Module protection

Available on x86 or x86-64 only.

Support for protected mode operation.

This includes the minimal support for segmented memory and hardware task management that is required to operate in protected mode with a flat memory model.

Structs

GateDescriptor

An entry in a segment descriptor table that points to an existing segment rather than defining a new one.

GateDescriptorFlags

Settings for GateDescriptors.

GenericDescriptor

Generic entry in a global/local/interrupt descriptor table. Can be a SegmentDescriptor or GateDescriptor, depending on the type flags.

GenericDescriptorFlags

Settings for GenericDescriptors.

GlobalDescriptorTableRegister

GDTR: Points to the memory range of the global descriptor table (GDT).

IOPermissionBitmap

Bitmap that controls which I/O port addresses are covered by privilege checks.

SegmentDescriptor

An entry in a segment descriptor table that defines a new segment. This includes code, data, task state (TSS), and local descriptor table (LDT) segments.

SegmentDescriptorFlags

Settings for SegmentDescriptors.

Selector

A reference to an entry in a segment descriptor table.

SystemDescriptorType

Discriminate types of segment descriptors that are not code or data.

Enums

LocalDescriptorTableRegister

LDTR: Contains a Selector referencing a SegmentDescriptor that points to the the local descriptor table (LDT).

SegmentRegister

Standard segment registers (CS, DS, SS, etc.), which contain Selectors.

TaskRegister

TR: Contains a Selector referencing a SegmentDescriptor that points to the current task state segment (TSS).

Traits

DescriptorFlags

Settings common to SegmentDescriptors and GateDescriptors.