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|
/**CFile****************************************************************
FileName [abcCheck.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Network and node package.]
Synopsis [Consistency checking procedures.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: abcCheck.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "abc.h"
#include "main.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
static bool Abc_NtkCheckNames( Abc_Ntk_t * pNtk );
static bool Abc_NtkCheckPis( Abc_Ntk_t * pNtk );
static bool Abc_NtkCheckPos( Abc_Ntk_t * pNtk );
//static bool Abc_NtkCheckObj( Abc_Ntk_t * pNtk, Abc_Obj_t * pObj );
static bool Abc_NtkCheckNet( Abc_Ntk_t * pNtk, Abc_Obj_t * pNet );
static bool Abc_NtkCheckNode( Abc_Ntk_t * pNtk, Abc_Obj_t * pNode );
static bool Abc_NtkCheckLatch( Abc_Ntk_t * pNtk, Abc_Obj_t * pLatch );
static bool Abc_NtkComparePis( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int fComb );
static bool Abc_NtkComparePos( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int fComb );
static bool Abc_NtkCompareLatches( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int fComb );
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Checks the integrity of the network.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
bool Abc_NtkCheck( Abc_Ntk_t * pNtk )
{
Abc_Obj_t * pObj, * pNet, * pNode;
int i;
if ( !Abc_NtkIsNetlist(pNtk) && !Abc_NtkIsLogic(pNtk) && !Abc_NtkIsStrash(pNtk) && !Abc_NtkIsSeq(pNtk) )
{
fprintf( stdout, "NetworkCheck: Unknown network type.\n" );
return 0;
}
if ( !Abc_NtkHasSop(pNtk) && !Abc_NtkHasBdd(pNtk) && !Abc_NtkHasAig(pNtk) && !Abc_NtkHasMapping(pNtk) )
{
fprintf( stdout, "NetworkCheck: Unknown functionality type.\n" );
return 0;
}
if ( Abc_NtkHasMapping(pNtk) )
{
if ( pNtk->pManFunc != Abc_FrameReadLibGen(Abc_FrameGetGlobalFrame()) )
{
fprintf( stdout, "NetworkCheck: The library of the mapped network is not the global library.\n" );
return 0;
}
}
// check the names
if ( !Abc_NtkCheckNames( pNtk ) )
return 0;
// check PIs and POs
Abc_NtkCleanCopy( pNtk );
if ( !Abc_NtkCheckPis( pNtk ) )
return 0;
if ( !Abc_NtkCheckPos( pNtk ) )
return 0;
// check the connectivity of objects
Abc_NtkForEachObj( pNtk, pObj, i )
if ( !Abc_NtkCheckObj( pNtk, pObj ) )
return 0;
// if it is a netlist change nets and latches
if ( Abc_NtkIsNetlist(pNtk) )
{
if ( Abc_NtkNetNum(pNtk) == 0 )
{
fprintf( stdout, "NetworkCheck: Netlist has no nets.\n" );
return 0;
}
// check the nets
Abc_NtkForEachNet( pNtk, pNet, i )
if ( !Abc_NtkCheckNet( pNtk, pNet ) )
return 0;
}
else
{
if ( Abc_NtkNetNum(pNtk) != 0 )
{
fprintf( stdout, "NetworkCheck: A network that is not a netlist has nets.\n" );
return 0;
}
}
// check the nodes
if ( Abc_NtkHasAig(pNtk) )
{
if ( Abc_NtkIsStrash(pNtk) )
Abc_AigCheck( pNtk->pManFunc );
}
else
{
Abc_NtkForEachNode( pNtk, pNode, i )
if ( !Abc_NtkCheckNode( pNtk, pNode ) )
return 0;
}
// check the latches
Abc_NtkForEachLatch( pNtk, pNode, i )
if ( !Abc_NtkCheckLatch( pNtk, pNode ) )
return 0;
// finally, check for combinational loops
// clk = clock();
if ( !Abc_NtkIsSeq( pNtk ) && !Abc_NtkIsAcyclic( pNtk ) )
