用VC重写汇编程序
zzz在学习 Windows环境下32位汇编语言程序设计 这本书,获益匪浅,但是里面程序都是汇编写的,看着头大,所以自己试验一下用VC重写一下例程,发现确实是能用,但是最终生成的程序和汇编直接写成的程序还是有很大区别的,我是用的控制台方式重写的,编译完成以后发现开一个程序竟然会有两个窗口,一个是我写的窗口,一个是控制台的窗口,看来VC在我们自己的代码外面又额外的加了很多东西啊。
改写的是firstwindow这个程序,汇编源代码如下
基本上是把汇编的代码重写了一下,重写的过程中需要变量类型和函数返回类型的问题,因为在汇编下用到的数据类型无非db dw dd几种,很简单,但是在VC下就需要准确确定变量和函数返回类型,需要注意的地方如下:改写的是firstwindow这个程序,汇编源代码如下
Code
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; Sample code for < Win32ASM Programming >
; by 罗云彬, http://asm.yeah.net
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; FirstWindow.asm
; 窗口程序的模板代码
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; 使用 nmake 或下列命令进行编译和链接:
; ml /c /coff FirstWindow.asm
; Link /subsystem:windows FirstWindow.obj
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
.386
.model flat,stdcall
option casemap:none
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; Include 文件定义
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
include windows.inc
include gdi32.inc
includelib gdi32.lib
include user32.inc
includelib user32.lib
include kernel32.inc
includelib kernel32.lib
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; 数据段
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
.data?
hInstance dd ?
hWinMain dd ?
.const
szClassName db 'MyClass',0
szCaptionMain db 'My first Window !',0
szText db 'Win32 Assembly, Simple and powerful !',0
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; 代码段
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
.code
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; 窗口过程
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
_ProcWinMain proc uses ebx edi esi,hWnd,uMsg,wParam,lParam
local @stPs:PAINTSTRUCT
local @stRect:RECT
local @hDc
mov eax,uMsg
;********************************************************************
.if eax == WM_PAINT
invoke BeginPaint,hWnd,addr @stPs
mov @hDc,eax
invoke GetClientRect,hWnd,addr @stRect
invoke DrawText,@hDc,addr szText,-1,\
addr @stRect,\
DT_SINGLELINE or DT_CENTER or DT_VCENTER
invoke EndPaint,hWnd,addr @stPs
;********************************************************************
.elseif eax == WM_CLOSE
invoke DestroyWindow,hWinMain
invoke PostQuitMessage,NULL
;********************************************************************
.else
invoke DefWindowProc,hWnd,uMsg,wParam,lParam
ret
.endif
;********************************************************************
xor eax,eax
ret
_ProcWinMain endp
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
_WinMain proc
local @stWndClass:WNDCLASSEX
local @stMsg:MSG
invoke GetModuleHandle,NULL
mov hInstance,eax
invoke RtlZeroMemory,addr @stWndClass,sizeof @stWndClass
;********************************************************************
; 注册窗口类
;********************************************************************
invoke LoadCursor,0,IDC_ARROW
mov @stWndClass.hCursor,eax
push hInstance
pop @stWndClass.hInstance
mov @stWndClass.cbSize,sizeof WNDCLASSEX
mov @stWndClass.style,CS_HREDRAW or CS_VREDRAW
mov @stWndClass.lpfnWndProc,offset _ProcWinMain
mov @stWndClass.hbrBackground,COLOR_WINDOW + 1
mov @stWndClass.lpszClassName,offset szClassName
invoke RegisterClassEx,addr @stWndClass
;********************************************************************
; 建立并显示窗口
;********************************************************************
invoke CreateWindowEx,WS_EX_CLIENTEDGE,offset szClassName,offset szCaptionMain,\
WS_OVERLAPPEDWINDOW,\
100,100,600,400,\
NULL,NULL,hInstance,NULL
mov hWinMain,eax
invoke ShowWindow,hWinMain,SW_SHOWNORMAL
invoke UpdateWindow,hWinMain
;********************************************************************
; 消息循环
;********************************************************************
.while TRUE
invoke GetMessage,addr @stMsg,NULL,0,0
.break .if eax == 0
invoke TranslateMessage,addr @stMsg
invoke DispatchMessage,addr @stMsg
.endw
ret
_WinMain endp
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
start:
call _WinMain
invoke ExitProcess,NULL
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
end start
VC重写的代码如下
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; Sample code for < Win32ASM Programming >
; by 罗云彬, http://asm.yeah.net
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; FirstWindow.asm
; 窗口程序的模板代码
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; 使用 nmake 或下列命令进行编译和链接:
; ml /c /coff FirstWindow.asm
; Link /subsystem:windows FirstWindow.obj
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
.386
.model flat,stdcall
option casemap:none
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; Include 文件定义
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
include windows.inc
include gdi32.inc
includelib gdi32.lib
include user32.inc
includelib user32.lib
include kernel32.inc
includelib kernel32.lib
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; 数据段
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
.data?
