Description

Defines RISC operators for the MultiSemantics domain.

Invoking a RISC operation in the MultiSemantics domain causes the same operation to be invoked for each of its subdomains provided all arguments are valid in those subdomains (i.e., SValue::is_valid() returns true).

Definition at line 234 of file MultiSemantics.h.

#include <Rose/BinaryAnalysis/InstructionSemantics/MultiSemantics.h>

Inheritance diagram for Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators:

[legend]

Collaboration diagram for Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators:

[legend]

Classes
class	Cursor
	Iterates over valid subdomains whose inputs are valid. More...

Public Types
using	Super = BaseSemantics::RiscOperators
	Base type.

using	Ptr = RiscOperatorsPtr
	Shared-ownership pointer.

Public Types inherited from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators
enum class	IteStatus { NEITHER , A , B , BOTH }
	Status for iteWithStatus operation. More...

using	Ptr = RiscOperatorsPtr
	Shared-ownership pointer.

Public Member Functions
virtual BaseSemantics::RiscOperatorsPtr	create (const BaseSemantics::SValuePtr &protoval, const SmtSolverPtr &solver=SmtSolverPtr()) const override
	Virtual allocating constructor.

virtual BaseSemantics::RiscOperatorsPtr	create (const BaseSemantics::StatePtr &, const SmtSolverPtr &solver=SmtSolverPtr()) const override
	Virtual allocating constructor.

virtual size_t	add_subdomain (const BaseSemantics::RiscOperatorsPtr &subdomain, const std::string &name, bool activate=true)
	Add a subdomain to this MultiSemantics domain.

virtual Formatter &	get_formatter ()
	Returns a formatter containing the names of the subdomains.

virtual size_t	nsubdomains () const
	Returns the number of subdomains added to this MultiDomain.

virtual BaseSemantics::RiscOperatorsPtr	get_subdomain (size_t idx) const
	Returns the RiscOperators for a subdomain.

virtual bool	is_active (size_t idx) const
	Returns true if a subdomain is active.

virtual void	clear_active (size_t idx)
	Makes a subdomain inactive.

virtual void	set_active (size_t idx, bool status)
	Makes a subdomain active or inactive.

virtual void	before (size_t)
	Called before each subdomain RISC operation.

virtual void	after (size_t)
	Called after each subdomain RISC operation.

virtual SValuePtr	svalue_empty (size_t nbits)
	Convenience function for SValue::create_empty().

virtual void	print (std::ostream &o, BaseSemantics::Formatter &) const override
	Print multi-line output for this object.

virtual void	startInstruction (SgAsmInstruction *insn) override
	Called at the beginning of every instruction.

virtual void	finishInstruction (SgAsmInstruction *insn) override
	Called at the end of every instruction.

virtual BaseSemantics::SValuePtr	undefined_ (size_t nbits) override
	Returns a new undefined value.

virtual BaseSemantics::SValuePtr	unspecified_ (size_t nbits) override
	Returns a new undefined value.

virtual BaseSemantics::SValuePtr	number_ (size_t nbits, uint64_t value) override
	Returns a number of the specified bit width.

virtual BaseSemantics::SValuePtr	boolean_ (bool) override
	Returns a Boolean value.

virtual BaseSemantics::SValuePtr	bottom_ (size_t nbits) override
	Returns a data-flow bottom value.

virtual BaseSemantics::SValuePtr	filterCallTarget (const BaseSemantics::SValuePtr &) override
	Invoked to filter call targets.

virtual BaseSemantics::SValuePtr	filterReturnTarget (const BaseSemantics::SValuePtr &) override
	Invoked to filter return targets.

virtual BaseSemantics::SValuePtr	filterIndirectJumpTarget (const BaseSemantics::SValuePtr &) override
	Invoked to filter indirect jumps.

virtual BaseSemantics::SValuePtr	and_ (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &b) override
	Computes bit-wise AND of two values.

virtual BaseSemantics::SValuePtr	or_ (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &b) override
	Computes bit-wise OR of two values.

virtual BaseSemantics::SValuePtr	xor_ (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &b) override
	Computes bit-wise XOR of two values.

virtual BaseSemantics::SValuePtr	invert (const BaseSemantics::SValuePtr &a) override
	One's complement.

virtual BaseSemantics::SValuePtr	extract (const BaseSemantics::SValuePtr &a, size_t begin_bit, size_t end_bit) override
	Extracts bits from a value.

virtual BaseSemantics::SValuePtr	concat (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &b) override
	Concatenates the bits of two values.

virtual BaseSemantics::SValuePtr	leastSignificantSetBit (const BaseSemantics::SValuePtr &a) override
	Returns position of least significant set bit; zero when no bits are set.

virtual BaseSemantics::SValuePtr	mostSignificantSetBit (const BaseSemantics::SValuePtr &a) override
	Returns position of most significant set bit; zero when no bits are set.

virtual BaseSemantics::SValuePtr	rotateLeft (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &nbits) override
	Rotate bits to the left.

virtual BaseSemantics::SValuePtr	rotateRight (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &nbits) override
	Rotate bits to the right.

virtual BaseSemantics::SValuePtr	shiftLeft (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &nbits) override
	Returns arg shifted left.

virtual BaseSemantics::SValuePtr	shiftRight (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &nbits) override
	Returns arg shifted right logically (no sign bit).

virtual BaseSemantics::SValuePtr	shiftRightArithmetic (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &nbits) override
	Returns arg shifted right arithmetically (with sign bit).

virtual BaseSemantics::SValuePtr	equalToZero (const BaseSemantics::SValuePtr &a) override
	Determines whether a value is equal to zero.