{
fprintf( stdout, "NetworkCheck: Network contains a combinational loop.\n" );
return 0;
}
// PRT( "Acyclic ", clock() - clk );
// check the EXDC network if present
if ( pNtk->pExdc )
{
// if ( pNtk->Type != pNtk->pExdc->Type )
// {
// fprintf( stdout, "NetworkCheck: Network and its EXDC have different types.\n" );
// return 0;
// }
return Abc_NtkCheck( pNtk->pExdc );
}
return 1;
}
/**Function*************************************************************
Synopsis [Checks the names.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
bool Abc_NtkCheckNames( Abc_Ntk_t * pNtk )
{
stmm_generator * gen;
Abc_Obj_t * pNet, * pNet2, * pObj;
char * pName;
int i;
if ( Abc_NtkIsNetlist(pNtk) )
{
// check that the nets in the table are also in the network
stmm_foreach_item( pNtk->tName2Net, gen, &pName, (char**)&pNet )
{
if ( pNet->pData != pName )
{
fprintf( stdout, "NetworkCheck: Net \"%s\" has different name compared to the one in the name table.\n", pNet->pData );
return 0;
}
}
// check that the nets with names are also in the table
Abc_NtkForEachNet( pNtk, pNet, i )
{
if ( pNet->pData && !stmm_lookup( pNtk->tName2Net, pNet->pData, (char**)&pNet2 ) )
{
fprintf( stdout, "NetworkCheck: Net \"%s\" is in the network but not in the name table.\n", pNet->pData );
return 0;
}
}
}
// check PI/PO/latch names
Abc_NtkForEachPi( pNtk, pObj, i )
{
if ( !stmm_lookup( pNtk->tObj2Name, (char *)pObj, &pName ) )
{
fprintf( stdout, "NetworkCheck: PI \"%s\" is in the network but not in the name table.\n", Abc_ObjName(pObj) );
return 0;
}
if ( Abc_NtkIsNetlist(pNtk) && strcmp( Abc_ObjName(Abc_ObjFanout0(pObj)), pName ) )
{
fprintf( stdout, "NetworkCheck: PI \"%s\" has a different name compared to its net.\n", Abc_ObjName(pObj) );
return 0;
}
}
Abc_NtkForEachPo( pNtk, pObj, i )
{
if ( !stmm_lookup( pNtk->tObj2Name, (char *)pObj, &pName ) )
{
fprintf( stdout, "NetworkCheck: PO \"%s\" is in the network but not in the name table.\n", Abc_ObjName(pObj) );
return 0;
}
if ( Abc_NtkIsNetlist(pNtk) && strcmp( Abc_ObjName(Abc_ObjFanin0(pObj)), pName ) )
{
fprintf( stdout, "NetworkCheck: PO \"%s\" has a different name compared to its net.\n", Abc_ObjName(pObj) );
return 0;
}
}
Abc_NtkForEachLatch( pNtk, pObj, i )
{
if ( !stmm_lookup( pNtk->tObj2Name, (char *)pObj, &pName ) )
{
fprintf( stdout, "NetworkCheck: Latch \"%s\" is in the network but not in the name table.\n", Abc_ObjName(pObj) );
return 0;
}
if ( Abc_NtkIsNetlist(pNtk) && strcmp( Abc_ObjName(Abc_ObjFanout0(pObj)), pName ) )
{
fprintf( stdout, "NetworkCheck: Latch \"%s\" has a different name compared to its net.\n", Abc_ObjName(pObj) );
return 0;
}
}
return 1;
}
/**Function*************************************************************
Synopsis [Checks the PIs of the network.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
bool Abc_NtkCheckPis( Abc_Ntk_t * pNtk )
{
Abc_Obj_t * pObj;
int i;
if ( Abc_NtkCiNum(pNtk) != Abc_NtkPiNum(pNtk) + Abc_NtkLatchNum(pNtk) )
{
fprintf( stdout, "NetworkCheck: Incorrect size of the PI array.\n" );
return 0;
}
// check that PIs are indeed PIs
Abc_NtkForEachPi( pNtk, pObj, i )
{
if ( !Abc_ObjIsPi(pObj) )
{
