Package ghidra.program.model.block

Class CodeBlockImpl

java.lang.Object

ghidra.program.model.block.CodeBlockImpl

All Implemented Interfaces:

AddressSetView, CodeBlock, Iterable<AddressRange>

public class CodeBlockImpl
extends Object
implements CodeBlock

CodeBlockImpl is an implementation of a CodeBlock. These are produced by a particular CodeBlockModel and are associated with only that model. Most methods simply delegate any work that is specific to a particular CodeBlockModel to that model.

See Also:

• CodeBlock

Constructor Summary

Constructors

Constructor	Description
CodeBlockImpl(CodeBlockModel model, Address[] starts, AddressSetView body)	Construct a multi-entry CodeBlock associated with a CodeBlockModel.

Method Summary

Modifier and Type	Method	Description
boolean	contains(Address a)	Test if the address is contained within this set.
boolean	contains(Address start, Address end)	Test if the given address range is contained in this set.
boolean	contains(AddressSetView rangeSet)	Test if the given address set is a subset of this set.
boolean	equals(Object obj)
Address	findFirstAddressInCommon(AddressSetView otherSet)	Finds the first address in this collection that is also in the given addressSet.
AddressIterator	getAddresses(boolean forward)	Returns an iterator over all addresses in this set.
AddressIterator	getAddresses(Address start, boolean forward)	Returns an iterator over the addresses in this address set starting at the start address
AddressRangeIterator	getAddressRanges()
AddressRangeIterator	getAddressRanges(boolean startAtFront)	Returns an iterator over the ranges in the specified order
AddressRangeIterator	getAddressRanges(Address start, boolean forward)	Returns an iterator of address ranges starting with the range that contains the given address.
CodeBlockReferenceIterator	getDestinations(TaskMonitor monitor)	Get an Iterator over the CodeBlocks that are flowed to from this CodeBlock.
AddressRange	getFirstRange()	Returns the first range in this set or null if the set is empty;
Address	getFirstStartAddress()	Return the first start address of the CodeBlock.
FlowType	getFlowType()	Return, in theory, how things flow out of this node.
AddressRange	getLastRange()	Returns the last range in this set or null if the set is empty;
Address	getMaxAddress()	Get the maximum address for this address set.
Address	getMinAddress()	Get the minimum address for this address set.
CodeBlockModel	getModel()	Get the model instance which was used to generate this block.
String	getName()	Return the name of the block.
long	getNumAddresses()
int	getNumAddressRanges()
int	getNumDestinations(TaskMonitor monitor)	Get the number of CodeBlocks this block flows to.
int	getNumSources(TaskMonitor monitor)	Get the number of CodeBlocks that flow into this CodeBlock.
AddressRange	getRangeContaining(Address address)	Returns the range that contains the given address
CodeBlockReferenceIterator	getSources(TaskMonitor monitor)	Get an Iterator over the CodeBlocks that flow into this CodeBlock.
Address[]	getStartAddresses()	Get all the entry points to this block.
int	hashCode()
boolean	hasSameAddresses(AddressSetView view)	Returns true if the given address set contains the same set of addresses as this set.
AddressSet	intersect(AddressSetView view)	Computes the intersection of this address set with the given address set.
AddressSet	intersectRange(Address start, Address end)	Computes the intersection of this address set with the given address range.
boolean	intersects(Address start, Address end)	Determine if the start and end range intersects with the specified address set.
boolean	intersects(AddressSetView addrSet)	Determine if this address set intersects with the specified address set.
boolean	isEmpty()
Iterator<AddressRange>	iterator()	Returns an iterator over the address ranges in this address set.
Iterator<AddressRange>	iterator(boolean forward)	Returns an iterator over the ranges in the specified order
Iterator<AddressRange>	iterator(Address start, boolean forward)	Returns an iterator of address ranges starting with the range that contains the given address.
AddressSet	subtract(AddressSetView addrSet)	Computes the difference of this address set with the given address set (this - set).
String	toString()
AddressSet	union(AddressSetView addrSet)	Computes the union of this address set with the given address set.
AddressSet	xor(AddressSetView addrSet)	Computes the exclusive-or of this address set with the given set.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface ghidra.program.model.address.AddressSetView

getAddressCountBefore

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Details

CodeBlockImpl

public CodeBlockImpl(CodeBlockModel model,
 Address[] starts,
 AddressSetView body)

