--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/nkern/x86/ncutils.cpp	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,267 @@
+// 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\nkern\x86\ncutils.cpp
+// 
+//
+
+#include <x86.h>
+
+//#define __DBG_MON_FAULT__
+//#define __RAM_LOADED_CODE__
+//#define __EARLY_DEBUG__
+
+
+void InitFpu();
+
+TUint32 ContextId()
+	{
+	switch(NKern::CurrentContext())
+		{
+	case NKern::EThread:
+		return (TUint32)NKern::CurrentThread();
+	case NKern::EIDFC:
+		return 3;
+	case NKern::EInterrupt:
+		return 2;
+	default:
+		return 0;
+		}
+	}
+
+EXPORT_C TBool BTrace::Out(TUint32 a0, TUint32 a1, TUint32 a2, TUint32 a3)
+	{
+	SBTraceData& traceData = BTraceData;
+	if(!traceData.iFilter[(a0>>BTrace::ECategoryIndex*8)&0xff])
+		return FALSE;
+
+	TUint32 pc = (&a0)[-1]; // return address on X86
+	return traceData.iHandler(a0,0,0,a1,a2,a3,0,pc);
+	}
+
+EXPORT_C TBool BTrace::OutX(TUint32 a0, TUint32 a1, TUint32 a2, TUint32 a3)
+	{
+	SBTraceData& traceData = BTraceData;
+	if(!traceData.iFilter[(a0>>BTrace::ECategoryIndex*8)&0xff])
+		return FALSE;
+
+	TUint32 context = ContextId();
+	TUint32 pc = (&a0)[-1]; // return address on X86
+	return traceData.iHandler(a0,0,context,a1,a2,a3,0,pc);
+	}
+
+EXPORT_C TBool BTrace::OutN(TUint32 a0, TUint32 a1, TUint32 a2, const TAny* aData, TInt aDataSize)
+	{
+	SBTraceData& traceData = BTraceData;
+	if(!traceData.iFilter[(a0>>BTrace::ECategoryIndex*8)&0xff])
+		return FALSE;
+
+	if(TUint(aDataSize)>KMaxBTraceDataArray)
+		{
+		aDataSize = KMaxBTraceDataArray;
+		a0 |= BTrace::ERecordTruncated<<(BTrace::EFlagsIndex*8);
+		}
+	a0 += aDataSize<<(BTrace::ESizeIndex*8);
+
+	TUint32 pc = (&a0)[-1]; // return address on X86
+	if(!aDataSize)
+		return traceData.iHandler(a0,0,0,a1,a2,0,0,pc);
+	else if(aDataSize<=4)
+		return traceData.iHandler(a0,0,0,a1,a2,*(TUint32*)aData,0,pc);
+	else
+		return traceData.iHandler(a0,0,0,a1,a2,(TUint32)aData,0,pc);
+	}
+
+EXPORT_C TBool BTrace::OutNX(TUint32 a0, TUint32 a1, TUint32 a2, const TAny* aData, TInt aDataSize)
+	{
+	SBTraceData& traceData = BTraceData;
+	if(!traceData.iFilter[(a0>>BTrace::ECategoryIndex*8)&0xff])
+		return FALSE;
+
+	if(TUint(aDataSize)>KMaxBTraceDataArray)
+		{
+		aDataSize = KMaxBTraceDataArray;
+		a0 |= BTrace::ERecordTruncated<<(BTrace::EFlagsIndex*8);
+		}
+	a0 += aDataSize<<(BTrace::ESizeIndex*8);
+
+	TUint32 context = ContextId();
+	TUint32 pc = (&a0)[-1]; // return address on X86
+	if(!aDataSize)
+		return traceData.iHandler(a0,0,context,a1,a2,0,0,pc);
+	else if(aDataSize<=4)
+		return traceData.iHandler(a0,0,context,a1,a2,*(TUint32*)aData,0,pc);
+	else
+		return traceData.iHandler(a0,0,context,a1,a2,(TUint32)aData,0,pc);
+	}
+
+EXPORT_C TBool BTrace::OutBig(TUint32 a0, TUint32 a1, const TAny* aData, TInt aDataSize)
+	{
+	TUint32 context = ContextId();
+	TUint32 pc = (&a0)[-1]; // return address on X86
+	SBTraceData& traceData = BTraceData;
+	if(!traceData.iFilter[(a0>>BTrace::ECategoryIndex*8)&0xff])
+		return FALSE;
+	return DoOutBig(a0,a1,aData,aDataSize,context,pc);
+	}
+
+EXPORT_C TBool BTrace::OutFiltered(TUint32 a0, TUint32 a1, TUint32 a2, TUint32 a3)
+	{
+	SBTraceData& traceData = BTraceData;
+	if(!traceData.iFilter[(a0>>BTrace::ECategoryIndex*8)&0xff])
+		return FALSE;
+	if(!traceData.CheckFilter2(a1))
+		return FALSE;
+
+	TUint32 pc = (&a0)[-1]; // return address on X86
+	return traceData.iHandler(a0,0,0,a1,a2,a3,0,pc);
+	}
+
+EXPORT_C TBool BTrace::OutFilteredX(TUint32 a0, TUint32 a1, TUint32 a2, TUint32 a3)
+	{
+	SBTraceData& traceData = BTraceData;
+	if(!traceData.iFilter[(a0>>BTrace::ECategoryIndex*8)&0xff])
+		return FALSE;
+	if(!traceData.CheckFilter2(a1))
+		return FALSE;
+
+	TUint32 context = ContextId();