hInstance dd ?
hWinMain dd ?
.const
szClassName db 'MyClass',0
szCaptionMain db 'My first Window !',0
szText db 'Win32 Assembly, Simple and powerful !',0
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; 代码段
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
.code
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; 窗口过程
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
_ProcWinMain proc uses ebx edi esi,hWnd,uMsg,wParam,lParam
local @stPs:PAINTSTRUCT
local @stRect:RECT
local @hDc
mov eax,uMsg
;********************************************************************
.if eax == WM_PAINT
invoke BeginPaint,hWnd,addr @stPs
mov @hDc,eax
invoke GetClientRect,hWnd,addr @stRect
invoke DrawText,@hDc,addr szText,-1,\
addr @stRect,\
DT_SINGLELINE or DT_CENTER or DT_VCENTER
invoke EndPaint,hWnd,addr @stPs
;********************************************************************
.elseif eax == WM_CLOSE
invoke DestroyWindow,hWinMain
invoke PostQuitMessage,NULL
;********************************************************************
.else
invoke DefWindowProc,hWnd,uMsg,wParam,lParam
ret
.endif
;********************************************************************
xor eax,eax
ret
_ProcWinMain endp
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
_WinMain proc
local @stWndClass:WNDCLASSEX
local @stMsg:MSG
invoke GetModuleHandle,NULL
mov hInstance,eax
invoke RtlZeroMemory,addr @stWndClass,sizeof @stWndClass
;********************************************************************
; 注册窗口类
;********************************************************************
invoke LoadCursor,0,IDC_ARROW
mov @stWndClass.hCursor,eax
push hInstance
pop @stWndClass.hInstance
mov @stWndClass.cbSize,sizeof WNDCLASSEX
mov @stWndClass.style,CS_HREDRAW or CS_VREDRAW
mov @stWndClass.lpfnWndProc,offset _ProcWinMain
mov @stWndClass.hbrBackground,COLOR_WINDOW + 1
mov @stWndClass.lpszClassName,offset szClassName
invoke RegisterClassEx,addr @stWndClass
;********************************************************************
; 建立并显示窗口
;********************************************************************
invoke CreateWindowEx,WS_EX_CLIENTEDGE,offset szClassName,offset szCaptionMain,\
WS_OVERLAPPEDWINDOW,\
100,100,600,400,\
NULL,NULL,hInstance,NULL
mov hWinMain,eax
invoke ShowWindow,hWinMain,SW_SHOWNORMAL
invoke UpdateWindow,hWinMain
;********************************************************************
; 消息循环
;********************************************************************
.while TRUE
invoke GetMessage,addr @stMsg,NULL,0,0
.break .if eax == 0
invoke TranslateMessage,addr @stMsg
invoke DispatchMessage,addr @stMsg
.endw
ret
_WinMain endp
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
start:
call _WinMain
invoke ExitProcess,NULL
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
end start
Code
#include <windows.h>
#include <iostream.h>
HINSTANCE hInstance;
HWND hWinMain;
LRESULT CALLBACK _procWinMain(HWND,UINT,WPARAM,LPARAM);
void _winmain()
{
