x86::bits32::paging

Struct PDEntry

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#[repr(transparent)]
pub struct PDEntry(pub u32);
Expand description

A PD Entry consists of an address and a bunch of flags.

Tuple Fields§

§0: u32

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impl PDEntry

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pub fn new(pt: PAddr, flags: PDFlags) -> PDEntry

Creates a new PDEntry.

§Arguments
  • pt - The physical address of the page table.
  • flags- Additional flags for the entry.
§Implementation notes

This doesn’t support PSE-36 or PSE-40.

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pub fn address(self) -> PAddr

Retrieves the physical address in this entry.

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pub fn flags(self) -> PDFlags

Returns the flags corresponding to this entry.

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pub fn is_present(self) -> bool

Present; must be 1 to map a 4-MByte page.

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pub fn is_writeable(self) -> bool

Read/write; if 0, writes may not be allowed to the 4-MByte page referenced by this entry.

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pub fn is_user_mode_allowed(self) -> bool

User/supervisor; if 0, user-mode accesses are not allowed to the 4-MByte page referenced by this entry.

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pub fn is_page_write_through(self) -> bool

Page-level write-through.

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pub fn is_page_level_cache_disabled(self) -> bool

Page-level cache disable.

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pub fn is_accessed(self) -> bool

Accessed; indicates whether software has accessed the 4-MByte page referenced by this entry.

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pub fn is_dirty(self) -> bool

Dirty; indicates whether software has written to the 4-MByte page referenced by this entry.

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pub fn is_page(self) -> bool

Page size; if set this entry maps a 4-MByte page; otherwise, this entry references a page directory.

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pub fn is_global(self) -> bool

Global; if CR4.PGE = 1, determines whether the translation is global; ignored otherwise.

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pub fn is_pat(self) -> bool

If the PAT is supported, indirectly determines the memory type used to access the 4-MByte page referenced by this entry; otherwise, reserved (must be 0)

Trait Implementations§

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impl Clone for PDEntry

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fn clone(&self) -> PDEntry

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for PDEntry

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

Formats the value using the given formatter. Read more
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impl Copy for PDEntry

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.