virtual BaseSemantics::SValuePtr	iteWithStatus (const BaseSemantics::SValuePtr &cond, const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &b, IteStatus &) override
	If-then-else with status.

virtual BaseSemantics::SValuePtr	unsignedExtend (const BaseSemantics::SValuePtr &a, size_t new_width) override
	Extend (or shrink) operand `a` so it is `nbits` wide by adding or removing high-order bits.

virtual BaseSemantics::SValuePtr	signExtend (const BaseSemantics::SValuePtr &a, size_t new_width) override
	Sign extends a value.

virtual BaseSemantics::SValuePtr	add (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &b) override
	Adds two integers of equal size.

virtual BaseSemantics::SValuePtr	addWithCarries (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &b, const BaseSemantics::SValuePtr &c, BaseSemantics::SValuePtr &carry_out) override
	Add two values of equal size and a carry bit.

virtual BaseSemantics::SValuePtr	negate (const BaseSemantics::SValuePtr &a) override
	Two's complement.

virtual BaseSemantics::SValuePtr	signedDivide (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &b) override
	Divides two signed values.

virtual BaseSemantics::SValuePtr	signedModulo (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &b) override
	Calculates modulo with signed values.

virtual BaseSemantics::SValuePtr	signedMultiply (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &b) override
	Multiplies two signed values.

virtual BaseSemantics::SValuePtr	unsignedDivide (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &b) override
	Divides two unsigned values.

virtual BaseSemantics::SValuePtr	unsignedModulo (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &b) override
	Calculates modulo with unsigned values.

virtual BaseSemantics::SValuePtr	unsignedMultiply (const BaseSemantics::SValuePtr &a, const BaseSemantics::SValuePtr &b) override
	Multiply two unsigned values.

virtual BaseSemantics::SValuePtr	fpFromInteger (const BaseSemantics::SValuePtr &, SgAsmFloatType *) override
	Construct a floating-point value from an integer value.

virtual BaseSemantics::SValuePtr	fpToInteger (const BaseSemantics::SValuePtr &, SgAsmFloatType *, const BaseSemantics::SValuePtr &) override
	Construct an integer value from a floating-point value.

virtual BaseSemantics::SValuePtr	fpConvert (const BaseSemantics::SValuePtr &, SgAsmFloatType , SgAsmFloatType ) override
	Convert from one floating-point type to another.

virtual BaseSemantics::SValuePtr	fpIsNan (const BaseSemantics::SValuePtr &, SgAsmFloatType *) override
	Whether a floating-point value is a special not-a-number bit pattern.

virtual BaseSemantics::SValuePtr	fpIsDenormalized (const BaseSemantics::SValuePtr &, SgAsmFloatType *) override
	Whether a floating-point value is denormalized.

virtual BaseSemantics::SValuePtr	fpIsZero (const BaseSemantics::SValuePtr &, SgAsmFloatType *) override
	Whether a floating-point value is equal to zero.

virtual BaseSemantics::SValuePtr	fpIsInfinity (const BaseSemantics::SValuePtr &, SgAsmFloatType *) override
	Whether a floating-point value is infinity.

virtual BaseSemantics::SValuePtr	fpSign (const BaseSemantics::SValuePtr &, SgAsmFloatType *) override
	Sign of floating-point value.

virtual BaseSemantics::SValuePtr	fpEffectiveExponent (const BaseSemantics::SValuePtr &, SgAsmFloatType *) override
	Exponent of floating-point value.

virtual BaseSemantics::SValuePtr	fpAdd (const BaseSemantics::SValuePtr &, const BaseSemantics::SValuePtr &, SgAsmFloatType *) override
	Add two floating-point values.

virtual BaseSemantics::SValuePtr	fpSubtract (const BaseSemantics::SValuePtr &, const BaseSemantics::SValuePtr &, SgAsmFloatType *) override
	Subtract one floating-point value from another.

virtual BaseSemantics::SValuePtr	fpMultiply (const BaseSemantics::SValuePtr &, const BaseSemantics::SValuePtr &, SgAsmFloatType *) override
	Multiply two floating-point values.

virtual BaseSemantics::SValuePtr	fpDivide (const BaseSemantics::SValuePtr &, const BaseSemantics::SValuePtr &, SgAsmFloatType *) override
	Divide one floating-point value by another.

virtual BaseSemantics::SValuePtr	fpSquareRoot (const BaseSemantics::SValuePtr &, SgAsmFloatType *) override
	Square root.

virtual BaseSemantics::SValuePtr	fpRoundTowardZero (const BaseSemantics::SValuePtr &, SgAsmFloatType *) override
	Round toward zero.

virtual BaseSemantics::SValuePtr	reinterpret (const BaseSemantics::SValuePtr &, SgAsmType *) override
	Reinterpret an expression as a different type.

virtual BaseSemantics::SValuePtr	readRegister (RegisterDescriptor reg, const BaseSemantics::SValuePtr &dflt) override
	Reads a value from a register.

virtual BaseSemantics::SValuePtr	peekRegister (RegisterDescriptor reg, const BaseSemantics::SValuePtr &dflt) override
	Obtain a register value without side effects.

virtual void	writeRegister (RegisterDescriptor reg, const BaseSemantics::SValuePtr &a) override
	Writes a value to a register.

virtual BaseSemantics::SValuePtr	readMemory (RegisterDescriptor segreg, const BaseSemantics::SValuePtr &addr, const BaseSemantics::SValuePtr &dflt, const BaseSemantics::SValuePtr &cond) override
	Reads a value from memory.

virtual BaseSemantics::SValuePtr	peekMemory (RegisterDescriptor segreg, const BaseSemantics::SValuePtr &addr, const BaseSemantics::SValuePtr &dflt) override
	Read memory without side effects.

virtual void	writeMemory (RegisterDescriptor segreg, const BaseSemantics::SValuePtr &addr, const BaseSemantics::SValuePtr &data, const BaseSemantics::SValuePtr &cond) override
	Writes a value to memory.