Construct a multi-entry CodeBlock associated with a CodeBlockModel. The significance of the start Addresses is model dependent.

Parameters:

model - the model instance which produced this block.

starts - the entry points for the block. Any of these addresses may be used to identify this block within the model that produced it.

body - the address set which makes-up the body of this block.

Method Details

getFirstStartAddress

public Address getFirstStartAddress()

Description copied from interface: CodeBlock

Return the first start address of the CodeBlock. Depending on the model used to generate the CodeBlock, there may be multiple entry points to the block. This will return the first start address for the block. It should always return the same address for a given block if there is more than one entry point.

Specified by:

getFirstStartAddress in interface CodeBlock

Returns:

the first start address of the block.

See Also:

• CodeBlock.getFirstStartAddress()

getStartAddresses

public Address[] getStartAddresses()

Description copied from interface: CodeBlock

Get all the entry points to this block. Depending on the model, there may be more than one entry point. Entry points will be returned in natural sorted order.

Specified by:

getStartAddresses in interface CodeBlock

Returns:

an array of entry points to this block. a zero length array if there are no entry points.

See Also:

• CodeBlock.getStartAddresses()

getName

public String getName()

Description copied from interface: CodeBlock

Return the name of the block.

Specified by:

getName in interface CodeBlock

Returns:

name of block, normally the symbol at the starting address

See Also:

• CodeBlock.getName()

getFlowType

public FlowType getFlowType()

Description copied from interface: CodeBlock

Return, in theory, how things flow out of this node. If there are any abnormal ways to flow out of this node, (ie: jump, call, etc...) then the flow type of the node takes on that type. If there are multiple unique ways out of the node, then we should return FlowType.UNKNOWN. Fallthrough is returned if that is the only way out.

Specified by:

getFlowType in interface CodeBlock

Returns:

flow type of this node

See Also:

• CodeBlock.getFlowType()

getNumSources

public int getNumSources(TaskMonitor monitor)
                  throws CancelledException

Description copied from interface: CodeBlock

Get the number of CodeBlocks that flow into this CodeBlock. Note that this is almost as much work as getting the actual source references.

Specified by:

getNumSources in interface CodeBlock

Parameters:

monitor - task monitor which allows user to cancel operation.

Returns:

number of source CodeBlocks.

Throws:

CancelledException - if the monitor cancels the operation.

See Also:

• CodeBlock.getNumSources(ghidra.util.task.TaskMonitor)

getSources

public CodeBlockReferenceIterator getSources(TaskMonitor monitor)
                                      throws CancelledException

Description copied from interface: CodeBlock

Get an Iterator over the CodeBlocks that flow into this CodeBlock.

Specified by:

getSources in interface CodeBlock

Parameters:

monitor - task monitor which allows user to cancel operation.

Returns:

An iterator over CodeBlocks referencing this Block.

Throws:

CancelledException - if the monitor cancels the operation.

See Also:

• CodeBlock.getSources(ghidra.util.task.TaskMonitor)

getNumDestinations

public int getNumDestinations(TaskMonitor monitor)
                       throws CancelledException

Description copied from interface: CodeBlock

Get the number of CodeBlocks this block flows to. Note that this is almost as much work as getting the actual destination references.

Specified by:

getNumDestinations in interface CodeBlock

Parameters:

monitor - task monitor which allows user to cancel operation.

Returns:

number of destination CodeBlocks.

