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|
/**CFile****************************************************************
FileName [abcLib.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Network and node package.]
Synopsis [Functions to manipulate verilog libraries.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: abcLib.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "abc.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Create the library.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Lib_t * Abc_LibCreate( char * pName )
{
Abc_Lib_t * p;
p = ALLOC( Abc_Lib_t, 1 );
memset( p, 0, sizeof(Abc_Lib_t) );
p->pName = Extra_UtilStrsav( pName );
p->tModules = st_init_table( strcmp, st_strhash );
p->vTops = Vec_PtrAlloc( 100 );
p->vModules = Vec_PtrAlloc( 100 );
p->pManFunc = Hop_ManStart();
p->pLibrary = NULL;
return p;
}
/**Function*************************************************************
Synopsis [Frees the library.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Abc_LibFree( Abc_Lib_t * pLib, Abc_Ntk_t * pNtkSave )
{
Abc_Ntk_t * pNtk;
int i;
if ( pLib->pName )
free( pLib->pName );
if ( pLib->pManFunc )
Hop_ManStop( pLib->pManFunc );
if ( pLib->tModules )
st_free_table( pLib->tModules );
if ( pLib->vModules )
{
Vec_PtrForEachEntry( pLib->vModules, pNtk, i )
{
if ( pNtk == pNtkSave )
continue;
// pNtk->pManFunc = NULL;
pNtk->pDesign = NULL;
Abc_NtkDelete( pNtk );
}
Vec_PtrFree( pLib->vModules );
}
if ( pLib->vTops )
Vec_PtrFree( pLib->vTops );
free( pLib );
}
/**Function*************************************************************
Synopsis [Frees the library.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Lib_t * Abc_LibDupBlackboxes( Abc_Lib_t * pLib, Abc_Ntk_t * pNtkSave )
{
Abc_Lib_t * pLibNew;
Abc_Ntk_t * pNtkTemp;
int i;
assert( Vec_PtrSize(pLib->vTops) > 0 );
assert( Vec_PtrSize(pLib->vModules) > 1 );
pLibNew = Abc_LibCreate( pLib->pName );
// pLibNew->pManFunc = pNtkSave->pManFunc;
Vec_PtrPush( pLibNew->vTops, pNtkSave );
Vec_PtrPush( pLibNew->vModules, pNtkSave );
Vec_PtrForEachEntry( pLib->vModules, pNtkTemp, i )
if ( Abc_NtkHasBlackbox( pNtkTemp ) )
Vec_PtrPush( pLibNew->vModules, Abc_NtkDup(pNtkTemp) );
return pLibNew;
}
/**Function*************************************************************
Synopsis [Prints the library.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Abc_LibPrint( Abc_Lib_t * pLib )
{
Abc_Ntk_t * pNtk;
Abc_Obj_t * pObj;
int i, k;
printf( "Models of design %s:\n", pLib->pName );
Vec_PtrForEachEntry( pLib->vModules, pNtk, i )
{
printf( "%2d : %20s ", i+1, pNtk->pName );
printf( "nd = %6d lat = %6d whitebox = %3d blackbox = %3d\n",
Abc_NtkNodeNum(pNtk), Abc_NtkLatchNum(pNtk),
Abc_NtkWhiteboxNum(pNtk), Abc_NtkBlackboxNum(pNtk) );
if ( Abc_NtkBlackboxNum(pNtk) == 0 )
continue;
Abc_NtkForEachWhitebox( pNtk, pObj, k )
printf( " %20s (whitebox)\n", Abc_NtkName(pObj->pData) );
Abc_NtkForEachBlackbox( pNtk, pObj, k )
printf( " %20s (blackbox)\n", Abc_NtkName(pObj->pData) );
}
}
/**Function*************************************************************
Synopsis [Create the library.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Abc_LibAddModel( Abc_Lib_t * pLib, Abc_Ntk_t * pNtk )
{
if ( st_is_member( pLib->tModules, (char *)pNtk->pName ) )
return 0;
st_insert( pLib->tModules, (char *)pNtk->pName, (char *)pNtk );
Vec_PtrPush( pLib->vModules, pNtk );
