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/**CFile****************************************************************
FileName [hop.h]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Minimalistic And-Inverter Graph package.]
Synopsis [External declarations.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - May 11, 2006.]
Revision [$Id: hop.h,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
***********************************************************************/
#ifndef __HOP_H__
#define __HOP_H__
#ifdef __cplusplus
extern "C" {
#endif
////////////////////////////////////////////////////////////////////////
/// INCLUDES ///
////////////////////////////////////////////////////////////////////////
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <time.h>
#include "vec.h"
////////////////////////////////////////////////////////////////////////
/// PARAMETERS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// BASIC TYPES ///
////////////////////////////////////////////////////////////////////////
typedef struct Hop_Man_t_ Hop_Man_t;
typedef struct Hop_Obj_t_ Hop_Obj_t;
typedef int Hop_Edge_t;
// object types
typedef enum {
AIG_NONE, // 0: non-existent object
AIG_CONST1, // 1: constant 1
AIG_PI, // 2: primary input
AIG_PO, // 3: primary output
AIG_AND, // 4: AND node
AIG_EXOR, // 5: EXOR node
AIG_VOID // 6: unused object
} Hop_Type_t;
// the AIG node
struct Hop_Obj_t_ // 4 words
{
void * pData; // misc
Hop_Obj_t * pFanin0; // fanin
Hop_Obj_t * pFanin1; // fanin
unsigned long Type : 3; // object type
unsigned long fPhase : 1; // value under 000...0 pattern
unsigned long fMarkA : 1; // multipurpose mask
unsigned long fMarkB : 1; // multipurpose mask
unsigned long nRefs : 26; // reference count (level)
};
// the AIG manager
struct Hop_Man_t_
{
// AIG nodes
Vec_Ptr_t * vPis; // the array of PIs
Vec_Ptr_t * vPos; // the array of POs
Hop_Obj_t * pConst1; // the constant 1 node
Hop_Obj_t Ghost; // the ghost node
// AIG node counters
int nObjs[AIG_VOID];// the number of objects by type
int nCreated; // the number of created objects
int nDeleted; // the number of deleted objects
// stuctural hash table
Hop_Obj_t ** pTable; // structural hash table
int nTableSize; // structural hash table size
// various data members
void * pData; // the temporary data
int nTravIds; // the current traversal ID
int fRefCount; // enables reference counting
int fCatchExor; // enables EXOR nodes
// memory management
Vec_Ptr_t * vChunks; // allocated memory pieces
Vec_Ptr_t * vPages; // memory pages used by nodes
Hop_Obj_t * pListFree; // the list of free nodes
// timing statistics
int time1;
int time2;
};
////////////////////////////////////////////////////////////////////////
/// MACRO DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
#define AIG_MIN(a,b) (((a) < (b))? (a) : (b))
#define AIG_MAX(a,b) (((a) > (b))? (a) : (b))
#ifndef PRT
#define PRT(a,t) printf("%s = ", (a)); printf("%6.2f sec\n", (float)(t)/(float)(CLOCKS_PER_SEC))
#endif
static inline int Hop_BitWordNum( int nBits ) { return (nBits>>5) + ((nBits&31) > 0); }
