Package ghidra.pcode.emu.jit.var

Class JitMemoryOutVar

java.lang.Object

ghidra.pcode.emu.jit.var.AbstractJitVal

ghidra.pcode.emu.jit.var.AbstractJitVar

ghidra.pcode.emu.jit.var.AbstractJitVarnodeVar

ghidra.pcode.emu.jit.var.AbstractJitOutVar

ghidra.pcode.emu.jit.var.JitMemoryOutVar

All Implemented Interfaces:

JitMemoryVar, JitOutVar, JitVal, JitVar, JitVarnodeVar

public class JitMemoryOutVar
extends AbstractJitOutVar
implements JitMemoryVar

A p-code variable node with a fixed location in memory and a defining p-code op.

This represents an output operand located in memory. It can be addressed directly. In contrast to JitLocalOutVar, these may not be used by downstream p-code ops in the use-def graph, because the output is written to the state immediately. There's no benefit to further analysis. Instead, ops that use the same varnode will take a JitDirectMemoryVar, which indicate input immediately from the state.

See Also:

• JitDirectMemoryVar

Nested Class Summary

Nested classes/interfaces inherited from interface ghidra.pcode.emu.jit.var.JitVal

JitVal.ValUse

Field Summary

Fields inherited from class ghidra.pcode.emu.jit.var.AbstractJitVarnodeVar

varnode

Fields inherited from class ghidra.pcode.emu.jit.var.AbstractJitVar

id

Fields inherited from class ghidra.pcode.emu.jit.var.AbstractJitVal

size, uses

Constructor Summary

Constructors

Constructor	Description
JitMemoryOutVar(int id, Varnode varnode)	Construct a variable.

Method Summary

Modifier and Type	Method	Description
void	addUse(JitOp op, int position)	Add a use.

Methods inherited from class ghidra.pcode.emu.jit.var.AbstractJitOutVar

definition, setDefinition

Methods inherited from class ghidra.pcode.emu.jit.var.AbstractJitVarnodeVar

space, toString, varnode

Methods inherited from class ghidra.pcode.emu.jit.var.AbstractJitVar

id

Methods inherited from class ghidra.pcode.emu.jit.var.AbstractJitVal

removeUse, size, uses

Methods inherited from class java.lang.Object

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

Methods inherited from interface ghidra.pcode.emu.jit.var.JitVal

removeUse, uses

Methods inherited from interface ghidra.pcode.emu.jit.var.JitVar

id, space

Methods inherited from interface ghidra.pcode.emu.jit.var.JitVarnodeVar

size, varnode

Constructor Details

JitMemoryOutVar

public JitMemoryOutVar(int id,
 Varnode varnode)

Construct a variable.

Parameters:

id - the unique id

varnode - the varnode

See Also:

• JitDataFlowModel.generateOutVar(Varnode)

Method Details

addUse

public void addUse(JitOp op,
 int position)

Description copied from interface: JitVal

Add a use.

In most cases, uses should be final, once this value node has been entered into the use-def graph. An exception deals with phi nodes, as this analysis occurs after each intra-block portion of the graph has been constructed. During inter-block analysis, additional uses will get recorded. Even further uses may be recorded uding op-use analysis, since it may generate more phi nodes.

Specified by:

addUse in interface JitVal

Overrides:

addUse in class AbstractJitVal

Parameters:

op - the operator node using this one

position - the position of this value in the operator's input operands