self

Create a u64 from a Pxe.

Examples

let pxe = Pxe::from(0x6D_60_00_25);
assert_eq!(pxe.pfn.u64(), 0x6d600);
assert_eq!(pxe.flags, PxeFlags::UserAccessible | PxeFlags::Accessed | PxeFlags::Present);

impl Hash for Pxe

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Pxe

fn cmp(&self, other: &Pxe) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Pxe

fn eq(&self, other: &Pxe) -> 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 PartialOrd for Pxe

fn partial_cmp(&self, other: &Pxe) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Pxe

impl Eq for Pxe

impl StructuralPartialEq for Pxe