Struct page_table_entry::riscv::PTEFlags

pub struct PTEFlags(/* private fields */);

Page-table entry flags.

Implementations

impl PTEFlags

pub const V: Self = _

Available on RISC-V RV32 or RISC-V RV64 only.

Whether the PTE is valid.

pub const R: Self = _

Available on RISC-V RV32 or RISC-V RV64 only.

Whether the page is readable.

pub const W: Self = _

Available on RISC-V RV32 or RISC-V RV64 only.

Whether the page is writable.

pub const X: Self = _

Available on RISC-V RV32 or RISC-V RV64 only.

Whether the page is executable.

pub const U: Self = _

Available on RISC-V RV32 or RISC-V RV64 only.

Whether the page is accessible to user mode.

pub const G: Self = _

Available on RISC-V RV32 or RISC-V RV64 only.

Designates a global mapping.

pub const A: Self = _

Available on RISC-V RV32 or RISC-V RV64 only.

Indicates the virtual page has been read, written, or fetched from since the last time the A bit was cleared.

pub const D: Self = _

Available on RISC-V RV32 or RISC-V RV64 only.

Indicates the virtual page has been written since the last time the D bit was cleared.

impl PTEFlags

pub const fn empty() -> Self

Available on RISC-V RV32 or RISC-V RV64 only.

Get a flags value with all bits unset.

pub const fn all() -> Self

Available on RISC-V RV32 or RISC-V RV64 only.

Get a flags value with all known bits set.

pub const fn bits(&self) -> usize

Available on RISC-V RV32 or RISC-V RV64 only.

Get the underlying bits value.

The returned value is exactly the bits set in this flags value.

pub const fn from_bits(bits: usize) -> Option<Self>

Available on RISC-V RV32 or RISC-V RV64 only.

Convert from a bits value.

This method will return None if any unknown bits are set.

pub const fn from_bits_truncate(bits: usize) -> Self

Available on RISC-V RV32 or RISC-V RV64 only.

Convert from a bits value, unsetting any unknown bits.

pub const fn from_bits_retain(bits: usize) -> Self

Available on RISC-V RV32 or RISC-V RV64 only.

Convert from a bits value exactly.

pub fn from_name(name: &str) -> Option<Self>

Available on RISC-V RV32 or RISC-V RV64 only.

Get a flags value with the bits of a flag with the given name set.

This method will return None if name is empty or doesn’t correspond to any named flag.

pub const fn is_empty(&self) -> bool

Available on RISC-V RV32 or RISC-V RV64 only.

Whether all bits in this flags value are unset.

pub const fn is_all(&self) -> bool

Available on RISC-V RV32 or RISC-V RV64 only.

Whether all known bits in this flags value are set.

pub const fn intersects(&self, other: Self) -> bool

Available on RISC-V RV32 or RISC-V RV64 only.

Whether any set bits in a source flags value are also set in a target flags value.

pub const fn contains(&self, other: Self) -> bool

Available on RISC-V RV32 or RISC-V RV64 only.

Whether all set bits in a source flags value are also set in a target flags value.

pub fn insert(&mut self, other: Self)

Available on RISC-V RV32 or RISC-V RV64 only.

The bitwise or (|) of the bits in two flags values.

pub fn remove(&mut self, other: Self)

Available on RISC-V RV32 or RISC-V RV64 only.

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. remove won’t truncate other, but the ! operator will.

pub fn toggle(&mut self, other: Self)

Available on RISC-V RV32 or RISC-V RV64 only.

The bitwise exclusive-or (^) of the bits in two flags values.

pub fn set(&mut self, other: Self, value: bool)

Available on RISC-V RV32 or RISC-V RV64 only.

Call insert when value is true or remove when value is false.

pub const fn intersection(self, other: Self) -> Self

Available on RISC-V RV32 or RISC-V RV64 only.

The bitwise and (&) of the bits in two flags values.

pub const fn union(self, other: Self) -> Self

Available on RISC-V RV32 or RISC-V RV64 only.

The bitwise or (|) of the bits in two flags values.

pub const fn difference(self, other: Self) -> Self

Available on RISC-V RV32 or RISC-V RV64 only.

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

pub const fn symmetric_difference(self, other: Self) -> Self

Available on RISC-V RV32 or RISC-V RV64 only.

The bitwise exclusive-or (^) of the bits in two flags values.

pub const fn complement(self) -> Self

Available on RISC-V RV32 or RISC-V RV64 only.

The bitwise negation (!) of the bits in a flags value, truncating the result.

impl PTEFlags

pub const fn iter(&self) -> Iter<PTEFlags>

Available on RISC-V RV32 or RISC-V RV64 only.