WNDCLASSEX stWndClass;
MSG stMsg;
hInstance=GetModuleHandle(NULL);
RtlZeroMemory(&stWndClass,sizeof(stWndClass));//WNDCLASSEX结构置零
//注册窗口类
stWndClass.hCursor=::LoadCursor(0,IDC_ARROW);
stWndClass.hInstance=hInstance;
stWndClass.cbSize=sizeof(WNDCLASSEX);
stWndClass.style=CS_HREDRAW||CS_VREDRAW;
stWndClass.lpfnWndProc=_procWinMain;
stWndClass.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH);
stWndClass.lpszClassName="myclass";
::RegisterClassEx(&stWndClass);
//建立并显示窗口
hWinMain=::CreateWindowEx(WS_EX_CLIENTEDGE,"myclass","firstwindow",WS_OVERLAPPEDWINDOW,100,100,600,400,NULL,NULL,hInstance,NULL);
::ShowWindow(hWinMain,SW_SHOWNORMAL);
::UpdateWindow(hWinMain);
//消息循环
while(1)
{
if(::GetMessage(&stMsg,NULL,0,0)==0)//消息为WM_QUIT
break;
else
{
::TranslateMessage(&stMsg);
::DispatchMessage(&stMsg);
}
}
return;
}
LRESULT CALLBACK _procWinMain(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam)
{
if(uMsg==WM_CLOSE)
{
MessageBox(NULL,"close!","close",MB_OK);
::DestroyWindow(hWinMain);
::PostQuitMessage(NULL);
return 0;
}
else
{
return ::DefWindowProc(hWnd,uMsg,wParam,lParam);
}
}
void main()
{
cout<<"start firstwindow"<<endl;
_winmain();
cout<<"close firstwindow"<<endl;
char t;
cin>>t;
ExitProcess(NULL);
//cout<<_procWinMain<<endl;
//cout<<_winmain<<endl;
}
#include <windows.h>
#include <iostream.h>
HINSTANCE hInstance;
HWND hWinMain;
LRESULT CALLBACK _procWinMain(HWND,UINT,WPARAM,LPARAM);
void _winmain()
{
WNDCLASSEX stWndClass;
MSG stMsg;
hInstance=GetModuleHandle(NULL);
RtlZeroMemory(&stWndClass,sizeof(stWndClass));//WNDCLASSEX结构置零
//注册窗口类
stWndClass.hCursor=::LoadCursor(0,IDC_ARROW);
stWndClass.hInstance=hInstance;
stWndClass.cbSize=sizeof(WNDCLASSEX);
stWndClass.style=CS_HREDRAW||CS_VREDRAW;
stWndClass.lpfnWndProc=_procWinMain;
stWndClass.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH);
stWndClass.lpszClassName="myclass";
::RegisterClassEx(&stWndClass);
//建立并显示窗口
hWinMain=::CreateWindowEx(WS_EX_CLIENTEDGE,"myclass","firstwindow",WS_OVERLAPPEDWINDOW,100,100,600,400,NULL,NULL,hInstance,NULL);
::ShowWindow(hWinMain,SW_SHOWNORMAL);
::UpdateWindow(hWinMain);
//消息循环
while(1)
{
if(::GetMessage(&stMsg,NULL,0,0)==0)//消息为WM_QUIT
break;
else
{
::TranslateMessage(&stMsg);
::DispatchMessage(&stMsg);
}
}
return;
}
LRESULT CALLBACK _procWinMain(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam)
{
if(uMsg==WM_CLOSE)
{
MessageBox(NULL,"close!","close",MB_OK);
::DestroyWindow(hWinMain);
::PostQuitMessage(NULL);
return 0;
}
else
{
return ::DefWindowProc(hWnd,uMsg,wParam,lParam);
}
}
void main()
{
cout<<"start firstwindow"<<endl;
_winmain();
cout<<"close firstwindow"<<endl;
char t;
cin>>t;
ExitProcess(NULL);
//cout<<_procWinMain<<endl;
//cout<<_winmain<<endl;
}
LRESULT CALLBACK _procWinMain(HWND,UINT,WPARAM,LPARAM); 消息处理函数的返回值为LRESULT CALLBACK,传入的变量类型依次为HWND,UINT,WPARAM,LPARAM
HINSTANCE hInstance;实例的变量类型为HINSTANCE
HWND hWinMain;窗口句柄类型为HWND
VC例程实现的功能和汇编的不同,被我改动了一下,VC实现的只是用户在关闭窗口时会弹出一个提示对话框,然后关闭窗口,没有汇编程序的在窗口输出文本的功能。