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// Copyright (c) 2004-2010 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// Kernel Event handler for Run Mode Debug.
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//
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#include <e32def.h>
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#include <e32def_private.h>
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#include <e32cmn.h>
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#include <e32cmn_private.h>
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#include <kernel/arm/arm.h>
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#include <kernel/kernel.h>
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#include <kernel/kern_priv.h>
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#include <nk_trace.h>
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#include <rm_debug_api.h>
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#include "debug_logging.h"
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#include "d_process_tracker.h"
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#include "d_rmd_stepping.h"
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#include "rm_debug_kerneldriver.h"
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#include "rm_debug_driver.h"
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#include "rm_debug_eventhandler.h"
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DRM_DebugEventHandler::DRM_DebugEventHandler()
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: DKernelEventHandler(EventHandler, this)
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{
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LOG_MSG("DRM_DebugEventHandler::DRM_DebugEventHandler()");
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for(TInt i=0; i<EEventLimit; i++)
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{
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iEventHandlers[i] = &DRM_DebugChannel::HandleUnsupportedEvent;
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}
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iEventHandlers[EEventUserTrace] = &DRM_DebugChannel::HandleUserTrace;
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iEventHandlers[EEventRemoveLibrary] = &DRM_DebugChannel::RemoveLibrary;
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iEventHandlers[EEventAddLibrary] = &DRM_DebugChannel::AddLibrary;
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iEventHandlers[EEventStartThread] = &DRM_DebugChannel::StartThread;
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iEventHandlers[EEventSwExc] = &DRM_DebugChannel::HandleSwException;
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iEventHandlers[EEventHwExc] = &DRM_DebugChannel::HandleHwException;
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iEventHandlers[EEventKillThread] = &DRM_DebugChannel::HandleEventKillThread;
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iEventHandlers[EEventAddProcess] = &DRM_DebugChannel::HandleAddProcessEvent;
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iEventHandlers[EEventRemoveProcess] = &DRM_DebugChannel::HandleRemoveProcessEvent;
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}
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TInt DRM_DebugEventHandler::Create(DLogicalDevice* aDevice, DLogicalChannel* aChannel, DThread* aClient)
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{
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LOG_MSG3("DRM_DebugEventHandler::Create(), aClientthread=0x%08x id=%d", aClient, aClient->iId);
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TInt err;
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err = aDevice->Open();
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if (err != KErrNone)
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return err;
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iDevice = aDevice;
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iChannel = (DRM_DebugChannel*)aChannel; //Don't add ref the channel, since channel closes the event handler before it ever gets destroyed.
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err = aClient->Open();
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if (err != KErrNone)
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return err;
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iClientThread = aClient;
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// Use a semaphore to protect our data structures from concurrent access.
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err = Kern::SemaphoreCreate(iProtectionLock, _L("RM_DebugEventHandlerLock"), 1 /* Initial count */);
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if (err != KErrNone)
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return err;
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return Add();
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}
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DRM_DebugEventHandler::~DRM_DebugEventHandler()
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{
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LOG_MSG("DRM_DebugEventHandler::~DRM_DebugEventHandler()");
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if (iProtectionLock)
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iProtectionLock->Close(NULL);
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if (iDevice)
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iDevice->Close(NULL);
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if (iClientThread)
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Kern::SafeClose((DObject*&)iClientThread, NULL);
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}
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TInt DRM_DebugEventHandler::Start()
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{
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LOG_MSG("DRM_DebugEventHandler::Start()");
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iTracking = ETrue;
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return KErrNone;
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}
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TInt DRM_DebugEventHandler::Stop()
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{
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LOG_MSG("DRM_DebugEventHandler::Stop()");
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iTracking = EFalse;
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return KErrNone;
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}
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TUint DRM_DebugEventHandler::EventHandler(TKernelEvent aType, TAny* a1, TAny* a2, TAny* aThis)
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{
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return ((DRM_DebugEventHandler*)aThis)->HandleEvent(aType, a1, a2);
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}
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TUint DRM_DebugEventHandler::HandleEvent(TKernelEvent aType, TAny* a1, TAny* a2)
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{
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/*
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* Check if we are tracking things at all OR
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* this event is beyond the limit of known events OR
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* this event is from the debug thread itself (don't want to debug ourselves) OR
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* this event has a handler (there is no point in proceeding without a handler)
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*/
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if( (!iTracking) ||
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(aType > (TUint32)EEventLimit) ||
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(iClientThread == &Kern::CurrentThread()) ||
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(iEventHandlers[aType] == &DRM_DebugChannel::HandleUnsupportedEvent) )
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{
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return ERunNext;
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}
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return HandleSpecificEvent(aType,a1,a2) && aType == EEventHwExc ? EExcHandled : ERunNext;
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}
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TBool DRM_DebugEventHandler::HandleSpecificEvent(TKernelEvent aType, TAny* a1, TAny* a2)
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{
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TBool ret = EFalse;
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NKern::ThreadEnterCS();
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LockDataAccess();
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if (iChannel)
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{
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ret = (iChannel->*(iEventHandlers[aType]))(a1, a2);
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}
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ReleaseDataAccess();
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NKern::ThreadLeaveCS();
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switch(aType)
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{
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case EEventHwExc:
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case EEventKillThread:
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{
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LOG_MSG2("DRM_DebugEventHandler::HandleEvent() -> FSWait(), kernel event type: %d", (TUint32)aType);
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TheDProcessTracker.FSWait();
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LOG_MSG("DRM_DebugEventHandler::HandleEvent() <- FSWait()");
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break;
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}
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default:
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break;
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}
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return ret;
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}
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