Simply a double precision operation, pushing down one level, starting from a marked double precision input. More...

#include <double.hh>

Inheritance diagram for ghidra::RuleDoubleIn:

Collaboration diagram for ghidra::RuleDoubleIn:

Public Member Functions
	RuleDoubleIn (const string &g)
	Constructor.

virtual Rule *	clone (const ActionGroupList &grouplist) const
	Clone the Rule.

virtual void	reset (Funcdata &data)
	Reset this Rule.

virtual void	getOpList (vector< uint4 > &oplist) const
	List of op codes this rule operates on.

virtual int4	applyOp (PcodeOp *op, Funcdata &data)
	Attempt to apply this Rule.

Public Member Functions inherited from ghidra::Rule
	Rule (const string &g, uint4 fl, const string &nm)
	Construct given group, properties name.

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.

uint4	getBreakPoint (void) const
	Return breakpoint toggles.

virtual void	resetStats (void)
	Reset Rule statistics.

virtual void	printStatistics (ostream &s) const
	Print statistics for this Rule.

Private Member Functions
int4	attemptMarking (Varnode vn, PcodeOp subpieceOp)
	Determine if the given Varnode from a SUBPIECE should be marked as a double precision piece.

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

Detailed Description

Simply a double precision operation, pushing down one level, starting from a marked double precision input.

This rule starts by trying to find a pair of Varnodes that are SUBPIECE from a whole, are marked as double precision, and that are then used in some double precision operation. The various operation forms are overlayed on the data-flow until a matching one is found. The pieces of the double precision operation are then transformed into a single logical operation on the whole.

Member Function Documentation

◆ applyOp()

int4 ghidra::RuleDoubleIn::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

op	is the given PcodeOp where the Rule may apply
data	is the function to which to apply

Reimplemented from ghidra::Rule.

References ghidra::SplitVarnode::applyRuleIn(), attemptMarking(), ghidra::PcodeOp::getIn(), ghidra::PcodeOp::getOut(), ghidra::Funcdata::hasUnreachableBlocks(), ghidra::Varnode::isPrecisHi(), ghidra::Varnode::isPrecisLo(), and ghidra::SplitVarnode::wholeList().

◆ attemptMarking()

int4 ghidra::RuleDoubleIn::attemptMarking	(	Varnode *	vn,
		PcodeOp *	subpieceOp
	)

private

Determine if the given Varnode from a SUBPIECE should be marked as a double precision piece.

If the given Varnode looks like the most significant piece, there is another SUBPIECE that looks like the least significant piece, and the whole is from an operation that produces a logical whole, then mark the Varnode (and its companion) as double precision pieces and return 1.

Parameters

vn	is the given Varnode
subpieceOp	is the SUBPIECE PcodeOp producing the Varnode

Returns: 1 if the pieces are marked, 0 otherwise

References ghidra::Varnode::beginDescend(), ghidra::PcodeOp::code(), ghidra::CPUI_SUBPIECE, ghidra::Varnode::endDescend(), ghidra::Varnode::getDef(), ghidra::PcodeOp::getIn(), ghidra::Varnode::getOffset(), ghidra::PcodeOp::getOpcode(), ghidra::PcodeOp::getOut(), ghidra::Varnode::getSize(), ghidra::Varnode::getType(), ghidra::TypeOp::isArithmeticOp(), ghidra::TypeOp::isFloatingPointOp(), ghidra::Varnode::isInput(), ghidra::Datatype::isPrimitiveWhole(), ghidra::Varnode::isTypeLock(), ghidra::Varnode::isWritten(), ghidra::Varnode::setPrecisHi(), and ghidra::Varnode::setPrecisLo().

Referenced by applyOp().

◆ clone()

virtual Rule * ghidra::RuleDoubleIn::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

grouplist is the list of groups being cloned

Returns: the cloned Rule or NULL

Implements ghidra::Rule.

References ghidra::ActionGroupList::contains(), and ghidra::Rule::getGroup().

◆ getOpList()

void ghidra::RuleDoubleIn::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

oplist is the array to populate

Reimplemented from ghidra::Rule.

References ghidra::CPUI_SUBPIECE.

◆ reset()

void ghidra::RuleDoubleIn::reset ( Funcdata & data )

virtual

Reset this Rule.

Any state that is specific to a particular function is cleared by this method. This method can be used to initialize a Rule based on a new function it will apply to

Parameters

data	is the new function about to be transformed

Reimplemented from ghidra::Rule.

References ghidra::Funcdata::setDoublePrecisRecovery().

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

/builds/appsec/reveng-binrw/ghidraplusplus/src/dec/double.hh
/builds/appsec/reveng-binrw/ghidraplusplus/src/dec/double.cc

Public Member Functions

Private Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ applyOp()

◆ attemptMarking()

◆ clone()

◆ getOpList()

◆ reset()