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// Copyright (c) 2005-2009 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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// e32\drivers\trace\btrace.cpp
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//
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//
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#include <kernel/kern_priv.h>
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#include "platform.h"
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#include "drivers/btrace.h"
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#if defined(__EPOC32__) && defined(__CPU_X86)
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#include <x86.h>
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#endif
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TBTraceBufferK Buffer;
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TBool ChannelOpen = EFalse;
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const TUint KCopyBufferMaxSize = 0x10000;
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TInt TBTraceBufferK::Create(TInt aSize)
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{
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if(aSize<=0)
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return KErrArgument;
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TUint pageSize = Kern::RoundToPageSize(1);
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aSize = (aSize+pageSize-1)&-(TInt)pageSize;
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TUint recordOffsets = aSize+pageSize;
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TUint recordOffsetsSize = Kern::RoundToPageSize(aSize>>2);
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TUint copyBuffer = recordOffsets+recordOffsetsSize+pageSize;
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TUint copyBufferSize = Kern::RoundToPageSize(aSize>>2);
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if(copyBufferSize>KCopyBufferMaxSize)
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copyBufferSize = KCopyBufferMaxSize;
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TUint chunkSize = copyBuffer+copyBufferSize+pageSize;
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// Create chunk...
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TChunkCreateInfo info;
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info.iType = TChunkCreateInfo::ESharedKernelSingle;
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info.iMaxSize = chunkSize;
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#ifdef __EPOC32__
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// we want full caching, no execute, default sharing
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new (&info.iMapAttr) TMappingAttributes2(EMemAttNormalCached, EFalse, ETrue);
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#endif
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info.iOwnsMemory = ETrue; // Use memory from system's free pool
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info.iDestroyedDfc = NULL;
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TUint32 mapAttr;
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TInt r = Kern::ChunkCreate(info, iBufferChunk, iAddress, mapAttr);
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if(r==KErrNone)
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r = Kern::ChunkCommit(iBufferChunk, 0, aSize);
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if(r==KErrNone)
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r = Kern::ChunkCommit(iBufferChunk, recordOffsets, recordOffsetsSize);
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if(r==KErrNone)
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r = Kern::ChunkCommit(iBufferChunk, copyBuffer, copyBufferSize);
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// Check errors...
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if(r!=KErrNone)
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{
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Close();
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return r;
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}
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// Initialise state...
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iStart = sizeof(TBTraceBuffer);
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iEnd = aSize;
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iRecordOffsets = (TUint8*)(iAddress+recordOffsets);
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TBTraceBuffer* userBuffer = (TBTraceBuffer*)iAddress;
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userBuffer->iRecordOffsets = recordOffsets;
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userBuffer->iCopyBuffer = copyBuffer;
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userBuffer->iCopyBufferSize = copyBufferSize;
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Reset(0);
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#ifndef __SMP__
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TInt irq = NKern::DisableAllInterrupts();
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#endif
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iTimestamp2Enabled = EFalse;
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BTrace::SetHandlers(TBTraceBufferK::Trace,TBTraceBufferK::ControlFunction,iOldBTraceHandler,iOldBTraceControl);
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#ifndef __SMP__
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NKern::RestoreInterrupts(irq);
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#endif
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return KErrNone;
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}
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void TBTraceBufferK::Close()
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{
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#ifdef __SMP__
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if(iOldBTraceHandler)
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{
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BTrace::THandler handler;
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BTrace::TControlFunction control;
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BTrace::SetHandlers(iOldBTraceHandler,iOldBTraceControl,handler,control);
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iOldBTraceHandler = NULL;
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iOldBTraceControl = NULL;
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}
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TSpinLock* sl = BTrace::LockPtr();
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TInt irq = sl->LockIrqSave(); // guarantees handler can't run at the same time
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DChunk* chunk = iBufferChunk;
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iBufferChunk = NULL;
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iAddress = NULL;
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sl->UnlockIrqRestore(irq);
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#else
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TInt irq = NKern::DisableAllInterrupts();
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if(iOldBTraceHandler)
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{
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BTrace::THandler handler;
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BTrace::TControlFunction control;
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BTrace::SetHandlers(iOldBTraceHandler,iOldBTraceControl,handler,control);
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iOldBTraceHandler = NULL;
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iOldBTraceControl = NULL;
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}
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DChunk* chunk = iBufferChunk;
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iBufferChunk = NULL;
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iAddress = NULL;
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NKern::RestoreInterrupts(irq);
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#endif
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if(chunk)
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Kern::ChunkClose(chunk);
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}
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/**
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Helper functions for encoding pseudo- floating point values recoverable by:
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int exponent = (signed char)(encoded_val >> 24);
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int mantissa = encoded_val & 0xFFFFFF;
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double val = mantissa * pow(2, exponent);
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*/
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TUint EncodeFloatesque(TUint64 val64, TInt exponent)
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{
