Special Datatype object used to describe pointers that index into the symbol table. More...

#include <type.hh>

Inheritance diagram for ghidra::TypeSpacebase:

Public Member Functions
	TypeSpacebase (const TypeSpacebase &op)
	Construct from another TypeSpacebase.

	TypeSpacebase (AddrSpace id, const Address &frame, Architecture g)
	Construct given an address space, scope, and architecture.

Scope *	getMap (void) const
	Get the symbol table indexed by this. More...

Address	getAddress (uintb off, int4 sz, const Address &point) const
	Construct an Address given an offset. More...

virtual Datatype *	getSubType (int8 off, int8 *newoff) const
	Recover component data-type one-level down. More...

virtual Datatype *	nearestArrayedComponentForward (int8 off, int8 newoff, int8 elSize) const

virtual Datatype *	nearestArrayedComponentBackward (int8 off, int8 newoff, int8 elSize) const

virtual int4	compare (const Datatype &op, int4 level) const
	Order types for propagation. More...

virtual int4	compareDependency (const Datatype &op) const
	Compare for storage in tree structure. More...

virtual Datatype *	clone (void) const
	Clone the data-type.

virtual void	encode (Encoder &encoder) const
	Encode the data-type to a stream. More...

Public Member Functions inherited from ghidra::Datatype
	Datatype (const Datatype &op)
	Construct the base data-type copying low-level properties of another.

	Datatype (int4 s, type_metatype m)
	Construct the base data-type providing size and meta-type.

virtual	~Datatype (void)
	Destructor.

bool	isCoreType (void) const
	Is this a core data-type.

bool	isCharPrint (void) const
	Does this print as a 'char'.

bool	isEnumType (void) const
	Is this an enumerated type.

bool	isPowerOfTwo (void) const
	Is this a flag-based enumeration.

bool	isASCII (void) const
	Does this print as an ASCII 'char'.

bool	isUTF16 (void) const
	Does this print as UTF16 'wchar'.

bool	isUTF32 (void) const
	Does this print as UTF32 'wchar'.

bool	isVariableLength (void) const
	Is this a variable length structure.

bool	hasSameVariableBase (const Datatype *ct) const
	Are these the same variable length data-type. More...

bool	isOpaqueString (void) const
	Is this an opaquely encoded string.

bool	isPointerRel (void) const
	Is this a TypePointerRel.

bool	isFormalPointerRel (void) const
	Is this a non-ephemeral TypePointerRel.

bool	hasStripped (void) const
	Return true if this has a stripped form.

bool	isIncomplete (void) const
	Is this an incompletely defined data-type.

bool	needsResolution (void) const
	Is this a union or a pointer to union.

uint4	getInheritable (void) const
	Get properties pointers inherit.

uint4	getDisplayFormat (void) const
	Get the display format for constants with this data-type. More...

type_metatype	getMetatype (void) const
	Get the type meta-type.

sub_metatype	getSubMeta (void) const
	Get the sub-metatype.

uint8	getId (void) const
	Get the type id.

int4	getSize (void) const
	Get the type size.

const string &	getName (void) const
	Get the type name.

const string &	getDisplayName (void) const
	Get string to use in display.

Datatype *	getTypedef (void) const
	Get the data-type immediately typedefed by this (or null)

virtual void	printRaw (ostream &s) const
	Print a description of the type to stream. More...

virtual const TypeField *	findTruncation (int8 off, int4 sz, const PcodeOp *op, int4 slot, int8 &newoff) const
	Find an immediate subfield of this data-type. More...

virtual int4	getHoleSize (int4 off) const
	Get number of bytes at the given offset that are padding.

virtual int4	numDepend (void) const
	Return number of component sub-types.

virtual Datatype *	getDepend (int4 index) const
	Return the i-th component sub-type.

virtual void	printNameBase (ostream &s) const
	Print name as short prefix.

virtual bool	isPtrsubMatching (uintb off) const
	Is this data-type suitable as input to a CPUI_PTRSUB op. More...

virtual Datatype *	getStripped (void) const
	Get a stripped version of this for formal use in formal declarations. More...

virtual Datatype *	resolveInFlow (PcodeOp *op, int4 slot)
	Tailor data-type propagation based on Varnode use. More...

virtual Datatype *	findResolve (const PcodeOp *op, int4 slot)
	Find a previously resolved sub-type. More...

virtual int4	findCompatibleResolve (Datatype *ct) const
	Find a resolution compatible with the given data-type. More...

virtual const TypeField *	resolveTruncation (int8 offset, PcodeOp *op, int4 slot, int8 &newoff)
	Resolve which union field is being used for a given PcodeOp when a truncation is involved. More...

int4	typeOrder (const Datatype &op) const
	Order this with -op- datatype.

int4	typeOrderBool (const Datatype &op) const
	Order this with -op-, treating bool data-type as special. More...

void	encodeRef (Encoder &encoder) const
	Encode a reference of this to a stream. More...

bool	isPieceStructured (void) const
	Does this data-type consist of separate pieces? More...

