ghidra::TraverseNode Struct Reference

Node for a forward traversal of a Varnode expression. More...

#include <varnode.hh>

Public Types
enum	{   actionalt = 1, indirect = 2, indirectalt = 4, lsb_truncated = 8,   concat_high = 0x10 }

Public Member Functions
	TraverseNode (const Varnode *v, uint4 f)
	Constructor.

Static Public Member Functions
static bool	isAlternatePathValid (const Varnode *vn, uint4 flags)
	Return true if the alternate path looks more valid than the main path. More...

Public Attributes
const Varnode *	vn
	Varnode at the point of traversal.
uint4	flags
	Flags associated with the node.

Detailed Description

Node for a forward traversal of a Varnode expression.

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
actionalt	Alternate path traverses a solid action or non-incidental COPY.
indirect	Main path traverses an INDIRECT.
indirectalt	Alternate path traverses an INDIRECT.
lsb_truncated	Least significant byte(s) of original value have been truncated.
concat_high	Original value has been concatented as most significant portion.

Member Function Documentation

isAlternatePathValid()

bool ghidra::TraverseNode::isAlternatePathValid ( const Varnode *  vn, uint4  flags  )

static

Return true if the alternate path looks more valid than the main path.

Two different paths from a common Varnode each terminate at a CALL, CALLIND, or RETURN. Evaluate which path most likely represents actual parameter/return value passing, based on traversal information about each path.

Parameters

vn	is the Varnode terminating the alternate path
flags	indicates traversals for both paths

Returns

true if the alternate path is preferred

References ghidra::PcodeOp::code(), ghidra::CPUI_SUBPIECE, ghidra::Varnode::getDef(), ghidra::PcodeOp::getIn(), ghidra::Varnode::getOffset(), ghidra::Varnode::getSize(), ghidra::Varnode::isInput(), ghidra::PcodeOp::isMarker(), ghidra::Varnode::isWritten(), and ghidra::Varnode::loneDescend().

Referenced by ghidra::Funcdata::checkCallDoubleUse(), and ghidra::Funcdata::onlyOpUse().

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

• varnode.hh
• varnode.cc