- gdt[GDT_ENTRY_TSS].a = 0x00000067 | (tss << 16);
- gdt[GDT_ENTRY_TSS].b = 0x00008900 | (tss & 0xFF000000)
- | ((tss >> 16) & 0x000000FF);
+ gdt[GDT_ENTRY_TSS].a = 0;
+ gdt[GDT_ENTRY_TSS].b = 0;
+
+ gdt[GDT_ENTRY_TSS].limit0 = 0x67;
+ gdt[GDT_ENTRY_TSS].base0 = tss & 0xFFFF;
+ gdt[GDT_ENTRY_TSS].base1 = (tss >> 16) & 0xFF;
+ gdt[GDT_ENTRY_TSS].base2 = tss >> 24;
+ gdt[GDT_ENTRY_TSS].type = 0x9; /* 32-bit TSS (available) */
+ gdt[GDT_ENTRY_TSS].p = 0x1; /* Entry is present */
+ gdt[GDT_ENTRY_TSS].dpl = 0x0; /* Privilege level 0 */
+ gdt[GDT_ENTRY_TSS].s = 0x0; /* system segment */
+