A pool of Rules that apply simultaneously. More...

#include <action.hh>

Inheritance diagram for ActionPool:

Public Member Functions
	ActionPool (uint4 f, const string &nm)
	Construct providing properties and name.

virtual	~ActionPool (void)
	Destructor.

void	addRule (Rule *rl)
	Add a Rule to the pool. More...

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

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

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

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

virtual	~Action (void)
	Destructor.

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

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

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 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...

Private Member Functions
int4	processOp (PcodeOp *op, Funcdata &data)
	Apply the next possible Rule to a PcodeOp. More...

Private Attributes
vector< Rule * >	allrules
	The set of Rules in this ActionPool.

vector< Rule * >	perop [CPUI_MAX]
	Rules associated with each OpCode.

PcodeOpTree::const_iterator	op_state
	Current PcodeOp up for rule application.

int4	rule_index
	Iterator over Rules for one OpCode.

Additional Inherited Members
Public Types inherited from Action
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...

Protected Member Functions inherited from Action
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 inherited from Action
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

A pool of Rules that apply simultaneously.

This class groups together a set of Rules as a formal Action. Rules are given an opportunity to apply to every PcodeOp in a function. Usually rule_repeatapply is enabled for this action, which causes all Rules to apply repeatedly until no Rule can make an additional change.

Member Function Documentation

void ActionPool::addRule ( Rule * rl )

Add a Rule to the pool.

This method should only be invoked during construction of this ActionPool A single Rule is added to the pool. The Rule's OpCode is inspected by this method.

Parameters

rl	is the Rule to add

References Rule::getOpList().

Referenced by clone(), and ActionDatabase::universalAction().

int4 ActionPool::apply ( Funcdata & data )

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)

Implements Action.

References Funcdata::beginOpAll(), Funcdata::endOpAll(), Action::status, and Action::status_mid.

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

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

Implements Action.

References addRule(), Rule::clone(), Action::flags, and Action::getName().

Referenced by Rule::getBreakPoint().

Rule * ActionPool::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 from Action.

References Rule::getName(), and Action::name.

int4 ActionPool::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 from Action.

References Action::break_action, Rule::getBreakPoint(), Rule::getName(), Rule::isDisabled(), and Action::print().

void ActionPool::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 from Action.

References PcodeOp::getSeqNum(), Action::printState(), Action::status, and Action::status_mid.

void ActionPool::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 from Action.

References Action::printStatistics(), and ActionDatabase::universalname.

Referenced by Rule::applyOp().

int4 ActionPool::processOp	(	PcodeOp *	op,
		Funcdata &	data
	)

private

Apply the next possible Rule to a PcodeOp.

This method attempts to apply each Rule to the current PcodeOp Action breakpoints are checked if the Rule successfully applies. 0 is returned for no breakpoint, -1 if a breakpoint occurs. If a breakpoint did occur, an additional call to processOp() will pick up where it left off before the breakpoint. The PcodeOp iterator is advanced.

Parameters