gov.nasa.jpf.jvm.bytecode

Class PUTSTATIC

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.PUTSTATIC

All Implemented Interfaces:

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

public class PUTSTATIC
extends JVMStaticFieldInstruction
implements WriteInstruction

Set static field in 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
PUTSTATIC(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.
int	getValueSlot(StackFrame frame) where do we get the value from? NOTE: only makes sense in a executeInstruction() context
boolean	isRead()
protected void	popOperands(StackFrame frame)

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, isMonitorEnterPrologue, 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.WriteInstruction

getFieldInfo

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

PUTSTATIC

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

Method Detail

getValueSlot

public int getValueSlot(StackFrame frame)

where do we get the value from? NOTE: only makes sense in a executeInstruction() context

Specified by:

getValueSlot in interface WriteInstruction

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

popOperands

protected void popOperands(StackFrame frame)

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