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bit based pieces, preserveAddress virtual method

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This commit is contained in:
caheckman 2019-10-05 15:49:30 -04:00
parent ace956c215
commit 0af94c23c1
2 changed files with 66 additions and 27 deletions
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17
Ghidra/Features/Decompiler/src/decompile/cpp/transform.hh
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@ -33,12 +33,13 @@ public:
constant_iop = 5, ///< Special iop constant encoding a PcodeOp reference
};
private:
Varnode *vn; ///< Original \b big Varnode of which \b this is a component
Varnode *replacement; ///< The new explicit lane Varnode
int4 size; ///< Size of the lane Varnode in bytes
uintb val; ///< Value of constant or position within the original big Varnode
TransformOp *def; ///< Defining op for new Varnode
Varnode *vn; ///< Original \b big Varnode of which \b this is a component
Varnode *replacement; ///< The new explicit lane Varnode
uint4 type; ///< Type of new Varnode
int4 byteSize; ///< Size of the lane Varnode in bytes
int4 bitSize; ///< Size of the logical value in bits
uintb val; ///< Value of constant or (bit) position within the original big Varnode
TransformOp *def; ///< Defining op for new Varnode
void createReplacement(Funcdata *fd); ///< Create the new/modified variable this placeholder represents
};
@ -110,18 +111,20 @@ class TransformManager {
void placeInputs(void); ///< Set input Varnodes for all new ops
public:
TransformManager(Funcdata *f) { fd = f; } ///< Constructor
virtual ~TransformManager(void) {}
virtual bool preserveAddress(Varnode *vn,int4 bitSize,int4 lsbOffset) const;
TransformVar *newPreexistingVarnode(Varnode *vn); ///< Make placeholder for preexisting Varnode
TransformVar *newUnique(int4 size); ///< Make placeholder for new unique space Varnode
TransformVar *newConstant(int4 size,uintb val); ///< Make placeholder for constant Varnode
TransformVar *newIop(Varnode *vn); ///< Make placeholder for special iop constant
TransformVar *newPiece(Varnode *vn,int4 size,int4 lsbOffset); ///< Make placeholder for piece of a Varnode
TransformVar *newPiece(Varnode *vn,int4 bitSize,int4 lsbOffset); ///< Make placeholder for piece of a Varnode
void newSplit(vector<TransformVar *> &res,Varnode *vn,const LaneDescription &description);
TransformOp *newOpReplace(int4 numParams,OpCode opc,PcodeOp *replace);
TransformOp *newOp(int4 numParams,OpCode opc,TransformOp *follow);
TransformOp *newPreexistingOp(int4 numParams,OpCode opc,PcodeOp *originalOp);
TransformVar *getPreexistingVarnode(Varnode *vn); ///< Get (or create) placeholder for preexisting Varnode
TransformVar *getPiece(Varnode *vn,int4 size,int4 lsbOffset); ///< Get (or create) placeholder piece
TransformVar *getPiece(Varnode *vn,int4 bitSize,int4 lsbOffset); ///< Get (or create) placeholder piece
void getSplit(vector<TransformVar *> &res,Varnode *vn,const LaneDescription &description);
void opSetInput(TransformOp *rop,TransformVar *rvn,int4 slot); ///< Mark given variable as input to given op
void opSetOutput(TransformOp *rop,TransformVar *rvn); ///< Mark given variable as output of given op