Package ghidra.pcode.emu.jit.gen.op

Interface FloatOpUnOpGen<T extends JitFloatUnOp>

Type Parameters:

T - the class of p-code op node in the use-def graph

All Superinterfaces:

OpGen<T>, UnOpGen<T>

All Known Implementing Classes:

FloatAbsOpGen, FloatCeilOpGen, FloatFloorOpGen, FloatNegOpGen, FloatRoundOpGen, FloatSqrtOpGen

public interface FloatOpUnOpGen<T extends JitFloatUnOp>
extends UnOpGen<T>

An extension for floating-point unary operators

Nested Class Summary

Nested classes/interfaces inherited from interface ghidra.pcode.emu.jit.gen.op.OpGen

OpGen.DeadOpResult, OpGen.LiveOpResult, OpGen.OpResult

Method Summary

Modifier and Type	Method	Description
default <THIS extends JitCompiledPassage> OpGen.OpResult	genRun(Emitter<Emitter.Bot> em, Local<Types.TRef<THIS>> localThis, Local<Types.TInt> localCtxmod, Methods.RetReq<Types.TRef<JitCompiledPassage.EntryPoint>> retReq, JitCodeGenerator<THIS> gen, T op, JitControlFlowModel.JitBlock block, Scope scope)	Emit bytecode into the run method.
default boolean	isSigned()	Whether this operator is signed
<N1 extends Emitter.Next, N0 extends Emitter.Ent<N1, Types.TDouble>> Emitter<Emitter.Ent<N1,Types.TDouble>>	opForDouble(Emitter<N0> em)	Emit the JVM bytecode to perform the operator with double operands on the stack.
<N1 extends Emitter.Next, N0 extends Emitter.Ent<N1, Types.TFloat>> Emitter<Emitter.Ent<N1,Types.TFloat>>	opForFloat(Emitter<N0> em)	Emit the JVM bytecode to perform the operator with float operands on the stack.

Methods inherited from interface ghidra.pcode.emu.jit.gen.op.UnOpGen

ext

Method Details

isSigned

default boolean isSigned()

Description copied from interface: UnOpGen

Whether this operator is signed

In many cases, the operator itself is not affected by the signedness of the operands; however, if size adjustments to the operands are needed, this can determine how those operands are extended.

Specified by:

isSigned in interface UnOpGen<T extends JitFloatUnOp>

Returns:

true for signed, false if not

opForFloat

<N1 extends Emitter.Next,
N0 extends Emitter.Ent<N1,
Types.TFloat>>
Emitter<Emitter.Ent<N1,Types.TFloat>> opForFloat(Emitter<N0> em)

Emit the JVM bytecode to perform the operator with float operands on the stack.

Type Parameters:

N1 - the tail of the incoming stack

N0 - the incoming stack with the input operand on top

Parameters:

em - the emitter typed with the incoming stack

Returns:

the emitter typed with the resulting stack, i.e., the tail with the result pushed

opForDouble

<N1 extends Emitter.Next,
N0 extends Emitter.Ent<N1,
Types.TDouble>>
Emitter<Emitter.Ent<N1,Types.TDouble>> opForDouble(Emitter<N0> em)

Emit the JVM bytecode to perform the operator with double operands on the stack.

Type Parameters:

N1 - the tail of the incoming stack

N0 - the incoming stack with the input operand on top

Parameters:

em - the emitter typed with the incoming stack

Returns:

the emitter typed with the resulting stack, i.e., the tail with the result pushed

genRun

default <THIS extends JitCompiledPassage>
OpGen.OpResult genRun(Emitter<Emitter.Bot> em,
 Local<Types.TRef<THIS>> localThis,
 Local<Types.TInt> localCtxmod,
 Methods.RetReq<Types.TRef<JitCompiledPassage.EntryPoint>> retReq,
 JitCodeGenerator<THIS> gen,
 T op,
 JitControlFlowModel.JitBlock block,
 Scope scope)

Description copied from interface: OpGen

Emit bytecode into the run method.

This method must emit the code needed to load any input operands, convert them to the appropriate type, perform the actual operation, and then if applicable, store the output operand. The implementations should delegate to JitCodeGenerator.genReadToStack(Emitter, Local, JitVal, ghidra.pcode.emu.jit.analysis.JitType.SimpleJitType, Ext), JitCodeGenerator.genWriteFromStack(Emitter, Local, JitVar, ghidra.pcode.emu.jit.analysis.JitType.SimpleJitType, Ext, Scope) or similar for mp-int types.

Specified by:

genRun in interface OpGen<T extends JitFloatUnOp>

Type Parameters:

THIS - the type of the generated passage

Parameters:

em - the emitter typed with the empty stack

localThis - a handle to the local holding the this reference

localCtxmod - a handle to the local holding ctxmod

retReq - an indication of what must be returned by this JitCompiledPassage.run(int) method.

gen - the code generator

op - the p-code op (use-def node) to translate

block - the basic block containing the p-code op

scope - a scope for generating temporary local storage

Returns:

the result of emitting the p-code op's bytecode