关于进入64BIT LONG MODE的问题

写了个例子从软盘启动进入64BIT 的LONG MODE 的COMPATIABLE MODE下

可老是重启,大家看看可能会是什么问题???

bits 16
org 0x7c00
jmp Main
; ----------------------------------------------------------------------------------------------
BootDrive db 0x00
; ----------------------------------------------------------------------------------------------
GDT_Tables:
   GDT_Null:
Null_Discriptor1 dd 0x00
Null_Discriptor2 dd 0x00

   GDT_CodeSegment_Address equ $-GDT_Tables
   GDT_CodeSegment:
  dw 0xffff
  dw 0x0000
  db 0x00
  db 10011010b
  db 11001111b
  db 0x00

   GDT_DataSegment_Address equ $-GDT_Tables
   GDT_DataSegment:
  dw 0xffff
  dw 0x0000
  db 0x00
  db 10010010b
  db 11001111b
  db 0x00
GDT64_CodeSegment_Address_Temp equ $-GDT_Tables
   GDT64_CodeSegment_Temp:
  dd 0x0000
  db 0x00
  db 10011010b
  db 00100000b
  db 0x00
GDT_End:
GDT_Address:
  dw GDT_End-GDT_Tables-1
  dd GDT_Tables

IDT_Address:
IDT_Address_Limit dw IDT_End-IDT_Tables-1
IDT_Address_Base  dd IDT_Tables

IDT_Tables:

IDT_Discriptor:
IDT_TargetCodeSegmentOffset1   dw 0x0000
IDT_TargetCodeSegmentSelector  dw 0x0000
IDT_Attribute                  dw 0x0e00
IDT_TargetCodeSegmentOffset2   dw 0x0000
IDT_End:
; --------------------------------------------------------------------------------------
Main:
Get_Kernel:
cli
xor ax,ax
mov ds, ax
mov ss, ax
mov sp, 0xffff

Mask_All_IRQ:
mov al,255
out 0xa1,al
out 0x21,al

Enable_A20:

Enable_A20_First:
in al,0x64
test al,2
jnz Enable_A20_First
mov al,0xd1
out 0x64,al
Enable_A20_Second:
in al,0x64
test al,2
jnz Enable_A20_Second
mov al,0xdf
out 0x60,al
cli
cld    
        lgdt [GDT_Address]
lidt [IDT_Address]                                            
mov eax,0x11                                                                      
        mov cr0,eax    

        jmp GDT_CodeSegment_Address:Code_32  

[BITS 32]
Code_32:
mov ax,GDT_DataSegment_Address
mov ds,ax
mov es,ax
mov ss,ax
mov fs,ax
mov gs,ax
mov esp,0xffff  
        
;jmp GDT_CodeSegment_Address:code32Main ; 跳入内核

;code32Main:
cld
Store_4Kbyte_PML4E:
mov edi,0x900000 ;PDPE base address.
mov eax,0x910000 ;PDE base address.
add eax,0x07  ;PDPE attribute.
mov ecx,1  ;PDPE count.
Store_512_4Kbytes_PML4E:
stosd
    ;"add edi,0x04" is no need,because EDI is auto-add.
;add eax,0x08*0x1000 ;Pointer to next one.
;loop Store_512_4Kbytes_PDPE

Store_4Kbyte_PDPE:
mov edi,0x910000 ;PDPE base address.
mov eax,0x920000 ;PDE base address.
add eax,0x07  ;PDPE attribute.
mov ecx,1  ;PDPE count.
Store_512_4Kbytes_PDPE:
stosd
    ;"add edi,0x04" is no need,because EDI is auto-add.
;add eax,0x08*0x1000 ;Pointer to next one.
;loop Store_512_4Kbytes_PDPE

Store_4Kbyte_PDE:
mov edi,0x920000 ;PDE base address.
mov eax,0x930000 ;PTE base address.
add eax,0x07  ;PDE attribute.
mov ecx,511  ;PDE count.
Store_512_4Kbytes_PDE:
stosd
;add eax,0x08*0x1000  ;Pointer to next one.  
;loop Store_512_4Kbytes_PDE

Store_4Kbyte_PTE:
mov edi,0x930000 ;PTE base address.
mov eax,0x000000  ;Page base address.
add eax,0x07  ;PTE attribute.
mov ecx,511  ;PTE count.
Store_512_4Kbytes_PTE:
stosd
add edi,0x04  ;PDE of 4K-bytes page PAE is 64-bits(8bytes).
add eax,0x1000  ;Pointer to next one.  
loop Store_512_4Kbytes_PTE


; Enable the 64-bit page-translation-table entries by
; setting CR4.PAE=1 (this is _required_ before activating
; long mode). Paging is not enabled until after long mode
; is enabled.
mov eax,cr4        
bts eax,5
mov cr4,eax


;
; Create the long-mode page tables, and initialize the
; 64-bit CR3 (page-table base address) to point to the base
; of the PML4 page table. The PML4 page table must be located
; below 4 Gbytes because only 32 bits of CR3 are loaded when
; the processor is not in 64-bit mode.
      mov   eax,0x900000           ; page directory location

      mov   cr3,eax

     ; mov   eax,cr0                ; Read CR0.

      ;or    eax,0x80000000

      ;mov   cr0,eax              ; enable page
      mov ecx,0xc0000080      ; EFER MSR number.
rdmsr                   ; Read EFER.
bts eax,8               ; Set LME=1.
wrmsr                   ; Write EFER.

; Enable paging to activate long mode (set CR0.PG=1)
;
     mov eax, cr0 ; Read CR0.
     bts eax, 31 ; Set PE=1.
     mov cr0, eax ; Write CR0.

      jmp   GDT64_CodeSegment_Address_Temp:pb32

bits 64
pb32:

;mov al,0x30
;call Hex2ASCII
;mov [0xb8000],al
sti
jmp $

老大，给我个64位的CPU吧

哎，可惜我对Assemble不熟悉，帮不了忙啊。