LaneDivide Class Reference

Inheritance diagram for LaneDivide:

Collaboration diagram for LaneDivide:

Public Member Functions
	LaneDivide (Funcdata *f, Varnode *root, const LaneDescription &desc, bool allowDowncast)
	Constructor. More...
bool	doTrace (void)
	Trace lanes as far as possible from the root Varnode. More...
Public Member Functions inherited from TransformManager
	TransformManager (Funcdata *f)
	Constructor.
virtual	~TransformManager (void)
	Destructor.
virtual bool	preserveAddress (Varnode *vn, int4 bitSize, int4 lsbOffset) const
	Should the address of the given Varnode be preserved when constructing a piece. More...
Funcdata *	getFunction (void) const
	Get function being transformed.
void	clearVarnodeMarks (void)
	Clear mark for all Varnodes in the map.
TransformVar *	newPreexistingVarnode (Varnode *vn)
	Make placeholder for preexisting Varnode. More...
TransformVar *	newUnique (int4 size)
	Make placeholder for new unique space Varnode. More...
TransformVar *	newConstant (int4 size, int4 lsbOffset, uintb val)
	Make placeholder for constant Varnode. More...
TransformVar *	newIop (Varnode *vn)
	Make placeholder for special iop constant. More...
TransformVar *	newPiece (Varnode *vn, int4 bitSize, int4 lsbOffset)
	Make placeholder for piece of a Varnode. More...
TransformVar *	newSplit (Varnode *vn, const LaneDescription &description)
	Create placeholder nodes splitting a Varnode into its lanes. More...
TransformVar *	newSplit (Varnode *vn, const LaneDescription &description, int4 numLanes, int4 startLane)
	Create placeholder nodes splitting a Varnode into a subset of lanes in the given description. More...
TransformOp *	newOpReplace (int4 numParams, OpCode opc, PcodeOp *replace)
	Create a new placeholder op intended to replace an existing op. More...
TransformOp *	newOp (int4 numParams, OpCode opc, TransformOp *follow)
	Create a new placeholder op that will not replace an existing op. More...
TransformOp *	newPreexistingOp (int4 numParams, OpCode opc, PcodeOp *originalOp)
	Create a new placeholder op for an existing PcodeOp. More...
TransformVar *	getPreexistingVarnode (Varnode *vn)
	Get (or create) placeholder for preexisting Varnode. More...
TransformVar *	getPiece (Varnode *vn, int4 bitSize, int4 lsbOffset)
	Get (or create) placeholder piece. More...
TransformVar *	getSplit (Varnode *vn, const LaneDescription &description)
	Find (or create) placeholder nodes splitting a Varnode into its lanes. More...
TransformVar *	getSplit (Varnode *vn, const LaneDescription &description, int4 numLanes, int4 startLane)
	Find (or create) placeholder nodes splitting a Varnode into a subset of lanes from a description. More...
void	opSetInput (TransformOp *rop, TransformVar *rvn, int4 slot)
	Mark given variable as input to given op. More...
void	opSetOutput (TransformOp *rop, TransformVar *rvn)
	Mark given variable as output of given op. More...
void	apply (void)
	Apply the full transform to the function.

Additional Inherited Members
Static Public Member Functions inherited from TransformManager
static bool	preexistingGuard (int4 slot, TransformVar *rvn)
	Should newPreexistingOp be called. More...

Constructor & Destructor Documentation

LaneDivide()

LaneDivide::LaneDivide	(	Funcdata *	f,
		Varnode *	root,
		const LaneDescription &	desc,
		bool	allowDowncast
	)

Constructor.

Parameters

f	is the function being transformed
root	is the root Varnode to start tracing lanes from
desc	is a description of the lanes on the root Varnode
allowDowncast	is true if we all SUBPIECE to be treated as terminating

Member Function Documentation

doTrace()

bool LaneDivide::doTrace

(

void

)

Trace lanes as far as possible from the root Varnode.

Push the lanes around from the root, setting up the explicit transforms as we go. If at any point, the lanes cannot be naturally pushed, return false.

Returns

true if a full transform has been constructed that can split into explicit lanes

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The documentation for this class was generated from the following files:

• subflow.hh
• subflow.cc