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/**CFile****************************************************************
FileName [seqInt.h]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Construction and manipulation of sequential AIGs.]
Synopsis [External declarations.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: seqInt.h,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#ifndef __SEQ_INT_H__
#define __SEQ_INT_H__
////////////////////////////////////////////////////////////////////////
/// INCLUDES ///
////////////////////////////////////////////////////////////////////////
#include "abc.h"
#include "seq.h"
////////////////////////////////////////////////////////////////////////
/// PARAMETERS ///
////////////////////////////////////////////////////////////////////////
#define SEQ_FULL_MASK 0xFFFFFFFF
////////////////////////////////////////////////////////////////////////
/// BASIC TYPES ///
////////////////////////////////////////////////////////////////////////
// manager of sequential AIG
struct Abc_Seq_t_
{
Abc_Ntk_t * pNtk; // the network
int nSize; // the number of entries in all internal arrays
Vec_Ptr_t * vInits; // the initial states for each edge in the AIG
Extra_MmFixed_t * pMmInits; // memory manager for latch structures used to remember init states
int fVerbose; // the verbose flag
// the arrival times
Vec_Int_t * vLValues; // the arrival times (L-Values of nodes)
Vec_Ptr_t * vBestCuts; // the best cuts for nodes
Vec_Str_t * vLags; // the lags of the mapped nodes
// representation of the mapping
Vec_Ptr_t * vMapAnds; // nodes visible in the mapping
Vec_Vec_t * vMapCuts; // best cuts for each node
Vec_Vec_t * vMapBags; // nodes subsumed by each cut
Vec_Vec_t * vMapLags; // the internal lags of each node in the bag
// runtime stats
int timeCuts; // runtime to compute the cuts
int timeDelay; // runtime to compute the L-values
int timeRet; // runtime to retime the resulting network
int timeNtk; // runtime to create the final network
};
// data structure to store initial state
typedef struct Seq_Lat_t_ Seq_Lat_t;
struct Seq_Lat_t_
{
Seq_Lat_t * pNext; // the next Lat in the ring
Seq_Lat_t * pPrev; // the prev Lat in the ring
};
// representation of latch on the edge
typedef struct Seq_RetEdge_t_ Seq_RetEdge_t;
struct Seq_RetEdge_t_ // 1 word
{
unsigned iNode : 24; // the ID of the node
unsigned iEdge : 1; // the edge of the node
unsigned iLatch : 7; // the latch number counting from the node
};
// representation of one retiming step
typedef struct Seq_RetStep_t_ Seq_RetStep_t;
struct Seq_RetStep_t_ // 1 word
{
unsigned iNode : 24; // the ID of the node
unsigned nLatches : 8; // the number of latches to retime
};
////////////////////////////////////////////////////////////////////////
/// MACRO DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
// transforming retedges into ints and back
static inline int Seq_RetEdge2Int( Seq_RetEdge_t Val ) { return *((int *)&Val); }
static inline Seq_RetEdge_t Seq_Int2RetEdge( int Num ) { return *((Seq_RetEdge_t *)&Num); }
// transforming retsteps into ints and back
static inline int Seq_RetStep2Int( Seq_RetStep_t Val ) { return *((int *)&Val); }
static inline Seq_RetStep_t Seq_Int2RetStep( int Num ) { return *((Seq_RetStep_t *)&Num); }
// storing arrival times in the nodes
static inline Vec_Int_t * Seq_NodeLValues( Abc_Obj_t * pNode ) { return ((Abc_Seq_t *)(pNode)->pNtk->pManFunc)->vLValues; }
static inline int Seq_NodeGetLValue( Abc_Obj_t * pNode ) { return Vec_IntEntry( Seq_NodeLValues(pNode), (pNode)->Id ); }
static inline void Seq_NodeSetLValue( Abc_Obj_t * pNode, int Value ) { Vec_IntWriteEntry( Seq_NodeLValues(pNode), (pNode)->Id, (Value) ); }
static inline int Seq_NodeComputeLag( int LValue, int Fi ) { return (LValue + 1024*Fi)/Fi - 1024 - (int)(LValue % Fi == 0); }
// reading the contents of the lat
static inline Abc_InitType_t Seq_LatInit( Seq_Lat_t * pLat ) { return ((unsigned)pLat->pPrev) & 3; }
static inline Seq_Lat_t * Seq_LatNext( Seq_Lat_t * pLat ) { return pLat->pNext; }
static inline Seq_Lat_t * Seq_LatPrev( Seq_Lat_t * pLat ) { return (void *)(((unsigned)pLat->pPrev) & (SEQ_FULL_MASK << 2)); }
// setting the contents of the lat