pNtk->pDesign = pLib;
return 1;
}
/**Function*************************************************************
Synopsis [Create the library.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Ntk_t * Abc_LibFindModelByName( Abc_Lib_t * pLib, char * pName )
{
Abc_Ntk_t * pNtk;
if ( !st_is_member( pLib->tModules, (char *)pName ) )
return NULL;
st_lookup( pLib->tModules, (char *)pName, (char **)&pNtk );
return pNtk;
}
/**Function*************************************************************
Synopsis [Frees the library.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Ntk_t * Abc_LibDeriveRoot( Abc_Lib_t * pLib )
{
Abc_Ntk_t * pNtk;
if ( Vec_PtrSize(pLib->vModules) > 1 )
{
printf( "The design includes more than one module and is currently not used.\n" );
return NULL;
}
pNtk = Vec_PtrEntry( pLib->vModules, 0 ); Vec_PtrClear( pLib->vModules );
pNtk->pManFunc = pLib->pManFunc; pLib->pManFunc = NULL;
return pNtk;
}
/**Function*************************************************************
Synopsis [Detects the top-level models.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Abc_LibFindTopLevelModels( Abc_Lib_t * pLib )
{
Abc_Ntk_t * pNtk, * pNtkBox;
Abc_Obj_t * pObj;
int i, k;
assert( Vec_PtrSize( pLib->vModules ) > 0 );
// clear the models
Vec_PtrForEachEntry( pLib->vModules, pNtk, i )
pNtk->fHieVisited = 0;
// mark all the models reachable from other models
Vec_PtrForEachEntry( pLib->vModules, pNtk, i )
{
Abc_NtkForEachBox( pNtk, pObj, k )
{
if ( Abc_ObjIsLatch(pObj) )
continue;
if ( pObj->pData == NULL )
continue;
pNtkBox = pObj->pData;
pNtkBox->fHieVisited = 1;
}
}
// collect the models that are not marked
Vec_PtrClear( pLib->vTops );
Vec_PtrForEachEntry( pLib->vModules, pNtk, i )
{
if ( pNtk->fHieVisited == 0 )
Vec_PtrPush( pLib->vTops, pNtk );
else
pNtk->fHieVisited = 0;
}
return Vec_PtrSize( pLib->vTops );
}
/**Function*************************************************************
Synopsis [Surround boxes without content (black boxes) with BIs/BOs.]
Description [Returns the number of black boxes converted.]
SideEffects []
SeeAlso []
***********************************************************************/
int Abc_LibDeriveBlackBoxes( Abc_Ntk_t * pNtk, Abc_Lib_t * pLib )
{
/*
Abc_Obj_t * pObj, * pFanin, * pFanout;
int i, k;
assert( Abc_NtkIsNetlist(pNtk) );
// collect blackbox nodes
assert( Vec_PtrSize(pNtk->vBoxes) == 0 );
Vec_PtrClear( pNtk->vBoxes );
Abc_NtkForEachBox( pNtk, pObj, i )
if ( Abc_NtkNodeNum(pObj->pData) == 0 )
Vec_PtrPush( pNtk->vBoxes, pObj );
// return if there is no black boxes without content
if ( Vec_PtrSize(pNtk->vBoxes) == 0 )
return 0;
// print the boxes
printf( "Black boxes are: " );
Abc_NtkForEachBox( pNtk, pObj, i )
printf( " %s", ((Abc_Ntk_t *)pObj->pData)->pName );
printf( "\n" );
// iterate through the boxes and add BIs/BOs
Abc_NtkForEachBox( pNtk, pObj, i )
{
// go through the fanin nets
Abc_ObjForEachFanin( pObj, pFanin, k )
Abc_ObjInsertBetween( pFanin, pObj, ABC_OBJ_BI );
// go through the fanout nets
Abc_ObjForEachFanout( pObj, pFanout, k )
{
Abc_ObjInsertBetween( pObj, pFanout, ABC_OBJ_BO );
// if the name is not given assign name
if ( pFanout->pData == NULL )
{
pFanout->pData = Abc_ObjName( pFanout );
Nm_ManStoreIdName( pNtk->pManName, pFanout->Id, pFanout->pData, NULL );
}
}
}
return Vec_PtrSize(pNtk->vBoxes);
*/
return 0;
}
/**Function*************************************************************
