问题请教，怎样得到构成一个函数的所有指令所占内存的大小

[whz_time]

举例说明：
int __stdcall Addup(int n)
{
int sum = 0;
int i = n;
for(i = n; i >= 0; i--)
{
sum += i;
}
return sum;
}

void *p = Addup;

现在我想知道从“p”开始，在这以后多少字节是函数“Addup”的指令，怎样知道这部分内存的大小

[DentistryDoctor]

看编译生成的map文件吧。

[stoneyrh]

好象有这样一种方法：
把Addup函数声明为static的，紧接其后再声明一个static的函数，名字自定，这个函数体为空即可。然后用后面的函数名减去前面的函数名，即地址相关，就可得前面函数所占的代码空间。

[蒋晟]

//拷贝线程体
dwThreadSize = (int)AfterThreadFuncAttach - (int)ThreadFuncAttach + 1024 + sizeof(INJECTLIBINFO);

pRemoteThread = VirtualAllocEx(hRemoteProcess,NULL,dwThreadSize,MEM_COMMIT,PAGE_READWRITE);
if(pRemoteThread == NULL)
{
MessageBox(NULL,_T("Failed to Allocate Memory at Remote Process for Thread Code.Err = ") + SysErrorMessage(GetLastError()),
NULL,MB_OK | MB_APPLMODAL | MB_ICONWARNING);
return;
}
dwRet = WriteProcessMemory(hRemoteProcess,pRemoteThread,(LPVOID)ThreadFuncAttach,dwThreadSize,&dwWriten);
if(dwRet == 0)
{
MessageBox(NULL,_T("Failed to Write Thread Code to Remote Process.Err = ") + SysErrorMessage(GetLastError()),
NULL,MB_OK | MB_APPLMODAL | MB_ICONWARNING);
return;
}
//启动远程线程
HANDLE hRemoteThread;

hRemoteThread = CreateRemoteThread(hRemoteProcess,0,0,(DWORD(__stdcall *)(VOID*))pRemoteThread,(INJECTLIBINFO*)pRemoteParam,0,&dwWriten);
::WaitForSingleObject(hRemoteThread,INFINITE);

if(hRemoteThread == NULL)
{
MessageBox(NULL,_T("Failed to create unload thread.Err=") + SysErrorMessage(GetLastError()),NULL,MB_OK |MB_APPLMODAL | MB_ICONWARNING);
}
else
{
;
}

//远程线程，用来装载DLL
static DWORD WINAPI ThreadFuncAttach(INJECTLIBINFO *pInfo)
{
HINSTANCE hDll=NULL;
pInfo->dwReturnValue = 0;
hDll = (HINSTANCE)pInfo->pfnLoadLibrary(pInfo->szDllName);
if(hDll == NULL)
pInfo->dwReturnValue = pInfo->pfnGetLastError();
return((DWORD)hDll);
}

//---------------------------------------------------------------------------
//占位函数，用来计算ThreadFuncAttach的大小
static void AfterThreadFuncAttach(void)
{
}


http://blog.csdn.net/jiangsheng/archive/2003/11/09/3789.aspx