static inline void Seq_LatSetInit( Seq_Lat_t * pLat, Abc_InitType_t Init ) { pLat->pPrev = (void *)( (3 & Init) | (((unsigned)pLat->pPrev) & (SEQ_FULL_MASK << 2)) ); }
static inline void Seq_LatSetNext( Seq_Lat_t * pLat, Seq_Lat_t * pNext ) { pLat->pNext = pNext; }
static inline void Seq_LatSetPrev( Seq_Lat_t * pLat, Seq_Lat_t * pPrev ) { Abc_InitType_t Init = Seq_LatInit(pLat); pLat->pPrev = pPrev; Seq_LatSetInit(pLat, Init); }
// accessing retiming lags
static inline Vec_Str_t * Seq_NodeLags( Abc_Obj_t * pNode ) { return ((Abc_Seq_t *)(pNode)->pNtk->pManFunc)->vLags; }
static inline char Seq_NodeGetLag( Abc_Obj_t * pNode ) { return Vec_StrEntry( Seq_NodeLags(pNode), (pNode)->Id ); }
static inline void Seq_NodeSetLag( Abc_Obj_t * pNode, char Value ) { Vec_StrWriteEntry( Seq_NodeLags(pNode), (pNode)->Id, (Value) ); }
// accessing initial states
static inline Vec_Ptr_t * Seq_NodeLats( Abc_Obj_t * pObj ) { return ((Abc_Seq_t*)pObj->pNtk->pManFunc)->vInits; }
static inline Seq_Lat_t * Seq_NodeGetRing( Abc_Obj_t * pObj, int Edge ) { return Vec_PtrEntry( Seq_NodeLats(pObj), (pObj->Id<<1)+Edge ); }
static inline void Seq_NodeSetRing( Abc_Obj_t * pObj, int Edge, Seq_Lat_t * pLat ) { Vec_PtrWriteEntry( Seq_NodeLats(pObj), (pObj->Id<<1)+Edge, pLat ); }
static inline Seq_Lat_t * Seq_NodeCreateLat( Abc_Obj_t * pObj ) { return (Seq_Lat_t *)Extra_MmFixedEntryFetch( ((Abc_Seq_t*)pObj->pNtk->pManFunc)->pMmInits ); }
static inline void Seq_NodeRecycleLat( Abc_Obj_t * pObj, Seq_Lat_t * pLat ) { Extra_MmFixedEntryRecycle( ((Abc_Seq_t*)pObj->pNtk->pManFunc)->pMmInits, (char *)pLat ); }
// getting hold of the structure storing initial states of the latches
static inline Seq_Lat_t * Seq_NodeGetLatFirst( Abc_Obj_t * pObj, int Edge ) { return Seq_NodeGetRing(pObj, Edge); }
static inline Seq_Lat_t * Seq_NodeGetLatLast( Abc_Obj_t * pObj, int Edge ) { return Seq_LatPrev( Seq_NodeGetRing(pObj, Edge) ); }
static inline Seq_Lat_t * Seq_NodeGetLat( Abc_Obj_t * pObj, int Edge, int iLat ) { int c; Seq_Lat_t * pLat = Seq_NodeGetRing(pObj, Edge); for ( c = 0; c != iLat; c++ ) pLat = pLat->pNext; return pLat; }
static inline int Seq_NodeCountLats( Abc_Obj_t * pObj, int Edge ) { int c; Seq_Lat_t * pLat, * pRing = Seq_NodeGetRing(pObj, Edge); if ( pRing == NULL ) return 0; for ( c = 0, pLat = pRing; !c || pLat != pRing; c++ ) pLat = pLat->pNext; return c; }
// getting/setting initial states of the latches
static inline Abc_InitType_t Seq_NodeGetInitOne( Abc_Obj_t * pObj, int Edge, int iLat ) { return Seq_LatInit( Seq_NodeGetLat(pObj, Edge, iLat) ); }
static inline Abc_InitType_t Seq_NodeGetInitFirst( Abc_Obj_t * pObj, int Edge ) { return Seq_LatInit( Seq_NodeGetLatFirst(pObj, Edge) ); }
static inline Abc_InitType_t Seq_NodeGetInitLast( Abc_Obj_t * pObj, int Edge ) { return Seq_LatInit( Seq_NodeGetLatLast(pObj, Edge) ); }
static inline void Seq_NodeSetInitOne( Abc_Obj_t * pObj, int Edge, int iLat, Abc_InitType_t Init ) { Seq_LatSetInit( Seq_NodeGetLat(pObj, Edge, iLat), Init ); }
////////////////////////////////////////////////////////////////////////
/// FUNCTION DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
/*=== seqLatch.c ===============================================================*/
extern void Seq_NodeInsertFirst( Abc_Obj_t * pObj, int Edge, Abc_InitType_t Init );
extern void Seq_NodeInsertLast( Abc_Obj_t * pObj, int Edge, Abc_InitType_t Init );
extern Abc_InitType_t Seq_NodeDeleteFirst( Abc_Obj_t * pObj, int Edge );
extern Abc_InitType_t Seq_NodeDeleteLast( Abc_Obj_t * pObj, int Edge );
/*=== seqFpgaIter.c ============================================================*/
extern void Seq_NtkSeqFpgaMapping( Abc_Ntk_t * pNtk, int fVerbose );
/*=== seqRetIter.c =============================================================*/
extern void Seq_NtkSeqRetimeDelayLags( Abc_Ntk_t * pNtk, int fVerbose );
extern int Seq_NtkImplementRetiming( Abc_Ntk_t * pNtk, Vec_Str_t * vLags, int fVerbose );
/*=== seqUtil.c ================================================================*/
extern int Seq_ObjFanoutLMax( Abc_Obj_t * pObj );
extern int Seq_ObjFanoutLMin( Abc_Obj_t * pObj );
extern int Seq_ObjFanoutLSum( Abc_Obj_t * pObj );
extern int Seq_ObjFaninLSum( Abc_Obj_t * pObj );
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
#endif
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