Throws:

CancelledException - if the monitor cancels the operation.

See Also:

• CodeBlock.getNumDestinations(ghidra.util.task.TaskMonitor)

getDestinations

public CodeBlockReferenceIterator getDestinations(TaskMonitor monitor)
                                           throws CancelledException

Description copied from interface: CodeBlock

Get an Iterator over the CodeBlocks that are flowed to from this CodeBlock.

Specified by:

getDestinations in interface CodeBlock

Parameters:

monitor - task monitor which allows user to cancel operation.

Returns:

An iterator over CodeBlocks referred to by this Block.

Throws:

CancelledException - if the monitor cancels the operation.

See Also:

• CodeBlock.getDestinations(ghidra.util.task.TaskMonitor)

getModel

public CodeBlockModel getModel()

Description copied from interface: CodeBlock

Get the model instance which was used to generate this block.

Specified by:

getModel in interface CodeBlock

Returns:

the model used to build this CodeBlock

See Also:

• CodeBlock.getModel()

toString

public String toString()

Overrides:

toString in class Object

See Also:

• Object.toString()

contains

public boolean contains(Address a)

Description copied from interface: AddressSetView

Test if the address is contained within this set.

Specified by:

contains in interface AddressSetView

Parameters:

a - address to test.

Returns:

true if addr exists in the set, false otherwise.

See Also:

• AddressSetView.contains(ghidra.program.model.address.Address)

contains

public boolean contains(Address start,
 Address end)

Description copied from interface: AddressSetView

Test if the given address range is contained in this set. The specified start and end addresses must form a valid range within a single AddressSpace.

Specified by:

contains in interface AddressSetView

Parameters:

start - the first address in the range.

end - the last address in the range.

Returns:

true if entire range is contained within the set, false otherwise.

See Also:

• AddressSetView.contains(ghidra.program.model.address.Address, ghidra.program.model.address.Address)

contains

public boolean contains(AddressSetView rangeSet)

Description copied from interface: AddressSetView

Test if the given address set is a subset of this set.

Specified by:

contains in interface AddressSetView

Parameters:

rangeSet - the set to test.

Returns:

true if the entire set is contained within this set, false otherwise.

See Also:

• AddressSetView.contains(ghidra.program.model.address.AddressSetView)

intersects

public boolean intersects(Address start,
 Address end)

Description copied from interface: AddressSetView

Determine if the start and end range intersects with the specified address set. The specified start and end addresses must form a valid range within a single AddressSpace.

Specified by:

intersects in interface AddressSetView

Parameters:

start - start of range

end - end of range

Returns:

true if the given range intersects this address set.

See Also:

• AddressSetView.intersects(ghidra.program.model.address.Address, ghidra.program.model.address.Address)

intersects

public boolean intersects(AddressSetView addrSet)

Description copied from interface: AddressSetView

Determine if this address set intersects with the specified address set.

Specified by:

intersects in interface AddressSetView

Parameters:

addrSet - address set to check intersection with.

Returns:

true if this set intersects the specified addrSet else false

See Also:

• AddressSetView.intersects(ghidra.program.model.address.AddressSetView)

intersect

public AddressSet intersect(AddressSetView view)

Description copied from interface: AddressSetView

Computes the intersection of this address set with the given address set. This method does not modify this address set.

Specified by:

intersect in interface AddressSetView

Parameters:

view - the address set to intersect with.

Returns:

AddressSet a new address set that contains all addresses that are contained in both this set and the given set.

See Also:

• AddressSetView.intersect(ghidra.program.model.address.AddressSetView)

intersectRange

public AddressSet intersectRange(Address start,
 Address end)

Description copied from interface: AddressSetView

Computes the intersection of this address set with the given address range. This method does not modify this address set. The specified start and end addresses must form a valid range within a single AddressSpace.

Specified by:

intersectRange in interface AddressSetView

Parameters:

start - start of range

end - end of range

Returns:

AddressSet a new address set that contains all addresses that are contained in both this set and the given range.

