tartan_kernel::arch::x86_common

Struct GlobalDescriptorTable

Source 
struct GlobalDescriptorTable {
    pub null_segment: SegmentDescriptor,
    pub code_segment: SegmentDescriptor,
    pub data_segment: SegmentDescriptor,
    pub task_state_segment: SegmentDescriptor,
}
Expand description

Global descriptor table structure specific to Tartan OS.

Fields§

§null_segment: SegmentDescriptor

Dummy descriptor for segment index 0. The processor always treats index 0 as a null value, so this descriptor is ignored.

§code_segment: SegmentDescriptor

Main code segment that covers all memory, used by CS.

§data_segment: SegmentDescriptor

Main data that covers all memory, used by everything but CS.

§task_state_segment: SegmentDescriptor

Sole task state segment required by task register.

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