win32汇编的自加与VS的自加

wl1383838438 · 发表于 2020-5-8 23:16:19

本帖最后由 wl1383838438 于 2020-5-8 23:37 编辑

代码较短不在一一注释，疑惑请看上一篇！
#include<iostream>
using namespace std;
int main()
{
int a = 10;
a++;
cout << "a=" << a << endl;
getchar();
return 0;
}
win32汇编的自加与VS的自加

---------------------------------分割线------------------------
OD中的
win32汇编的自加与VS的自加

//--------------------------------分割线---------------------------
在看win32汇编模拟的（radasm和masm编译通过）
win32汇编的自加与VS的自加

386
.model flat, stdcall
option casemap:none;
include C:\masm32\include\windows.inc
include C:\masm32\include\user32.inc
includelib C:\masm32\lib\user32.lib
include C:\masm32\include\kernel32.inc
includelib C:\masm32\lib\kernel32.lib
.data
a       dd       10;等于od的 mov dword ptr ss:[ebp-0x8],0xa

szText byte    256 dup(?)
szCaption db       '标题',0
szfl    db       '%d'
;----------------------------
.data?
;----------------------------
.code
start:
      mov eax,a;等于 mov eax,dword ptr ss:[ebp-0x8]
      add eax,1;等于 add,eax,1
      ;mov a,eax;等于 mov dword ptr ss:[ebp-0x8],eax
      ;mov ecx,eax;通过测试注释掉2行也是可以的，
      push eax
      push offset szfl;q取出偏移地址压入堆栈
      push offset szText;取出偏移地址压入堆栈
      call wsprintf;
      ;---------------------
      push 0
      push offset szCaption
      push offset szText
      push 0
      call MessageBox
      ;---------------------
      push 0
      call ExitProcess
end start
//---------------------------------------------------------------------------分割线----
自增

.386
.model flat, stdcall
option casemap:none;
include C:\masm32\include\windows.inc
include C:\masm32\include\user32.inc
includelib C:\masm32\lib\user32.lib
include C:\masm32\include\kernel32.inc
includelib C:\masm32\lib\kernel32.lib
.data
a       dd       19;等于od的 mov dword ptr ss:[ebp-0x8],0xa

szText byte    256 dup(?)
szCaption db       '标题',0
szfl    db       '%d'
;----------------------------
.data?
;----------------------------
.code
start:
      inc a;自增
      push a

      push offset szfl;q取出偏移地址压入堆栈
      push offset szText;取出偏移地址压入堆栈
      call wsprintf;
      ;---------------------
      push 0
      push offset szCaption
      push offset szText
      push 0
      call MessageBox
      ;---------------------
      push 0
      call ExitProcess
end start

----------------------------------------------自减  ------------------------分割线
.386
.model flat, stdcall
option casemap:none;
include C:\masm32\include\windows.inc
include C:\masm32\include\user32.inc
includelib C:\masm32\lib\user32.lib
include C:\masm32\include\kernel32.inc
includelib C:\masm32\lib\kernel32.lib
.data
a       dd       19;等于od的 mov dword ptr ss:[ebp-0x8],0xa

szText byte    256 dup(?)
szCaption db       '标题',0
szfl    db       '%d'
;----------------------------
.data?
;----------------------------
.code
start:
      dec a;-------------------自减
      push a

      push offset szfl;q取出偏移地址压入堆栈
      push offset szText;取出偏移地址压入堆栈
      call wsprintf;
      ;---------------------
      push 0
      push offset szCaption
      push offset szText
      push 0
      call MessageBox
      ;---------------------
      push 0
      call ExitProcess
end start