See Also:

• AddressSetView.intersectRange(ghidra.program.model.address.Address, ghidra.program.model.address.Address)

union

public AddressSet union(AddressSetView addrSet)

Description copied from interface: AddressSetView

Computes the union of this address set with the given address set. This method does not change this address set.

Specified by:

union in interface AddressSetView

Parameters:

addrSet - The address set to be unioned with this address set.

Returns:

AddressSet A new address set which contains all the addresses from both this set and the given set.

See Also:

• AddressSetView.union(ghidra.program.model.address.AddressSetView)

xor

public AddressSet xor(AddressSetView addrSet)

Description copied from interface: AddressSetView

Computes the exclusive-or of this address set with the given set. This method does not modify this address set.

Specified by:

xor in interface AddressSetView

Parameters:

addrSet - address set to exclusive-or with.

Returns:

AddressSet a new address set containing all addresses that are in either this set or the given set, but not in both sets

See Also:

• AddressSetView.xor(ghidra.program.model.address.AddressSetView)

subtract

public AddressSet subtract(AddressSetView addrSet)

Description copied from interface: AddressSetView

Computes the difference of this address set with the given address set (this - set). Note that this is not the same as (set - this). This method does not change this address set.

Specified by:

subtract in interface AddressSetView

Parameters:

addrSet - the set to subtract from this set.

Returns:

AddressSet a new address set which contains all the addresses that are in this set, but not in the given set.

See Also:

• AddressSetView.subtract(ghidra.program.model.address.AddressSetView)

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface AddressSetView

Returns:

true if this set is empty.

See Also:

• AddressSetView.isEmpty()

getMinAddress

public Address getMinAddress()

Description copied from interface: AddressSetView

Get the minimum address for this address set. NOTE: An AddressRange should generally not be formed using this address and AddressSetView.getMaxAddress() since it may span multiple AddressSpaces.

Specified by:

getMinAddress in interface AddressSetView

Returns:

the minimum address for this set. Returns null if the set is empty.

See Also:

• AddressSetView.getMinAddress()

getMaxAddress

public Address getMaxAddress()

Description copied from interface: AddressSetView

Get the maximum address for this address set. NOTE: An AddressRange should generally not be formed using this address and AddressSetView.getMaxAddress() since it may span multiple AddressSpaces.

Specified by:

getMaxAddress in interface AddressSetView

Returns:

the maximum address for this set. Returns null if the set is empty.

See Also:

• AddressSetView.getMaxAddress()

getNumAddressRanges

public int getNumAddressRanges()

Specified by:

getNumAddressRanges in interface AddressSetView

Returns:

the number of address ranges in this set.

See Also:

• AddressSetView.getNumAddressRanges()

getAddressRanges

public AddressRangeIterator getAddressRanges()

Specified by:

getAddressRanges in interface AddressSetView

Returns:

an iterator over the address ranges in this address set.

See Also:

• AddressSetView.getAddressRanges()

iterator

public Iterator<AddressRange> iterator()

Description copied from interface: AddressSetView

Returns an iterator over the address ranges in this address set.

Specified by:

iterator in interface AddressSetView

Specified by:

iterator in interface Iterable<AddressRange>

getNumAddresses

public long getNumAddresses()

Specified by:

getNumAddresses in interface AddressSetView

Returns:

the number of addresses in this set.

See Also:

• AddressSetView.getNumAddresses()

getAddresses

public AddressIterator getAddresses(boolean forward)

Description copied from interface: AddressSetView

Returns an iterator over all addresses in this set.

Specified by:

getAddresses in interface AddressSetView

Parameters:

forward - if true the address are return in increasing order, otherwise in decreasing order.

Returns:

an iterator over all addresses in this set.

