VolatileOp Class Reference

A base class for operations that access volatile memory. More...

#include <userop.hh>

Inheritance diagram for VolatileOp:

Public Member Functions
	VolatileOp (Architecture *g, const string &nm, int4 ind)
	Constructor.
Public Member Functions inherited from UserPcodeOp
	UserPcodeOp (Architecture *g, const string &nm, int4 ind)
	Construct from name and index.
const string &	getName (void) const
	Get the low-level name of the p-code op.
int4	getIndex (void) const
	Get the constant id of the op.
virtual	~UserPcodeOp (void)
	Destructor.
virtual string	getOperatorName (const PcodeOp *op) const
	Get the symbol representing this operation in decompiled code. More...
virtual void	restoreXml (const Element *el)=0
	Restore the detailed description from an XML stream. More...

Static Protected Member Functions
static string	appendSize (const string &base, int4 size)
	Append a suffix to a string encoding a specific size. More...

Additional Inherited Members
Protected Attributes inherited from UserPcodeOp
string	name
	Low-level name of p-code operator.
int4	useropindex
	Index passed in the CALLOTHER op.
Architecture *	glb
	Architecture owning the user defined op.

Detailed Description

A base class for operations that access volatile memory.

The decompiler models volatile memory by converting any direct read or write of the memory to a function that accesses the memory. This class and its derived classes model such functions. Within the p-code control-flow, dedicated user defined ops serve as a placeholder for the (possibly unknown) effects of modifying/accessing the memory and prevent accidental constant propagation.

Member Function Documentation

appendSize()

string VolatileOp::appendSize ( const string &  base, int4  size  )

staticprotected

Append a suffix to a string encoding a specific size.

This allows a single user defined operator to have multiple symbol names based on the size of its operands in context.

Parameters

base	is the string to append the suffix to
size	is the size to encode expressed as the number of bytes

Returns

the appended string

Referenced by VolatileReadOp::getOperatorName(), and VolatileWriteOp::getOperatorName().

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

• userop.hh
• userop.cc