Public Member Functions inherited from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators
virtual SValuePtr	protoval () const
	Property: Prototypical semantic value.

virtual void	hash (Combinatorics::Hasher &)
	Compute hash of current state.

virtual void	comment (const std::string &)
	Inject a line comment into debugging streams.

virtual void	hlt ()
	Invoked for the x86 HLT instruction.

virtual void	cpuid ()
	Invoked for the x86 CPUID instruction.

virtual SValuePtr	rdtsc ()
	Invoked for the x86 RDTSC instruction.

virtual std::pair< SValuePtr, SValuePtr >	split (const SValuePtr &a, size_t splitPoint)
	Split a value into two narrower values.

virtual SValuePtr	countLeadingZeros (const SValuePtr &a)
	Count leading zero bits.

virtual SValuePtr	countLeadingOnes (const SValuePtr &a)
	Count leading one bits.

virtual SValuePtr	reverseElmts (const SValuePtr &a, size_t elmtNBits)
	Reverse parts of a value.

virtual SValuePtr	ite (const SValuePtr &cond, const SValuePtr &a, const SValuePtr &b) final
	If-then-else.

virtual SValuePtr	addCarry (const SValuePtr &a, const SValuePtr &b, SValuePtr &carryOut, SValuePtr &overflowed)
	Adds two integers of equal size and carry.

virtual SValuePtr	subtract (const SValuePtr &minuend, const SValuePtr &subtrahend)
	Subtract one value from another.

virtual SValuePtr	subtractCarry (const SValuePtr &minuend, const SValuePtr &subtrahend, SValuePtr &carryOut, SValuePtr &overflowed)
	Subtract one value from another and carry.

virtual void	interrupt (int majorNumber, int minorNumber)
	Unconditionally raise an interrupt.

virtual void	interrupt (const SValuePtr &majr, const SValuePtr &minr, const SValuePtr &raise)
	Invoked for instructions that cause an interrupt.

virtual void	raiseInterrupt (unsigned majorNumber, unsigned minorNumber, const SValuePtr &raise)
	Conditionally raise an interrupt.

virtual SValuePtr	convert (const SValuePtr &a, SgAsmType srcType, SgAsmType dstType)
	Convert value from one type to another.

virtual SmtSolverPtr	solver () const
	Property: Satisfiability module theory (SMT) solver.

virtual void	solver (const SmtSolverPtr &s)
	Property: Satisfiability module theory (SMT) solver.

const HotPatch &	hotPatch () const
	Property: Post-instruction hot patches.

HotPatch &	hotPatch ()
	Property: Post-instruction hot patches.

void	hotPatch (const HotPatch &hp)
	Property: Post-instruction hot patches.

virtual StatePtr	currentState () const
	Property: Current semantic state.

virtual void	currentState (const StatePtr &s)
	Property: Current semantic state.

virtual StatePtr	initialState () const
	Property: Optional lazily updated initial state.

virtual void	initialState (const StatePtr &s)
	Property: Optional lazily updated initial state.

virtual const std::string &	name () const
	Property: Name used for debugging.

virtual void	name (const std::string &s)
	Property: Name used for debugging.

void	print (std::ostream &stream, const std::string prefix="") const
	Print multi-line output for this object.

WithFormatter	with_format (Formatter &fmt)
	Used for printing RISC operators with formatting.

WithFormatter	operator+ (Formatter &fmt)
	Used for printing RISC operators with formatting.

WithFormatter	operator+ (const std::string &linePrefix)
	Used for printing RISC operators with formatting.

virtual size_t	nInsns () const
	Property: Number of instructions processed.

virtual void	nInsns (size_t n)
	Property: Number of instructions processed.

virtual SgAsmInstruction *	currentInstruction () const
	Property: Current instruction.

virtual void	currentInstruction (SgAsmInstruction *insn)
	Property: Current instruction.

virtual bool	isNoopRead () const
	Property: No-op read.

virtual void	isNoopRead (bool b)
	Property: No-op read.

virtual SValuePtr	concatLoHi (const SValuePtr &lowBits, const SValuePtr &highBits)
	Aliases for concatenation.

virtual SValuePtr	concatHiLo (const SValuePtr &highBits, const SValuePtr &lowBits)
	Aliases for concatenation.

virtual SValuePtr	isEqual (const SValuePtr &a, const SValuePtr &b)
	Equality comparison.

virtual SValuePtr	isNotEqual (const SValuePtr &a, const SValuePtr &b)
	Equality comparison.

virtual SValuePtr	isUnsignedLessThan (const SValuePtr &a, const SValuePtr &b)
	Comparison for unsigned values.

virtual SValuePtr	isUnsignedLessThanOrEqual (const SValuePtr &a, const SValuePtr &b)
	Comparison for unsigned values.

virtual SValuePtr	isUnsignedGreaterThan (const SValuePtr &a, const SValuePtr &b)
	Comparison for unsigned values.

virtual SValuePtr	isUnsignedGreaterThanOrEqual (const SValuePtr &a, const SValuePtr &b)
	Comparison for unsigned values.

virtual SValuePtr	isSignedLessThan (const SValuePtr &a, const SValuePtr &b)
	Comparison for signed values.

virtual SValuePtr	isSignedLessThanOrEqual (const SValuePtr &a, const SValuePtr &b)
	Comparison for signed values.

virtual SValuePtr	isSignedGreaterThan (const SValuePtr &a, const SValuePtr &b)
	Comparison for signed values.

virtual SValuePtr	isSignedGreaterThanOrEqual (const SValuePtr &a, const SValuePtr &b)
	Comparison for signed values.

virtual SValuePtr	readRegister (RegisterDescriptor reg)
	Reads a value from a register.

