Large scale transformations applied to the varnode/op graph. More...

#include <action.hh>

Inheritance diagram for Action:

Public Types
enum	ruleflags { rule_repeatapply = 4, rule_onceperfunc = 8, rule_oneactperfunc = 16, rule_debug = 32, rule_warnings_on = 64, rule_warnings_given = 128 }
	Boolean behavior properties governing this particular Action. More...

enum	statusflags { status_start =1, status_breakstarthit =2, status_repeat =4, status_mid =8, status_end =16, status_actionbreak =32 }
	Boolean properties describing the status of an action. More...

enum	breakflags { break_start = 1, tmpbreak_start = 2, break_action = 4, tmpbreak_action = 8 }
	Break points associated with an Action. More...

Public Member Functions
	Action (uint4 f, const string &nm, const string &g)
	Base constructor for an Action. More...

virtual	~Action (void)
	Destructor.

virtual void	printStatistics (ostream &s) const
	Dump statistics to stream. More...

int4	perform (Funcdata &data)
	Perform this action (if necessary) More...

bool	setBreakPoint (uint4 tp, const string &specify)
	Set a breakpoint on this action. More...

virtual void	clearBreakPoints (void)
	Clear all breakpoints set on this Action.

bool	setWarning (bool val, const string &specify)
	Set a warning on this action. More...

bool	disableRule (const string &specify)
	Disable a specific Rule within this. More...

bool	enableRule (const string &specify)
	Enable a specific Rule within this. More...

const string &	getName (void) const
	Get the Action's name.

const string &	getGroup (void) const
	Get the Action's group.

uint4	getStatus (void) const
	Get the current status of this Action.

uint4	getNumTests (void)
	Get the number of times apply() was invoked.

uint4	getNumApply (void)

virtual Action *	clone (const ActionGroupList &grouplist) const =0
	Clone the Action. More...

virtual void	reset (Funcdata &data)
	Reset the Action for a new function. More...

virtual void	resetStats (void)
	Reset all the counts to zero. More...

virtual int4	apply (Funcdata &data)=0
	Make a single attempt to apply this Action. More...

virtual int4	print (ostream &s, int4 num, int4 depth) const
	Print a description of this Action to stream. More...

virtual void	printState (ostream &s) const
	Print status to stream. More...

virtual void	saveXml (ostream &s) const
	Save specifics of this action to stream.

virtual void	restoreXml (const Element el, Funcdata fd)
	Load specifics of action from XML.

virtual Action *	getSubAction (const string &specify)
	Retrieve a specific sub-action by name. More...

virtual Rule *	getSubRule (const string &specify)
	Retrieve a specific sub-rule by name. More...

Protected Member Functions
void	issueWarning (Architecture *glb)
	Warn that this Action has applied. More...

bool	checkStartBreak (void)
	Check start breakpoint. More...

bool	checkActionBreak (void)
	Check action breakpoint. More...

void	turnOnWarnings (void)
	Enable warnings for this Action.

void	turnOffWarnings (void)
	Disable warnings for this Action.

Protected Attributes
int4	lcount
	Changes not including last call to apply()

int4	count
	Number of changes made by this action so far.

uint4	status
	Current status.

uint4	breakpoint
	Breakpoint properties.

uint4	flags
	Behavior properties.

uint4	count_tests
	Number of times apply() has been called.

uint4	count_apply
	Number of times apply() made changes.

string	name
	Name of the action.

string	basegroup
	Base group this action belongs to.

Detailed Description

Large scale transformations applied to the varnode/op graph.

The base for objects that make changes to the syntax tree of a Funcdata The action is invoked through the apply(Funcdata &data) method. This base class keeps track of basic statistics about how the action is being applied. Derived classes indicate that a change has been applied by incrementing the count field. With OPACTION_DEBUG macro defined, actions support a break point debugging in console mode.

Member Enumeration Documentation

enum Action::breakflags

Break points associated with an Action.

