1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of the License "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #ifndef D_RMD_STEPPING_H

    17 #define D_RMD_STEPPING_H

    18 

    19 // fwd declaration of DRM_DebugChannel

    20 class DRM_DebugChannel;

    21 

    22 // extracted from rm_debug_kerneldriver.h

    23 // Register definitions

    24 #define SP_REGISTER			13

    25 #define LINK_REGISTER		14

    26 #define PC_REGISTER			15

    27 #define STATUS_REGISTER		16

    28 

    29 class DRMDStepping : public DBase

    30 {

    31 public:

    32 	// ctor

    33 	DRMDStepping(DRM_DebugChannel* aChannel);

    34 

    35 	// dtor

    36 	~DRMDStepping();

    37 

    38 	// extracted from rm_debug_kerneldriver.cpp

    39 	TBool IsExecuted(TUint8 aCondition, TUint32 aStatusRegister);

    40 	TBool IsPreviousInstructionMovePCToLR(DThread *aThread);

    41 	void DecodeDataProcessingInstruction(TUint8 aOpcode, TUint32 aOp1, TUint32 aOp2, TUint32 aStatusRegister, TUint32 &aBreakAddress);

    42 	TUint32 PCAfterInstructionExecutes(DThread *aThread, TUint32 aCurrentPC, TUint32 aStatusRegister, TInt aInstSize, TUint32 &aNewRangeEnd, TBool &aChangingModes);

    43 	TUint32 ShiftedRegValue(DThread *aThread, TUint32 aInstruction, TUint32 aCurrentPC, TUint32 aStatusRegister);

    44 	TInt ModifyBreaksForStep(DThread *aThread, TUint32 aRangeStart, TUint32 aRangeEnd,TBool aResumeOnceOutOfRange, TBool aCheckForStubs, const TUint32 aNumSteps);

    45 

    46 private:

    47 

    48 	// Needed to access private data until re-structuring work is complete.

    49 	friend class DRM_DebugChannel;

    50 

    51 	DRM_DebugChannel* iChannel;	// temporary reference back to DRM_DebugChannel to help with refactoring

    52 

    53 	// Set of inline functions for decoding instructions. Formerly these were all macros

    54 

    55 	// ARM instruction bitmasks

    56 	inline TUint32 arm_opcode(const TUint32 aInst);

    57 

    58 	// Generic instruction defines

    59 	inline TUint32 arm_rm(const TUint32 aInst);

    60 	inline TUint32 arm_rs(const TUint32 aInst);

    61 	inline TUint32 arm_rd(const TUint32 aInst);

    62 	inline TUint32 arm_rn(const TUint32 aInst);

    63 	inline TUint32 arm_load(const TUint32 aInst);

    64 

    65 	// Data processing instruction defines

    66 	inline TUint32 arm_data_shift(const TUint32 aInst);

    67 	inline TUint32 arm_data_c(const TUint32 aInst);

    68 	inline TUint32 arm_data_imm(const TUint32 aInst);

    69 	inline TUint32 arm_data_rot(const TUint32 aInst);

    70 

    71 	// Single date transfer instruction defines

    72 	inline TUint32 arm_single_imm(const TUint32 aInst);

    73 	inline TUint32 arm_single_byte(const TUint32 aInst);

    74 	inline TUint32 arm_single_u(const TUint32 aInst);

    75 	inline TUint32 arm_single_pre(const TUint32 aInst);

    76 

    77 	// Block data transfer instruction defines

    78 	inline TUint32 arm_block_reglist(const TUint32 aInst);

    79 	inline TUint32 arm_block_u(const TUint32 aInst);

    80 	inline TUint32 arm_block_pre(const TUint32 aInst);

    81 

    82 	// Branch instruction defines

    83 	inline TUint32 arm_b_addr(const TUint32 aInst);

    84 	inline TUint32 arm_instr_b_dest(const TUint32 aInst, TUint32& aAddr);

    85 	inline TUint32 thumb_b_addr(const TUint32 aInst);

    86 	inline TUint32 thumb_instr_b_dest(const TUint32 aInst, TUint32& aAddr);

    87 	inline TUint32 arm_carry_bit(void);

    88 	

    89 

    90 	// Thumb instruction bitmasks

    91 	inline TUint16 thumb_opcode(const TUint16 aInst);

    92 	inline TUint16 thumb_inst_7_15(const TUint16 aInst);

    93 	inline TUint16 thumb_inst_8_15(const TUint16 aInst);

    94 

    95 	// Thumb2 decode support functions

    96 	inline TUint16 t2opcode16(const TUint16 aInst);

    97 

    98 	inline TUint16 t2opcode16special(const TUint16 aInst);

    99 

   100 	// Helper functions

   101 	TInt CurrentPC(DThread* aThread, TUint32& aPC);

   102 

   103 	TInt CurrentCPSR(DThread* aThread, TUint32& aCPSR);	

   104 

   105 	TInt CurrentInstruction(DThread* aThread, TUint32& aInstruction);

   106 

   107 	TInt CurrentArchMode(const TUint32 cpsr, Debug::TArchitectureMode& mode);

   108 

   109 	TInt RegisterValue(DThread *aThread, const TUint32 aKernelRegisterId, TUint32 &aValue);

   110 

   111 	TInt ReadMem32(DThread* aThread, const TUint32 aAddress, TUint32& aValue);

   112 

   113 	TInt ReadMem16(DThread* aThread, const TUint32 aAddress, TUint16& aValue);

   114 

   115 	TInt ReadMem8(DThread* aThread, const TUint32 aAddress, TUint8& aValue);

   116 

   117 	inline TUint32 BitCount(const TUint32 aVal);

   118 

   119 	inline TUint32 IsBitSet(const TUint32 aBitset, const TUint8 aBitNum);

   120 };

   121 

   122 #include "d_rmd_stepping.inl"

   123 

   124 #endif	// D_RMD_STEPPPING_H

   125 

   126 // End of file - d-rmd-stepping.h