static inline int Hop_TruthWordNum( int nVars ) { return nVars <= 5 ? 1 : (1 << (nVars - 5)); }
static inline int Hop_InfoHasBit( unsigned * p, int i ) { return (p[(i)>>5] & (1<<((i) & 31))) > 0; }
static inline void Hop_InfoSetBit( unsigned * p, int i ) { p[(i)>>5] |= (1<<((i) & 31)); }
static inline void Hop_InfoXorBit( unsigned * p, int i ) { p[(i)>>5] ^= (1<<((i) & 31)); }
static inline Hop_Obj_t * Hop_Regular( Hop_Obj_t * p ) { return (Hop_Obj_t *)((unsigned long)(p) & ~01); }
static inline Hop_Obj_t * Hop_Not( Hop_Obj_t * p ) { return (Hop_Obj_t *)((unsigned long)(p) ^ 01); }
static inline Hop_Obj_t * Hop_NotCond( Hop_Obj_t * p, int c ) { return (Hop_Obj_t *)((unsigned long)(p) ^ (c)); }
static inline int Hop_IsComplement( Hop_Obj_t * p ) { return (int )(((unsigned long)p) & 01); }
static inline Hop_Obj_t * Hop_ManConst0( Hop_Man_t * p ) { return Hop_Not(p->pConst1); }
static inline Hop_Obj_t * Hop_ManConst1( Hop_Man_t * p ) { return p->pConst1; }
static inline Hop_Obj_t * Hop_ManGhost( Hop_Man_t * p ) { return &p->Ghost; }
static inline Hop_Obj_t * Hop_ManPi( Hop_Man_t * p, int i ) { return (Hop_Obj_t *)Vec_PtrEntry(p->vPis, i); }
static inline Hop_Edge_t Hop_EdgeCreate( int Id, int fCompl ) { return (Id << 1) | fCompl; }
static inline int Hop_EdgeId( Hop_Edge_t Edge ) { return Edge >> 1; }
static inline int Hop_EdgeIsComplement( Hop_Edge_t Edge ) { return Edge & 1; }
static inline Hop_Edge_t Hop_EdgeRegular( Hop_Edge_t Edge ) { return (Edge >> 1) << 1; }
static inline Hop_Edge_t Hop_EdgeNot( Hop_Edge_t Edge ) { return Edge ^ 1; }
static inline Hop_Edge_t Hop_EdgeNotCond( Hop_Edge_t Edge, int fCond ) { return Edge ^ fCond; }
static inline int Hop_ManPiNum( Hop_Man_t * p ) { return p->nObjs[AIG_PI]; }
static inline int Hop_ManPoNum( Hop_Man_t * p ) { return p->nObjs[AIG_PO]; }
static inline int Hop_ManAndNum( Hop_Man_t * p ) { return p->nObjs[AIG_AND]; }
static inline int Hop_ManExorNum( Hop_Man_t * p ) { return p->nObjs[AIG_EXOR]; }
static inline int Hop_ManNodeNum( Hop_Man_t * p ) { return p->nObjs[AIG_AND]+p->nObjs[AIG_EXOR];}
static inline int Hop_ManGetCost( Hop_Man_t * p ) { return p->nObjs[AIG_AND]+3*p->nObjs[AIG_EXOR]; }
static inline int Hop_ManObjNum( Hop_Man_t * p ) { return p->nCreated - p->nDeleted; }
static inline Hop_Type_t Hop_ObjType( Hop_Obj_t * pObj ) { return pObj->Type; }
static inline int Hop_ObjIsNone( Hop_Obj_t * pObj ) { return pObj->Type == AIG_NONE; }
static inline int Hop_ObjIsConst1( Hop_Obj_t * pObj ) { assert(!Hop_IsComplement(pObj)); return pObj->Type == AIG_CONST1; }
static inline int Hop_ObjIsPi( Hop_Obj_t * pObj ) { return pObj->Type == AIG_PI; }
static inline int Hop_ObjIsPo( Hop_Obj_t * pObj ) { return pObj->Type == AIG_PO; }
static inline int Hop_ObjIsAnd( Hop_Obj_t * pObj ) { return pObj->Type == AIG_AND; }
static inline int Hop_ObjIsExor( Hop_Obj_t * pObj ) { return pObj->Type == AIG_EXOR; }
static inline int Hop_ObjIsNode( Hop_Obj_t * pObj ) { return pObj->Type == AIG_AND || pObj->Type == AIG_EXOR; }
