Package ghidra.pcode.emu.jit.gen.var

Interface SubMemoryVarGen<V extends JitVarnodeVar>

Type Parameters:

V - the class of p-code variable node in the use-def graph

All Superinterfaces:

MemoryVarGen<V>, ValGen<V>, VarGen<V>

All Known Implementing Classes:

SubDirectMemoryVarGen, SubMemoryOutVarGen

public interface SubMemoryVarGen<V extends JitVarnodeVar>
extends MemoryVarGen<V>

A generator for a subpiece of a memory variable

Nested Class Summary

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

VarGen.BlockTransition<THIS extends JitCompiledPassage>

Method Summary

Modifier and Type	Method	Description
int	byteOffset()	Returns .
default Varnode	getVarnode(JitCodeGenerator<?> gen, V v)	Get the varnode actually accessed for the given p-code variable
int	maxByteSize()	Returns the size of the subpiece.
default ValGen<V>	subpiece(int byteOffset, int maxByteSize)	Create a generator for a PcodeOp.SUBPIECE of a value.

Methods inherited from interface ghidra.pcode.emu.jit.gen.var.MemoryVarGen

genReadLegToStack, genReadToArray, genReadToBool, genReadToOpnd, genReadToStack, genValInit

Methods inherited from interface ghidra.pcode.emu.jit.gen.var.VarGen

genWriteFromArray, genWriteFromOpnd, genWriteFromStack

Method Details

byteOffset

int byteOffset()

Returns . the number of bytes to the right of the subpiece

Returns:

maxByteSize

int maxByteSize()

Returns the size of the subpiece.

Returns:

the size of the subpiece

getVarnode

default Varnode getVarnode(JitCodeGenerator<?> gen,
 V v)

Description copied from interface: MemoryVarGen

Get the varnode actually accessed for the given p-code variable

This is made to be overridden for the implementation of subpiece access.

Specified by:

getVarnode in interface MemoryVarGen<V extends JitVarnodeVar>

Parameters:

gen - the code generator

v - the value

Returns:

the varnode

subpiece

default ValGen<V> subpiece(int byteOffset,
 int maxByteSize)

Description copied from interface: ValGen

Create a generator for a PcodeOp.SUBPIECE of a value.

Specified by:

subpiece in interface ValGen<V extends JitVarnodeVar>

Parameters:

byteOffset - the number of least-significant bytes to remove

maxByteSize - the maximum size of the resulting variable. In general, a subpiece should never exceed the size of the parent varnode, but if it does, this will truncate that excess.

Returns:

the resulting subpiece generator