#include "gdt.h"

#include "core.h"

namespace GDT {

// The static 32-bit Global Descriptor Table (GDT)
alignas(16) constinit SegmentDescriptor protected_mode[] = {
    // Null descriptor
    {},

    // Global code segment von 0-4GB
    SegmentDescriptor::Segment(0, UINT32_MAX, true, 0, SIZE_32BIT),

    // Global data segment von 0-4GB
    SegmentDescriptor::Segment(0, UINT32_MAX, false, 0, SIZE_32BIT),
};
extern "C" constexpr Pointer gdt_protected_mode_pointer(protected_mode);

// The static 64-bit Global Descriptor Table (GDT)
// \see [ISDMv3 3.2.4 Segmentation in IA-32e
// Mode](intel_manual_vol3.pdf#page=91)
alignas(16) constinit SegmentDescriptor long_mode[] = {
    // Null descriptor
    SegmentDescriptor::Null(),

    // Global code segment
    SegmentDescriptor::Segment64(true, 0),

    // Global data segment
    SegmentDescriptor::Segment64(false, 0),

};
extern "C" constexpr Pointer gdt_long_mode_pointer(long_mode);

}  // namespace GDT