+	TUint32 pc = (&a0)[-1]; // return address on X86
+	return traceData.iHandler(a0,0,context,a1,a2,a3,0,pc);
+	}
+
+EXPORT_C TBool BTrace::OutFilteredN(TUint32 a0, TUint32 a1, TUint32 a2, const TAny* aData, TInt aDataSize)
+	{
+	SBTraceData& traceData = BTraceData;
+	if(!traceData.iFilter[(a0>>BTrace::ECategoryIndex*8)&0xff])
+		return FALSE;
+	if(!traceData.CheckFilter2(a1))
+		return FALSE;
+
+	if(TUint(aDataSize)>KMaxBTraceDataArray)
+		{
+		aDataSize = KMaxBTraceDataArray;
+		a0 |= BTrace::ERecordTruncated<<(BTrace::EFlagsIndex*8);
+		}
+	a0 += aDataSize<<(BTrace::ESizeIndex*8);
+
+	TUint32 pc = (&a0)[-1]; // return address on X86
+	if(!aDataSize)
+		return traceData.iHandler(a0,0,0,a1,a2,0,0,pc);
+	else if(aDataSize<=4)
+		return traceData.iHandler(a0,0,0,a1,a2,*(TUint32*)aData,0,pc);
+	else
+		return traceData.iHandler(a0,0,0,a1,a2,(TUint32)aData,0,pc);
+	}
+
+EXPORT_C TBool BTrace::OutFilteredNX(TUint32 a0, TUint32 a1, TUint32 a2, const TAny* aData, TInt aDataSize)
+	{
+	SBTraceData& traceData = BTraceData;
+	if(!traceData.iFilter[(a0>>BTrace::ECategoryIndex*8)&0xff])
+		return FALSE;
+	if(!traceData.CheckFilter2(a1))
+		return FALSE;
+
+	if(TUint(aDataSize)>KMaxBTraceDataArray)
+		{
+		aDataSize = KMaxBTraceDataArray;
+		a0 |= BTrace::ERecordTruncated<<(BTrace::EFlagsIndex*8);
+		}
+	a0 += aDataSize<<(BTrace::ESizeIndex*8);
+
+	TUint32 context = ContextId();
+	TUint32 pc = (&a0)[-1]; // return address on X86
+	if(!aDataSize)
+		return traceData.iHandler(a0,0,context,a1,a2,0,0,pc);
+	else if(aDataSize<=4)
+		return traceData.iHandler(a0,0,context,a1,a2,*(TUint32*)aData,0,pc);
+	else
+		return traceData.iHandler(a0,0,context,a1,a2,(TUint32)aData,0,pc);
+	}
+
+EXPORT_C TBool BTrace::OutFilteredBig(TUint32 a0, TUint32 a1, const TAny* aData, TInt aDataSize)
+	{
+	TUint32 context = ContextId();
+	TUint32 pc = (&a0)[-1]; // return address on X86
+	SBTraceData& traceData = BTraceData;
+	if(!traceData.iFilter[(a0>>BTrace::ECategoryIndex*8)&0xff])
+		return FALSE;
+	if(!traceData.CheckFilter2(a1))
+		return FALSE;
+	return DoOutBig(a0,a1,aData,aDataSize,context,pc);
+	}
+
+EXPORT_C TBool BTrace::OutFilteredPcFormatBig(TUint32 aHeader, TUint32 aModuleUid, TUint32 aPc, TUint16 aFormatId, const TAny* aData, TInt aDataSize)
+	{
+	return EFalse; //kernel side not implemented yet
+	}
+
+
+TInt BTraceDefaultControl(BTrace::TControl /*aFunction*/, TAny* /*aArg1*/, TAny* /*aArg2*/)
+	{
+	return KErrNotSupported;
+	}
+
+
+EXPORT_C void BTrace::SetHandlers(BTrace::THandler aNewHandler, BTrace::TControlFunction aNewControl, BTrace::THandler& aOldHandler, BTrace::TControlFunction& aOldControl)
+	{
+	TUint irq = NKern::DisableAllInterrupts();
+
+	aOldHandler = BTraceData.iHandler;
+	BTraceData.iHandler = aNewHandler;
+	TheScheduler.iBTraceHandler = aNewHandler;
+
+	aOldControl = BTraceData.iControl;
+	BTraceData.iControl = aNewControl ? aNewControl : BTraceDefaultControl;
+
+	NKern::RestoreInterrupts(irq);
+	}
+
+
+EXPORT_C TInt BTrace::SetFilter(TUint aCategory, TInt aValue)
+	{
+	if(!IsSupported(aCategory))
+		return KErrNotSupported;
+	TUint8* filter = BTraceData.iFilter+aCategory;
+	TUint oldValue = *filter;
+	if(TUint(aValue)<=1u)
+		{
+		*filter = (TUint8)aValue;
+		BTraceContext4(BTrace::EMetaTrace, BTrace::EMetaTraceFilterChange, (TUint8)aCategory | (aValue<<8));
+		if(aCategory==ECpuUsage)
+			{
+			TheScheduler.iCpuUsageFilter = (TUint8)aValue;
+			}
+		}
+	return oldValue;
+	}
+
+EXPORT_C SCpuIdleHandler* NKern::CpuIdleHandler()
+	{
+	return &::CpuIdleHandler;
+	}
+
+void NKern::Init0(TAny*)
+	{
+	InitFpu();
+	}
+
+EXPORT_C TUint32 NKern::CpuTimeMeasFreq()
+	{
+#ifdef MONITOR_THREAD_CPU_TIME
+	return 1862000000;	// FIXME!!!!
+#else
+	return 0;
+#endif
+	}
+