Enumerator
break_start	Break at beginning of action.
tmpbreak_start	Temporary break at start of action.
break_action	Break if a change has been made.

enum Action::ruleflags

Boolean behavior properties governing this particular Action.

Enumerator
rule_repeatapply	Apply rule repeatedly until no change.
rule_onceperfunc	Apply rule once per function.
rule_oneactperfunc	Makes a change only once per function.
rule_debug	Print debug messages specifically for this action.
rule_warnings_on	If this action makes a change, issue a warning.
rule_warnings_given	A warning has been issued for this action.

enum Action::statusflags

Boolean properties describing the status of an action.

Enumerator
status_start	At start of action.
status_breakstarthit	At start after breakpoint.
status_repeat	Repeating the same action.
status_mid	In middle of action (use subclass status)
status_end	getFuncdata has completed once (for onceperfunc)
status_actionbreak	Completed full action last time but indicated action break.

Constructor & Destructor Documentation

Action::Action	(	uint4	f,
		const string &	nm,
		const string &	g
	)

Base constructor for an Action.

Specify the name, group, and properties of the Action

Parameters

f	is the collection of property flags
nm	is the Action name
g	is the Action group

References basegroup, breakpoint, count_apply, count_tests, flags, name, status, and status_start.

Member Function Documentation

virtual int4 Action::apply ( Funcdata & data )

pure virtual

Make a single attempt to apply this Action.

This is the main entry point for applying changes to a function that are specific to this Action. The method can inspect whatever it wants to decide if the Action does or does not apply. Changes are indicated by incrementing the count field.

Parameters

data	is the function to inspect/modify

Returns: 0 for a complete application, -1 for a partial completion (due to breakpoint)

Implemented in ActionPrototypeWarnings, ActionDynamicSymbols, ActionDynamicMapping, ActionCopyMarker, ActionDominantCopy, ActionHideShadow, ActionInferTypes, ActionUnjustifiedParams, ActionOutputPrototype, ActionInputPrototype, ActionMapGlobals, ActionRestructureHigh, ActionRestructureVarnode, ActionLikelyTrash, ActionRestrictLocal, ActionReturnRecovery, ActionActiveReturn, ActionActiveParam, ActionParamDouble, ActionFuncLinkOutOnly, ActionFuncLink, ActionExtraPopSetup, ActionDefaultParams, ActionPrototypeTypes, ActionNormalizeSetup, ActionSwitchNorm, ActionConditionalConst, ActionDeadCode, ActionDeterminedBranch, ActionRedundBranch, ActionDoNothing, ActionUnreachable, ActionNameVars, ActionMarkImplied, ActionMarkExplicit, ActionMergeType, ActionMergeMultiEntry, ActionMergeCopy, ActionMergeAdjacent, ActionMergeRequired, ActionNodeJoin, ActionMarkIndirectOnly, ActionReturnSplit, ActionAssignHigh, ActionSetCasts, ActionFinalStructure, ActionBlockStructure, ActionPreferComplement, ActionNonzeroMask, ActionHeritage, ActionNormalizeBranches, ActionPool, ActionSpacebase, ActionConstbase, ActionDirectWrite, ActionVarnodeProps, ActionDeindirect, ActionConstantPtr, ActionRestartGroup, ActionConditionalExe, ActionShadowVar, ActionMultiCse, ActionGroup, ActionForceGoto, ActionSegmentize, ActionLaneDivide, ActionStackPtrFlow, ActionStartTypes, ActionStartCleanUp, ActionStop, and ActionStart.

Referenced by perform().

bool Action::checkActionBreak ( void )

protected

Check action breakpoint.

Check if there was an active action breakpoint on this Action

Returns: true if there was an action breakpoint

References break_action, and breakpoint.

Referenced by ActionGroup::apply(), Rule::clearDisable(), and perform().

bool Action::checkStartBreak ( void )

protected

Check start breakpoint.

Check if there was an active start break point on this action

Returns: true if there was a start breakpoint

References break_start, breakpoint, flags, name, rule_debug, and tmpbreak_start.

