Struct SegmentDescriptorFlags

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

Available on x86 or x86-64 only.

Settings for SegmentDescriptors.

Implementations

impl SegmentDescriptorFlags

pub fn os_defined(&self) -> bool

AVL: Ignored bit that can be used by the operating system.

Does not apply to call gates.

pub fn granularity(&self) -> bool

G: Indicates that the segment limit is in units of 4KB. Otherwise, it is in bytes.

pub fn set_os_defined(&mut self, value: bool)

AVL: Ignored bit that can be used by the operating system.

Does not apply to call gates.

pub fn with_os_defined(&mut self, value: bool) -> Self

AVL: Ignored bit that can be used by the operating system.

Does not apply to call gates.

pub fn set_granularity(&mut self, value: bool)

G: Indicates that the segment limit is in units of 4KB. Otherwise, it is in bytes.

pub fn with_granularity(&mut self, value: bool) -> Self

G: Indicates that the segment limit is in units of 4KB. Otherwise, it is in bytes.

Trait Implementations

impl Bitfield<u32> for SegmentDescriptorFlags

fn new(value: T) -> Self

Construct a new bitfield type from its underlying representation

fn value(self) -> T

Unwrap the bitfield into its underlying representation

impl Clone for SegmentDescriptorFlags

fn clone(&self) -> SegmentDescriptorFlags

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SegmentDescriptorFlags

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

Formats the value using the given formatter.

impl Default for SegmentDescriptorFlags

fn default() -> SegmentDescriptorFlags

Returns the “default value” for a type.

impl DescriptorFlags for SegmentDescriptorFlags

fn system_type(&self) -> SystemDescriptorType

If this is a system descriptor, indicates which type.

fn application_accessed(&self) -> bool

The processor sets this bit whenever a segment register points to this segment.

fn code_readable(&self) -> bool

If this is a code descriptor, indicates that the segment can be read. Otherwise, it is execute-only.

fn data_writable(&self) -> bool

If this is a data descriptor, indicates that this segment is writable.

fn code_conforming(&self) -> bool

If this is a code descriptor, indicates that this segment can be executed with lower privileges than privilege_level.

fn data_expand_down(&self) -> bool

If this is a data descriptor, indicates that the segment expands toward lower addresses (stack-like) if its limit is changed.

fn is_code(&self) -> bool

Indicates whether this is a code (true) or data (false) descriptor.

fn is_application(&self) -> bool

S: Indicates that this is an application section descriptor if true. Otherwise, this is a system descriptor.

fn privilege_level(&self) -> u8

DPL: The privilege level associated with the segment.

fn present(&self) -> bool

P: Indicates that the segment is defined.

fn code_mode_64(&self) -> bool

Available on x86-64 only.

L: If this is a code segment, indicates that it should be executed in 64-bit mode.

fn application_mode_32(&self) -> bool

D/B: Indicates that the segment uses 32-bit mode. Otherwise, it is 16-bit, unless code_mode_64 is set.

fn set_system_type(&mut self, value: SystemDescriptorType)

If this is a system descriptor, indicates which type.

fn with_system_type(&self, value: SystemDescriptorType) -> Self

If this is a system descriptor, indicates which type.

fn set_application_accessed(&mut self, value: bool)

The processor sets this bit whenever a segment register points to this segment.

fn with_application_accessed(&mut self, value: bool) -> Self

The processor sets this bit whenever a segment register points to this segment.

fn set_code_readable(&mut self, value: bool)

If this is a code descriptor, indicates that the segment can be read. Otherwise, it is execute-only.

fn with_code_readable(&mut self, value: bool) -> Self

If this is a code descriptor, indicates that the segment can be read. Otherwise, it is execute-only.

fn set_data_writable(&mut self, value: bool)

If this is a data descriptor, indicates that this segment is writable.

fn with_data_writable(&mut self, value: bool) -> Self

If this is a data descriptor, indicates that this segment is writable.

fn set_code_conforming(&mut self, value: bool)

If this is a code descriptor, indicates that this segment can be executed with lower privileges than privilege_level.

fn with_code_conforming(&mut self, value: bool) -> Self

If this is a code descriptor, indicates that this segment can be executed with lower privileges than privilege_level.

fn set_data_expand_down(&mut self, value: bool)

If this is a data descriptor, indicates that the segment expands toward lower addresses (stack-like) if its limit is changed.

fn with_data_expand_down(&mut self, value: bool) -> Self

If this is a data descriptor, indicates that the segment expands toward lower addresses (stack-like) if its limit is changed.

fn set_is_code(&mut self, value: bool)

Indicates whether this is a code (true) or data (false) descriptor.

fn with_is_code(&mut self, value: bool) -> Self

Indicates whether this is a code (true) or data (false) descriptor.

fn set_is_application(&mut self, value: bool)

S: Indicates that this is an application section descriptor if true. Otherwise, this is a system descriptor.

fn with_is_application(&mut self, value: bool) -> Self

S: Indicates that this is an application section descriptor if true. Otherwise, this is a system descriptor.

fn set_privilege_level(&mut self, value: u8)

DPL: The privilege level associated with the segment.

fn with_privilege_level(&self, value: u8) -> Self

DPL: The privilege level associated with the segment.

fn set_present(&mut self, value: bool)

P: Indicates that the segment is defined.

fn with_present(&mut self, value: bool) -> Self

P: Indicates that the segment is defined.

fn set_code_mode_64(&mut self, value: bool)

Available on x86-64 only.

L: If this is a code segment, indicates that it should be executed in 64-bit mode.

fn with_code_mode_64(&mut self, value: bool) -> Self

Available on x86-64 only.

L: If this is a code segment, indicates that it should be executed in 64-bit mode.

fn set_application_mode_32(&mut self, value: bool)

D/B: Indicates that the segment uses 32-bit mode. Otherwise, it is 16-bit, unless code_mode_64 is set.

fn with_application_mode_32(&mut self, value: bool) -> Self

D/B: Indicates that the segment uses 32-bit mode. Otherwise, it is 16-bit, unless code_mode_64 is set.

fn fmt_fields(&self, f: &mut DebugStruct<'_, '_>)

Print this object’s bitfield values. Helper method for Debug implementations.

fn is_gate(&self) -> bool

Indicates that this is a GateDescriptor.

impl From<SegmentDescriptorFlags> for u32

fn from(val: SegmentDescriptorFlags) -> Self

Converts to this type from the input type.

impl From<u32> for SegmentDescriptorFlags

fn from(val: u32) -> Self

Converts to this type from the input type.

impl PartialEq for SegmentDescriptorFlags

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for SegmentDescriptorFlags

impl Eq for SegmentDescriptorFlags

impl StructuralPartialEq for SegmentDescriptorFlags