VarnodeData Struct Reference

Data defining a specific memory location. More...

#include <pcoderaw.hh>

Public Member Functions
bool	operator< (const VarnodeData &op2) const
	An ordering for VarnodeData. More...
bool	operator== (const VarnodeData &op2) const
	Compare for equality. More...
bool	operator!= (const VarnodeData &op2) const
	Compare for inequality. More...
Address	getAddr (void) const
	Get the location of the varnode as an address. More...
void	restoreXml (const Element *el, const AddrSpaceManager *manage)
	Recover this object from an XML tag. More...
bool	contains (const VarnodeData &op2) const
	Does this container another given VarnodeData. More...

Public Attributes
AddrSpace *	space
	The address space.
uintb	offset
	The offset within the space.
uint4	size
	The number of bytes in the location.

Detailed Description

Data defining a specific memory location.

Within the decompiler's model of a processor, any register, memory location, or other variable can always be represented as an address space, an offset within the space, and the size of the sequence of bytes. This is more commonly referred to as a Varnode, but this is a bare-bones container for the data that doesn't have the cached attributes and the dataflow links of the Varnode within its syntax tree.

Member Function Documentation

bool VarnodeData::contains

(

const VarnodeData &

op2

)

const

Does this container another given VarnodeData.

Return true, if this, as an address range, contains the other address range

Parameters

op2	is the other VarnodeData to test for containment

Returns

true if this contains the other

References offset, size, and space.

Address VarnodeData::getAddr ( void  ) const

inline

Get the location of the varnode as an address.

This is a convenience function to construct a full Address from the VarnodeData's address space and offset

Returns

the address of the varnode

References offset, and space.

Referenced by ActionUnjustifiedParams::apply(), AddrSpaceManager::constructFloatExtensionAddress(), AddrSpaceManager::constructJoinAddress(), EmulatePcodeCache::executeBranch(), ActionPrototypeTypes::extendInput(), ActionFuncLink::funcLinkOutput(), and ParamEntry::justifiedContain().

bool VarnodeData::operator!= ( const VarnodeData &  op2 ) const

inline

Compare for inequality.

Compare VarnodeData for inequality. If either the space, offset, or size is not equal, return true.

Parameters

op2	is the object being compared to

Returns

true if this is not equal to op2

References offset, size, and space.

bool VarnodeData::operator< ( const VarnodeData &  op2 ) const

inline

An ordering for VarnodeData.

VarnodeData can be sorted in terms of the space its in (the space's index), the offset within the space, and finally by the size.

Parameters

op2	is the object being compared to

Returns

true if this is less than op2

References AddrSpace::getIndex(), offset, size, and space.

bool VarnodeData::operator== ( const VarnodeData &  op2 ) const

inline

Compare for equality.

Compare VarnodeData for equality. The space, offset, and size must all be exactly equal

Parameters

op2	is the object being compared to

Returns

true if this is equal to op2

References offset, size, and space.

void VarnodeData::restoreXml	(	const Element *	el,
		const AddrSpaceManager *	manage
	)

Recover this object from an XML tag.

Build this VarnodeData from an <addr> tag

Parameters

el	is the parsed tag
manage	is the address space manager

References Element::getAttributeName(), Element::getAttributeValue(), AddrSpaceManager::getDefaultCodeSpace(), Element::getNumAttributes(), Translate::getRegister(), AddrSpaceManager::getSpaceByName(), AddrSpace::getTrans(), offset, AddrSpace::restoreXmlAttributes(), size, and space.

Referenced by Architecture::parseIncidentalCopy(), Architecture::parsePreferSplit(), Address::restoreXml(), LanedRegister::restoreXml(), and PcodeEmit::restoreXmlOp().

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

• pcoderaw.hh
• pcoderaw.cc