org.jikesrvm.compilers.opt.runtimesupport

Class OptLinker

java.lang.Object

org.jikesrvm.compilers.opt.runtimesupport.OptLinker

public final class OptLinker
extends Object

Routines for dynamic linking and other misc hooks from opt-compiled code to runtime services.

This class is used in the final mir expansion which is done in an architecture-dependent way by the FinalMIRExpansion classes.

See Also:

(transitions from compiled code to resolveDynamicLink), TableBasedDynamicLinker

Constructor Summary

Constructors

Constructor and Description
OptLinker()

Method Summary

Modifier and Type	Method and Description
static Object	new2DArray(int methodId, int dim0, int dim1, int typeId)
static Object	newArrayArray(int methodId, int[] dimensions, int typeId)
static void	resolveDynamicLink(OptCompiledMethod cm, Offset offset) Given an opt compiler info and a machine code offset in that method's instruction array, performs the dynamic linking required by that instruction.

Methods inherited from class java.lang.Object

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

Constructor Detail

OptLinker

public OptLinker()

Method Detail

resolveDynamicLink

public static void resolveDynamicLink(OptCompiledMethod cm,
                                      Offset offset)
                               throws NoClassDefFoundError

Given an opt compiler info and a machine code offset in that method's instruction array, performs the dynamic linking required by that instruction.

We do this by mapping back to the source RVMMethod and bytecode offset, then examining the bytecodes to see what field/method was being referenced, then calling TableBasedDynamicLinker to do the real work.

Parameters:

cm - the opt compiled method

offset - machine code offset

Throws:

NoClassDefFoundError

newArrayArray

public static Object newArrayArray(int methodId,
                                   int[] dimensions,
                                   int typeId)
                            throws NoClassDefFoundError,
                                   NegativeArraySizeException,
                                   OutOfMemoryError

Throws:

NoClassDefFoundError

NegativeArraySizeException

OutOfMemoryError

new2DArray

public static Object new2DArray(int methodId,
                                int dim0,
                                int dim1,
                                int typeId)
                         throws NoClassDefFoundError,
                                NegativeArraySizeException,
                                OutOfMemoryError

Throws:

NoClassDefFoundError

NegativeArraySizeException

OutOfMemoryError