SValuePtr	peekRegister (RegisterDescriptor reg)
	Obtain a register value without side effects.

Static Public Member Functions
static RiscOperatorsPtr	instanceFromRegisters (const RegisterDictionaryPtr &)
	Static allocating constructor.

static RiscOperatorsPtr	instanceFromProtoval (const BaseSemantics::SValuePtr &protoval, const SmtSolverPtr &solver=SmtSolverPtr())

static RiscOperatorsPtr	instanceFromState (const BaseSemantics::StatePtr &, const SmtSolverPtr &solver=SmtSolverPtr())

static RiscOperatorsPtr	promote (const BaseSemantics::RiscOperatorsPtr &ops)

Static Public Member Functions inherited from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators
static RiscOperatorsPtr	promote (const RiscOperatorsPtr &x)

Protected Types
typedef std::vector< BaseSemantics::RiscOperatorsPtr >	Subdomains

Protected Member Functions
	RiscOperators (const BaseSemantics::SValuePtr &protoval, const SmtSolverPtr &)

	RiscOperators (const BaseSemantics::StatePtr &, const SmtSolverPtr &)

Protected Member Functions inherited from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators
	RiscOperators (const SValuePtr &protoval, const SmtSolverPtr &solver=SmtSolverPtr())

	RiscOperators (const StatePtr &state, const SmtSolverPtr &solver=SmtSolverPtr())

Protected Attributes
Subdomains	subdomains

std::vector< bool >	active

Formatter	formatter

Member Typedef Documentation

◆ Super

using Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::Super = BaseSemantics::RiscOperators

Base type.

Definition at line 237 of file MultiSemantics.h.

◆ Ptr

using Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::Ptr = RiscOperatorsPtr

Shared-ownership pointer.

Definition at line 240 of file MultiSemantics.h.

◆ Subdomains

typedef std::vector<BaseSemantics::RiscOperatorsPtr> Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::Subdomains

protected

Definition at line 243 of file MultiSemantics.h.

Constructor & Destructor Documentation

◆ ~RiscOperators()

Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::~RiscOperators ( )

virtual

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

Member Function Documentation

◆ instanceFromRegisters()

static RiscOperatorsPtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::instanceFromRegisters ( const RegisterDictionaryPtr & )

static

Static allocating constructor.

This constructor creates a new MultiDomain RiscOperators object that does't have any subdomains. The subdomains should be added before using this object. The regdict argument is not used in this class and is only present for consistency with other classes and for subclasses.

◆ create() [1/2]

virtual BaseSemantics::RiscOperatorsPtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::create	(	const BaseSemantics::SValuePtr &	protoval,
		const SmtSolverPtr &	solver = `SmtSolverPtr()`
	)		const

overridevirtual

Virtual allocating constructor.

The protoval is a prototypical semantic value that is used as a factory to create additional values as necessary via its virtual constructors. The state upon which the RISC operations operate must be set by modifying the currentState property. An optional SMT solver may be specified (see solver).

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ create() [2/2]

virtual BaseSemantics::RiscOperatorsPtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::create	(	const BaseSemantics::StatePtr &	state,
		const SmtSolverPtr &	solver = `SmtSolverPtr()`
	)		const

overridevirtual

Virtual allocating constructor.

The supplied state is that upon which the RISC operations operate and is also used to define the prototypical semantic value. Other states can be supplied by setting currentState. The prototypical semantic value is used as a factory to create additional values as necessary via its virtual constructors. An optional SMT solver may be specified (see solver).

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ add_subdomain()

virtual size_t Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::add_subdomain	(	const BaseSemantics::RiscOperatorsPtr &	subdomain,
		const std::string &	name,
		bool	activate = `true`
	)

virtual

Add a subdomain to this MultiSemantics domain.

Returns the identifier (index) used for this subdomain. The name is optional and used mostly for debugging; it is also added to the formatter and can be used when printing a semantic value. The activate argument indicates whether this subdomain is activated (default is true). Activated subdomains will participate in RISC operations if their arguments are defined. See also, is_active(), set_active(), and clear_active().

◆ get_formatter()

virtual Formatter & Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::get_formatter ( )

inlinevirtual

Returns a formatter containing the names of the subdomains.

Definition at line 295 of file MultiSemantics.h.

◆ get_subdomain()

virtual BaseSemantics::RiscOperatorsPtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::get_subdomain ( size_t idx ) const

virtual

Returns the RiscOperators for a subdomain.

The idx need not be valid.

◆ is_active()

virtual bool Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::is_active ( size_t idx ) const

virtual

Returns true if a subdomain is active.

Active subdomains participate in MultiSemantics RISC operations, provided all their operands are valid. This method returns false if idx is out of range or the subdomain's RiscOperators are null.

◆ clear_active()

virtual void Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::clear_active ( size_t idx )

virtual

Makes a subdomain inactive.

The subdomain's RiscOperators object is not removed or deleted by this method; the subdomain can be made active again at a later time.

◆ set_active()

virtual void Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::set_active	(	size_t	idx,
		bool	status
	)

virtual

Makes a subdomain active or inactive.

When making a subdomain inactive, its RiscOperators object is not removed or deleted, and it can be reactivated later. An invalid idx is ignored when deactivating; it must refer to a valid subdomain when activating.