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// Lose precision until it fits in 24 bits
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TInt round_up = 0;
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while (val64>=0x1000000)
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{
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round_up = (TInt)(val64&1);
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val64 >>= 1;
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exponent++;
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}
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if (round_up)
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{
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val64++;
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if (val64>=0x1000000)
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{
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val64 >>= 1;
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exponent++;
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}
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}
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// Return 8-bit exponent and 24-bit mantissa
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return (TUint)(val64 | (((unsigned char)exponent)<<24));
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}
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TUint EncodeReciprocal(TUint val)
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{
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if (val==0) return val;
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// Get reciprocal * 2^64
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TUint64 val64 = val;
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TUint64 div = 0;
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div--;
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val64 = div / val64;
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return EncodeFloatesque(val64, -64);
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}
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TUint EncodePostDiv(TUint val, TUint divisor)
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{
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TUint64 val64 = val;
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val64 <<= 32;
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val64 = val64 / divisor;
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return EncodeFloatesque(val64, -32);
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}
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void BTracePrimeMetatrace()
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{
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#ifdef __SMP__
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TUint period1 = EncodeReciprocal(NKern::TimestampFrequency());
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TUint period2 = period1 + (32u<<24); // timestamp2 period is 2^32 * timestamp1 period
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BTrace12(BTrace::EMetaTrace, BTrace::EMetaTraceTimestampsInfo, period1, period2, 1);
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#else
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TUint period1 = EncodeReciprocal(NKern::FastCounterFrequency());
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TUint period2 = EncodePostDiv(NKern::TickPeriod(), 1000000);
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BTrace12(BTrace::EMetaTrace, BTrace::EMetaTraceTimestampsInfo, period1, period2, 0);
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#endif
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}
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void TBTraceBufferK::Reset(TUint aMode)
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{
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#ifdef __SMP__
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TSpinLock* sl = BTrace::LockPtr();
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#endif
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TInt irq = __SPIN_LOCK_IRQSAVE(*sl); // guarantees handler can't run at the same time
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iHead = iStart;
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TBTraceBuffer* userBuffer = (TBTraceBuffer*)iAddress;
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userBuffer->iStart = iStart;
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userBuffer->iEnd = iEnd;
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userBuffer->iHead = iHead;
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userBuffer->iTail = iHead;
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userBuffer->iGeneration = 0;
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userBuffer->iMode = aMode;
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__SPIN_UNLOCK_IRQRESTORE(*sl,irq);
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if(aMode)
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{
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if (BTrace::CheckFilter(BTrace::EMetaTrace))
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BTracePrimeMetatrace();
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BTrace::Prime();
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}
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}
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TInt TBTraceBufferK::RequestData(TInt aSize, TDfc* aDfc)
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{
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if(aSize<=0)
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aSize = 1;
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#ifdef __SMP__
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TSpinLock* sl = BTrace::LockPtr();
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#endif
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TInt irq = __SPIN_LOCK_IRQSAVE(*sl); // guarantees handler can't run
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TBTraceBuffer* userBuffer = (TBTraceBuffer*)iAddress;
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if(!userBuffer)
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{
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__SPIN_UNLOCK_IRQRESTORE(*sl,irq);
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return KErrNotReady;
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}
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TInt dif = userBuffer->iTail-iHead;
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if(dif>0)
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aSize = 0; // we need no more bytes because all bytes to end of buffer are available
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else
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aSize += dif; // number of bytes extra we need
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if(aSize>0)
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{
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iRequestDataSize = aSize;
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iWaitingDfc = aDfc;
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}
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__SPIN_UNLOCK_IRQRESTORE(*sl,irq);
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if(aSize<=0)
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return KErrCompletion;
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return KErrNone;
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}
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#ifndef BTRACE_DRIVER_MACHINE_CODED
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TBool TBTraceBufferK::Trace_Impl(TUint32 aHeader,TUint32 aHeader2,const TUint32 aContext,const TUint32 a1,const TUint32 a2,const TUint32 a3,const TUint32 aExtra, const TUint32 aPc, TBool aIncTimestamp2)
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{
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#ifndef __SMP__
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TInt irq = NKern::DisableAllInterrupts();
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#endif
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#ifdef __SMP__
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// Header 2 always present and contains CPU number
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// If Header2 not originally there, add 4 to size
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if (!(aHeader&(BTrace::EHeader2Present<<BTrace::EFlagsIndex*8)))
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aHeader += (4<<BTrace::ESizeIndex*8) + (BTrace::EHeader2Present<<BTrace::EFlagsIndex*8), aHeader2=0;
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aHeader2 = (aHeader2 &~ BTrace::ECpuIdMask) | (NKern::CurrentCpu()<<20);
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#endif
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#ifdef BTRACE_INCLUDE_TIMESTAMPS
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// Add timestamp to trace...