Private Member Functions
void	decode (Decoder &decoder, TypeFactory &typegrp)
	Restore this spacebase data-type from a stream. More...

Private Attributes
AddrSpace *	spaceid
	The address space we are treating as a structure.

Address	localframe
	Address of function whose symbol table is indexed (or INVALID for "global")

Architecture *	glb
	Architecture for accessing symbol table.

Friends
class	TypeFactory

Additional Inherited Members
Static Public Member Functions inherited from ghidra::Datatype
static uint4	encodeIntegerFormat (const string &val)
	Encode the format attribute from an XML element. More...

static string	decodeIntegerFormat (uint4 val)
	Decode the given format value into an XML attribute string. More...

Protected Types inherited from ghidra::Datatype
enum	{ coretype = 1, chartype = 2, enumtype = 4, poweroftwo = 8, utf16 = 16, utf32 = 32, opaque_string = 64, variable_length = 128, has_stripped = 0x100, is_ptrrel = 0x200, type_incomplete = 0x400, needs_resolution = 0x800, force_format = 0x7000, truncate_bigendian = 0x8000 }
	Boolean properties of datatypes. More...

Protected Member Functions inherited from ghidra::Datatype
void	decodeBasic (Decoder &decoder)
	Recover basic data-type properties. More...

void	encodeBasic (type_metatype meta, Encoder &encoder) const
	Encode basic data-type properties. More...

void	encodeTypedef (Encoder &encoder) const
	Encode this as a typedef element to a stream. More...

void	markComplete (void)
	Mark this data-type as completely defined.

void	setDisplayFormat (uint4 format)
	Set a specific display format. More...

Static Protected Member Functions inherited from ghidra::Datatype
static uint8	hashName (const string &nm)
	Produce a data-type id by hashing the type name. More...

static uint8	hashSize (uint8 id, int4 size)
	Reversibly hash size into id. More...

Protected Attributes inherited from ghidra::Datatype
uint8	id
	A unique id for the type (or 0 if an id is not assigned)

int4	size
	Size (of variable holding a value of this type)

uint4	flags
	Boolean properties of the type.

string	name
	Name of type.

string	displayName
	Name to display in output.

type_metatype	metatype
	Meta-type - type disregarding size.

sub_metatype	submeta
	Sub-type of of the meta-type, for comparisons.

Datatype *	typedefImm
	The immediate data-type being typedefed by this.

Static Protected Attributes inherited from ghidra::Datatype
static sub_metatype	base2sub [15]

Detailed Description

Special Datatype object used to describe pointers that index into the symbol table.

A TypeSpacebase treats a specific AddrSpace as "structure" that will get indexed in to. This facilitates type propagation from local symbols into the stack space and from global symbols into the RAM space.

Member Function Documentation

◆ compare()

int4 ghidra::TypeSpacebase::compare	(	const Datatype &	op,
		int4	level
	)		const

virtual

Order types for propagation.

Order this with another data-type, in a way suitable for the type propagation algorithm. Bigger types come earlier. More specific types come earlier.

Parameters

op	is the data-type to compare with this
level	is maximum level to descend when recursively comparing

Returns: negative, 0, positive depending on ordering of types

Reimplemented from ghidra::Datatype.

References ghidra::TypeCode::compareDependency().

◆ compareDependency()

int4 ghidra::TypeSpacebase::compareDependency ( const Datatype & op ) const

virtual

Compare for storage in tree structure.

Sort data-types for the main TypeFactory container. The sort needs to be based on the data-type structure so that an example data-type, constructed outside the factory, can be used to find the equivalent object inside the factory. This means the comparison should not examine the data-type id. In practice, the comparison only needs to go down one level in the component structure before just comparing component pointers.

Parameters

op	is the data-type to compare with this

Returns: negative, 0, positive depending on ordering of types

Reimplemented from ghidra::Datatype.

References ghidra::Datatype::compareDependency(), localframe, and spaceid.

◆ decode()

void ghidra::TypeSpacebase::decode	(	Decoder &	decoder,
		TypeFactory &	typegrp
	)

private

Restore this spacebase data-type from a stream.

Parse the <type> tag.

Parameters

decoder	is the stream decoder
typegrp	is the factory owning this data-type

References ghidra::Address::decode(), ghidra::Datatype::decodeBasic(), and ghidra::Decoder::readSpace().

Referenced by ghidra::TypeFactory::decodeTypeNoRef().

◆ encode()

void ghidra::TypeSpacebase::encode ( Encoder & encoder ) const

virtual

Encode the data-type to a stream.