◆ before()

virtual void Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::before ( size_t )

inlinevirtual

Called before each subdomain RISC operation.

The default implementation does nothing, but subclasses can override this to do interesting things. The idx is the index of the subdomain that's about to be called.

Definition at line 321 of file MultiSemantics.h.

◆ after()

virtual void Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::after ( size_t )

inlinevirtual

Called after each subdomain RISC operation.

The default implementation does nothing, but subclasses can override this to do interesting things. The idx is the index of the subdomain that was just called.

Definition at line 325 of file MultiSemantics.h.

◆ svalue_empty()

virtual SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::svalue_empty ( size_t nbits )

inlinevirtual

Convenience function for SValue::create_empty().

Definition at line 328 of file MultiSemantics.h.

References Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::SValue::promote(), and Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators::protoval().

◆ print()

virtual void Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::print	(	std::ostream &	stream,
		BaseSemantics::Formatter &	fmt
	)		const

overridevirtual

Print multi-line output for this object.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ startInstruction()

virtual void Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::startInstruction ( SgAsmInstruction * insn )

overridevirtual

Called at the beginning of every instruction.

This method is invoked every time the translation object begins processing an instruction. Some policies use this to update a pointer to the current instruction.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ finishInstruction()

virtual void Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::finishInstruction ( SgAsmInstruction * insn )

overridevirtual

Called at the end of every instruction.

This method is invoked whenever the translation object ends processing for an instruction. This is not called if there's an exception during processing.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ undefined_()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::undefined_ ( size_t nbits )

overridevirtual

Returns a new undefined value.

Uses the prototypical value to virtually construct the new value.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ unspecified_()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::unspecified_ ( size_t nbits )

overridevirtual

Returns a new undefined value.

Uses the prototypical value to virtually construct the new value.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ number_()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::number_	(	size_t	nbits,
		uint64_t	value
	)

overridevirtual

Returns a number of the specified bit width.

Uses the prototypical value to virtually construct a new value.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ boolean_()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::boolean_ ( bool value )

overridevirtual

Returns a Boolean value.

Uses the prototypical value to virtually construct a new value.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ bottom_()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::bottom_ ( size_t nbits )

overridevirtual

Returns a data-flow bottom value.

Uses the prototypical value to virtually construct a new value.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ filterCallTarget()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::filterCallTarget ( const BaseSemantics::SValuePtr & a )

overridevirtual

Invoked to filter call targets.

This method is called whenever the translation object is about to invoke a function call. The target address is passed as an argument and a (new) target should be returned.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ filterReturnTarget()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::filterReturnTarget ( const BaseSemantics::SValuePtr & a )

overridevirtual

Invoked to filter return targets.

This method is called whenever the translation object is about to return from a function call (such as for the x86 "RET" instruction). The return address is passed as an argument and a (new) return address should be returned.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ filterIndirectJumpTarget()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::filterIndirectJumpTarget ( const BaseSemantics::SValuePtr & a )

overridevirtual

Invoked to filter indirect jumps.

This method is called whenever the translation object is about to unconditionally jump to a new address (such as for the x86 "JMP" instruction). The target address is passed as an argument and a (new) target address should be returned.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ and_()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::and_	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	b
	)

overridevirtual

Computes bit-wise AND of two values.

The operands must both have the same width; the result must be the same width as the operands.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ or_()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::or_	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	b
	)

overridevirtual

Computes bit-wise OR of two values.

The operands a and b must have the same width; the return value width will be the same as a and b.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ xor_()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::xor_	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	b
	)

overridevirtual

Computes bit-wise XOR of two values.

The operands a and b must have the same width; the result will be the same width as a and b.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ invert()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::invert ( const BaseSemantics::SValuePtr & a )

overridevirtual

One's complement.

The result will be the same size as the operand.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ extract()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::extract	(	const BaseSemantics::SValuePtr &	a,
		size_t	begin_bit,
		size_t	end_bit
	)

overridevirtual

Extracts bits from a value.

The specified bits from begin_bit (inclusive) through end_bit (exclusive) are copied into the low-order bits of the return value (other bits in the return value are cleared). The least significant bit is number zero. The begin_bit and end_bit values must be valid for the width of a.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ concat()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::concat	(	const BaseSemantics::SValuePtr &	lowBits,
		const BaseSemantics::SValuePtr &	highBits
	)

overridevirtual

Concatenates the bits of two values.

The bits of lowBits and highBits are concatenated so that the result has lowBits in the low-order bits and highBits in the high order bits. The width of the return value is the sum of the widths of lowBits and highBits.

Note that the order of arguments for this method is the reverse of the SymbolicExpression concatenation function.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ leastSignificantSetBit()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::leastSignificantSetBit ( const BaseSemantics::SValuePtr & a )

overridevirtual

Returns position of least significant set bit; zero when no bits are set.

The return value will have the same width as the operand, although this can be safely truncated to the log-base-2 + 1 width.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ mostSignificantSetBit()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::mostSignificantSetBit ( const BaseSemantics::SValuePtr & a )

overridevirtual

Returns position of most significant set bit; zero when no bits are set.

The return value will have the same width as the operand, although this can be safely truncated to the log-base-2 + 1 width.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ rotateLeft()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::rotateLeft	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	nbits
	)

overridevirtual

Rotate bits to the left.

The return value will have the same width as operand a. The nbits is interpreted as unsigned. The behavior is modulo the width of a regardless of whether the implementation makes that a special case or handles it naturally.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ rotateRight()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::rotateRight	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	nbits
	)

overridevirtual

Rotate bits to the right.

