Package ghidra.pcode.emu.jit.gen.access

Interface AccessGen<JT extends JitType>

Type Parameters:

JT - the JIT type of the operand

All Known Subinterfaces:

ExportsLegAccessGen, MpAccessGen, SimpleAccessGen<T,JT>

All Known Implementing Classes:

DoubleAccessGen, FloatAccessGen, IntAccessGen, LongAccessGen, MpIntAccessGen

public interface AccessGen<JT extends JitType>

A generator to emit code that accesses variables of various size in a state, for a specific type and byte order.

This is used by variable birthing and retirement as well as direct memory accesses. Dynamic memory accesses, i.e., store and load do not use this, though they may borrow some portions.

Method Summary

Static Methods

Modifier and Type	Method	Description
static <THIS extends JitCompiledPassage, N extends Emitter.Next> Emitter<Emitter.Ent<N,Types.TInt>>	genReadToBool(Emitter<N> em, Local<Types.TRef<THIS>> localThis, JitCodeGenerator<THIS> gen, Varnode vn)	Emit bytecode to read the given varnode onto the stack as a p-code bool (JVM int)
static <T extends JitType> AccessGen<T>	lookup(Endian endian, T type)	Lookup the generator for accessing variables for the given type and byte order
static MpIntAccessGen	lookupMp(Endian endian)	Lookup the generator for accessing variables of multi-precision integer type and the given byte order
static <T extends Types.BPrim<?>, JT extends JitType.SimpleJitType<T, JT>> SimpleAccessGen<T,JT>	lookupSimple(Endian endian, JT type)	Lookup the generator for accessing variables of simple types and the given byte order

Method Details

lookup

static <T extends JitType> AccessGen<T> lookup(Endian endian,
 T type)

Lookup the generator for accessing variables for the given type and byte order

Parameters:

endian - the byte order

type - the p-code type of the variable

Returns:

the access generator

lookupSimple

static <T extends Types.BPrim<?>,
JT extends JitType.SimpleJitType<T,
JT>>
SimpleAccessGen<T,JT> lookupSimple(Endian endian,
 JT type)

Lookup the generator for accessing variables of simple types and the given byte order

Type Parameters:

T - the JVM type of the variable

JT - the p-code type of the variable

Parameters:

endian - the byte order

type - the p-code type of the variable

Returns:

the access generator

lookupMp

static MpIntAccessGen lookupMp(Endian endian)

Lookup the generator for accessing variables of multi-precision integer type and the given byte order

Parameters:

endian - the byte order

Returns:

the access generator

genReadToBool

static <THIS extends JitCompiledPassage,
N extends Emitter.Next>
Emitter<Emitter.Ent<N,Types.TInt>> genReadToBool(Emitter<N> em,
 Local<Types.TRef<THIS>> localThis,
 JitCodeGenerator<THIS> gen,
 Varnode vn)

Emit bytecode to read the given varnode onto the stack as a p-code bool (JVM int)

Type Parameters:

THIS - the type of the generated passage

N - the incoming stack

Parameters:

em - the emitter typed with the incoming stack

localThis - a handle to the local holding the this reference

gen - the code generator

vn - the varnode

Returns:

the emitter typed with the resulting stack, i.e., having pushed the value