decompiler  1.0.0
Public Member Functions | List of all members
UniqueSpace Class Reference

The pool of temporary storage registers. More...

#include <space.hh>

Inheritance diagram for UniqueSpace:
AddrSpace

Public Member Functions

 UniqueSpace (AddrSpaceManager *m, const Translate *t, const string &nm, int4 ind, uint4 fl)
 Constructor. More...
 
 UniqueSpace (AddrSpaceManager *m, const Translate *t)
 For use with restoreXml.
 
virtual void saveXml (ostream &s) const
 Write the details of this space as XML. More...
 
- Public Member Functions inherited from AddrSpace
 AddrSpace (AddrSpaceManager *m, const Translate *t, spacetype tp, const string &nm, uint4 size, uint4 ws, int4 ind, uint4 fl, int4 dl)
 
 AddrSpace (AddrSpaceManager *m, const Translate *t, spacetype tp)
 For use with restoreXml. More...
 
virtual ~AddrSpace (void)
 The address space destructor.
 
const string & getName (void) const
 Get the name. More...
 
AddrSpaceManagergetManager (void) const
 Get the space manager. More...
 
const TranslategetTrans (void) const
 Get the processor translator. More...
 
spacetype getType (void) const
 Get the type of space. More...
 
int4 getDelay (void) const
 Get number of heritage passes being delayed. More...
 
int4 getDeadcodeDelay (void) const
 Get number of passes before deadcode removal is allowed. More...
 
int4 getIndex (void) const
 Get the integer identifier. More...
 
uint4 getWordSize (void) const
 Get the addressable unit size. More...
 
uint4 getAddrSize (void) const
 Get the size of the space. More...
 
uintb getHighest (void) const
 Get the highest byte-scaled address. More...
 
uintb getPointerLowerBound (void) const
 Get lower bound for assuming an offset is a pointer. More...
 
uintb getPointerUpperBound (void) const
 Get upper bound for assuming an offset is a pointer. More...
 
int4 getMinimumPtrSize (void) const
 Get the minimum pointer size for this space. More...
 
uintb wrapOffset (uintb off) const
 Wrap -off- to the offset that fits into this space. More...
 
char getShortcut (void) const
 Get the shortcut character. More...
 
bool isHeritaged (void) const
 Return true if dataflow has been traced. More...
 
bool doesDeadcode (void) const
 Return true if dead code analysis should be done on this space. More...
 
bool hasPhysical (void) const
 Return true if data is physically stored in this. More...
 
bool isBigEndian (void) const
 Return true if values in this space are big endian. More...
 
bool isReverseJustified (void) const
 Return true if alignment justification does not match endianness. More...
 
bool isOverlay (void) const
 Return true if this is an overlay space.
 
bool isOverlayBase (void) const
 Return true if other spaces overlay this space.
 
bool isOtherSpace (void) const
 Return true if this is the other address space.
 
bool isTruncated (void) const
 Return true if this space is truncated from its original size. More...
 
bool hasNearPointers (void) const
 Return true if near (truncated) pointers into this space are possible.
 
void printOffset (ostream &s, uintb offset) const
 Write an address offset to a stream. More...
 
virtual int4 numSpacebase (void) const
 Number of base registers associated with this space. More...
 
virtual const VarnodeDatagetSpacebase (int4 i) const
 Get a base register that creates this virtual space. More...
 
virtual const VarnodeDatagetSpacebaseFull (int4 i) const
 Return original spacebase register before truncation. More...
 
virtual bool stackGrowsNegative (void) const
 Return true if a stack in this space grows negative. More...
 
virtual AddrSpacegetContain (void) const
 Return this space's containing space (if any) More...
 
virtual void saveXmlAttributes (ostream &s, uintb offset) const
 Save an address as XML. More...
 
virtual void saveXmlAttributes (ostream &s, uintb offset, int4 size) const
 Save an address and size as XML. More...
 
virtual uintb restoreXmlAttributes (const Element *el, uint4 &size) const
 Recover an offset and size. More...
 
virtual void printRaw (ostream &s, uintb offset) const
 Write an address in this space to a stream. More...
 
virtual uintb read (const string &s, int4 &size) const
 Read in an address (and possible size) from a string. More...
 
virtual void restoreXml (const Element *el)
 Recover the details of this space from XML. More...
 

Additional Inherited Members

- Public Types inherited from AddrSpace
enum  {
  big_endian = 1, heritaged = 2, does_deadcode = 4, programspecific = 8,
  reverse_justification = 16, overlay = 32, overlaybase = 64, truncated = 128,
  hasphysical = 256, is_otherspace = 512, has_nearpointers = 0x400
}
 
enum  { constant_space_index = 0, other_space_index = 1 }
 
- Static Public Member Functions inherited from AddrSpace
static uintb addressToByte (uintb val, uint4 ws)
 Scale from addressable units to byte units. More...
 
static uintb byteToAddress (uintb val, uint4 ws)
 Scale from byte units to addressable units. More...
 
static int4 addressToByteInt (int4 val, uint4 ws)
 Scale int4 from addressable units to byte units. More...
 
static int4 byteToAddressInt (int4 val, uint4 ws)
 Scale int4 from byte units to addressable units. More...
 
static bool compareByIndex (const AddrSpace *a, const AddrSpace *b)
 Compare two spaces by their index. More...
 
- Protected Member Functions inherited from AddrSpace
void calcScaleMask (void)
 Calculate scale and mask. More...
 
void setFlags (uint4 fl)
 Set a cached attribute. More...
 
void clearFlags (uint4 fl)
 Clear a cached attribute. More...
 
void saveBasicAttributes (ostream &s) const
 Write the XML attributes of this space. More...
 
void truncateSpace (uint4 newsize)
 
- Protected Attributes inherited from AddrSpace
string name
 Name of this space.
 
uint4 addressSize
 Size of an address into this space in bytes.
 
uint4 wordsize
 Size of unit being addressed (1=byte)
 
int4 minimumPointerSize
 Smallest size of a pointer into this space (in bytes)
 
int4 index
 An integer identifier for the space.
 
int4 delay
 Delay in heritaging this space.
 
int4 deadcodedelay
 Delay before deadcode removal is allowed on this space.
 

Detailed Description

The pool of temporary storage registers.

It is convenient both for modelling processor instructions in an RTL and for later transforming of the RTL to have a pool of temporary registers that can hold data but that aren't a formal part of the state of the processor. The UniqueSpace provides a specific location for this pool. The analysis engine always creates exactly one of these spaces named unique.

Constructor & Destructor Documentation

UniqueSpace::UniqueSpace ( AddrSpaceManager m,
const Translate t,
const string &  nm,
int4  ind,
uint4  fl 
)

Constructor.

This is the constructor for the unique space, which is automatically constructed by the analysis engine, and constructed only once. The name should always be unique.

Parameters
mis the associated address space manager
tis the associated processor translator
nmis the name of the space
indis the integer identifier
flare attribute flags (currently unused)

References AddrSpace::hasphysical, and AddrSpace::setFlags().

Member Function Documentation

void UniqueSpace::saveXml ( ostream &  s) const
virtual

Write the details of this space as XML.

Write a tag fully describing the details of this space suitable for later recovery via restoreXml.

Parameters
sis the stream being written

Reimplemented from AddrSpace.

References AddrSpace::saveBasicAttributes().


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