为啥同一个程序，单步执行和debug执行出现的结果不一样呢？

我不是女神ヾ 2023-03-04 06:34 45阅读 0赞

![20200801160823407.png][]

代码：

assume cs:codesg
    codesg segment
    	dw 0123h,0456h,0789h,0abch,0defh,0fedh,0cbah,0987h
    	dw 0,0,0,0,0,0,0,0,0,0
    	
    start:mov ax,cs
    	  mov ss,ax
    	  mov sp,30h
    	  
    	  mov ax,0
    	  mov ds,ax
    	  mov bx,0
    	  mov cx,8
     s0:  push [bx]
    	  pop cs:[bx]
     
    	  add bx,2
    	  loop s0
    	
    	mov ax,4c00h
    	int 21h
    codesg ends
    end start

### 首先，测试正确的： ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjg1OTI4MA_size_16_color_FFFFFF_t_70][]

### 测试单步执行： ###

\-t -p都不行。这里试一下-p吧。

1，

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjg1OTI4MA_size_16_color_FFFFFF_t_70 1][]

如此下去，出现结果：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjg1OTI4MA_size_16_color_FFFFFF_t_70 2][]

为什么呢？

[20200801160823407.png]: /images/20230208/56a8e34430ee43058160ba4f2c7f46a6.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjg1OTI4MA_size_16_color_FFFFFF_t_70]: /images/20230208/9d7be7cd1f29458399f84509ffac1262.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjg1OTI4MA_size_16_color_FFFFFF_t_70 1]: /images/20230208/f3036051119b42759c82c5dd8c13754a.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjg1OTI4MA_size_16_color_FFFFFF_t_70 2]: /images/20230208/3ce26d34653e408495eabf198f0918df.png