Struct x86::paging::PTEntry

pub struct PTEntry {
    // some fields omitted
}

Methods

impl PTEntry

fn empty() -> PTEntry

Returns an empty set of flags.

fn all() -> PTEntry

Returns the set containing all flags.

fn bits(&self) -> u64

Returns the raw value of the flags currently stored.

fn from_bits(bits: u64) -> Option<PTEntry>

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

fn from_bits_truncate(bits: u64) -> PTEntry

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

fn is_all(&self) -> bool

Returns true if all flags are currently set.

fn intersects(&self, other: PTEntry) -> bool

Returns true if there are flags common to both self and other.

fn contains(&self, other: PTEntry) -> bool

Returns true all of the flags in other are contained within self.

fn insert(&mut self, other: PTEntry)

Inserts the specified flags in-place.

fn remove(&mut self, other: PTEntry)

Removes the specified flags in-place.

fn toggle(&mut self, other: PTEntry)

Toggles the specified flags in-place.

impl PTEntry

fn new(page: PAddr, flags: PTEntry) -> PTEntry

Creates a new PTEntry.

Arguments

• page - The physical address of the backing 4 KiB page.
• flags- Additional flags for the entry.

fn get_address(self) -> PAddr

Retrieves the physical address in this entry.

fn is_present(&self) -> bool

Present; must be 1 to map a 4-KByte page or reference a page table.

fn is_writeable(&self) -> bool

Read/write; if 0, writes may not be allowed to the 4-KByte region controlled by this entry

fn is_user_mode_allowed(&self) -> bool

User/supervisor; user-mode accesses are not allowed to the 4-KByte region controlled by this entry.

fn is_page_write_through(&self) -> bool

Page-level write-through.

fn is_page_level_cache_disabled(&self) -> bool

Page-level cache disable.

fn is_accessed(&self) -> bool

Accessed; if PT_PS set indicates whether software has accessed the 4-KByte page else indicates whether this entry has been used for linear-address translation.

fn is_dirty(&self) -> bool

Dirty; if PD_PS set indicates whether software has written to the 4-KByte page referenced by this entry else ignored.

fn is_global(&self) -> bool

Global; if PT_PS && CR4.PGE = 1, determines whether the translation is global; ignored otherwise if not PT_PS this is ignored.

fn is_instruction_fetching_disabled(&self) -> bool

If IA32_EFER.NXE = 1, execute-disable. If 1, instruction fetches are not allowed from the 4-KByte region.

Trait Implementations

impl Hash for PTEntry

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the state given, updating the hasher as necessary.

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

Feeds a slice of this type into the state provided.

impl Ord for PTEntry

fn cmp(&self, __arg_0: &PTEntry) -> Ordering

This method returns an Ordering between self and other.

impl PartialOrd for PTEntry

fn partial_cmp(&self, __arg_0: &PTEntry) -> Option<Ordering>

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

fn lt(&self, __arg_0: &PTEntry) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, __arg_0: &PTEntry) -> bool

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

fn gt(&self, __arg_0: &PTEntry) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, __arg_0: &PTEntry) -> bool

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

impl Clone for PTEntry

fn clone(&self) -> PTEntry

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Eq for PTEntry

impl PartialEq for PTEntry

fn eq(&self, __arg_0: &PTEntry) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &PTEntry) -> bool

This method tests for !=.

impl Copy for PTEntry

impl Debug for PTEntry

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl BitOr for PTEntry

type Output = PTEntry

The resulting type after applying the | operator

fn bitor(self, other: PTEntry) -> PTEntry

Returns the union of the two sets of flags.

impl BitXor for PTEntry

type Output = PTEntry

The resulting type after applying the ^ operator

fn bitxor(self, other: PTEntry) -> PTEntry

Returns the left flags, but with all the right flags toggled.

impl BitAnd for PTEntry

type Output = PTEntry

The resulting type after applying the & operator

fn bitand(self, other: PTEntry) -> PTEntry

Returns the intersection between the two sets of flags.

impl Sub for PTEntry

type Output = PTEntry

The resulting type after applying the - operator

fn sub(self, other: PTEntry) -> PTEntry

Returns the set difference of the two sets of flags.

impl Not for PTEntry

type Output = PTEntry

The resulting type after applying the ! operator

fn not(self) -> PTEntry

Returns the complement of this set of flags.