static inline int Hop_ObjIsTerm( Hop_Obj_t * pObj ) { return pObj->Type == AIG_PI || pObj->Type == AIG_PO || pObj->Type == AIG_CONST1; }
static inline int Hop_ObjIsHash( Hop_Obj_t * pObj ) { return pObj->Type == AIG_AND || pObj->Type == AIG_EXOR; }
static inline int Hop_ObjIsMarkA( Hop_Obj_t * pObj ) { return pObj->fMarkA; }
static inline void Hop_ObjSetMarkA( Hop_Obj_t * pObj ) { pObj->fMarkA = 1; }
static inline void Hop_ObjClearMarkA( Hop_Obj_t * pObj ) { pObj->fMarkA = 0; }
static inline void Hop_ObjSetTravId( Hop_Obj_t * pObj, int TravId ) { pObj->pData = (void *)TravId; }
static inline void Hop_ObjSetTravIdCurrent( Hop_Man_t * p, Hop_Obj_t * pObj ) { pObj->pData = (void *)p->nTravIds; }
static inline void Hop_ObjSetTravIdPrevious( Hop_Man_t * p, Hop_Obj_t * pObj ) { pObj->pData = (void *)(p->nTravIds - 1); }
static inline int Hop_ObjIsTravIdCurrent( Hop_Man_t * p, Hop_Obj_t * pObj ) { return (int )((int)pObj->pData == p->nTravIds); }
static inline int Hop_ObjIsTravIdPrevious( Hop_Man_t * p, Hop_Obj_t * pObj ) { return (int )((int)pObj->pData == p->nTravIds - 1); }
static inline int Hop_ObjTravId( Hop_Obj_t * pObj ) { return (int)pObj->pData; }
static inline int Hop_ObjPhase( Hop_Obj_t * pObj ) { return pObj->fPhase; }
static inline int Hop_ObjRefs( Hop_Obj_t * pObj ) { return pObj->nRefs; }
static inline void Hop_ObjRef( Hop_Obj_t * pObj ) { pObj->nRefs++; }
static inline void Hop_ObjDeref( Hop_Obj_t * pObj ) { assert( pObj->nRefs > 0 ); pObj->nRefs--; }
static inline void Hop_ObjClearRef( Hop_Obj_t * pObj ) { pObj->nRefs = 0; }
static inline int Hop_ObjFaninC0( Hop_Obj_t * pObj ) { return Hop_IsComplement(pObj->pFanin0); }
static inline int Hop_ObjFaninC1( Hop_Obj_t * pObj ) { return Hop_IsComplement(pObj->pFanin1); }
static inline Hop_Obj_t * Hop_ObjFanin0( Hop_Obj_t * pObj ) { return Hop_Regular(pObj->pFanin0); }
static inline Hop_Obj_t * Hop_ObjFanin1( Hop_Obj_t * pObj ) { return Hop_Regular(pObj->pFanin1); }
static inline Hop_Obj_t * Hop_ObjChild0( Hop_Obj_t * pObj ) { return pObj->pFanin0; }
static inline Hop_Obj_t * Hop_ObjChild1( Hop_Obj_t * pObj ) { return pObj->pFanin1; }
static inline Hop_Obj_t * Hop_ObjChild0Copy( Hop_Obj_t * pObj ) { assert( !Hop_IsComplement(pObj) ); return Hop_ObjFanin0(pObj)? Hop_NotCond(Hop_ObjFanin0(pObj)->pData, Hop_ObjFaninC0(pObj)) : NULL; }
static inline Hop_Obj_t * Hop_ObjChild1Copy( Hop_Obj_t * pObj ) { assert( !Hop_IsComplement(pObj) ); return Hop_ObjFanin1(pObj)? Hop_NotCond(Hop_ObjFanin1(pObj)->pData, Hop_ObjFaninC1(pObj)) : NULL; }
static inline int Hop_ObjLevel( Hop_Obj_t * pObj ) { return pObj->nRefs; }
static inline int Hop_ObjLevelNew( Hop_Obj_t * pObj ) { return 1 + Hop_ObjIsExor(pObj) + AIG_MAX(Hop_ObjFanin0(pObj)->nRefs, Hop_ObjFanin1(pObj)->nRefs); }
static inline void Hop_ObjClean( Hop_Obj_t * pObj ) { memset( pObj, 0, sizeof(Hop_Obj_t) ); }
static inline int Hop_ObjWhatFanin( Hop_Obj_t * pObj, Hop_Obj_t * pFanin )
{
if ( Hop_ObjFanin0(pObj) == pFanin ) return 0;
if ( Hop_ObjFanin1(pObj) == pFanin ) return 1;
assert(0); return -1;
}
static inline int Hop_ObjFanoutC( Hop_Obj_t * pObj, Hop_Obj_t * pFanout )
