gov.nasa.jpf.jvm.bytecode

Class GETSTATIC

java.lang.Object

gov.nasa.jpf.vm.Instruction

gov.nasa.jpf.vm.bytecode.FieldInstruction

gov.nasa.jpf.vm.bytecode.StaticFieldInstruction

gov.nasa.jpf.jvm.bytecode.JVMStaticFieldInstruction

gov.nasa.jpf.jvm.bytecode.GETSTATIC

All Implemented Interfaces:

JVMFieldInstruction, JVMInstruction, Attributable, InstructionInterface, ReadInstruction, ReadOrWriteInstruction, java.lang.Cloneable

public class GETSTATIC
extends JVMStaticFieldInstruction
implements ReadInstruction

Get static fieldInfo from class ..., => ..., value

Field Summary

Fields inherited from class gov.nasa.jpf.vm.bytecode.FieldInstruction

className, fi, fname, ftype, isReferenceField, lastValue, size, varId

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

attr, insnIndex, mi, position

Constructor Summary

Constructors

Constructor and Description
GETSTATIC(java.lang.String fieldName, java.lang.String clsDescriptor, java.lang.String fieldDescriptor)

Method Summary

Modifier and Type	Method and Description
void	accept(JVMInstructionVisitor 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.
int	getByteCode()
int	getLength() return the length in bytes of this instruction.
boolean	isMonitorEnterPrologue() is this instruction part of a monitorenter code pattern
boolean	isRead()

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

typeSafeClone

Methods inherited from class gov.nasa.jpf.vm.bytecode.StaticFieldInstruction

getClassInfo, getElementInfo, getFieldInfo, getLastClassInfo, getLastClassName, getLastElementInfo, initialize, peekElementInfo, toPostExecString

Methods inherited from class gov.nasa.jpf.vm.bytecode.FieldInstruction

getClassName, getFieldName, getFieldSize, getId, getLastValue, getVariableId, isReferenceField, setField, toString

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

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface gov.nasa.jpf.vm.bytecode.ReadOrWriteInstruction

getElementInfo

Methods inherited from interface gov.nasa.jpf.vm.bytecode.InstructionInterface

asInstruction, getFileLocation, getFilePos, getInstructionIndex, getLineNumber, getMethodInfo, getMnemonic, getNext, getNext, getPosition, getPrev, getSourceLine, getSourceLocation, isBackJump, isCompleted, isExtendedInstruction, isFirstInstruction, toPostExecString

Methods inherited from interface gov.nasa.jpf.util.Attributable

addAttr, attrIterator, attrIterator, getAttr, getAttr, getNextAttr, hasAttr, hasAttr, removeAttr, replaceAttr, setAttr

Methods inherited from interface gov.nasa.jpf.jvm.bytecode.JVMFieldInstruction

getFieldInfo, getFieldName, getLastValue, isReferenceField, peekElementInfo

Constructor Detail

GETSTATIC

public GETSTATIC(java.lang.String fieldName,
                 java.lang.String clsDescriptor,
                 java.lang.String fieldDescriptor)

Method Detail

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 interface InstructionInterface

Specified by:

execute in class Instruction

isMonitorEnterPrologue

public boolean isMonitorEnterPrologue()

Description copied from class: Instruction

is this instruction part of a monitorenter code pattern

Overrides:

isMonitorEnterPrologue in class FieldInstruction

getLength

public int getLength()

Description copied from class: Instruction

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

Specified by:

getLength in interface InstructionInterface

Overrides:

getLength in class Instruction

getByteCode

public int getByteCode()

Specified by:

getByteCode in interface InstructionInterface

isRead

public boolean isRead()

Specified by:

isRead in interface ReadOrWriteInstruction

Specified by:

isRead in class FieldInstruction

accept

public void accept(JVMInstructionVisitor insVisitor)

Specified by:

accept in interface JVMInstruction

Overrides:

accept in class JVMStaticFieldInstruction