1) Swapping to c++ instead of assembly implementations of several kernel APIs to avoid calling probably broken implementations of __EH_FRAME_?? macros
2) Commenting out otherwise unavoidable calls to __EH_FRAME_?? macros in uc_exe.cia. This is a temporary hack.
Both changes to see if they get past an early kernel panic in the Syborg ROM from the current build:
EH ERROR: no exception descriptor for address 0x801eb277
Thread efile.exe::Main Panic USER-EXEC 3
// Copyright (c) 1994-2009 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\memmodel\epoc\direct\x86\xkernel.cpp
//
//
#include <x86_mem.h>
/********************************************
* Thread
********************************************/
TInt DX86PlatThread::SetupContext(SThreadCreateInfo& anInfo)
{
return KErrNone;
}
DX86PlatProcess::DX86PlatProcess()
{}
DX86PlatProcess::~DX86PlatProcess()
{
__KTRACE_OPT(KMMU,Kern::Printf("DX86PlatProcess destruct"));
DMemModelProcess::Destruct();
}
TBool Exc::IsMagic(TLinAddr /*anAddress*/)
//
// Return TRUE if anAddress is a 'magic' exception handling instruction
//
{
return EFalse;
}
void DThread::IpcExcHandler(TExcTrap* aTrap, DThread* aThread, TAny* aContext)
{
aThread->iIpcClient = 0;
TIpcExcTrap& xt=*(TIpcExcTrap*)aTrap;
TX86ExcInfo& info=*(TX86ExcInfo*)aContext;
if (info.iExcId==EX86VectorPageFault)
{
TLinAddr va=(TLinAddr)info.iFaultAddress;
if (va>=xt.iRemoteBase && (va-xt.iRemoteBase)<xt.iSize)
xt.Exception(KErrBadDescriptor); // problem accessing remote address - 'leave' so an error code will be returned
if (xt.iLocalBase && va>=xt.iLocalBase && (va-xt.iLocalBase)<xt.iSize)
NKern::UnlockSystem(); // problem accessing local address - return and panic current thread as usual
}
// otherwise return and fault kernel
}