gov.nasa.jpf.jvm.bytecode

Class ALOAD

java.lang.Object

gov.nasa.jpf.vm.Instruction

gov.nasa.jpf.jvm.JVMInstruction

gov.nasa.jpf.jvm.bytecode.LocalVariableInstruction

gov.nasa.jpf.jvm.bytecode.ALOAD

All Implemented Interfaces:

InstructionVisitorAcceptor, VariableAccessor, Cloneable

public class ALOAD
extends LocalVariableInstruction

Load reference from local variable ... => ..., objectref

Field Summary

Fields inherited from class gov.nasa.jpf.jvm.bytecode.LocalVariableInstruction

index, lv

Fields inherited from class gov.nasa.jpf.vm.Instruction

attr, insnIndex, mi, position

Constructor Summary

Constructors

Constructor and Description
ALOAD(int index)

Method Summary

Methods

Modifier and Type	Method and Description
void	accept(InstructionVisitor insVisitor)
Instruction	execute(ThreadInfo ti) this is the real workhorse returns next instruction to enter in this thread <2do> it's unfortunate we roll every side effect into this method, because it diminishes the value of the 'executeInstruction' notification: all insns that require some sort of late binding (InvokeVirtual, GetField, ..) are not yet fully analyzable (e.g.
String	getBaseMnemonic()
int	getByteCode()
int	getLength() return the length in bytes of this instruction.
void	setIndex(int index) for explicit construction

Methods inherited from class gov.nasa.jpf.jvm.bytecode.LocalVariableInstruction

getLocalVariableIndex, getLocalVariableName, getLocalVariableType, getLocalVarInfo, getMnemonic, getVariableId, toString

Methods inherited from class gov.nasa.jpf.vm.Instruction

addAttr, attrIterator, attrIterator, cleanupTransients, getAttr, getAttr, getFileLocation, getFilePos, getInstructionIndex, getLineNumber, getMethodInfo, getNext, getNext, getNextAttr, getPosition, getPrev, getSourceLine, getSourceLocation, getSourceOrLocation, hasAttr, hasAttr, init, isBackJump, isCompleted, isExtendedInstruction, isFirstInstruction, isSchedulingRelevant, removeAttr, replaceAttr, requiresClinitExecution, setAttr, setContext, setLocation, setMethodInfo, typeSafeClone

Methods inherited from class java.lang.Object

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

Constructor Detail

ALOAD

public ALOAD(int index)

Method Detail

setIndex

public void setIndex(int index)

for explicit construction

execute

public Instruction execute(ThreadInfo ti)

Description copied from class: Instruction

this is the real workhorse returns next instruction to enter in this thread <2do> it's unfortunate we roll every side effect into this method, because it diminishes the value of the 'executeInstruction' notification: all insns that require some sort of late binding (InvokeVirtual, GetField, ..) are not yet fully analyzable (e.g. the callee of InvokeVirtuals is not known yet), putting the burden of duplicating the related code of enter() in the listener. It would be better if we factor this 'prepareExecution' out of enter()

Specified by:

execute in class Instruction

getLength

public int getLength()

Description copied from class: Instruction

return the length in bytes of this instruction. override if this is not 1

Overrides:

getLength in class Instruction

getByteCode

public int getByteCode()

Specified by:

getByteCode in class Instruction

getBaseMnemonic

public String getBaseMnemonic()

Specified by:

getBaseMnemonic in class LocalVariableInstruction

accept

public void accept(InstructionVisitor insVisitor)

Specified by:

accept in interface InstructionVisitorAcceptor

Overrides:

accept in class LocalVariableInstruction