Synopsis [Derive the AIG of the logic in the netlist.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Abc_NodeStrashUsingNetwork_rec( Abc_Ntk_t * pNtkAig, Abc_Obj_t * pObj )
{
Abc_Obj_t * pFanin;
int i;
assert( !Abc_ObjIsNet(pObj) );
if ( pObj->pCopy )
return;
// call for the fanins
Abc_ObjForEachFanin( pObj, pFanin, i )
Abc_NodeStrashUsingNetwork_rec( pNtkAig, Abc_ObjFanin0Ntk(Abc_ObjFanin0(pObj)) );
// compute for the node
pObj->pCopy = Abc_NodeStrash( pNtkAig, pObj, 0 );
// set for the fanout net
Abc_ObjFanout0(pObj)->pCopy = pObj->pCopy;
}
/**Function*************************************************************
Synopsis [Derive the AIG of the logic in the netlist.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Abc_NodeStrashUsingNetwork( Abc_Ntk_t * pNtkAig, Abc_Obj_t * pBox )
{
Abc_Ntk_t * pNtkGate;
Abc_Obj_t * pObj;
unsigned * pPolarity;
int i, fCompl;
assert( Abc_ObjIsBox(pBox) );
pNtkGate = pBox->pData;
pPolarity = (unsigned *)pBox->pNext;
assert( Abc_NtkIsNetlist(pNtkGate) );
assert( Abc_NtkLatchNum(pNtkGate) == 0 );
Abc_NtkCleanCopy( pNtkGate );
// set the PI values
Abc_NtkForEachPi( pNtkGate, pObj, i )
{
fCompl = (pPolarity && Abc_InfoHasBit(pPolarity, i));
pObj->pCopy = Abc_ObjNotCond( Abc_ObjFanin(pBox,i)->pCopy, fCompl );
Abc_ObjFanout0(pObj)->pCopy = pObj->pCopy;
}
// build recursively and set the PO values
Abc_NtkForEachPo( pNtkGate, pObj, i )
{
Abc_NodeStrashUsingNetwork_rec( pNtkAig, Abc_ObjFanin0Ntk(Abc_ObjFanin0(pObj)) );
Abc_ObjFanout(pBox,i)->pCopy = Abc_ObjFanin0(pObj)->pCopy;
}
//printf( "processing %d\n", pBox->Id );
}
/**Function*************************************************************
Synopsis [Derive the AIG of the logic in the netlist.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Ntk_t * Abc_LibDeriveAig( Abc_Ntk_t * pNtk, Abc_Lib_t * pLib )
{
ProgressBar * pProgress;
Vec_Ptr_t * vNodes;
Abc_Ntk_t * pNtkAig;
Abc_Obj_t * pObj;
int i, nBoxes;
// explicitly derive black boxes
assert( Abc_NtkIsNetlist(pNtk) );
nBoxes = Abc_LibDeriveBlackBoxes( pNtk, pLib );
if ( nBoxes )
printf( "Detected and transformed %d black boxes.\n", nBoxes );
// create the new network with black boxes in place
pNtkAig = Abc_NtkStartFrom( pNtk, ABC_NTK_STRASH, ABC_FUNC_AIG );
// transer to the nets
Abc_NtkForEachCi( pNtk, pObj, i )
Abc_ObjFanout0(pObj)->pCopy = pObj->pCopy;
// build the AIG for the remaining logic in the netlist
vNodes = Abc_NtkDfs( pNtk, 0 );
pProgress = Extra_ProgressBarStart( stdout, Vec_PtrSize(vNodes) );
Vec_PtrForEachEntry( vNodes, pObj, i )
{
Extra_ProgressBarUpdate( pProgress, i, NULL );
if ( Abc_ObjIsNode(pObj) )
{
pObj->pCopy = Abc_NodeStrash( pNtkAig, pObj, 0 );
Abc_ObjFanout0(pObj)->pCopy = pObj->pCopy;
continue;
}
Abc_NodeStrashUsingNetwork( pNtkAig, pObj );
}
Extra_ProgressBarStop( pProgress );
Vec_PtrFree( vNodes );
// deallocate memory manager, which remembers the phase
if ( pNtk->pData )
{
Extra_MmFlexStop( pNtk->pData );
pNtk->pData = NULL;
}
// set the COs
// Abc_NtkFinalize( pNtk, pNtkAig );
Abc_NtkForEachCo( pNtk, pObj, i )
Abc_ObjAddFanin( pObj->pCopy, Abc_ObjFanin0(pObj)->pCopy );
Abc_AigCleanup( pNtkAig->pManFunc );
// make sure that everything is okay
if ( !Abc_NtkCheck( pNtkAig ) )
{
printf( "Abc_LibDeriveAig: The network check has failed.\n" );
return 0;
}
return pNtkAig;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
|
