ghidra::ExprTree Class Reference

A p-code expression tree. More...

#include <pcodecompile.hh>

Public Member Functions
	ExprTree (void)
	Construct an empty expression.
	ExprTree (VarnodeTpl *vn)
	Construct an expression with a single VarnodeTpl. More...
	~ExprTree (void)
	Destructor.
void	setOutput (VarnodeTpl *newout)
	Force the output of the expression to be a new VarnodeTpl. More...
VarnodeTpl *	getOut (void)
	Get the root VarnodeTpl.
const ConstTpl &	getSize (void) const
	Get the size of the root VarnodeTpl.

Static Public Member Functions
static vector< OpTpl * > *	appendParams (OpTpl *op, vector< ExprTree * > *param)
	Create a new raw expression by appending an array of VarnodeTpl, as inputs, to a new root OpTpl. More...
static vector< OpTpl * > *	toVector (ExprTree *expr)
	Convert an expression to a raw array of OpTpl. More...

Private Attributes
vector< OpTpl * > *	ops
	Flattened ops making up the expression.
VarnodeTpl *	outvn
	Root VarnodeTpl: Copy of the output from the final OpTpl (or NULL)

Friends
class	PcodeCompile

Detailed Description

A p-code expression tree.

A single connected tree of OpTpl and VarnodeTpl nodes, with either a root VarnodeTpl or a root OpTpl with no output. The OpTpl are stored in the flattened order the will be emitted as.

Constructor & Destructor Documentation

ExprTree()

ghidra::ExprTree::ExprTree

(

VarnodeTpl *

vn

)

Construct an expression with a single VarnodeTpl.

Parameters

vn	is the expression root

References ops, and outvn.

Member Function Documentation

appendParams()

vector< OpTpl * > * ghidra::ExprTree::appendParams ( OpTpl *  op, vector< ExprTree * > *  param  )

static

Create a new raw expression by appending an array of VarnodeTpl, as inputs, to a new root OpTpl.

The OpTpl may already have inputs. The root VarnodeTpl from each ExprTree passed in is appended to the list of input parameters of the OpTpl, creating a single new expression. The original ExprTrees and their container are all destroyed. The new expression is returned, in raw form, as a flattened array of OpTpl.

Parameters

op	is the new root OpTpl
param	is the list of expressions, each with a root VarnodeTpl

Returns

the new raw expression as an array of OpTpl

References ghidra::OpTpl::addInput(), and outvn.

Referenced by ghidra::SleighCompile::createMacroUse(), ghidra::PcodeCompile::createUserOpNoOut(), and ghidra::PcodeCompile::createVariadic().

setOutput()

void ghidra::ExprTree::setOutput

(

VarnodeTpl *

newout

)

Force the output of the expression to be a new VarnodeTpl.

Parameters

newout

is the new output being forced

References ghidra::OpTpl::addInput(), ghidra::OpTpl::clearOutput(), ghidra::CPUI_COPY, ghidra::VarnodeTpl::isUnnamed(), ops, outvn, and ghidra::OpTpl::setOutput().

Referenced by ghidra::PcodeCompile::newOutput().

toVector()

vector< OpTpl * > * ghidra::ExprTree::toVector ( ExprTree *  expr )

static

Convert an expression to a raw array of OpTpl.

The flattened array of OpTpl is stripped from the ExprTree, which is then destroyed.

Parameters

expr	is the expression to convert to an array

Returns

the raw array of OpTpl

References ops.

Referenced by ghidra::PcodeCompile::newOutput().

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

• pcodecompile.hh
• pcodecompile.cc