Convert Kernelhwsrv package from SFL to EPL
kernel\eka\compsupp is subject to the ARM EABI LICENSE
userlibandfileserver\fatfilenameconversionplugins\unicodeTables is subject to the Unicode license
kernel\eka\kernel\zlib is subject to the zlib license
// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of the License "Eclipse Public License v1.0"
// which accompanies this distribution, and is available
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
//
// Initial Contributors:
// Nokia Corporation - initial contribution.
//
// Contributors:
//
// Description:
// e32\kernel\arm\cscmdatasave.cpp
// SCM - Arm portion
//
//
#define __INCLUDE_REG_OFFSETS__ // for SP_R13U in nk_plat.h
#include "arm_mem.h"
#include "nk_plat.h"
#include <scmdatatypes.h>
#include <scmdatasave.h>
/**
* Reads the CPU registers at the time of the crash
* @param aRegs struct to store the resulting CPU registers
*/
void SCMDataSave::ReadCPURegisters(SFullArmRegSet& aRegs)
{
aRegs =*(SFullArmRegSet*)iMonitor->iRegs;
}
/**
* Reads the user registers for a given thread - may not be the current thread
* @param aThread thread whose registers we want to read
* @param aRegs registers will be written here if available
* @return KErrArgument if aThread is the current thread or any of the system wide error codes
*/
TInt SCMDataSave::ReadUserRegisters(DThread* aThread, TArmRegSet& aRegs, TUint32& aAvailableRegs)
{
TFileName filename;
aThread->TraceAppendFullName(filename, EFalse);
//we retrieve the registers differently for the current thread
if(aThread == &Kern::CurrentThread())
{
return KErrArgument;
}
TUint32* stackPointer = (TUint32*)aThread->iNThread.iSavedSP; //Still need to check pointer somehow
TUint32* stackTop = (TUint32*)((TUint32)aThread->iNThread.iStackBase +(TUint32)aThread->iNThread.iStackSize);
TArmReg* out = (TArmReg*)(&aRegs);
//Get a pointer to this threads context table
NThread::TUserContextType type = aThread->iNThread.UserContextType();
const TArmContextElement* table = aThread->iNThread.UserContextTables()[type];
aAvailableRegs = 0;
for(TInt i = 0; i<KArmRegisterCount; ++i)
{
TInt value = table[i].iValue;
TInt type = table[i].iType;
if(type == TArmContextElement::EOffsetFromSp)
{
value = stackPointer[value];
aAvailableRegs |= (1<<i);
}
else if(type == TArmContextElement::EOffsetFromStackTop)
{
value = stackTop[-value];
aAvailableRegs |= (1<<i);
}
else if(type == TArmContextElement::ESpPlusOffset)
{
value = (TInt)(stackPointer + value);
aAvailableRegs |= (1<<i);
}
out[i] = value;
}
return KErrNone;
}
/**
* Reads the system registers for a given thread
* Can not be used on the current thread
* @param aThread
* @param aRegs
* @param aAvailableRegs
* @return KErrArgument if aThread is the current thread or any of the system wide error codes
*/
TInt SCMDataSave::ReadSystemRegisters(DThread* aThread, TArmRegSet& aRegs, TUint32& aAvailableRegs)
{
if(aThread == &Kern::CurrentThread())
{
return KErrArgument;
}
TFileName filename;
aThread->TraceAppendFullName(filename, EFalse);
TUint32* stackPointer = (TUint32*)aThread->iNThread.iSavedSP;
TUint32* stackTop = (TUint32*)((TUint32)aThread->iNThread.iStackBase +(TUint32)aThread->iNThread.iStackSize);
TArmReg* out = (TArmReg*)(&aRegs);
//Get a pointer to this threads context table
const TArmContextElement* table = aThread->iNThread.UserContextTables()[NThread::EContextKernel];
aAvailableRegs = 0;
for(TInt i = 0; i<KArmRegisterCount; ++i)
{
TInt value = table[i].iValue;
TInt type = table[i].iType;
if(type == TArmContextElement::EOffsetFromSp)
{
//ensure we are still on the stack
if(stackPointer + value >= stackTop)
continue;
value = stackPointer[value];
aAvailableRegs |= (1<<i);
}
else if(type == TArmContextElement::EOffsetFromStackTop)
{
//ensure we are still on the stack
if(stackTop - value < (TUint32*)aThread->iNThread.iStackBase)
continue;
value = stackTop[-value];
aAvailableRegs |= (1<<i);
}
else if(type == TArmContextElement::ESpPlusOffset)
{
value = (TInt)(stackPointer + value);
aAvailableRegs |= (1<<i);
}
out[i] = value;
}
return KErrNone;
}
//EOF