Yield a set of contained flags values.

Each yielded flags value will correspond to a defined named flag. Any unknown bits will be yielded together as a final flags value.

pub const fn iter_names(&self) -> IterNames<PTEFlags>

Available on RISC-V RV32 or RISC-V RV64 only.

Yield a set of contained named flags values.

This method is like iter, except only yields bits in contained named flags. Any unknown bits, or bits not corresponding to a contained flag will not be yielded.

Trait Implementations

impl Binary for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

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

Formats the value using the given formatter.

impl BitAnd for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

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

The bitwise and (&) of the bits in two flags values.

type Output = PTEFlags

The resulting type after applying the & operator.

impl BitAndAssign for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

fn bitand_assign(&mut self, other: Self)

The bitwise and (&) of the bits in two flags values.

impl BitOr for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

fn bitor(self, other: PTEFlags) -> Self

The bitwise or (|) of the bits in two flags values.

type Output = PTEFlags

The resulting type after applying the | operator.

impl BitOrAssign for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

fn bitor_assign(&mut self, other: Self)

The bitwise or (|) of the bits in two flags values.

impl BitXor for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

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

The bitwise exclusive-or (^) of the bits in two flags values.

type Output = PTEFlags

The resulting type after applying the ^ operator.

impl BitXorAssign for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

fn bitxor_assign(&mut self, other: Self)

The bitwise exclusive-or (^) of the bits in two flags values.

impl Debug for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

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

Formats the value using the given formatter.

impl Extend<PTEFlags> for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)

The bitwise or (|) of the bits in each flags value.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl Flags for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

const FLAGS: &'static [Flag<PTEFlags>] = _

The set of defined flags.

type Bits = usize

The underlying bits type.

fn bits(&self) -> usize

Get the underlying bits value.

fn from_bits_retain(bits: usize) -> PTEFlags

Convert from a bits value exactly.

fn empty() -> Self

Get a flags value with all bits unset.

fn all() -> Self

Get a flags value with all known bits set.

fn from_bits(bits: Self::Bits) -> Option<Self>

Convert from a bits value.

fn from_bits_truncate(bits: Self::Bits) -> Self

Convert from a bits value, unsetting any unknown bits.

fn from_name(name: &str) -> Option<Self>

Get a flags value with the bits of a flag with the given name set.

fn iter(&self) -> Iter<Self>

Yield a set of contained flags values.

fn iter_names(&self) -> IterNames<Self>

Yield a set of contained named flags values.

fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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

where Self: Sized,

Whether any set bits in a source flags value are also set in a target flags value.

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

where Self: Sized,

Whether all set bits in a source flags value are also set in a target flags value.

fn insert(&mut self, other: Self)

where Self: Sized,

The bitwise or (|) of the bits in two flags values.

fn remove(&mut self, other: Self)

where Self: Sized,

The intersection of a source flags value with the complement of a target flags value (&!).

fn toggle(&mut self, other: Self)

where Self: Sized,

The bitwise exclusive-or (^) of the bits in two flags values.

fn set(&mut self, other: Self, value: bool)

where Self: Sized,

Call [Flags::insert] when value is true or [Flags::remove] when value is false.

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

The bitwise and (&) of the bits in two flags values.

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

The bitwise or (|) of the bits in two flags values.

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

The intersection of a source flags value with the complement of a target flags value (&!).

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

The bitwise exclusive-or (^) of the bits in two flags values.

fn complement(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

impl From<MappingFlags> for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

fn from(f: MappingFlags) -> Self

Converts to this type from the input type.

impl From<PTEFlags> for MappingFlags

Available on RISC-V RV32 or RISC-V RV64 only.

fn from(f: PTEFlags) -> Self

Converts to this type from the input type.

impl FromIterator<PTEFlags> for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self

The bitwise or (|) of the bits in each flags value.

impl IntoIterator for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

type Item = PTEFlags

The type of the elements being iterated over.

type IntoIter = Iter<PTEFlags>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl LowerHex for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

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

Formats the value using the given formatter.

impl Not for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

fn not(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

type Output = PTEFlags

The resulting type after applying the ! operator.

impl Octal for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

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

Formats the value using the given formatter.

impl PublicFlags for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

type Primitive = usize

The type of the underlying storage.

type Internal = InternalBitFlags

The type of the internal field on the generated flags type.

impl Sub for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

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

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

type Output = PTEFlags

The resulting type after applying the - operator.

impl SubAssign for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

fn sub_assign(&mut self, other: Self)

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

impl UpperHex for PTEFlags

Available on RISC-V RV32 or RISC-V RV64 only.

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

Formats the value using the given formatter.