Referenced by perform().

virtual Action* Action::clone ( const ActionGroupList & grouplist ) const

pure virtual

Clone the Action.

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

Parameters

grouplist is the list of groups being cloned

Returns: the cloned Action or NULL

Implemented in ActionPrototypeWarnings, ActionDynamicSymbols, ActionDynamicMapping, ActionCopyMarker, ActionDominantCopy, ActionHideShadow, ActionInferTypes, ActionUnjustifiedParams, ActionOutputPrototype, ActionInputPrototype, ActionMapGlobals, ActionRestructureHigh, ActionRestructureVarnode, ActionLikelyTrash, ActionRestrictLocal, ActionReturnRecovery, ActionActiveReturn, ActionActiveParam, ActionParamDouble, ActionFuncLinkOutOnly, ActionFuncLink, ActionExtraPopSetup, ActionDefaultParams, ActionPrototypeTypes, ActionNormalizeSetup, ActionSwitchNorm, ActionConditionalConst, ActionDeadCode, ActionDeterminedBranch, ActionRedundBranch, ActionDoNothing, ActionUnreachable, ActionNameVars, ActionMarkImplied, ActionMarkExplicit, ActionMergeType, ActionMergeMultiEntry, ActionMergeCopy, ActionMergeAdjacent, ActionMergeRequired, ActionNodeJoin, ActionMarkIndirectOnly, ActionReturnSplit, ActionAssignHigh, ActionSetCasts, ActionFinalStructure, ActionBlockStructure, ActionPreferComplement, ActionNonzeroMask, ActionHeritage, ActionPool, ActionNormalizeBranches, ActionSpacebase, ActionConstbase, ActionDirectWrite, ActionVarnodeProps, ActionDeindirect, ActionConstantPtr, ActionRestartGroup, ActionConditionalExe, ActionShadowVar, ActionMultiCse, ActionGroup, ActionForceGoto, ActionSegmentize, ActionLaneDivide, ActionStackPtrFlow, ActionStartTypes, ActionStartCleanUp, ActionStop, and ActionStart.

Referenced by ActionGroup::clone(), ActionRestartGroup::clone(), ActionDatabase::deriveAction(), and ActionDatabase::toggleAction().

bool Action::disableRule ( const string & specify )

Disable a specific Rule within this.

An individual Rule can be disabled by name, within this Action. It must be specified by a ':' separated name path, from the root Action down to the specific Rule.

Parameters

specify is the name path

Returns: true if the Rule is successfully disabled

References getSubRule(), and Rule::setDisable().

Referenced by OptionToggleRule::apply().

bool Action::enableRule ( const string & specify )

Enable a specific Rule within this.

An individual Rule can be enabled by name, within this Action. It must be specified by a ':' separated name path, from the root Action down to the specific Rule.

Parameters

specify is the name path

Returns: true if the Rule is successfully enabled

References Rule::clearDisable(), and getSubRule().

Referenced by OptionToggleRule::apply().

uint4 Action::getNumApply ( void )

inline

Get the number of times apply() made changes

Action * Action::getSubAction ( const string & specify )

virtual

Retrieve a specific sub-action by name.

If this Action matches the given name, it is returned. If the name matches a sub-action, this is returned.

Parameters

specify is the action name to match

Returns: the matching Action or sub-action

Reimplemented in ActionGroup.

References name.

Referenced by ActionGroup::getSubAction(), setBreakPoint(), and setWarning().

Rule * Action::getSubRule ( const string & specify )

virtual

Retrieve a specific sub-rule by name.

Find a Rule, as a component of this Action, with the given name.

Parameters

specify is the name of the rule

Returns: the matching sub-rule

Reimplemented in ActionPool, and ActionGroup.

Referenced by disableRule(), enableRule(), setBreakPoint(), and setWarning().

void Action::issueWarning ( Architecture * glb )

protected

Warn that this Action has applied.

If enabled, issue a warning that this Action has been applied

Parameters

glb	is the controlling Architecture

References flags, name, Architecture::printMessage(), rule_warnings_given, and rule_warnings_on.

