org.jikesrvm.compilers.baseline

Class UnusualMaps

java.lang.Object

org.jikesrvm.compilers.baseline.UnusualMaps

final class UnusualMaps
extends Object

Unusual maps are maps to track references that don't take the usual format.

Currently unusual maps include: maps of locations within JSR subroutines (includes return address map). In the future the return address maps may be expanded to include other internal pointers or internal/external pointers may be handled separately.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) int	nonReferenceMapIndex index into the map table of the non-reference set map
(package private) int	normalMapIndex index into the array of normal maps ie the back-pointer
(package private) int	referenceMapIndex index into the map table of the references set map
(package private) int	returnAddressIndex For maps of JSR subroutine locations index into the normal reference map of where the return address can be located
(package private) int	returnAddressMapIndex index into the map table of the return address map

Constructor Summary

Constructors

Constructor and Description
UnusualMaps()

Method Summary

Modifier and Type	Method and Description
(package private) int	getNonReferenceMapIndex()
(package private) int	getNormalMapIndex()
(package private) int	getReferenceMapIndex()
(package private) int	getReturnAddressIndex()
(package private) int	getReturnAddressMapIndex()
(package private) void	setNonReferenceMapIndex(int index) Sets the offset of the non-reference map in the stackmap list of maps
(package private) void	setNormalMapIndex(int index) Sets the normal map index (i.e. the back-pointer).
(package private) void	setReferenceMapIndex(int index) Sets the offset of the reference map in the stackmap list of maps
(package private) void	setReturnAddressIndex(int index) Sets the index in the stack frame of the return address for this map.
(package private) void	setReturnAddressMapIndex(int index) Sets the offset of the returnAddress map in the stackmap list of maps
void	showInfo()

Methods inherited from class java.lang.Object

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

Field Detail

returnAddressIndex

int returnAddressIndex

For maps of JSR subroutine locations index into the normal reference map of where the return address can be located

referenceMapIndex

int referenceMapIndex

index into the map table of the references set map

nonReferenceMapIndex

int nonReferenceMapIndex

index into the map table of the non-reference set map

returnAddressMapIndex

int returnAddressMapIndex

index into the map table of the return address map

normalMapIndex

int normalMapIndex

index into the array of normal maps ie the back-pointer

Constructor Detail

UnusualMaps

UnusualMaps()

Method Detail

setReturnAddressIndex

void setReturnAddressIndex(int index)

Sets the index in the stack frame of the return address for this map.

Parameters:

index - new index for return address

getReturnAddressIndex

int getReturnAddressIndex()

Returns:

the index in the stack frame of the return address for this map

setReferenceMapIndex

void setReferenceMapIndex(int index)

Sets the offset of the reference map in the stackmap list of maps

Parameters:

index - new index for reference map

getReferenceMapIndex

int getReferenceMapIndex()

Returns:

the index in the stackmaps for the reference map

setNonReferenceMapIndex

void setNonReferenceMapIndex(int index)

Sets the offset of the non-reference map in the stackmap list of maps

Parameters:

index - new index for non-reference map

getNonReferenceMapIndex

int getNonReferenceMapIndex()

Returns:

the index in the stackmaps for the non-reference map

setReturnAddressMapIndex

void setReturnAddressMapIndex(int index)

Sets the offset of the returnAddress map in the stackmap list of maps

Parameters:

index - new index for returnAddress map

getReturnAddressMapIndex

int getReturnAddressMapIndex()

Returns:

the index in the stackmaps for the return Address map

getNormalMapIndex

int getNormalMapIndex()

Returns:

the normal map index ie the back-pointer

setNormalMapIndex

void setNormalMapIndex(int index)

Sets the normal map index (i.e. the back-pointer).

Parameters:

index - new index for normal map

showInfo

public void showInfo()