org.jikesrvm.ia32

Class MultianewarrayHelper

java.lang.Object

org.jikesrvm.ia32.MultianewarrayHelper

public abstract class MultianewarrayHelper
extends Object

Helper routine to pull the parameters to multianewarray off the Java expression stack maintained by the baseline compiler and pass them to RuntimeEntrypoints.buildMultiDimensionalArray.

TODO: There is only 1 line of platform dependent code here; refactor?

Constructor Summary

Constructors

Constructor and Description
MultianewarrayHelper()

Method Summary

Modifier and Type	Method and Description
(package private) static Object	newArrayArray(int methodId, int numDimensions, int typeId, int argOffset) Allocate something like {@code new Foo[cnt0][cnt1]...

Methods inherited from class java.lang.Object

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

Constructor Detail

MultianewarrayHelper

public MultianewarrayHelper()

Method Detail

newArrayArray

static Object newArrayArray(int methodId,
                            int numDimensions,
                            int typeId,
                            int argOffset)
                     throws NoClassDefFoundError,
                            NegativeArraySizeException,
                            OutOfMemoryError

Allocate something like new Foo[cnt0][cnt1]...[cntN-1], or new int[cnt0][cnt1]...[cntN-1].

Parameters:

methodId - method id of caller

numDimensions - number of array dimensions

typeId - type id of type reference for array

argOffset - position of word *above* `cnt0' argument within caller's frame This is used to access the number of elements to be allocated for each dimension. See also: bytecode 0xc5 ("multianewarray") in BaselineCompilerImpl

Returns:

newly allocated multidimensional array

Throws:

NoClassDefFoundError

NegativeArraySizeException

OutOfMemoryError