pub struct Cr0Flags { /* private fields */ }
Expand description
Configuration flags of the Cr0
register.
Implementations
sourceimpl Cr0Flags
impl Cr0Flags
sourcepub const PROTECTED_MODE_ENABLE: Self
pub const PROTECTED_MODE_ENABLE: Self
Enables protected mode.
sourcepub const MONITOR_COPROCESSOR: Self
pub const MONITOR_COPROCESSOR: Self
Enables monitoring of the coprocessor, typical for x87 instructions.
Controls (together with the TASK_SWITCHED
flag) whether a wait
or fwait
instruction should cause an #NE
exception.
sourcepub const EMULATE_COPROCESSOR: Self
pub const EMULATE_COPROCESSOR: Self
Force all x87 and MMX instructions to cause an #NE
exception.
sourcepub const TASK_SWITCHED: Self
pub const TASK_SWITCHED: Self
Automatically set to 1 on hardware task switch.
This flags allows lazily saving x87/MMX/SSE instructions on hardware context switches.
sourcepub const EXTENSION_TYPE: Self
pub const EXTENSION_TYPE: Self
Indicates support of 387DX math coprocessor instructions.
Always set on all recent x86 processors, cannot be cleared.
sourcepub const NUMERIC_ERROR: Self
pub const NUMERIC_ERROR: Self
Enables the native (internal) error reporting mechanism for x87 FPU errors.
sourcepub const WRITE_PROTECT: Self
pub const WRITE_PROTECT: Self
Controls whether supervisor-level writes to read-only pages are inhibited.
When set, it is not possible to write to read-only pages from ring 0.
sourcepub const ALIGNMENT_MASK: Self
pub const ALIGNMENT_MASK: Self
Enables automatic usermode alignment checking if [RFlags::ALIGNMENT_CHECK
] is also set.
sourcepub const NOT_WRITE_THROUGH: Self
pub const NOT_WRITE_THROUGH: Self
Ignored, should always be unset.
Must be unset if CACHE_DISABLE
is unset.
Older CPUs used this to control write-back/write-through cache strategy.
sourcepub const CACHE_DISABLE: Self
pub const CACHE_DISABLE: Self
Disables some processor caches, specifics are model-dependent.
sourcepub const PAGING: Self
pub const PAGING: Self
Enables paging.
If this bit is set, PROTECTED_MODE_ENABLE
must be set.
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<Cr0Flags> for Cr0Flags
impl BitAndAssign<Cr0Flags> for Cr0Flags
sourcefn bitand_assign(&mut self, other: Self)
fn bitand_assign(&mut self, other: Self)
Disables all flags disabled in the set.
sourceimpl BitOrAssign<Cr0Flags> for Cr0Flags
impl BitOrAssign<Cr0Flags> for Cr0Flags
sourcefn bitor_assign(&mut self, other: Self)
fn bitor_assign(&mut self, other: Self)
Adds the set of flags.
sourceimpl BitXorAssign<Cr0Flags> for Cr0Flags
impl BitXorAssign<Cr0Flags> for Cr0Flags
sourcefn bitxor_assign(&mut self, other: Self)
fn bitxor_assign(&mut self, other: Self)
Toggles the set of flags.
sourceimpl Extend<Cr0Flags> for Cr0Flags
impl Extend<Cr0Flags> for Cr0Flags
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<Cr0Flags> for Cr0Flags
impl FromIterator<Cr0Flags> for Cr0Flags
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 Cr0Flags
impl Ord for Cr0Flags
sourceimpl PartialOrd<Cr0Flags> for Cr0Flags
impl PartialOrd<Cr0Flags> for Cr0Flags
sourcefn partial_cmp(&self, other: &Cr0Flags) -> Option<Ordering>
fn partial_cmp(&self, other: &Cr0Flags) -> 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<Cr0Flags> for Cr0Flags
impl SubAssign<Cr0Flags> for Cr0Flags
sourcefn sub_assign(&mut self, other: Self)
fn sub_assign(&mut self, other: Self)
Disables all flags enabled in the set.
impl Copy for Cr0Flags
impl Eq for Cr0Flags
impl StructuralEq for Cr0Flags
impl StructuralPartialEq for Cr0Flags
Auto Trait Implementations
impl RefUnwindSafe for Cr0Flags
impl Send for Cr0Flags
impl Sync for Cr0Flags
impl Unpin for Cr0Flags
impl UnwindSafe for Cr0Flags
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