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#if defined(__SMP__)
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aHeader += 8<<BTrace::ESizeIndex*8;
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aHeader |= BTrace::ETimestampPresent<<BTrace::EFlagsIndex*8 | BTrace::ETimestamp2Present<<BTrace::EFlagsIndex*8;
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TUint64 timeStamp = NKern::Timestamp();
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#elif defined(__EPOC32__) && defined(__CPU_X86)
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aHeader += 8<<BTrace::ESizeIndex*8;
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aHeader |= BTrace::ETimestampPresent<<BTrace::EFlagsIndex*8 | BTrace::ETimestamp2Present<<BTrace::EFlagsIndex*8;
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TUint64 timeStamp = X86::Timestamp();
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#else
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TUint32 timeStamp = NKern::FastCounter();
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TUint32 timeStamp2 = 0;
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if (aIncTimestamp2)
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{
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timeStamp2 = NKern::TickCount();
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aHeader += 8<<BTrace::ESizeIndex*8;
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aHeader |= (BTrace::ETimestampPresent | BTrace::ETimestamp2Present) << BTrace::EFlagsIndex*8;
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}
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else
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{
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aHeader += 4<<BTrace::ESizeIndex*8;
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aHeader |= BTrace::ETimestampPresent<<BTrace::EFlagsIndex*8;
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}
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#endif
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#endif
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TUint size = (aHeader+3)&0xfc;
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TBTraceBufferK& buffer = Buffer;
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TLinAddr address = buffer.iAddress;
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TBTraceBuffer& user_buffer = *(TBTraceBuffer*)address;
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++user_buffer.iGeneration; // atomic not required since only driver modifies iGeneration
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#ifdef __SMP__
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__e32_memory_barrier();
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#endif
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TUint start = buffer.iStart;
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TUint end = buffer.iEnd;
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TUint orig_head = buffer.iHead;
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TInt requestDataSize = buffer.iRequestDataSize;
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TUint8* recordOffsets = buffer.iRecordOffsets;
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TUint32 orig_tail = user_buffer.iTail;
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TUint32 newHead, head, tail;
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if(!(user_buffer.iMode&RBTrace::EEnable))
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goto trace_off;
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retry:
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head = orig_head;
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tail = orig_tail &~ 1;
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newHead = head+size;
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if(newHead>end)
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{
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requestDataSize = 0;
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newHead = start+size;
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if(head<tail || tail<newHead+1)
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{
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if(!(user_buffer.iMode&RBTrace::EFreeRunning))
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goto trace_dropped;
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user_buffer.iWrap = head;
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head = start;
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tail = newHead+(recordOffsets[newHead>>2]<<2);
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goto overwrite;
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}
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user_buffer.iWrap = head;
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head = start;
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}
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else if(head<tail && tail<=newHead)
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{
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{
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requestDataSize = 0;
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TUint wrap = user_buffer.iWrap;
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if(!(user_buffer.iMode&RBTrace::EFreeRunning))
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goto trace_dropped;
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if(newHead<end && newHead<wrap)
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{
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tail = newHead+(recordOffsets[newHead>>2]<<2);
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if(tail>=end || tail>=wrap)
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tail = start;
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}
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else
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tail = start;
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}
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overwrite:
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*(TUint32*)(address+tail) |= BTrace::EMissingRecord<<(BTrace::EFlagsIndex*8);
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if (!__e32_atomic_cas_ord32(&user_buffer.iTail, &orig_tail, tail|1))
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goto retry; // go round again if user side has already updated the tail pointer
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}
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buffer.iRequestDataSize = requestDataSize-size;
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{
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recordOffsets += head>>2;
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TUint32* src;
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TUint32* dst = (TUint32*)((TUint)address+head);
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size >>= 2; // we are now counting words, not bytes
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// store first word of trace...
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TUint w = aHeader;
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if(buffer.iDropped)
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{
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buffer.iDropped = 0;
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w |= BTrace::EMissingRecord<<(BTrace::EFlagsIndex*8);
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}
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*recordOffsets++ = (TUint8)size;
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--size;
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*dst++ = w;
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#ifndef __SMP__
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if(aHeader&(BTrace::EHeader2Present<<(BTrace::EFlagsIndex*8)))
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#endif
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{
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w = aHeader2;
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*recordOffsets++ = (TUint8)size;
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--size;
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*dst++ = w;
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}
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#ifdef BTRACE_INCLUDE_TIMESTAMPS
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// store timestamp...