{
if ( Hop_ObjFanin0(pFanout) == pObj ) return Hop_ObjFaninC0(pObj);
if ( Hop_ObjFanin1(pFanout) == pObj ) return Hop_ObjFaninC1(pObj);
assert(0); return -1;
}
// create the ghost of the new node
static inline Hop_Obj_t * Hop_ObjCreateGhost( Hop_Man_t * p, Hop_Obj_t * p0, Hop_Obj_t * p1, Hop_Type_t Type )
{
Hop_Obj_t * pGhost;
assert( Type != AIG_AND || !Hop_ObjIsConst1(Hop_Regular(p0)) );
assert( p1 == NULL || !Hop_ObjIsConst1(Hop_Regular(p1)) );
assert( Type == AIG_PI || Hop_Regular(p0) != Hop_Regular(p1) );
pGhost = Hop_ManGhost(p);
pGhost->Type = Type;
pGhost->pFanin0 = p0 < p1? p0 : p1;
pGhost->pFanin1 = p0 < p1? p1 : p0;
return pGhost;
}
// internal memory manager
static inline Hop_Obj_t * Hop_ManFetchMemory( Hop_Man_t * p )
{
extern void Hop_ManAddMemory( Hop_Man_t * p );
Hop_Obj_t * pTemp;
if ( p->pListFree == NULL )
Hop_ManAddMemory( p );
pTemp = p->pListFree;
p->pListFree = *((Hop_Obj_t **)pTemp);
memset( pTemp, 0, sizeof(Hop_Obj_t) );
return pTemp;
}
static inline void Hop_ManRecycleMemory( Hop_Man_t * p, Hop_Obj_t * pEntry )
{
pEntry->Type = AIG_NONE; // distinquishes dead node from live node
*((Hop_Obj_t **)pEntry) = p->pListFree;
p->pListFree = pEntry;
}
////////////////////////////////////////////////////////////////////////
/// ITERATORS ///
////////////////////////////////////////////////////////////////////////
// iterator over the primary inputs
#define Hop_ManForEachPi( p, pObj, i ) \
Vec_PtrForEachEntry( p->vPis, pObj, i )
// iterator over the primary outputs
#define Hop_ManForEachPo( p, pObj, i ) \
Vec_PtrForEachEntry( p->vPos, pObj, i )
// iterator over all objects, including those currently not used
#define Hop_ManForEachNode( p, pObj, i ) \
for ( i = 0; i < p->nTableSize; i++ ) \
if ( ((pObj) = p->pTable[i]) == NULL ) {} else
////////////////////////////////////////////////////////////////////////
/// FUNCTION DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
/*=== aigBalance.c ========================================================*/
extern Hop_Man_t * Hop_ManBalance( Hop_Man_t * p, int fUpdateLevel );
extern Hop_Obj_t * Hop_NodeBalanceBuildSuper( Hop_Man_t * p, Vec_Ptr_t * vSuper, Hop_Type_t Type, int fUpdateLevel );
/*=== aigCheck.c ========================================================*/
extern int Hop_ManCheck( Hop_Man_t * p );
/*=== aigDfs.c ==========================================================*/
extern Vec_Ptr_t * Hop_ManDfs( Hop_Man_t * p );
extern Vec_Ptr_t * Hop_ManDfsNode( Hop_Man_t * p, Hop_Obj_t * pNode );
extern int Hop_ManCountLevels( Hop_Man_t * p );
extern void Hop_ManCreateRefs( Hop_Man_t * p );
extern int Hop_DagSize( Hop_Obj_t * pObj );
extern void Hop_ConeUnmark_rec( Hop_Obj_t * pObj );
extern Hop_Obj_t * Hop_Transfer( Hop_Man_t * pSour, Hop_Man_t * pDest, Hop_Obj_t * pObj, int nVars );
extern Hop_Obj_t * Hop_Compose( Hop_Man_t * p, Hop_Obj_t * pRoot, Hop_Obj_t * pFunc, int iVar );
/*=== aigMan.c ==========================================================*/
extern Hop_Man_t * Hop_ManStart();
