#[repr(transparent)]pub struct PML4Flags { /* private fields */ }
Expand description
PML4 configuration bit description.
Implementations
sourceimpl PML4Flags
impl PML4Flags
sourcepub const P: Self = Self{bits: 1 << 0,}
pub const P: Self = Self{bits: 1 << 0,}
Present; must be 1 to reference a page-directory-pointer table
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 512-GByte region controlled by this entry (see Section 4.6)
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 512-GByte region controlled by this entry.
sourcepub const PWT: Self = Self{bits: 1 << 3,}
pub const PWT: Self = Self{bits: 1 << 3,}
Page-level write-through; indirectly determines the memory type used to access the page-directory-pointer table referenced by this entry.
sourcepub const PCD: Self = Self{bits: 1 << 4,}
pub const PCD: Self = Self{bits: 1 << 4,}
Page-level cache disable; indirectly determines the memory type used to access the page-directory-pointer table referenced by this entry.
sourcepub const A: Self = Self{bits: 1 << 5,}
pub const A: Self = Self{bits: 1 << 5,}
Accessed; indicates whether this entry has been used for linear-address translation.
sourcepub const XD: Self = Self{bits: 1 << 63,}
pub const XD: Self = Self{bits: 1 << 63,}
If IA32_EFER.NXE = 1, execute-disable If 1, instruction fetches are not allowed from the 512-GByte region.
sourcepub const fn from_bits(bits: u64) -> Option<Self>
pub const fn from_bits(bits: u64) -> 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: u64) -> Self
pub const fn from_bits_truncate(bits: u64) -> Self
Convert from underlying bit representation, dropping any bits that do not correspond to flags.
sourcepub const unsafe fn from_bits_unchecked(bits: u64) -> Self
pub const unsafe fn from_bits_unchecked(bits: u64) -> 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<PML4Flags> for PML4Flags
impl BitAndAssign<PML4Flags> for PML4Flags
sourcefn bitand_assign(&mut self, other: Self)
fn bitand_assign(&mut self, other: Self)
Disables all flags disabled in the set.
sourceimpl BitOrAssign<PML4Flags> for PML4Flags
impl BitOrAssign<PML4Flags> for PML4Flags
sourcefn bitor_assign(&mut self, other: Self)
fn bitor_assign(&mut self, other: Self)
Adds the set of flags.
sourceimpl BitXorAssign<PML4Flags> for PML4Flags
impl BitXorAssign<PML4Flags> for PML4Flags
sourcefn bitxor_assign(&mut self, other: Self)
fn bitxor_assign(&mut self, other: Self)
Toggles the set of flags.
sourceimpl Extend<PML4Flags> for PML4Flags
impl Extend<PML4Flags> for PML4Flags
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<PML4Flags> for PML4Flags
impl FromIterator<PML4Flags> for PML4Flags
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 PML4Flags
impl Ord for PML4Flags
sourceimpl PartialOrd<PML4Flags> for PML4Flags
impl PartialOrd<PML4Flags> for PML4Flags
sourcefn partial_cmp(&self, other: &PML4Flags) -> Option<Ordering>
fn partial_cmp(&self, other: &PML4Flags) -> 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<PML4Flags> for PML4Flags
impl SubAssign<PML4Flags> for PML4Flags
sourcefn sub_assign(&mut self, other: Self)
fn sub_assign(&mut self, other: Self)
Disables all flags enabled in the set.
impl Copy for PML4Flags
impl Eq for PML4Flags
impl StructuralEq for PML4Flags
impl StructuralPartialEq for PML4Flags
Auto Trait Implementations
impl RefUnwindSafe for PML4Flags
impl Send for PML4Flags
impl Sync for PML4Flags
impl Unpin for PML4Flags
impl UnwindSafe for PML4Flags
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