TransformOp Class Reference

Placeholder node for PcodeOp that will exist after a transform is applied to a function. More...

#include <transform.hh>

Public Types
enum	{ op_replacement = 1, op_preexisting = 2, indirect_creation = 4, indirect_creation_possible_out = 8 }
	Special annotations on new pcode ops. More...

Public Member Functions
TransformVar *	getOut (void) const
	Get the output placeholder variable for this operator.
TransformVar *	getIn (int4 i) const
	Get the i-th input placeholder variable for this.

Private Member Functions
void	createReplacement (Funcdata *fd)
	Create the new/modified op this placeholder represents. More...
bool	attemptInsertion (Funcdata *fd)
	Try to put the new PcodeOp into its basic block. More...

Private Attributes
PcodeOp *	op
	Original op which this is splitting (or null)
PcodeOp *	replacement
	The new replacement op.
OpCode	opc
	Opcode of the new op.
uint4	special
	Special handling code when creating.
TransformVar *	output
	Varnode output.
vector< TransformVar * >	input
	Varnode inputs.
TransformOp *	follow
	The following op after this (if not null)

Friends
class	TransformManager
class	TransformVar

Detailed Description

Placeholder node for PcodeOp that will exist after a transform is applied to a function.

Member Enumeration Documentation

anonymous enum

Special annotations on new pcode ops.

Enumerator
op_replacement	Op replaces an existing op.
op_preexisting	Op already exists (but will be transformed)
indirect_creation	Mark op as indirect creation.
indirect_creation_possible_out	Mark op as indirect creation and possible call output.

Member Function Documentation

bool TransformOp::attemptInsertion ( Funcdata *  fd )

private

Try to put the new PcodeOp into its basic block.

Parameters

fd	is the function into which the PcodeOp will be inserted

Returns

true if the op is successfully inserted or already inserted

References CPUI_MULTIEQUAL, Funcdata::opInsertBefore(), and Funcdata::opInsertBegin().

void TransformOp::createReplacement ( Funcdata *  fd )

private

Create the new/modified op this placeholder represents.

Create a new PcodeOp or modify an existing one so that it matches this placeholder description. Go ahead an insert the new PcodeOp into the basic block if possible

Parameters

fd	is the function in which to make the modifications

References CPUI_MULTIEQUAL, Funcdata::newOp(), op_preexisting, Funcdata::opInsertBefore(), Funcdata::opInsertBegin(), Funcdata::opInsertInput(), Funcdata::opRemoveInput(), Funcdata::opSetOpcode(), and Funcdata::opUnsetInput().

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The documentation for this class was generated from the following files:

• transform.hh
• transform.cc