The return value will have the same width as operand a. The nbits is interpreted as unsigned. The behavior is modulo the width of a regardless of whether the implementation makes that a special case or handles it naturally.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ shiftLeft()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::shiftLeft	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	nbits
	)

overridevirtual

Returns arg shifted left.

The return value will have the same width as operand a. The nbits is interpreted as unsigned. New bits shifted into the value are zero. If nbits is equal to or larger than the width of a then the result is zero.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ shiftRight()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::shiftRight	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	nbits
	)

overridevirtual

Returns arg shifted right logically (no sign bit).

The return value will have the same width as operand a. The nbits is interpreted as unsigned. New bits shifted into the value are zero. If nbits is equal to or larger than the width of a then the result is zero.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ shiftRightArithmetic()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::shiftRightArithmetic	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	nbits
	)

overridevirtual

Returns arg shifted right arithmetically (with sign bit).

The return value will have the same width as operand a. The nbits is interpreted as unsigned. New bits shifted into the value are the same as the most significant bit (the "sign bit"). If nbits is equal to or larger than the width of a then the result has all bits cleared or all bits set depending on whether the most significant bit was originally clear or set.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ equalToZero()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::equalToZero ( const BaseSemantics::SValuePtr & a )

overridevirtual

Determines whether a value is equal to zero.

Returns true, false, or undefined (in the semantic domain) depending on whether argument is zero.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ iteWithStatus()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::iteWithStatus	(	const BaseSemantics::SValuePtr &	cond,
		const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	b,
		IteStatus &	status
	)

overridevirtual

If-then-else with status.

Returns operand a if cond is true, operand b if cond is false, or some other value if the condition is unknown. The condition must be one bit wide; the widths of a and b must be equal; the return value width will be the same as a and b.

The status is an output that indicates how the main return value was determined.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ unsignedExtend()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::unsignedExtend	(	const BaseSemantics::SValuePtr &	a,
		size_t	new_width
	)

overridevirtual

Extend (or shrink) operand a so it is nbits wide by adding or removing high-order bits.

Added bits are always zeros. The result will be the specified new_width.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ signExtend()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::signExtend	(	const BaseSemantics::SValuePtr &	a,
		size_t	new_width
	)

overridevirtual

Sign extends a value.

The result will be the specified new_width, which must be at least as large as the original width.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ add()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::add	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	b
	)

overridevirtual

Adds two integers of equal size.

The width of a and b must be equal; the return value will have the same width as a and b.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ addWithCarries()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::addWithCarries	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	b,
		const BaseSemantics::SValuePtr &	c,
		BaseSemantics::SValuePtr &	carry_out
	)

overridevirtual

Add two values of equal size and a carry bit.

Carry information is returned via carry_out argument. The carry_out value is the tick marks that are written above the first addend when doing long arithmetic like a 2nd grader would do (of course, they'd probably be adding two base-10 numbers). For instance, when adding 00110110 and 11100100:

 '''..'..         <-- carry tick marks: '=carry .=no carry
  00110110
+ 11100100
----------
 100011010

The carry_out value is 11100100.

The width of a and b must be equal; c must have a width of one bit; the return value and carry_out will be the same width as a and b. The carry_out value is allocated herein.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ negate()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::negate ( const BaseSemantics::SValuePtr & a )

overridevirtual

Two's complement.

The return value will have the same width as the operand.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ signedDivide()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::signedDivide	(	const BaseSemantics::SValuePtr &	dividend,
		const BaseSemantics::SValuePtr &	divisor
	)

overridevirtual

Divides two signed values.

The width of the result will be the same as the width of the dividend.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ signedModulo()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::signedModulo	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	b
	)

overridevirtual

Calculates modulo with signed values.

The width of the result will be the same as the width of operand b.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ signedMultiply()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::signedMultiply	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	b
	)

overridevirtual

Multiplies two signed values.

The width of the result will be the sum of the widths of a and b.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ unsignedDivide()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::unsignedDivide	(	const BaseSemantics::SValuePtr &	dividend,
		const BaseSemantics::SValuePtr &	divisor
	)

overridevirtual

Divides two unsigned values.

The width of the result is the same as the width of the dividend.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ unsignedModulo()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::unsignedModulo	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	b
	)

overridevirtual

Calculates modulo with unsigned values.

The width of the result is the same as the width of operand b.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ unsignedMultiply()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::unsignedMultiply	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	b
	)

overridevirtual

Multiply two unsigned values.

The width of the result is the sum of the widths of a and b.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpFromInteger()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpFromInteger	(	const BaseSemantics::SValuePtr &	intValue,
		SgAsmFloatType *	fpType
	)

overridevirtual

Construct a floating-point value from an integer value.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpToInteger()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpToInteger	(	const BaseSemantics::SValuePtr &	fpValue,
		SgAsmFloatType *	fpType,
		const BaseSemantics::SValuePtr &	dflt
	)

overridevirtual

Construct an integer value from a floating-point value.

The bits of fpValue are interpreted according to the fpType and converted to a signed integer value that fits in integerWidth bits. This is done by truncating the fractional part of the floating point number, thus rounding toward zero. If fpValue is not a number then dflt is returned.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpConvert()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpConvert	(	const BaseSemantics::SValuePtr &	a,
		SgAsmFloatType *	aType,
		SgAsmFloatType *	retType
	)

overridevirtual

Convert from one floating-point type to another.