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#if defined(__SMP__) || (defined(__EPOC32__) && defined(__CPU_X86))
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*recordOffsets++ = (TUint8)size;
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--size;
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*dst++ = TUint32(timeStamp);
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*recordOffsets++ = (TUint8)size;
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--size;
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*dst++ = TUint32(timeStamp>>32);
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#else
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*recordOffsets++ = (TUint8)size;
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--size;
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*dst++ = timeStamp;
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if (aIncTimestamp2)
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{
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*recordOffsets++ = (TUint8)size;
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--size;
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*dst++ = timeStamp2;
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}
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#endif
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#endif
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|
|
412 |
if(aHeader&(BTrace::EContextIdPresent<<(BTrace::EFlagsIndex*8)))
|
|
413 |
{
|
|
414 |
w = aContext;
|
|
415 |
*recordOffsets++ = (TUint8)size;
|
|
416 |
--size;
|
|
417 |
*dst++ = w;
|
|
418 |
}
|
|
419 |
|
|
420 |
if(aHeader&(BTrace::EPcPresent<<(BTrace::EFlagsIndex*8)))
|
|
421 |
{
|
|
422 |
w = aPc;
|
|
423 |
*recordOffsets++ = (TUint8)size;
|
|
424 |
--size;
|
|
425 |
*dst++ = w;
|
|
426 |
}
|
|
427 |
|
|
428 |
if(aHeader&(BTrace::EExtraPresent<<(BTrace::EFlagsIndex*8)))
|
|
429 |
{
|
|
430 |
w = aExtra;
|
|
431 |
*recordOffsets++ = (TUint8)size;
|
|
432 |
--size;
|
|
433 |
*dst++ = w;
|
|
434 |
}
|
|
435 |
|
|
436 |
// store remainding words of trace...
|
|
437 |
if(size)
|
|
438 |
{
|
|
439 |
w = a1;
|
|
440 |
*recordOffsets++ = (TUint8)size;
|
|
441 |
--size;
|
|
442 |
*dst++ = w;
|
|
443 |
if(size)
|
|
444 |
{
|
|
445 |
w = a2;
|
|
446 |
*recordOffsets++ = (TUint8)size;
|
|
447 |
--size;
|
|
448 |
*dst++ = w;
|
|
449 |
if(size)
|
|
450 |
{
|
|
451 |
if(size==1)
|
|
452 |
{
|
|
453 |
w = a3;
|
|
454 |
*recordOffsets++ = (TUint8)size;
|
|
455 |
*dst++ = w;
|
|
456 |
}
|
|
457 |
else
|
|
458 |
{
|
|
459 |
src = (TUint32*)a3;
|
|
460 |
do
|
|
461 |
{
|
|
462 |
w = *src++;
|
|
463 |
*recordOffsets++ = (TUint8)size;
|
|
464 |
--size;
|
|
465 |
*dst++ = w;
|
|
466 |
}
|
|
467 |
while(size);
|
|
468 |
}
|
|
469 |
}
|
|
470 |
}
|
|
471 |
}
|
|
472 |
}
|
|
473 |
buffer.iHead = newHead;
|
|
474 |
#ifdef __SMP__
|
|
475 |
__e32_memory_barrier(); // make sure written data is observed before head pointer update
|
|
476 |
#endif
|
|
477 |
user_buffer.iHead = newHead;
|
|
478 |
|
|
479 |
{
|
|
480 |
TDfc* dfc = (TDfc*)buffer.iWaitingDfc;
|
|
481 |
if(dfc && buffer.iRequestDataSize<=0)
|
|
482 |
{
|
|
483 |
buffer.iWaitingDfc = NULL;
|
|
484 |
dfc->RawAdd();
|
|
485 |
}
|
|
486 |
}
|
|
487 |
|
|
488 |
#ifdef __SMP__
|
|
489 |
__e32_memory_barrier();
|
|
490 |
#endif
|
|
491 |
++user_buffer.iGeneration; // atomic not required since only driver modifies iGeneration
|
|
492 |
#ifndef __SMP__
|
|
493 |
NKern::RestoreInterrupts(irq);
|
|
494 |
#endif
|
|
495 |
return ETrue;
|
|
496 |
|
|
497 |
|
|
498 |
trace_dropped:
|
|
499 |
buffer.iRequestDataSize = 0;
|
|
500 |
buffer.iDropped = ETrue;
|
|
501 |
#ifdef __SMP__
|
|
502 |
__e32_memory_barrier();
|
|
503 |
#endif
|
|
504 |
++user_buffer.iGeneration; // atomic not required since only driver modifies iGeneration
|
|
505 |
#ifndef __SMP__
|
|
506 |
NKern::RestoreInterrupts(irq);
|
|
507 |
#endif
|
|
508 |
return ETrue;
|
|
509 |
|
|
510 |
trace_off:
|
|
511 |
#ifdef __SMP__
|
|
512 |
__e32_memory_barrier();
|
|
513 |
#endif
|
|
514 |
++user_buffer.iGeneration; // atomic not required since only driver modifies iGeneration
|
|
515 |
#ifndef __SMP__
|
|
516 |
NKern::RestoreInterrupts(irq);
|
|
517 |
#endif
|
|
518 |
return EFalse;
|
|
519 |
}
|
|
520 |
|
|
521 |
TBool TBTraceBufferK::TraceWithTimestamp2(TUint32 aHeader,TUint32 aHeader2,const TUint32 aContext,const TUint32 a1,const TUint32 a2,const TUint32 a3,const TUint32 aExtra,const TUint32 aPc)
|
|
522 |
{
|
|
523 |
return Trace_Impl(aHeader, aHeader2, aContext, a1, a2, a3, aExtra, aPc, ETrue);
|
|
524 |
}
|
|
525 |
|
|
526 |
TBool TBTraceBufferK::Trace(TUint32 aHeader,TUint32 aHeader2,const TUint32 aContext,const TUint32 a1,const TUint32 a2,const TUint32 a3,const TUint32 aExtra,const TUint32 aPc)
|
|
527 |
{
|
|
528 |
return Trace_Impl(aHeader, aHeader2, aContext, a1, a2, a3, aExtra, aPc, EFalse);
|
|
529 |
}
|
|
530 |
|
|
531 |
#endif // BTRACE_DRIVER_MACHINE_CODED
|
|
532 |
|
|
533 |
|
|
534 |
TInt TBTraceBufferK::ControlFunction(BTrace::TControl aFunction, TAny* aArg1, TAny* aArg2)
|
|
535 |
{
|
|
536 |
switch(aFunction)
|
|
537 |
{
|
|
538 |
case BTrace::ECtrlSystemCrashed:
|
|
539 |
if(Buffer.iAddress)
|
|
540 |
((TBTraceBuffer*)Buffer.iAddress)->iMode = 0; // turn off trace
|
|
541 |
return KErrNone;
|
|
542 |
|
|
543 |
case BTrace::ECtrlCrashReadFirst:
|
|
544 |
Buffer.iCrashReadPart = 0;
|
|
545 |
// fall through...
|
|
546 |
case BTrace::ECtrlCrashReadNext:
|
|
547 |
Buffer.CrashRead(*(TUint8**)aArg1,*(TUint*)aArg2);
|
|
548 |
++Buffer.iCrashReadPart;
|
|
549 |
return KErrNone;
|
|
550 |
|
|
551 |
default:
|
|
552 |
return KErrNotSupported;
|
|
553 |
}
|
|
554 |
}
|
|
555 |
|
|
556 |
|
|
557 |
void TBTraceBufferK::CrashRead(TUint8*& aData, TUint& aSize)
|
|
558 |
{
|
|
559 |
// start by assuming no data...
|
|
560 |
aData = 0;
|
|
561 |
aSize = 0;
|
|
562 |
|
|
563 |
TBTraceBuffer* userBuffer = (TBTraceBuffer*)iAddress;
|
|
564 |
if(!userBuffer)
|
|
565 |
return; // no trace buffer, so end...
|
|
566 |
|
|
567 |
TUint head = iHead;
|
|
568 |
TUint tail = userBuffer->iTail;
|
|
569 |
TUint8* data = (TUint8*)userBuffer;
|
|
570 |
|
|
571 |
if(head>tail)
|
|
572 |
{
|
|
573 |
// data is in one part...
|
|
574 |
if(iCrashReadPart==0)
|
|
575 |
{
|
|
576 |
aData = data+tail;
|
|
577 |
aSize = head-tail;
|
|
578 |
}
|
|
579 |
// else no more parts
|
|
580 |
}
|
|
581 |
else if(head<tail)
|
|
582 |
{
|
|
583 |
// data is in two parts...
|
|
584 |
if(iCrashReadPart==0)
|
|
585 |
{
|
|
586 |
// first part...
|
|
587 |
aData = data+tail;
|
|
588 |
aSize = userBuffer->iWrap-tail;
|
|
589 |
}
|
|
590 |
else if(iCrashReadPart==1)
|
|
591 |
{
|
|
592 |
// second part...
|
|
593 |
aData = data+iStart;
|
|
594 |
aSize = head-iStart;
|
|
595 |
}
|
|
596 |
// else no more parts
|
|
597 |
}
|
|
598 |
}
|
|
599 |
|
|
600 |
|
|
601 |
//
|
|
602 |
// LDD
|
|
603 |
//
|
|
604 |
|
|
605 |
class DBTraceFactory : public DLogicalDevice
|
|
606 |
{
|
|
607 |
public:
|
|
608 |
virtual TInt Install();
|
|
609 |
virtual void GetCaps(TDes8& aDes) const;
|
|
610 |
virtual TInt Create(DLogicalChannelBase*& aChannel);
|
|
611 |
};
|
|
612 |
|
|
613 |
|
|
614 |
class DBTraceChannel : public DLogicalChannelBase
|
|
615 |
{
|
|
616 |
public:
|
|
617 |
DBTraceChannel();
|
|
618 |
virtual ~DBTraceChannel();
|
|
619 |
// Inherited from DObject
|
|
620 |
virtual TInt RequestUserHandle(DThread* aThread, TOwnerType aType);
|
|
621 |
// Inherited from DLogicalChannelBase
|
|
622 |
virtual TInt DoCreate(TInt aUnit, const TDesC8* anInfo, const TVersion& aVer);
|
|
623 |
virtual TInt Request(TInt aReqNo, TAny* a1, TAny* a2);
|
|
624 |
//
|
|
625 |
static void WaitCallback(TAny* aSelf);
|
|
626 |
private:
|
|
627 |
DThread* iClient;
|
|
628 |
TClientRequest* iWaitRequest;
|
|
629 |
TDfc iWaitDfc;
|
|
630 |
TBool iOpened;
|
|
631 |
TInt iFilter2Count;
|
|
632 |
TUint32* iFilter2;
|
|
633 |
TUint32* iFilter2Set;
|
|
634 |
TBool iTimestamp2Enabled;
|
|
635 |
};
|
|
636 |
|
|
637 |
|
|
638 |
//
|
|
639 |
// DBTraceFactory
|
|
640 |
//
|
|
641 |
|
|
642 |
TInt DBTraceFactory::Install()
|
|
643 |
{
|
|
644 |
return SetName(&RBTrace::Name());
|
|
645 |
}
|
|
646 |
|
|
647 |
void DBTraceFactory::GetCaps(TDes8& aDes) const
|
|
648 |
{
|
|
649 |
Kern::InfoCopy(aDes,0,0);
|
|
650 |
}
|
|
651 |
|
|
652 |
TInt DBTraceFactory::Create(DLogicalChannelBase*& aChannel)
|
|
653 |
{
|
|
654 |
aChannel=new DBTraceChannel();
|
|
655 |
if(!aChannel)
|
|
656 |
return KErrNoMemory;
|
|
657 |
return KErrNone;
|
|
658 |
}
|
|
659 |
|
|
660 |
void syncDfcFn(TAny* aPtr)
|
|
661 |
{
|
|
662 |
NKern::FSSignal((NFastSemaphore*)aPtr);
|
|
663 |
}
|
|
664 |
|
|
665 |
void Sync(TDfcQue* aDfcQ)
|
|
666 |
{
|
|
667 |
NFastSemaphore s(0);
|
|
668 |
TDfc dfc(&syncDfcFn, &s, aDfcQ, 0);
|
|
669 |
dfc.Enque();
|
|
670 |
NKern::FSWait(&s);
|
|
671 |
}
|
|
672 |
|
|
673 |
//
|
|
674 |
// DBTraceChannel
|
|
675 |
//
|
|
676 |
|
|
677 |
DBTraceChannel::DBTraceChannel()
|
|
678 |
: iWaitDfc(WaitCallback,this,Kern::DfcQue1(),7)
|
|
679 |
{
|
|
680 |
}
|
|
681 |
|
|
682 |
DBTraceChannel::~DBTraceChannel()
|
|
683 |
{
|
|
684 |
delete iFilter2Set;
|
|
685 |
Buffer.iWaitingDfc = NULL;
|
|
686 |
iWaitDfc.Cancel();
|
|
687 |
Sync(Kern::DfcQue1());
|
|
688 |
if (iWaitRequest)
|
|
689 |
{
|
|
690 |
Kern::QueueRequestComplete(iClient, iWaitRequest, KErrCancel); // does nothing if request not pending
|
|
691 |
Kern::DestroyClientRequest(iWaitRequest);
|
|
692 |
}
|
|
693 |
if (iOpened)
|
|
694 |
__e32_atomic_swp_ord32(&ChannelOpen, 0);
|
|
695 |
}
|
|
696 |
|
|
697 |
TInt DBTraceChannel::DoCreate(TInt /*aUnit*/, const TDesC8* /*aInfo*/, const TVersion& /*aVer*/)
|
|
698 |
{
|
|
699 |
// _LIT_SECURITY_POLICY_C2(KSecurityPolicy,ECapabilityReadDeviceData,ECapabilityWriteDeviceData);
|
|
700 |
// if(!KSecurityPolicy().CheckPolicy(&Kern::CurrentThread(),__PLATSEC_DIAGNOSTIC_STRING("Checked by BTRACE")))
|
|
701 |
// return KErrPermissionDenied;
|
|
702 |
iClient = &Kern::CurrentThread();
|
|
703 |
TInt r = Kern::CreateClientRequest(iWaitRequest);
|
|
704 |
if (r!=KErrNone)
|
|
705 |
return r;
|
|
706 |
if (__e32_atomic_swp_ord32(&ChannelOpen, 1))
|
|
707 |
return KErrInUse;
|
|
708 |
iOpened = ETrue;
|
|
709 |
return KErrNone;
|
|
710 |
}
|
|
711 |
|
|
712 |
|
|
713 |
TInt DBTraceChannel::RequestUserHandle(DThread* aThread, TOwnerType aType)
|
|
714 |
{
|
|
715 |
if (aType!=EOwnerThread || aThread!=iClient)
|
|
716 |
return KErrAccessDenied;
|
|
717 |
return KErrNone;
|
|
718 |
}
|
|
719 |
|
|
720 |
void DBTraceChannel::WaitCallback(TAny* aSelf)
|
|
721 |
{
|
|
722 |
DBTraceChannel& c = *(DBTraceChannel*)aSelf;
|
|
723 |
Kern::QueueRequestComplete(c.iClient, c.iWaitRequest, KErrNone);
|
|
724 |
}
|
|
725 |
|
|
726 |
TInt DBTraceChannel::Request(TInt aReqNo, TAny* a1, TAny* a2)
|
|
727 |
{
|
|
728 |
TInt r;
|
|
729 |
TBTraceBufferK& buffer = Buffer;
|
|
730 |
|
|
731 |
switch(aReqNo)
|
|
732 |
{
|
|
733 |
case RBTrace::EOpenBuffer:
|
|
734 |
NKern::ThreadEnterCS();
|
|
735 |
if(!Buffer.iBufferChunk)
|
|
736 |
r = buffer.Create(0x100000);
|
|
737 |
else
|
|
738 |
r = KErrNone;
|
|
739 |
if(r==KErrNone)
|
|
740 |
r = Kern::MakeHandleAndOpen(NULL, buffer.iBufferChunk);
|
|
741 |
NKern::ThreadLeaveCS();
|
|
742 |
return r;
|
|
743 |
|
|
744 |
case RBTrace::EResizeBuffer:
|
|
745 |
NKern::ThreadEnterCS();
|
|
746 |
buffer.Close();
|
|
747 |
r = buffer.Create((TInt)a1);
|
|
748 |
NKern::ThreadLeaveCS();
|
|
749 |
return r;
|
|
750 |
|
|
751 |
case RBTrace::ESetFilter:
|
|
752 |
{
|
|
753 |
TInt old = BTrace::SetFilter((BTrace::TCategory)(TInt)a1,(TInt)a2);
|
|
754 |
if((TInt)a2==1 && old==0) // filter turned on?
|
|
755 |
{
|
|
756 |
if ((TInt)a1==BTrace::EMetaTrace)
|
|
757 |
BTracePrimeMetatrace();
|
|
758 |
BTrace::Prime((TInt)a1); // prime this trace category
|
|
759 |
}
|
|
760 |
return old;
|
|
761 |
}
|
|
762 |
|
|
763 |
case RBTrace::ESetFilter2:
|
|
764 |
return BTrace::SetFilter2((TUint32)a1,(TBool)a2);
|
|
765 |
|
|
766 |
case RBTrace::ESetFilter2Array:
|
|
767 |
{
|
|
768 |
NKern::ThreadEnterCS();
|
|
769 |
delete iFilter2Set;
|
|
770 |
TInt size = (TInt)a2*sizeof(TUint32);
|
|
771 |
TUint32* buffer = (TUint32*)Kern::Alloc(size);
|
|
772 |
iFilter2Set = buffer;
|
|
773 |
NKern::ThreadLeaveCS();
|
|
774 |
if(!buffer)
|
|
775 |
return KErrNoMemory;
|
|
776 |
kumemget32(buffer,a1,size);
|
|
777 |
r = BTrace::SetFilter2(buffer,(TInt)a2);
|
|
778 |
NKern::ThreadEnterCS();
|
|
779 |
delete iFilter2Set;
|
|
780 |
iFilter2Set = 0;
|
|
781 |
NKern::ThreadLeaveCS();
|
|
782 |
return r;
|
|
783 |
}
|
|
784 |
|
|
785 |
case RBTrace::ESetFilter2Global:
|
|
786 |
BTrace::SetFilter2((TBool)a1);
|
|
787 |
return KErrNone;
|
|
788 |
|
|
789 |
case RBTrace::EGetFilter2Part1:
|
|
790 |
{
|
|
791 |
NKern::ThreadEnterCS();
|
|
792 |
delete iFilter2;
|
|
793 |
iFilter2 = 0;
|
|
794 |
iFilter2Count = 0;
|
|
795 |
TInt globalFilter = 0;
|
|
796 |
iFilter2Count = BTrace::Filter2(iFilter2,globalFilter);
|
|
797 |
NKern::ThreadLeaveCS();
|
|
798 |
kumemput32(a2,&globalFilter,sizeof(TBool));
|
|
799 |
return iFilter2Count;
|
|
800 |
}
|
|
801 |
|
|
802 |
case RBTrace::EGetFilter2Part2:
|
|
803 |
if((TInt)a2!=iFilter2Count)
|
|
804 |
return KErrArgument;
|
|
805 |
if(iFilter2Count>0)
|
|
806 |
kumemput32(a1,iFilter2,iFilter2Count*sizeof(TUint32));
|
|
807 |
NKern::ThreadEnterCS();
|
|
808 |
delete iFilter2;
|
|
809 |
iFilter2 = 0;
|
|
810 |
iFilter2Count = 0;
|
|
811 |
NKern::ThreadLeaveCS();
|
|
812 |
return KErrNone;
|
|
813 |
|
|
814 |
case RBTrace::ERequestData:
|
|
815 |
if (iWaitRequest->SetStatus((TRequestStatus*)a1) != KErrNone)
|
|
816 |
Kern::PanicCurrentThread(RBTrace::Name(),RBTrace::ERequestAlreadyPending);
|
|
817 |
r = buffer.RequestData((TInt)a2,&iWaitDfc);
|
|
818 |
if (r!=KErrNone)
|
|
819 |
{
|
|
820 |
iWaitRequest->Reset();
|
|
821 |
TRequestStatus* s = (TRequestStatus*)a1;
|
|
822 |
if (r==KErrCompletion)
|
|
823 |
r = KErrNone;
|
|
824 |
Kern::RequestComplete(s, r);
|
|
825 |
}
|
|
826 |
return r;
|
|
827 |
|
|
828 |
case RBTrace::ECancelRequestData:
|
|
829 |
buffer.iWaitingDfc = NULL;
|
|
830 |
iWaitDfc.Cancel();
|
|
831 |
Kern::QueueRequestComplete(iClient, iWaitRequest, KErrCancel);
|
|
832 |
return KErrNone;
|
|
833 |
|
|
834 |
case RBTrace::ESetSerialPortOutput:
|
|
835 |
{
|
|
836 |
TUint mode = Kern::ESerialOutNever+(TUint)a1;
|
|
837 |
mode = Kern::SetTextTraceMode(mode,Kern::ESerialOutMask);
|
|
838 |
mode &= Kern::ESerialOutMask;
|
|
839 |
return mode-Kern::ESerialOutNever;
|
|
840 |
}
|
|
841 |
|
|
842 |
case RBTrace::ESetTimestamp2Enabled:
|
|
843 |
{
|
|
844 |
TBool old = iTimestamp2Enabled;
|
|
845 |
iTimestamp2Enabled = (TBool)a1;
|
|
846 |
BTrace::TControlFunction oldControl;
|
|
847 |
BTrace::THandler oldHandler;
|
|
848 |
BTrace::THandler handler = iTimestamp2Enabled ? TBTraceBufferK::TraceWithTimestamp2 : TBTraceBufferK::Trace;
|
|
849 |
BTrace::SetHandlers(handler,TBTraceBufferK::ControlFunction,oldHandler,oldControl);
|
|
850 |
return old;
|
|
851 |
}
|
|
852 |
|
|
853 |
default:
|
|
854 |
break;
|
|
855 |
}
|
|
856 |
return KErrNotSupported;
|
|
857 |
}
|
|
858 |
|
|
859 |
|
|
860 |
DECLARE_EXTENSION_LDD()
|
|
861 |
{
|
|
862 |
return new DBTraceFactory;
|
|
863 |
}
|
|
864 |
|
|
865 |
#ifdef __WINS__
|
|
866 |
DECLARE_STANDARD_EXTENSION()
|
|
867 |
#else
|
|
868 |
DECLARE_EXTENSION_WITH_PRIORITY(KExtensionMaximumPriority)
|
|
869 |
#endif
|
|
870 |
{
|
|
871 |
TSuperPage& superPage = Kern::SuperPage();
|
|
872 |
TInt bufferSize = superPage.iInitialBTraceBuffer;
|
|
873 |
if(!bufferSize)
|
|
874 |
bufferSize = 0x10000;
|
|
875 |
TInt r=Buffer.Create(bufferSize);
|
|
876 |
if(r==KErrNone)
|
|
877 |
Buffer.Reset(superPage.iInitialBTraceMode);
|
|
878 |
return r;
|
|
879 |
}
|
|
880 |
|