<bochs:1> c
<bochs:2> info gdt
Global Descriptor Table (base=0x000000000003f000, limit=1023): (GDTR信息)
GDT[0x00]=??? descriptor hi=0x00000000, lo=0x00000000 (GDT表第一项不用,每位设置为0)
GDT[0x01]=Code segment, base=0x00000000, limit=0xffffffff, Execute/Read, 32-bit
GDT[0x02]=Data segment, base=0x00000000, limit=0xffffffff, Read/Write,
GDT[0x03]=Code segment, base=0x00000000, limit=0xffffffff, Execute/Rea
GDT[0x04]=Data segment, base=0x00000000, limit=0xffffffff, Read/Write
GDT[0x05]=32-Bit TSS (Busy) at 0x00024460, length 0x00077
GDT[0x06]=Data segment, base=0x00000000, limit=0x00001fff, Read/Write
GDT[0x07]=Data segment, base=0x00000000, limit=0x00000fff, Read/Write,
GDT[0x08]=Data segment, base=0x00000400, limit=0x0000ffff, Read/Write
GDT[0x09]=??? descriptor hi=0x00000000, lo=0x00000000
GDT[0x0a]=32-Bit TSS (Available) at 0x00023b7e, length 0x0006f
GDT[0x0b]=Code segment, base=0x00020000, limit=0x0000ffff, Execute/Read, 16-bit
<bochs:3> info idt
Interrupt Descriptor Table (base=0x000000008003f400, limit=2047 (IDTR 信息)
IDT[0x00]=32-Bit Interrupt Gate target=0x0008:0x80408bff, DPL=0
IDT[0x01]=32-Bit Interrupt Gate target=0x0008:0x80408d7c, DPL=0
<bochs:4> info gdt 0 2
Global Descriptor Table (base=0x000000000003f000, limit=1023):
GDT[0x00]=??? descriptor hi=0x00000000, lo=0x00000000
GDT[0x01]=Code segment, base=0x00000000, limit=0xffffffff, Execute/Read, Accesse
GDT[0x02]=Data segment, base=0x00000000, limit=0xffffffff, Read/Write, Accessed
GDT[0x03]=Code segment, base=0x00000000, limit=0xffffffff, Execute/Read, 32-bit
kd> r gdtr
gdtr=8003f000 (注意这时已经打开分页机制,基地址是虚拟地址)
kd> r gdtl
gdtl=000003ff
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