Converts the floating-point value a having type aType to the return value having retType.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpIsNan()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpIsNan	(	const BaseSemantics::SValuePtr &	fpValue,
		SgAsmFloatType *	fpType
	)

overridevirtual

Whether a floating-point value is a special not-a-number bit pattern.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpIsDenormalized()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpIsDenormalized	(	const BaseSemantics::SValuePtr &	fpValue,
		SgAsmFloatType *	fpType
	)

overridevirtual

Whether a floating-point value is denormalized.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpIsZero()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpIsZero	(	const BaseSemantics::SValuePtr &	fpValue,
		SgAsmFloatType *	fpType
	)

overridevirtual

Whether a floating-point value is equal to zero.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpIsInfinity()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpIsInfinity	(	const BaseSemantics::SValuePtr &	fpValue,
		SgAsmFloatType *	fpType
	)

overridevirtual

Whether a floating-point value is infinity.

Returns true if the floating point value is plus or minus infinity. Querying the sign bit will return the sign of the infinity.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpSign()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpSign	(	const BaseSemantics::SValuePtr &	fpValue,
		SgAsmFloatType *	fpType
	)

overridevirtual

Sign of floating-point value.

Returns the value of the floating-point sign bit.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpEffectiveExponent()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpEffectiveExponent	(	const BaseSemantics::SValuePtr &	fpValue,
		SgAsmFloatType *	fpType
	)

overridevirtual

Exponent of floating-point value.

Returns the exponent of the floating point value. For normalized values this returns the stored exponent minus the exponent bias. For denormalized numbers this returns the stored exponent minus the exponent bias minus an additional amount to normalize the significand.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpAdd()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpAdd	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	b,
		SgAsmFloatType *	fpType
	)

overridevirtual

Add two floating-point values.

Adds two floating-point values that have the same type and returns the sum in the same type.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpSubtract()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpSubtract	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	b,
		SgAsmFloatType *	fpType
	)

overridevirtual

Subtract one floating-point value from another.

Subtracts b from a and returns the difference. All three floating-point values have the same type. The default implementation is in terms of negate and add.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpMultiply()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpMultiply	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	b,
		SgAsmFloatType *	fpType
	)

overridevirtual

Multiply two floating-point values.

Multiplies two floating-point values and returns the product. All three values have the same type.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpDivide()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpDivide	(	const BaseSemantics::SValuePtr &	a,
		const BaseSemantics::SValuePtr &	b,
		SgAsmFloatType *	fpType
	)

overridevirtual

Divide one floating-point value by another.

Computes a divided by b and returns the result. All three floating-point values have the same type.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpSquareRoot()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpSquareRoot	(	const BaseSemantics::SValuePtr &	a,
		SgAsmFloatType *	fpType
	)

overridevirtual

Square root.

Computes and returns the square root of the specified floating-point value. Both values have the same type.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ fpRoundTowardZero()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::fpRoundTowardZero	(	const BaseSemantics::SValuePtr &	a,
		SgAsmFloatType *	fpType
	)

overridevirtual

Round toward zero.

Truncate the fractional part of the floating point number.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ reinterpret()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::reinterpret	(	const BaseSemantics::SValuePtr &	a,
		SgAsmType *	retType
	)

overridevirtual

Reinterpret an expression as a different type.

For semantic domains whose values don't carry type information this is a no-op. For other domains, this creates a new value having the same bits as the original value but a new type. The old and new types must be the same size. This is similar to a C++ reinterpret_cast.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

◆ readRegister()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::readRegister	(	RegisterDescriptor	reg,
		const BaseSemantics::SValuePtr &	dflt
	)

overridevirtual

Reads a value from a register.

The base implementation simply delegates to the current semantic State, which probably delegates to a register state, but subclasses are welcome to override this behavior at any level.

A register state will typically implement storage for hardware registers, but higher layers (the State, RiscOperators, Dispatcher, ...) should not be concerned about the size of the register they're trying to read. For example, a register state for a 32-bit x86 architecture will likely have a storage location for the 32-bit EAX register, but it should be possible to ask readRegister to return the value of AX (the low-order 16-bits). In order to accomplish this, some level of the readRegister delegations needs to invoke extract to obtain the low 16 bits. The RiscOperators object is passed along the delegation path for this purpose. The inverse concat operation will be needed at some level when we ask readRegister to return a value that comes from multiple storage locations in the register state (such as can happen if an x86 register state holds individual status flags and we ask for the 32-bit EFLAGS register).

If the register state can distinguish between a register that has never been accessed and a register that has only been read, then the dflt value is stored into the register the first time it's read. This ensures that reading the register a second time with no intervening write will return the same value as the first read. If a dflt is not provided then one is constructed by invoking undefined_.

There needs to be a certain level of cooperation between the RiscOperators, State, and register state classes to decide which layer should invoke the extract or concat (or whatever other RISC operations might be necessary).

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

Reimplemented in Rose::BinaryAnalysis::InstructionSemantics::DataFlowSemantics::RiscOperators.

◆ peekRegister()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::peekRegister	(	RegisterDescriptor	,
		const BaseSemantics::SValuePtr &	dflt
	)

overridevirtual

Obtain a register value without side effects.

This is a lower-level operation than readRegister in that it doesn't cause the register to be marked as having been read. It is typically used in situations where the register is being accessed for analysis purposes rather than as part of an instruction emulation.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

Reimplemented in Rose::BinaryAnalysis::InstructionSemantics::DataFlowSemantics::RiscOperators.

◆ writeRegister()

virtual void Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::writeRegister	(	RegisterDescriptor	reg,
		const BaseSemantics::SValuePtr &	a
	)

overridevirtual

Writes a value to a register.

The base implementation simply delegates to the current semantic State, which probably delegates to a register state, but subclasses are welcome to override this behavior at any level.

