这是发生了那种异常或中断呢？

图：

代码的改动：这次改变了加载idt, gdt的顺序，并在初始化gdt的汇编代码中使用了长跳转指令，屏幕上显示了ignore（我设置的所有哑中断），也不知发生了哪种异常而宕机。

void init_gdtidt(void)
{
   struct SEGMENT_DESCRIPTOR *gdt = (struct SEGMENT_DESCRIPTOR *) 0x1000; //0x00270000;
   struct GATE_DESCRIPTOR *idt = (struct GATE_DESCRIPTOR *) 0x0;//0x0026f800;
   newdesc = (struct mydesc *) gdt;
   nidtdesc = (struct mydesc *) idt;
   int i;

   for (i = 0; i < 8192; i++) {
       set_segmdesc(gdt + i, 0, 0, 0);
   }
   set_segmdesc(gdt + 1, 0xffffffff, 0x00000000, 0x4092);
   set_segmdesc(gdt + 2, 0xffffffff, 0x00000000, 0x409a);

   for (i = 0; i < 256; i++) {
       set_gatedesc(idt + i, (int) asm_inthandler_all, 0x10, 0x8e);
   }
   load_idtr(0x7ff, 0x0);
   set_gatedesc(idt + 0x21, (int) asm_inthandler21, 2 * 8, 0x8e);
   set_gatedesc(idt + 0x27, (int) asm_inthandler27, 2 * 8, 0x8e);
   set_gatedesc(idt + 0x2c, (int) asm_inthandler2c, 2 * 8, 0x8e);

load_gdtr(0x1fff, 0x1000);
return;
}

void set_segmdesc(struct SEGMENT_DESCRIPTOR *sd, unsigned int limit, int base, int ar)
{
   if (limit > 0xfffff) {
       ar |= 0x8000;
       limit /= 0x1000;
   }
   sd->limit_low = limit & 0xffff;
   sd->base_low = base & 0xffff;
   sd->base_mid = (base >> 16) & 0xff;
   sd->access_right = ar & 0xff;
   sd->limit_high = ((limit >> 16) & 0x0f) | ((ar >> 8) & 0xf0);
   sd->base_high = (base >> 24) & 0xff;
   return;
}

_load_gdtr:       ; void load_gdtr(int limit, int addr);
   mov       ax,[esp+4]       ; limit
   mov       [esp+6],ax
   lgdt   [esp+6]



   mov eax, 0x8
   mov ds, eax
   mov es, eax
   mov fs, eax
   mov gs, eax
   mov ss, eax
   mov esp, stack_start

   jmp dword 0x10 : mystart
mystart:

   mov eax, cs
   mov [_cs], eax
   mov eax, ds
   mov [_ds], eax

ret

这是发生了那种异常或中断呢？

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