S3C2410下WinCE6.0的启动过程详解

可以看到，这里开始了一个线程，线程处理函数为SystemStartupFunc()，其实现在文件C:\WINCE600\PRIVATE\WINCEOS\COREOS\NK\KERNEL\schedule.c，实现代码如下：

Code
//------------------------------------------------------------------------------
void
SystemStartupFunc(
ulongparam
)
{
HANDLEhTh;

//recordPendEventaddressforSetInterruptEvent
KInfoTable[KINX_PENDEVENTS]=(DWORD)&PendEvents1;

KernelInit2();

//adjustalarmresolutionifititsnotinbound
if(g_pOemGlobal->dwAlarmResolutiong_pOemGlobal->dwAlarmResolution=MIN_NKALARMRESOLUTION_MSEC;
elseif(g_pOemGlobal->dwAlarmResolution>MAX_NKALARMRESOLUTION_MSEC)
g_pOemGlobal->dwAlarmResolution=MAX_NKALARMRESOLUTION_MSEC;

VERIFY(LoaderInit());

//initializethecompiler/GScookie-thismusthappenbeforeotherthreads
//startrunning
__security_init_cookie();

PagePoolInit();

//Thiscanonlybedoneaftertheloaderinitialization
LoggerInit();//InitializationforCeLog,profiler,code-coverage,etc.
SysDebugInit();//initializeSystemDebugger(HWDebugstub,Kerneldumpcapture,SWKernelDebugstub)

//dothisnow,sothatwecontinuerunningafterwevecreatedthenewthread
#ifdefSTART_KERNEL_MONITOR_THREAD
hTh=CreateKernelThread(Monitor1,0,THREAD_RT_PRIORITY_ABOVE_NORMAL,0);
HNDLCloseHandle(g_pprcNK,hTh);
#endif

pCleanupThread=pCurThread;
hAlarmThreadWakeup=NKCreateEvent(0,0,0,0);
DEBUGCHK(hAlarmThreadWakeup);
InitializeCriticalSection(&rtccs);
IntrEvents[SYSINTR_RTC_ALARM-SYSINTR_DEVICES]=LockIntrEvt(hAlarmThreadWakeup);
DEBUGCHK(IntrEvents[SYSINTR_RTC_ALARM-SYSINTR_DEVICES]->phdIntr);

//GivetheOEMafinalchancetodoamorefull-featuredinitbeforeany
//appsarestarted
KernelIoctl(IOCTL_HAL_POSTINIT,NULL,0,NULL,0,NULL);

InitMsgQueue();
InitWatchDog();

//createthepowerhandlereventandguardthread
hEvtPwrHndlr=NKCreateEvent(NULL,FALSE,FALSE,NULL);
DEBUGCHK(hEvtPwrHndlr);
hTh=CreateKernelThread(PowerHandlerGuardThrd,NULL,THREAD_PWR_GUARD_PRIORITY,0);
HNDLCloseHandle(g_pprcNK,hTh);

//dirtypageevent,initiallyset
hEvtDirtyPage=NKCreateEvent(NULL,FALSE,TRUE,NULL);
DEBUGCHK(hEvtDirtyPage);

//wedontwanttowasteathreadhere(createaseparateforcleaningdirtypages).
//Instead,RunAppsthreadwillbecome"CleanDirtyPage"threadoncefilesysstarted
hTh=CreateKernelThread(RunApps,0,THREAD_RT_PRIORITY_NORMAL,0);
HNDLCloseHandle(g_pprcNK,hTh);

#defineONE_DAY86400000

while(1){
KCall((PKFN)SetThreadBasePrio,pCurThread,dwNKAlarmThrdPrio);
NKWaitForSingleObject(hAlarmThreadWakeup,ONE_DAY);
NKRefreshKernelAlarm();
PageOutIfNeeded();
}
}

这里创建了一个内核线程，处理函数为RunApps，继续跟踪RunApps，其实现在文件C:\WINCE600\PRIVATE\WINCEOS\COREOS\NK\KERNEL\kmisc.c中，代码如下：

Code
DWORDWINAPI
RunApps(
LPVOIDparam
)
{
HMODULEhFilesys;
DEBUGMSG(ZONE_ENTRY,(L"RunAppsstarted\r\n"));

CELOG_LaunchingFilesys();

hFilesys=(HMODULE)NKLoadLibraryEx(L"filesys.dll",MAKELONG(LOAD_LIBRARY_IN_KERNEL,LLIB_NO_PAGING),NULL);

if(hFilesys){
FARPROCpfnMain=GetProcAddressA(hFilesys,(LPCSTR)2);//WinMainoffilesys
HANDLEhFSReady,hTh;

DEBUGCHK(pfnMain);

hFSReady=NKCreateEvent(NULL,TRUE,FALSE,TEXT("SYSTEM/FSReady"));
hTh=CreateKernelThread((LPTHREAD_START_ROUTINE)pfnMain,hFilesys,THREAD_RT_PRIORITY_NORMAL,0);

DEBUGCHK(hTh&&hFSReady);
HNDLCloseHandle(g_pprcNK,hTh);

//IfpSignalStartedisNULL,wedonthavefilesys(tinykern).Dontbotherwaitingforit.
if(pSignalStarted){
NKWaitForSingleObject(hFSReady,INFINITE);

DEBUGCHK(SystemAPISets[SH_FILESYS_APIS]);

//InitializeMUI-Resourceloader(requiresregistry)
InitMUILanguages();

//Readsystemsettingsfromregistry
InitSystemSettings();

//signalfilesysthatweredone
(*pSignalStarted)(0);
}
HNDLCloseHandle(g_pprcNK,hFSReady);

}else{
RETAILMSG(1,(L"Filesysdoesntexist,noappstarted\r\n"));
}

//insteadofexiting,weremakethisthreadcleaningdirtypagesinthebackground.
CleanPagesInTheBackground();

//shouldveneverreturned
DEBUGCHK(0);
NKExitThread(0);

return0;
}