As with readRegister, writeRegister may need to perform various RISC operations in order to accomplish the task of writing a value to the specified register when the underlying register state doesn't actually store a value for that specific register. The RiscOperations object is passed along for that purpose. See readRegister for more details.

Reimplemented from Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

Reimplemented in Rose::BinaryAnalysis::InstructionSemantics::DataFlowSemantics::RiscOperators.

◆ readMemory()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::readMemory	(	RegisterDescriptor	segreg,
		const BaseSemantics::SValuePtr &	addr,
		const BaseSemantics::SValuePtr &	dflt,
		const BaseSemantics::SValuePtr &	cond
	)

overridevirtual

Reads a value from memory.

The implementation (in subclasses) will typically delegate much of the work to the current state's readMemory method.

A MemoryState will implement storage for memory locations and might impose certain restrictions, such as "all memory values must be eight bits". However, the readMemory should not have these constraints so that it can be called from a variety of Dispatcher subclass (e.g., the DispatcherX86 class assumes that readMemory is capable of reading 32-bit values from little-endian memory). The designers of the MemoryState, State, and RiscOperators should collaborate to decide which layer (RiscOperators, State, or MemoryState) is reponsible for combining individual memory locations into larger values. A RiscOperators object is passed along the chain of delegations for this purpose. The RiscOperators might also contain other data that's important during the process, such as an SMT solver.

The segreg argument is an optional segment register. Most architectures have a flat virtual address space and will pass a default-constructed register descriptor whose is_valid() method returns false.

The cond argument is a Boolean value that indicates whether this is a true read operation. If cond can be proven to be false then the read is a no-op and returns an arbitrary value.

The dflt argument determines the size of the value to be read. This argument is also passed along to the lower layers so that they can, if they desire, use it to initialize memory that has never been read or written before.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

Reimplemented in Rose::BinaryAnalysis::InstructionSemantics::DataFlowSemantics::RiscOperators.

◆ peekMemory()

virtual BaseSemantics::SValuePtr Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::peekMemory	(	RegisterDescriptor	segreg,
		const BaseSemantics::SValuePtr &	addr,
		const BaseSemantics::SValuePtr &	dflt
	)

overridevirtual

Read memory without side effects.

This is a lower-level operation than readMemory in that it doesn't cause any side effects in the memory state. In all other respects, it's similar to readMemory.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

Reimplemented in Rose::BinaryAnalysis::InstructionSemantics::DataFlowSemantics::RiscOperators.

◆ writeMemory()

virtual void Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::writeMemory	(	RegisterDescriptor	segreg,
		const BaseSemantics::SValuePtr &	addr,
		const BaseSemantics::SValuePtr &	data,
		const BaseSemantics::SValuePtr &	cond
	)

overridevirtual

Writes a value to memory.

The implementation (in subclasses) will typically delegate much of the work to the current state's writeMemory method.

The segreg argument is an optional segment register. Most architectures have a flat virtual address space and will pass a default-constructed register descriptor whose is_valid() method returns false.

The cond argument is a Boolean value that indicates whether this is a true write operation. If cond can be proved to be false then writeMemory is a no-op.

Implements Rose::BinaryAnalysis::InstructionSemantics::BaseSemantics::RiscOperators.

Reimplemented in Rose::BinaryAnalysis::InstructionSemantics::DataFlowSemantics::RiscOperators.

Member Data Documentation

◆ subdomains

Subdomains Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::subdomains

protected

Definition at line 244 of file MultiSemantics.h.

◆ active

std::vector<bool> Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::active

protected

Definition at line 245 of file MultiSemantics.h.

◆ formatter

Formatter Rose::BinaryAnalysis::InstructionSemantics::MultiSemantics::RiscOperators::formatter

protected

Definition at line 246 of file MultiSemantics.h.

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

MultiSemantics.h

Description

Classes

Public Types

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Member Typedef Documentation

◆ Super

◆ Ptr

◆ Subdomains

Constructor & Destructor Documentation

◆ ~RiscOperators()

Member Function Documentation

◆ instanceFromRegisters()

◆ create() [1/2]

◆ create() [2/2]

◆ add_subdomain()

◆ get_formatter()

◆ get_subdomain()

◆ is_active()

◆ clear_active()

◆ set_active()

◆ before()

◆ after()

◆ svalue_empty()

◆ print()

◆ startInstruction()

◆ finishInstruction()

◆ undefined_()

◆ unspecified_()

◆ number_()

◆ boolean_()

◆ bottom_()

◆ filterCallTarget()

◆ filterReturnTarget()

◆ filterIndirectJumpTarget()

◆ and_()

◆ or_()

◆ xor_()

◆ invert()

◆ extract()

◆ concat()

◆ leastSignificantSetBit()

◆ mostSignificantSetBit()

◆ rotateLeft()

◆ rotateRight()

◆ shiftLeft()

◆ shiftRight()

◆ shiftRightArithmetic()

◆ equalToZero()

◆ iteWithStatus()

◆ unsignedExtend()

◆ signExtend()

◆ add()

◆ addWithCarries()

◆ negate()

◆ signedDivide()

◆ signedModulo()

◆ signedMultiply()

◆ unsignedDivide()

◆ unsignedModulo()

◆ unsignedMultiply()

◆ fpFromInteger()

◆ fpToInteger()

◆ fpConvert()

◆ fpIsNan()

◆ fpIsDenormalized()

◆ fpIsZero()

◆ fpIsInfinity()

◆ fpSign()

◆ fpEffectiveExponent()

◆ fpAdd()

◆ fpSubtract()

◆ fpMultiply()

◆ fpDivide()

◆ fpSquareRoot()

◆ fpRoundTowardZero()

◆ reinterpret()