Module tartan_arch::x86_common::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.