Struct sunrise_kernel::i386::registers::eflags::EFlags

pub struct EFlags {
    bits: u32,
}

The EFLAGS register.

Fields

bits: u32

Implementations

impl EFlags

pub const ID: EFlags

Processor feature identification flag.

If this flag is modifiable, the CPU supports CPUID.

pub const VIRTUAL_INTERRUPT_PENDING: EFlags

Indicates that an external, maskable interrupt is pending.

Used when virtual-8086 mode extensions (CR4.VME) or protected-mode virtual interrupts (CR4.PVI) are activated.

pub const VIRTUAL_INTERRUPT: EFlags

Virtual image of the INTERRUPT_FLAG bit.

Used when virtual-8086 mode extensions (CR4.VME) or protected-mode virtual interrupts (CR4.PVI) are activated.

pub const ALIGNMENT_CHECK: EFlags

Enable automatic alignment checking if CR0.AM is set. Only works if CPL is 3.

pub const VIRTUAL_8086_MODE: EFlags

Enable the virtual-8086 mode.

pub const RESUME_FLAG: EFlags

Allows to restart an instruction following an instrucion breakpoint.

pub const NESTED_TASK: EFlags

Used by iret in hardware task switch mode to determine if current task is nested.

pub const IOPL_HIGH: EFlags

The high bit of the I/O Privilege Level field.

Specifies the privilege level required for executing I/O address-space instructions.

pub const IOPL_LOW: EFlags

The low bit of the I/O Privilege Level field.

Specifies the privilege level required for executing I/O address-space instructions.

pub const OVERFLOW_FLAG: EFlags

Set by hardware to indicate that the sign bit of the result of the last signed integer operation differs from the source operands.

pub const DIRECTION_FLAG: EFlags

Determines the order in which strings are processed.

pub const INTERRUPT_FLAG: EFlags

Enable interrupts.

pub const TRAP_FLAG: EFlags

Enable single-step mode for debugging.

pub const SIGN_FLAG: EFlags

Set by hardware if last arithmetic operation resulted in a negative value.

pub const ZERO_FLAG: EFlags

Set by hardware if last arithmetic operation resulted in a zero value.

pub const AUXILIARY_CARRY_FLAG: EFlags

Set by hardware if last arithmetic operation generated a carry ouf of bit 3 of the result.

pub const PARITY_FLAG: EFlags

Set by hardware if last result has an even number of 1 bits (only for some operations).

pub const CARRY_FLAG: EFlags

Set by hardware if last arithmetic operation generated a carry out of the most-significant bit of the result.

pub const fn empty() -> EFlags

Returns an empty set of flags

pub const fn all() -> EFlags

Returns the set containing all flags.

pub const fn bits(&self) -> u32

Returns the raw value of the flags currently stored.

pub fn from_bits(bits: u32) -> Option<EFlags>

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

pub const fn from_bits_truncate(bits: u32) -> EFlags

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

pub const fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

pub const fn is_all(&self) -> bool

Returns true if all flags are currently set.

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

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

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

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

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

Inserts the specified flags in-place.

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

Removes the specified flags in-place.

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

Toggles the specified flags in-place.

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

Inserts or removes the specified flags depending on the passed value.

Trait Implementations

impl Binary for EFlags

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

Formats the value using the given formatter.

impl BitAnd<EFlags> for EFlags

type Output = EFlags

The resulting type after applying the & operator.

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

Returns the intersection between the two sets of flags.

impl BitAndAssign<EFlags> for EFlags

fn bitand_assign(&mut self, other: EFlags)

Disables all flags disabled in the set.

impl BitOr<EFlags> for EFlags

type Output = EFlags

The resulting type after applying the | operator.

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

Returns the union of the two sets of flags.

impl BitOrAssign<EFlags> for EFlags

fn bitor_assign(&mut self, other: EFlags)

Adds the set of flags.

impl BitXor<EFlags> for EFlags

type Output = EFlags

The resulting type after applying the ^ operator.

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

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

impl BitXorAssign<EFlags> for EFlags

fn bitxor_assign(&mut self, other: EFlags)

Toggles the set of flags.

impl Clone for EFlags

fn clone(&self) -> EFlags

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for EFlags

impl Debug for EFlags

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

Formats the value using the given formatter.

impl Eq for EFlags

impl Extend<EFlags> for EFlags

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

Extends a collection with the contents of an iterator.

impl FromIterator<EFlags> for EFlags

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

Creates a value from an iterator.

impl Hash for EFlags

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

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl LowerHex for EFlags

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

Formats the value using the given formatter.

impl Not for EFlags

type Output = EFlags

The resulting type after applying the ! operator.

fn not(self) -> EFlags

Returns the complement of this set of flags.

impl Octal for EFlags

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

Formats the value using the given formatter.

impl Ord for EFlags

fn cmp(&self, other: &EFlags) -> Ordering

This method returns an [Ordering] between self and other.

#[must_use]fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]fn clamp(self, min: Self, max: Self) -> Self

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

Restrict a value to a certain interval.

impl PartialEq<EFlags> for EFlags

fn eq(&self, other: &EFlags) -> bool

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

fn ne(&self, other: &EFlags) -> bool

This method tests for !=.

impl PartialOrd<EFlags> for EFlags

fn partial_cmp(&self, other: &EFlags) -> Option<Ordering>

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

fn lt(&self, other: &EFlags) -> bool

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

fn le(&self, other: &EFlags) -> bool

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

fn gt(&self, other: &EFlags) -> bool

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

fn ge(&self, other: &EFlags) -> bool

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

impl StructuralEq for EFlags

impl StructuralPartialEq for EFlags

impl Sub<EFlags> for EFlags

type Output = EFlags

The resulting type after applying the - operator.

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

Returns the set difference of the two sets of flags.

impl SubAssign<EFlags> for EFlags

fn sub_assign(&mut self, other: EFlags)

Disables all flags enabled in the set.

impl UpperHex for EFlags

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

Formats the value using the given formatter.