PcodeEmitCache Class Reference

P-code emitter that dumps its raw Varnodes and PcodeOps to an in memory cache. More...

#include <emulate.hh>

Inheritance diagram for PcodeEmitCache:

Public Member Functions
	PcodeEmitCache (vector< PcodeOpRaw * > &ocache, vector< VarnodeData * > &vcache, const vector< OpBehavior * > &in, uintb uniqReserve)
	Constructor. More...
virtual void	dump (const Address &addr, OpCode opc, VarnodeData *outvar, VarnodeData *vars, int4 isize)
	The main pcode emit method. More...
Public Member Functions inherited from PcodeEmit
virtual	~PcodeEmit (void)
	Virtual destructor.
void	restoreXmlOp (const Element *el, const AddrSpaceManager *trans)
	Emit pcode directly from an XML tag. More...
const uint1 *	restorePackedOp (const Address &addr, const uint1 *ptr, const AddrSpaceManager *trans)
	Emit pcode directly from a packed byte stream. More...

Private Member Functions
VarnodeData *	createVarnode (const VarnodeData *var)
	Clone and cache a raw VarnodeData. More...

Private Attributes
vector< PcodeOpRaw * > &	opcache
	The cache of current p-code ops.
vector< VarnodeData * > &	varcache
	The cache of current varnodes.
const vector< OpBehavior * > &	inst
	Array of behaviors for translating OpCode.
uintm	uniq
	Starting offset for defining temporaries in unique space.

Additional Inherited Members
Public Types inherited from PcodeEmit
enum	{   unimpl_tag = 0x20, inst_tag = 0x21, op_tag = 0x22, void_tag = 0x23,   spaceid_tag = 0x24, addrsz_tag = 0x25, end_tag = 0x60 }
Static Public Member Functions inherited from PcodeEmit
static const uint1 *	unpackOffset (const uint1 *ptr, uintb &off)
	Helper function for unpacking an offset from a pcode byte stream. More...
static const uint1 *	unpackVarnodeData (const uint1 *ptr, VarnodeData &v, const AddrSpaceManager *trans)
	Helper function for unpacking a varnode from a pcode byte stream. More...

Detailed Description

P-code emitter that dumps its raw Varnodes and PcodeOps to an in memory cache.

This is used for emulation when full Varnode and PcodeOp objects aren't needed

Constructor & Destructor Documentation

PcodeEmitCache()

PcodeEmitCache::PcodeEmitCache	(	vector< PcodeOpRaw * > &	ocache,
		vector< VarnodeData * > &	vcache,
		const vector< OpBehavior * > &	in,
		uintb	uniqReserve
	)

Constructor.

Provide the emitter with the containers that will hold the cached p-code ops and varnodes.

Parameters

ocache	is the container for cached PcodeOpRaw
vcache	is the container for cached VarnodeData
in	is the map of OpBehavior
uniqReserve	is the starting offset for temporaries in the unique space

References uniq.

Member Function Documentation

createVarnode()

VarnodeData * PcodeEmitCache::createVarnode ( const VarnodeData *  var )

private

Clone and cache a raw VarnodeData.

Create an internal copy of the VarnodeData and cache it.

Parameters

var	is the incoming VarnodeData being dumped

Returns

the cloned VarnodeData

References varcache.

Referenced by dump().

dump()

void PcodeEmitCache::dump ( const Address &  addr, OpCode  opc, VarnodeData *  outvar, VarnodeData *  vars, int4  isize  )

virtual

The main pcode emit method.

A single pcode instruction is returned to the application via this method. Particular applications override it to tailor how the operations are used.

Parameters

addr	is the Address of the machine instruction
opc	is the opcode of the particular pcode instruction
outvar	if not null is a pointer to data about the output varnode
vars	is a pointer to an array of VarnodeData for each input varnode
isize	is the number of input varnodes

Implements PcodeEmit.

References PcodeOpRaw::addInput(), createVarnode(), inst, opcache, PcodeOpRaw::setBehavior(), PcodeOpRaw::setOutput(), PcodeOpRaw::setSeqNum(), and uniq.

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

• emulate.hh
• emulate.cc