#[repr(transparent)]pub struct PDFlags { /* private fields */ }
Expand description
PD configuration bits description.
Implementations
sourceimpl PDFlags
impl PDFlags
sourcepub const RW: Self = Self{bits: 1 << 1,}
pub const RW: Self = Self{bits: 1 << 1,}
Read/write; if 0, writes may not be allowed to the 4-MByte page referenced by this entry.
sourcepub const US: Self = Self{bits: 1 << 2,}
pub const US: Self = Self{bits: 1 << 2,}
User/supervisor; if 0, user-mode accesses are not allowed to the 4-MByte page referenced by this entry.
sourcepub const A: Self = Self{bits: 1 << 5,}
pub const A: Self = Self{bits: 1 << 5,}
Accessed; indicates whether software has accessed the 4-MByte page referenced by this entry.
sourcepub const D: Self = Self{bits: 1 << 6,}
pub const D: Self = Self{bits: 1 << 6,}
Dirty; indicates whether software has written to the 4-MByte page referenced by this entry.
sourcepub const PS: Self = Self{bits: 1 << 7,}
pub const PS: Self = Self{bits: 1 << 7,}
Page size; if set this entry maps a 4-MByte page; otherwise, this entry references a page directory.
sourcepub const G: Self = Self{bits: 1 << 8,}
pub const G: Self = Self{bits: 1 << 8,}
Global; if CR4.PGE = 1, determines whether the translation is global; ignored otherwise.
sourcepub const PAT: Self = Self{bits: 1 << 12,}
pub const PAT: Self = Self{bits: 1 << 12,}
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)
sourcepub const fn from_bits(bits: u32) -> Option<Self>
pub const fn from_bits(bits: u32) -> Option<Self>
Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.
sourcepub const fn from_bits_truncate(bits: u32) -> Self
pub const fn from_bits_truncate(bits: u32) -> Self
Convert from underlying bit representation, dropping any bits that do not correspond to flags.
sourcepub const unsafe fn from_bits_unchecked(bits: u32) -> Self
pub const unsafe fn from_bits_unchecked(bits: u32) -> Self
Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).
Safety
The caller of the bitflags!
macro can chose to allow or
disallow extra bits for their bitflags type.
The caller of from_bits_unchecked()
has to ensure that
all bits correspond to a defined flag or that extra bits
are valid for this bitflags type.
sourcepub const fn intersects(&self, other: Self) -> bool
pub const fn intersects(&self, other: Self) -> bool
Returns true
if there are flags common to both self
and other
.
sourcepub const fn contains(&self, other: Self) -> bool
pub const fn contains(&self, other: Self) -> bool
Returns true
if all of the flags in other
are contained within self
.
sourcepub fn set(&mut self, other: Self, value: bool)
pub fn set(&mut self, other: Self, value: bool)
Inserts or removes the specified flags depending on the passed value.
sourcepub const fn intersection(self, other: Self) -> Self
pub const fn intersection(self, other: Self) -> Self
Returns the intersection between the flags in self
and
other
.
Specifically, the returned set contains only the flags which are
present in both self
and other
.
This is equivalent to using the &
operator (e.g.
ops::BitAnd
), as in flags & other
.
sourcepub const fn union(self, other: Self) -> Self
pub const fn union(self, other: Self) -> Self
Returns the union of between the flags in self
and other
.
Specifically, the returned set contains all flags which are
present in either self
or other
, including any which are
present in both (see Self::symmetric_difference
if that
is undesirable).
This is equivalent to using the |
operator (e.g.
ops::BitOr
), as in flags | other
.
sourcepub const fn difference(self, other: Self) -> Self
pub const fn difference(self, other: Self) -> Self
Returns the difference between the flags in self
and other
.
Specifically, the returned set contains all flags present in
self
, except for the ones present in other
.
It is also conceptually equivalent to the “bit-clear” operation:
flags & !other
(and this syntax is also supported).
This is equivalent to using the -
operator (e.g.
ops::Sub
), as in flags - other
.
sourcepub const fn symmetric_difference(self, other: Self) -> Self
pub const fn symmetric_difference(self, other: Self) -> Self
Returns the symmetric difference between the flags
in self
and other
.
Specifically, the returned set contains the flags present which
are present in self
or other
, but that are not present in
both. Equivalently, it contains the flags present in exactly
one of the sets self
and other
.
This is equivalent to using the ^
operator (e.g.
ops::BitXor
), as in flags ^ other
.
sourcepub const fn complement(self) -> Self
pub const fn complement(self) -> Self
Returns the complement of this set of flags.
Specifically, the returned set contains all the flags which are
not set in self
, but which are allowed for this type.
Alternatively, it can be thought of as the set difference
between Self::all()
and self
(e.g. Self::all() - self
)
This is equivalent to using the !
operator (e.g.
ops::Not
), as in !flags
.
Trait Implementations
sourceimpl BitAndAssign<PDFlags> for PDFlags
impl BitAndAssign<PDFlags> for PDFlags
sourcefn bitand_assign(&mut self, other: Self)
fn bitand_assign(&mut self, other: Self)
Disables all flags disabled in the set.
sourceimpl BitOrAssign<PDFlags> for PDFlags
impl BitOrAssign<PDFlags> for PDFlags
sourcefn bitor_assign(&mut self, other: Self)
fn bitor_assign(&mut self, other: Self)
Adds the set of flags.
sourceimpl BitXorAssign<PDFlags> for PDFlags
impl BitXorAssign<PDFlags> for PDFlags
sourcefn bitxor_assign(&mut self, other: Self)
fn bitxor_assign(&mut self, other: Self)
Toggles the set of flags.
sourceimpl Extend<PDFlags> for PDFlags
impl Extend<PDFlags> for PDFlags
sourcefn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)
fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)
Extends a collection with the contents of an iterator. Read more
sourcefn extend_one(&mut self, item: A)
fn extend_one(&mut self, item: A)
extend_one
)Extends a collection with exactly one element.
sourcefn extend_reserve(&mut self, additional: usize)
fn extend_reserve(&mut self, additional: usize)
extend_one
)Reserves capacity in a collection for the given number of additional elements. Read more
sourceimpl FromIterator<PDFlags> for PDFlags
impl FromIterator<PDFlags> for PDFlags
sourcefn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self
fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self
Creates a value from an iterator. Read more
sourceimpl Ord for PDFlags
impl Ord for PDFlags
sourceimpl PartialOrd<PDFlags> for PDFlags
impl PartialOrd<PDFlags> for PDFlags
sourcefn partial_cmp(&self, other: &PDFlags) -> Option<Ordering>
fn partial_cmp(&self, other: &PDFlags) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
1.0.0 · sourcefn lt(&self, other: &Rhs) -> bool
fn lt(&self, other: &Rhs) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
1.0.0 · sourcefn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
sourceimpl SubAssign<PDFlags> for PDFlags
impl SubAssign<PDFlags> for PDFlags
sourcefn sub_assign(&mut self, other: Self)
fn sub_assign(&mut self, other: Self)
Disables all flags enabled in the set.
impl Copy for PDFlags
impl Eq for PDFlags
impl StructuralEq for PDFlags
impl StructuralPartialEq for PDFlags
Auto Trait Implementations
impl RefUnwindSafe for PDFlags
impl Send for PDFlags
impl Sync for PDFlags
impl Unpin for PDFlags
impl UnwindSafe for PDFlags
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more