extern Hop_Man_t * Hop_ManDup( Hop_Man_t * p );
extern void Hop_ManStop( Hop_Man_t * p );
extern int Hop_ManCleanup( Hop_Man_t * p );
extern void Hop_ManPrintStats( Hop_Man_t * p );
/*=== aigMem.c ==========================================================*/
extern void Hop_ManStartMemory( Hop_Man_t * p );
extern void Hop_ManStopMemory( Hop_Man_t * p );
/*=== aigObj.c ==========================================================*/
extern Hop_Obj_t * Hop_ObjCreatePi( Hop_Man_t * p );
extern Hop_Obj_t * Hop_ObjCreatePo( Hop_Man_t * p, Hop_Obj_t * pDriver );
extern Hop_Obj_t * Hop_ObjCreate( Hop_Man_t * p, Hop_Obj_t * pGhost );
extern void Hop_ObjConnect( Hop_Man_t * p, Hop_Obj_t * pObj, Hop_Obj_t * pFan0, Hop_Obj_t * pFan1 );
extern void Hop_ObjDisconnect( Hop_Man_t * p, Hop_Obj_t * pObj );
extern void Hop_ObjDelete( Hop_Man_t * p, Hop_Obj_t * pObj );
extern void Hop_ObjDelete_rec( Hop_Man_t * p, Hop_Obj_t * pObj );
/*=== aigOper.c =========================================================*/
extern Hop_Obj_t * Hop_IthVar( Hop_Man_t * p, int i );
extern Hop_Obj_t * Hop_Oper( Hop_Man_t * p, Hop_Obj_t * p0, Hop_Obj_t * p1, Hop_Type_t Type );
extern Hop_Obj_t * Hop_And( Hop_Man_t * p, Hop_Obj_t * p0, Hop_Obj_t * p1 );
extern Hop_Obj_t * Hop_Or( Hop_Man_t * p, Hop_Obj_t * p0, Hop_Obj_t * p1 );
extern Hop_Obj_t * Hop_Exor( Hop_Man_t * p, Hop_Obj_t * p0, Hop_Obj_t * p1 );
extern Hop_Obj_t * Hop_Mux( Hop_Man_t * p, Hop_Obj_t * pC, Hop_Obj_t * p1, Hop_Obj_t * p0 );
extern Hop_Obj_t * Hop_Maj( Hop_Man_t * p, Hop_Obj_t * pA, Hop_Obj_t * pB, Hop_Obj_t * pC );
extern Hop_Obj_t * Hop_Miter( Hop_Man_t * p, Vec_Ptr_t * vPairs );
extern Hop_Obj_t * Hop_CreateAnd( Hop_Man_t * p, int nVars );
extern Hop_Obj_t * Hop_CreateOr( Hop_Man_t * p, int nVars );
extern Hop_Obj_t * Hop_CreateExor( Hop_Man_t * p, int nVars );
/*=== aigTable.c ========================================================*/
extern Hop_Obj_t * Hop_TableLookup( Hop_Man_t * p, Hop_Obj_t * pGhost );
extern void Hop_TableInsert( Hop_Man_t * p, Hop_Obj_t * pObj );
extern void Hop_TableDelete( Hop_Man_t * p, Hop_Obj_t * pObj );
extern int Hop_TableCountEntries( Hop_Man_t * p );
extern void Hop_TableProfile( Hop_Man_t * p );
/*=== aigUtil.c =========================================================*/
extern void Hop_ManIncrementTravId( Hop_Man_t * p );
extern void Hop_ManCleanData( Hop_Man_t * p );
extern void Hop_ObjCollectMulti( Hop_Obj_t * pFunc, Vec_Ptr_t * vSuper );
extern int Hop_ObjIsMuxType( Hop_Obj_t * pObj );
extern int Hop_ObjRecognizeExor( Hop_Obj_t * pObj, Hop_Obj_t ** ppFan0, Hop_Obj_t ** ppFan1 );
extern Hop_Obj_t * Hop_ObjRecognizeMux( Hop_Obj_t * pObj, Hop_Obj_t ** ppObjT, Hop_Obj_t ** ppObjE );
extern void Hop_ObjPrintVerilog( FILE * pFile, Hop_Obj_t * pObj, Vec_Vec_t * vLevels, int Level );
extern void Hop_ObjPrintVerbose( Hop_Obj_t * pObj, int fHaig );
extern void Hop_ManPrintVerbose( Hop_Man_t * p, int fHaig );
extern void Hop_ManDumpBlif( Hop_Man_t * p, char * pFileName );
#ifdef __cplusplus
}
#endif
#endif
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
|
