decompiler  1.0.0
Public Member Functions | List of all members
RuleRangeMeld Class Reference

Merge range conditions of the form: V s< c, c s< V, V == c, V != c More...

Inheritance diagram for RuleRangeMeld:
Rule

Public Member Functions

 RuleRangeMeld (const string &g)
 Constructor.
 
virtual Ruleclone (const ActionGroupList &grouplist) const
 Clone the Rule. More...
 
virtual void getOpList (vector< uint4 > &oplist) const
 List of op codes this rule operates on. More...
 
virtual int4 applyOp (PcodeOp *op, Funcdata &data)
 Attempt to apply this Rule. More...
 
- Public Member Functions inherited from Rule
 Rule (const string &g, uint4 fl, const string &nm)
 Construct given group, properties name. More...
 
virtual ~Rule (void)
 Destructor.
 
const string & getName (void) const
 Return the name of this Rule.
 
const string & getGroup (void) const
 Return the group this Rule belongs to.
 
uint4 getNumTests (void)
 Get number of attempted applications.
 
uint4 getNumApply (void)
 Get number of successful applications.
 
void setBreak (uint4 tp)
 Set a breakpoint on this Rule.
 
void clearBreak (uint4 tp)
 Clear a breakpoint on this Rule.
 
void clearBreakPoints (void)
 Clear all breakpoints on this Rule.
 
void turnOnWarnings (void)
 Enable warnings for this Rule.
 
void turnOffWarnings (void)
 Disable warnings for this Rule.
 
bool isDisabled (void) const
 Return true if this Rule is disabled.
 
void setDisable (void)
 Disable this Rule (within its pool)
 
void clearDisable (void)
 Enable this Rule (within its pool)
 
bool checkActionBreak (void)
 Check if an action breakpoint is turned on. More...
 
uint4 getBreakPoint (void) const
 Return breakpoint toggles.
 
virtual void reset (Funcdata &data)
 Reset this Rule. More...
 
virtual void resetStats (void)
 Reset Rule statistics. More...
 
virtual void printStatistics (ostream &s) const
 Print statistics for this Rule. More...
 

Additional Inherited Members

- Public Types inherited from Rule
enum  typeflags { type_disable = 1, rule_debug = 2, warnings_on = 4, warnings_given = 8 }
 Properties associated with a Rule. More...
 

Detailed Description

Merge range conditions of the form: V s< c, c s< V, V == c, V != c

Look for combinations of these forms based on BOOL_AND and BOOL_OR, such as

<range1>&&<range2> OR <range1>||<range2>

Try to union or intersect the ranges to produce a more concise expression.

Member Function Documentation

int4 RuleRangeMeld::applyOp ( PcodeOp op,
Funcdata data 
)
virtual

Attempt to apply this Rule.

This method contains the main logic for applying the Rule. It must use a given PcodeOp as the point at which the Rule applies. If it does apply, changes are made directly to the function and 1 (non-zero) is returned, otherwise 0 is returned.

Parameters
opis the given PcodeOp where the Rule may apply
datais the function to which to apply

Reimplemented from Rule.

References CircleRange::circleUnion(), PcodeOp::code(), Varnode::copySymbolIfValid(), CPUI_BOOL_AND, CPUI_BOOL_NEGATE, CPUI_COPY, functionalEquality(), Varnode::getDef(), PcodeOp::getIn(), Varnode::getSize(), CircleRange::intersect(), PcodeOp::isBoolOutput(), Varnode::isHeritageKnown(), Varnode::isWritten(), Funcdata::newConstant(), Funcdata::opRemoveInput(), Funcdata::opSetInput(), Funcdata::opSetOpcode(), CircleRange::pullBack(), and CircleRange::translate2Op().

virtual Rule* RuleRangeMeld::clone ( const ActionGroupList grouplist) const
inlinevirtual

Clone the Rule.

If this Rule is a member of one of the groups in the grouplist, this returns a clone of the Rule, otherwise NULL is returned.

Parameters
grouplistis the list of groups being cloned
Returns
the cloned Rule or NULL

Implements Rule.

References ActionGroupList::contains(), and AddTreeState::data.

void RuleRangeMeld::getOpList ( vector< uint4 > &  oplist) const
virtual

List of op codes this rule operates on.

Populate the given array with all possible OpCodes this Rule might apply to. By default, this method returns all possible OpCodes

Parameters
oplistis the array to populate

Reimplemented from Rule.

References CPUI_BOOL_AND, and CPUI_BOOL_OR.


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