See Also:

• AddressSetView.getAddresses(boolean)

getAddresses

public AddressIterator getAddresses(Address start,
 boolean forward)

Description copied from interface: AddressSetView

Returns an iterator over the addresses in this address set starting at the start address

Specified by:

getAddresses in interface AddressSetView

Parameters:

start - address to start iterating at in the address set

forward - if true address are return from lowest to highest, else from highest to lowest

Returns:

an iterator over the addresses in this address set starting at the start address

See Also:

• AddressSetView.getAddresses(ghidra.program.model.address.Address, boolean)

hasSameAddresses

public boolean hasSameAddresses(AddressSetView view)

Description copied from interface: AddressSetView

Returns true if the given address set contains the same set of addresses as this set.

Specified by:

hasSameAddresses in interface AddressSetView

Parameters:

view - the address set to compare.

Returns:

true if the given set contains the same addresses as this set.

See Also:

• AddressSetView.hasSameAddresses(ghidra.program.model.address.AddressSetView)

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

See Also:

• Object.equals(java.lang.Object)

getAddressRanges

public AddressRangeIterator getAddressRanges(boolean startAtFront)

Description copied from interface: AddressSetView

Returns an iterator over the ranges in the specified order

Specified by:

getAddressRanges in interface AddressSetView

Parameters:

startAtFront - the ranges are returned from lowest to highest, otherwise from highest to lowest

Returns:

an iterator over all the addresse ranges in the set.

See Also:

• AddressSetView.getAddressRanges(boolean)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

See Also:

• Object.hashCode()

getAddressRanges

public AddressRangeIterator getAddressRanges(Address start,
 boolean forward)

Description copied from interface: AddressSetView

Returns an iterator of address ranges starting with the range that contains the given address. If there is no range containing the start address, then the the first range will be the next range greater than the start address if going forward, otherwise the range less than the start address

Specified by:

getAddressRanges in interface AddressSetView

Parameters:

start - the address the the first range should contain.

forward - true iterators forward, false backwards

Returns:

the AddressRange iterator

getFirstRange

public AddressRange getFirstRange()

Description copied from interface: AddressSetView

Returns the first range in this set or null if the set is empty;

Specified by:

getFirstRange in interface AddressSetView

Returns:

the first range in this set or null if the set is empty;

getLastRange

public AddressRange getLastRange()

Description copied from interface: AddressSetView

Returns the last range in this set or null if the set is empty;

Specified by:

getLastRange in interface AddressSetView

Returns:

the last range in this set or null if the set is empty;

getRangeContaining

public AddressRange getRangeContaining(Address address)

Description copied from interface: AddressSetView

Returns the range that contains the given address

Specified by:

getRangeContaining in interface AddressSetView

Parameters:

address - the address for which to find a range.

Returns:

the range that contains the given address.

iterator

public Iterator<AddressRange> iterator(boolean forward)

Description copied from interface: AddressSetView

Returns an iterator over the ranges in the specified order

Specified by:

iterator in interface AddressSetView

Parameters:

forward - the ranges are returned from lowest to highest, otherwise from highest to lowest

Returns:

an iterator over all the addresse ranges in the set.

iterator

public Iterator<AddressRange> iterator(Address start,
 boolean forward)

Description copied from interface: AddressSetView

Returns an iterator of address ranges starting with the range that contains the given address. If there is no range containing the start address, then the the first range will be the next range greater than the start address if going forward, otherwise the range less than the start address

Specified by:

iterator in interface AddressSetView

Parameters:

start - the address the the first range should contain.

forward - true iterators forward, false backwards

Returns:

the AddressRange iterator

findFirstAddressInCommon

public Address findFirstAddressInCommon(AddressSetView otherSet)

Description copied from interface: AddressSetView

Finds the first address in this collection that is also in the given addressSet.

Specified by:

findFirstAddressInCommon in interface AddressSetView

Parameters:

otherSet - the addressSet to search for the first (lowest) common address.

Returns:

the first address that is contained in this set and the given set.