Referenced by perform().

int4 Action::perform ( Funcdata & data )

Perform this action (if necessary)

Run this Action until completion or a breakpoint occurs. Depending on the behavior properties of this instance, the apply() method may get called many times or none. Generally the number of changes made by the action is returned, but if a breakpoint occurs -1 is returned. A successive call to perform() will "continue" from the break point.

Parameters

data	is the function being acted on

Returns: the number of changes or -1

References apply(), checkActionBreak(), checkStartBreak(), count, count_apply, count_tests, flags, Funcdata::getArch(), getName(), issueWarning(), lcount, rule_onceperfunc, rule_oneactperfunc, rule_repeatapply, status, status_actionbreak, status_breakstarthit, status_end, status_mid, status_repeat, and status_start.

Referenced by DecompileAt::rawAction(), and Funcdata::stageJumpTable().

int4 Action::print	(	ostream &	s,
		int4	num,
		int4	depth
	)		const

virtual

Print a description of this Action to stream.

The description is suitable for a console mode listing of actions

Parameters

s	is the output stream
num	is a starting index to associate with the action (and its sub-actions)
depth	is amount of indent necessary before printing

Returns: the next available index

Reimplemented in ActionPool, and ActionGroup.

References break_action, break_start, breakpoint, flags, name, rule_onceperfunc, rule_repeatapply, and tmpbreak_start.

Referenced by ActionGroup::print(), and ActionPool::print().

void Action::printState ( ostream & s ) const

virtual

Print status to stream.

This will the Action name and the next step to execute

Parameters

s	is the output stream

Reimplemented in ActionPool, and ActionGroup.

References name, status, status_breakstarthit, status_end, status_mid, status_repeat, and status_start.

Referenced by ActionGroup::printState(), and ActionPool::printState().

void Action::printStatistics ( ostream & s ) const

virtual

Dump statistics to stream.

Print out the collected statistics for the Action to stream

Parameters

s	is the output stream

Reimplemented in ActionPool, and ActionGroup.

References count_apply, count_tests, and name.

Referenced by ActionGroup::printStatistics(), and ActionPool::printStatistics().

void Action::reset ( Funcdata & data )

virtual

Reset the Action for a new function.

Parameters

data	is the new function this Action may affect

Reimplemented in ActionInferTypes, ActionRestructureVarnode, ActionPool, ActionConstantPtr, ActionRestartGroup, ActionGroup, ActionSegmentize, and ActionStackPtrFlow.

References flags, rule_warnings_given, status, and status_start.

Referenced by DecompileAt::rawAction(), ActionGroup::reset(), ActionPool::reset(), and Funcdata::stageJumpTable().

void Action::resetStats ( void )

virtual

Reset all the counts to zero.

Reset the statistics

Reimplemented in ActionPool, and ActionGroup.

References count_apply, and count_tests.

Referenced by ActionGroup::resetStats(), and ActionPool::resetStats().

bool Action::setBreakPoint	(	uint4	tp,
		const string &	specify
	)

Set a breakpoint on this action.

A breakpoint can be placed on this Action or some sub-action by properly specifying the (sub)action name.

Parameters

tp	is the type of breakpoint (break_start, break_action, etc.)
specify	is the (possibly sub)action to apply the break point to

Returns: true if a breakpoint was successfully set

References breakpoint, getSubAction(), getSubRule(), and Rule::setBreak().

bool Action::setWarning	(	bool	val,
		const string &	specify
	)

Set a warning on this action.

If enabled, a warning will be printed whenever this action applies. The warning can be toggled for this Action or some sub-action by specifying its name.

Parameters

val	is the toggle value for the warning
specify	is the name of the action or sub-action to toggle

Returns: true if the warning was successfully toggled

References getSubAction(), getSubRule(), turnOffWarnings(), Rule::turnOffWarnings(), turnOnWarnings(), and Rule::turnOnWarnings().

Referenced by OptionWarning::apply().

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

action.hh
action.cc

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation