author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 31 Aug 2010 16:45:49 +0300 | |
branch | RCL_3 |
changeset 20 | ca8a1b6995f6 |
permissions | -rw-r--r-- |
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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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// Refactored class containing breakpoint related code from rm_debug_kerneldriver.cpp |
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// |
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/** |
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@file |
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@internalComponent |
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@released |
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*/ |
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#ifndef D_RMD_BREAKPOINTS_H |
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#define D_RMD_BREAKPOINTS_H |
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#include <rm_debug_api.h> |
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#include <kernel/kern_priv.h> |
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#include "rm_debug_kerneldriver.h" |
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// fwd declaration of friend classes needed due to re-factoring |
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class DRM_DebugChannel; |
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class DRMDStepper; |
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// |
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// Macros |
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// |
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const TUint32 KArmBreakPoint = 0xE7F123F4; |
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const TUint16 KThumbBreakPoint = 0xDE56; |
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const TUint16 KT2EEBreakPoint = 0xC100; // From ARM ARM DDI0406A, section A9.2.1 Undefined instruction encoding for Thumb2-EE. |
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#define NUMBER_OF_TEMP_BREAKPOINTS 10 |
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#define NUMBER_OF_MAX_BREAKPOINTS 100 |
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// |
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// class TBreakEntry |
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// |
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class TBreakEntry |
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{ |
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public: |
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inline TBreakEntry() { Reset(); }; |
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inline TBreakEntry(Debug::TBreakId aBreakId, TUint64 aId, TBool aThreadSpecific, TUint32 aAddress, Debug::TArchitectureMode aMode) |
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: iBreakId(aBreakId), |
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iId(aId), |
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iAddress(aAddress), |
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iMode(aMode), |
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iThreadSpecific(aThreadSpecific) |
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{ |
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iInstruction.FillZ(4); |
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iPageAddress = 0; |
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iDisabledForStep = EFalse; |
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iObsoleteLibraryBreakpoint = EFalse; |
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iResumeOnceOutOfRange = EFalse; |
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iSteppingInto = EFalse; |
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iRangeStart = 0; |
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iRangeEnd = 0; |
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iStepTarget = EFalse; |
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iNumSteps = 0; |
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}; |
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inline void Reset() |
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{ |
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iId = 0; |
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iAddress = 0; |
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iMode = Debug::EArmMode; |
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iInstruction.FillZ(4); |
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iPageAddress = 0; |
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iDisabledForStep = EFalse; |
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iObsoleteLibraryBreakpoint = EFalse; |
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iResumeOnceOutOfRange = EFalse; |
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iSteppingInto = EFalse; |
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iRangeStart = 0; |
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iRangeEnd = 0; |
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iStepTarget = EFalse; |
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iNumSteps = 0; |
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}; |
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public: |
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// Unique Id for this breakpoint. Assigned by D_RMD_Breakpoints::DoSetBreak(). @see D_RMD_Breakpoints::DoSetBreak |
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TInt32 iBreakId; |
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// Consider making the iId into a union of TProcessId, TThreadId, global etc. to make things more obvious |
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// Object Id in which this breakpoint should operate. |
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TUint64 iId; |
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// Address at which this breakpoint should operate |
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TUint32 iAddress; |
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// CPU ISA which this breakpoint uses, e.g. EArmMode/EThumbMode. |
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Debug::TArchitectureMode iMode; |
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// The original instruction which was stored at iAddress. |
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TBuf8<4> iInstruction; |
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TUint32 iPageAddress; //not used: BC if we remove it |
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|
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// Indicates whether this breakpoint has been temporarily replaced with original instruction to enable step-off this breakpoint |
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TBool iDisabledForStep; |
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/* This is used when libraries and processes are removed, so that |
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* the driver can say 'ok' when requested to remove breakpoints |
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* that existed in these cases, rather than 'Not Found'. |
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* |
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* Its not logical, but its a BC break if we change it :-( |
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*/ |
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TBool iObsoleteLibraryBreakpoint; |
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// Indicates whether this thread should be resumed after stepping off this breakpoint |
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TBool iResumeOnceOutOfRange; |
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TBool iSteppingInto; |
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TUint32 iRangeStart; |
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TUint32 iRangeEnd; |
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TBool iThreadSpecific; |
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TBool iStepTarget; |
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|
