Module openj9.dtfj

Package com.ibm.dtfj.corereaders.zos.le

Class Dll

java.lang.Object

com.ibm.dtfj.corereaders.zos.le.Dll

public class Dll
extends Object

This class represents a DLL (Dynamically Linked Library).

Constructor Summary

Constructors

Constructor	Description
Dll(long address, AddressSpace space)	Constructs a new Dll given the address of the DLCB (DLL Control Block) structure.

Method Summary

Modifier and Type	Method	Description
static void	addFunction(AddressSpace space, String name, DllFunction function)	Add the given DllFunction to the set of functions for this AddressSpace.
static DllFunction	getFunction(AddressSpace space, String name)	From the given AddressSpace returns the named DllFunction (or null if it can't be found).
DllFunction	getFunction(String name)	Returns the named DllFunction (or null if it can't be found).
DllFunction[]	getFunctions()	Returns an array of the DllFunctions belonging to this DLL
long	getLoadAddress()	Returns the load address for this DLL.
String	getName()	Returns the name of this DLL.
Dll	getNext()	Returns the next Dll in the chain (or null if none).
DllVariable	getVariable(String name)	Returns the named DllVariable (or null if it can't be found).
DllVariable[]	getVariables()	Returns an array of the DllVariables belonging to this DLL
long	getWsa()	Returns the address of the WSA (Writable Static Area) for this DLL.

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Dll

public Dll(long address,
 AddressSpace space)

Constructs a new Dll given the address of the DLCB (DLL Control Block) structure. The normal way for a user to get hold of an instance though would be via Edb.getFirstDll().

Method Details

getName

public String getName()
               throws IOException

Returns the name of this DLL.

Throws:

IOException

getLoadAddress

public long getLoadAddress()

Returns the load address for this DLL.

getWsa

public long getWsa()
            throws IOException

Returns the address of the WSA (Writable Static Area) for this DLL.

Throws:

IOException

getNext

public Dll getNext()
            throws IOException

Returns the next Dll in the chain (or null if none).

Throws:

IOException

getVariable

public DllVariable getVariable(String name)
                        throws IOException

Returns the named DllVariable (or null if it can't be found).

Throws:

IOException

getVariables

public DllVariable[] getVariables()
                           throws IOException

Returns an array of the DllVariables belonging to this DLL

Throws:

IOException

getFunction

public DllFunction getFunction(String name)
                        throws IOException

Returns the named DllFunction (or null if it can't be found).

Throws:

IOException

getFunctions

public DllFunction[] getFunctions()
                           throws IOException

Returns an array of the DllFunctions belonging to this DLL

Throws:

IOException

getFunction

public static DllFunction getFunction(AddressSpace space,
 String name)
                               throws IOException

From the given AddressSpace returns the named DllFunction (or null if it can't be found). This caches previously found functions for speed. Note that this searches all the Dlls and returns the first match it finds so take care if multiple Dlls declare the same name!

Parameters:

space - the AddressSpace to search

name - the name of the required function

Throws:

IOException

addFunction

public static void addFunction(AddressSpace space,
 String name,
 DllFunction function)

Add the given DllFunction to the set of functions for this AddressSpace. This can be used to add fake entries, eg see

invalid reference

com.ibm.dtfj.corereaders.zos.le.FunctionEmulator#recordCalledFunctions