Ghidra Decompiler Analysis Engine
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PcodeEmitCache Class Reference

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

#include <emulate.hh>

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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
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...
 

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
ocacheis the container for cached PcodeOpRaw
vcacheis the container for cached VarnodeData
inis the map of OpBehavior
uniqReserveis the starting offset for temporaries in the unique space

Member Function Documentation

◆ 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
addris the Address of the machine instruction
opcis the opcode of the particular pcode instruction
outvarif not null is a pointer to data about the output varnode
varsis a pointer to an array of VarnodeData for each input varnode
isizeis the number of input varnodes

Implements PcodeEmit.


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