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// Indicates how many more instruction steps should occur after hitting this breakpoint |
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TInt iNumSteps; |
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}; |
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/** |
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@internalTechnology |
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|
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This class encapsulates all the data concerning run-mode and stop mode breakpoints |
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as understood by the run-mode and stop-mode debug system. |
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|
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Note: |
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The internal list of breakpoints is currently divided into two sections. The range from |
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0...NUMBER_OF_TEMP_BREAKPOINTS is used internally by the debug driver for implementing |
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stepping. The range from NUMBER_OF_TEMP_BREAKPOINTS to NUMBER_OF_MAX_BREAKPOINTS is used |
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to store information about breakpoints set by the client debug agents. |
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|
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In future, this should change, so that each breakpoint knows what kind of breakpoint it |
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is (user/temp etc). |
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|
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|
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*/ |
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class D_RMD_Breakpoints : public DBase |
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{ |
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public: |
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D_RMD_Breakpoints(DRM_DebugChannel* aChannel); |
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~D_RMD_Breakpoints(); |
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|
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TInt Init(); |
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|
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// from rm_debug_driver.h |
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TInt DoSetBreak(TInt32 &aBreakId, const TUint64 aId, const TBool aThreadSpecific, const TUint32 aAddress, const Debug::TArchitectureMode aMode ); |
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TInt DoEnableBreak(TBreakEntry &aEntry, TBool aSaveOldInstruction); |
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TInt DoClearBreak(const TInt32 aBreakId, TBool aIgnoreTerminatedThreads=EFalse); |
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TInt DoModifyBreak(TModifyBreakInfo* aBreakInfo); |
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TInt DoModifyProcessBreak(TModifyProcessBreakInfo* aBreakInfo); |
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TInt DoBreakInfo(TGetBreakInfo* aBreakInfo); |
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void ClearAllBreakPoints(); |
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TInt DisableBreakAtAddress(TUint32 aAddress); |
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TInt DoEnableDisabledBreak(TUint64 aThreadId); |
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|
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void DoRemoveThreadBreaks(TUint64 aThreadId); |
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void RemoveBreaksForProcess(TUint64 aProcessId, TUint32 aCodeAddress, TUint32 aCodeSize); |
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void InvalidateLibraryBreakPoints(TUint32 aCodeAddress, TUint32 aCodeSize); |
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TInt BreakPointCount() const; |
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TBreakEntry* GetNextBreak(const TBreakEntry* aBreakEntry) const; |
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TBool IsTemporaryBreak(const TBreakEntry& aBreakEntry) const; |
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169 |
|
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TInt DoGetBreakList(TUint32* aBuffer, const TUint32 aBufSize, const TUint32 aElement, TUint32& aLastElement); |
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171 |
|
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// Useful helper functions for debugging breakpoint issues |
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inline void print_BreakpointsDisabledForStep(); |
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inline void print_BreakpointsList(); |
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|
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private: |
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// Locked versions of public functions |
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TInt priv_DoSetBreak(TInt32 &aBreakId, const TUint64 aId, const TBool aThreadSpecific, const TUint32 aAddress, const Debug::TArchitectureMode aMode ); |
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TInt priv_DoEnableBreak(TBreakEntry &aEntry, TBool aSaveOldInstruction); |
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TInt priv_DoClearBreak(const TInt32 aBreakId, TBool aIgnoreTerminatedThreads); |
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TInt priv_DoModifyBreak(TModifyBreakInfo* aBreakInfo); |
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TInt priv_DoModifyProcessBreak(TModifyProcessBreakInfo* aBreakInfo); |
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TInt priv_DoBreakInfo(TGetBreakInfo* aBreakInfo); |
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TInt priv_DisableBreakAtAddress(TUint32 aAddress); |
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TInt priv_DoEnableDisabledBreak(TUint64 aThreadId); |
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void priv_DoRemoveThreadBreaks(TUint64 aThreadId); |
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void priv_ClearAllBreakPoints(); |
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TBool priv_IsTemporaryBreak(const TBreakEntry& aBreakEntry) const; |
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|
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// helper functions |
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TBool Aligned(TUint32 aAddress, Debug::TArchitectureMode aMode); |
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TInt BreakSize(Debug::TArchitectureMode aMode); |
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TBool BreakpointsOverlap(TBreakEntry& aFirst, TBreakEntry& aSecond); |
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TUint32 BreakInst(Debug::TArchitectureMode aMode); |
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|
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private: |
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RArray<TBreakEntry> iBreakPointList; |
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TInt iNextBreakId; |
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|
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DRM_DebugChannel* iChannel; // temporary reference back to DRM_DebugChannel to help with refactoring |
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/* Protect access to the breakpoint list with a DSemaphore |
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* |
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* This means that stop-mode debuggers know when the list is being updated by the run-mode debug subsystem. |
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*/ |
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DSemaphore* iLock; |
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TBool iInitialised; |
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}; |
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#include "d_rmd_breakpoints_debug.inl" |
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#endif |