Encode a formal description of the data-type as a <type> element. For composite data-types, the description goes down one level, describing the component types only by reference.

Parameters

encoder is the stream encoder

Reimplemented from ghidra::Datatype.

References ghidra::Encoder::closeElement(), ghidra::Datatype::encodeBasic(), ghidra::Datatype::encodeTypedef(), ghidra::Encoder::openElement(), ghidra::Datatype::typedefImm, and ghidra::Encoder::writeSpace().

◆ getAddress()

Address ghidra::TypeSpacebase::getAddress	(	uintb	off,
		int4	sz,
		const Address &	point
	)		const

Construct an Address given an offset.

Return the Address being referred to by a specific offset relative to a pointer with this Datatype

Parameters

off	is the offset relative to the pointer
sz	is the size of offset (as a pointer)
point	is a "context" reference for the request

Returns: the referred to Address

Referenced by ghidra::RulePtrsubCharConstant::applyOp(), ghidra::Funcdata::linkSymbolReference(), ghidra::PrintC::opPtrsub(), and ghidra::ActionInferTypes::propagateSpacebaseRef().

◆ getMap()

Scope * ghidra::TypeSpacebase::getMap ( void ) const

Get the symbol table indexed by this.

This data-type can index either a local or the global scope

Returns: the symbol table Scope

References ghidra::Funcdata::getScopeLocal(), and ghidra::Scope::queryFunction().

Referenced by ghidra::RulePtrsubCharConstant::applyOp(), and ghidra::Funcdata::linkSymbolReference().

◆ getSubType()

Datatype * ghidra::TypeSpacebase::getSubType	(	int8	off,
		int8 *	newoff
	)		const

virtual

Recover component data-type one-level down.

Given an offset into this data-type, return the component data-type at that offset. Also, pass back a "renormalized" offset suitable for recursize getSubType() calls: i.e. if the original offset hits the exact start of the sub-type, 0 is passed back. If there is no valid component data-type at the offset, return NULL and pass back the original offset

Parameters

off	is the offset into this data-type
newoff	is a pointer to the passed-back offset

Returns: a pointer to the component data-type or NULL

Reimplemented from ghidra::Datatype.

References ghidra::AddrSpace::byteToAddress(), ghidra::SymbolEntry::getAddr(), ghidra::Address::getOffset(), ghidra::SymbolEntry::getOffset(), ghidra::SymbolEntry::getSymbol(), ghidra::Symbol::getType(), ghidra::Scope::queryContainer(), and ghidra::TYPE_UNKNOWN.

◆ nearestArrayedComponentBackward()

Datatype * ghidra::TypeSpacebase::nearestArrayedComponentBackward	(	int8	off,
		int8 *	newoff,
		int8 *	elSize
	)		const

virtual

Find the first component data-type before the given offset that is (or contains) an array, and pass back the difference between the component's start and the given offset. Return the component data-type or null if no array is found.

Parameters

off	is the given offset into this data-type
newoff	is used to pass back the offset difference
elSize	is used to pass back the array element size

Returns: the component data-type or null

Reimplemented from ghidra::Datatype.

References ghidra::Datatype::getMetatype(), ghidra::TypeCode::getSubType(), ghidra::Datatype::nearestArrayedComponentBackward(), ghidra::TYPE_ARRAY, and ghidra::TYPE_STRUCT.

◆ nearestArrayedComponentForward()

Datatype * ghidra::TypeSpacebase::nearestArrayedComponentForward	(	int8	off,
		int8 *	newoff,
		int8 *	elSize
	)		const

virtual

Find the first component data-type after the given offset that is (or contains) an array, and pass back the difference between the component's start and the given offset. Return the component data-type or null if no array is found.

Parameters

off	is the given offset into this data-type
newoff	is used to pass back the offset difference
elSize	is used to pass back the array element size

Returns: the component data-type or null

Reimplemented from ghidra::Datatype.

References ghidra::AddrSpace::byteToAddress(), ghidra::AddrSpace::byteToAddressInt(), ghidra::SymbolEntry::getAddr(), ghidra::Datatype::getMetatype(), ghidra::Address::getOffset(), ghidra::SymbolEntry::getOffset(), ghidra::SymbolEntry::getSize(), ghidra::SymbolEntry::getSymbol(), ghidra::Symbol::getType(), ghidra::Datatype::nearestArrayedComponentForward(), ghidra::Scope::queryContainer(), ghidra::TYPE_ARRAY, and ghidra::TYPE_STRUCT.

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

type.hh
type.cc

Public Member Functions

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ compare()

◆ compareDependency()

◆ decode()

◆ encode()

◆ getAddress()

◆ getMap()

◆ getSubType()

◆ nearestArrayedComponentBackward()

◆ nearestArrayedComponentForward()