fprintf( stdout, "NetworkCheck: Object \"%s\" (id=%d) is in the PI list but is not a PI.\n", Abc_ObjName(pObj), pObj->Id );
return 0;
}
if ( pObj->pData )
{
fprintf( stdout, "NetworkCheck: A PI \"%s\" has a logic function.\n", Abc_ObjName(pObj) );
return 0;
}
if ( Abc_ObjFaninNum(pObj) > 0 )
{
fprintf( stdout, "NetworkCheck: A PI \"%s\" has fanins.\n", Abc_ObjName(pObj) );
return 0;
}
pObj->pCopy = (Abc_Obj_t *)1;
}
Abc_NtkForEachObj( pNtk, pObj, i )
{
if ( pObj->pCopy == NULL && Abc_ObjIsPi(pObj) )
{
fprintf( stdout, "NetworkCheck: Object \"%s\" (id=%d) is a PI but is not in the PI list.\n", Abc_ObjName(pObj), pObj->Id );
return 0;
}
pObj->pCopy = NULL;
}
return 1;
}
/**Function*************************************************************
Synopsis [Checks the POs of the network.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
bool Abc_NtkCheckPos( Abc_Ntk_t * pNtk )
{
Abc_Obj_t * pObj;
int i;
if ( Abc_NtkCoNum(pNtk) != Abc_NtkPoNum(pNtk) + Abc_NtkLatchNum(pNtk) )
{
fprintf( stdout, "NetworkCheck: Incorrect size of the PO array.\n" );
return 0;
}
// check that POs are indeed POs
Abc_NtkForEachPo( pNtk, pObj, i )
{
if ( !Abc_ObjIsPo(pObj) )
{
fprintf( stdout, "NetworkCheck: Net \"%s\" (id=%d) is in the PO list but is not a PO.\n", Abc_ObjName(pObj), pObj->Id );
return 0;
}
if ( pObj->pData )
{
fprintf( stdout, "NetworkCheck: A PO \"%s\" has a logic function.\n", Abc_ObjName(pObj) );
return 0;
}
if ( Abc_ObjFaninNum(pObj) != 1 )
{
fprintf( stdout, "NetworkCheck: A PO \"%s\" does not have one fanin.\n", Abc_ObjName(pObj) );
return 0;
}
if ( Abc_ObjFanoutNum(pObj) > 0 )
{
fprintf( stdout, "NetworkCheck: A PO \"%s\" has fanouts.\n", Abc_ObjName(pObj) );
return 0;
}
pObj->pCopy = (Abc_Obj_t *)1;
}
Abc_NtkForEachObj( pNtk, pObj, i )
{
if ( pObj->pCopy == NULL && Abc_ObjIsPo(pObj) )
{
fprintf( stdout, "NetworkCheck: Net \"%s\" (id=%d) is in a PO but is not in the PO list.\n", Abc_ObjName(pObj), pObj->Id );
return 0;
}
pObj->pCopy = NULL;
}
return 1;
}
/**Function*************************************************************
Synopsis [Checks the connectivity of the object.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
bool Abc_NtkCheckObj( Abc_Ntk_t * pNtk, Abc_Obj_t * pObj )
{
Abc_Obj_t * pFanin, * pFanout;
int i, Value = 1;
int k;
// check the network
if ( pObj->pNtk != pNtk )
{
fprintf( stdout, "NetworkCheck: Object \"%s\" does not belong to the network.\n", Abc_ObjName(pObj) );
return 0;
}
// check the object ID
if ( pObj->Id < 0 || (int)pObj->Id >= Abc_NtkObjNumMax(pNtk) )
{
fprintf( stdout, "NetworkCheck: Object \"%s\" has incorrect ID.\n", Abc_ObjName(pObj) );
return 0;
}
// go through the fanins of the object and make sure fanins have this object as a fanout
Abc_ObjForEachFanin( pObj, pFanin, i )
{
if ( Vec_FanFindEntry( &pFanin->vFanouts, pObj->Id ) == -1 )
{
fprintf( stdout, "NodeCheck: Object \"%s\" has fanin ", Abc_ObjName(pObj) );
fprintf( stdout, "\"%s\" but the fanin does not have it as a fanout.\n", Abc_ObjName(pFanin) );
Value = 0;
}
}
// go through the fanouts of the object and make sure fanouts have this object as a fanin
Abc_ObjForEachFanout( pObj, pFanout, i )
{
if ( Vec_FanFindEntry( &pFanout->vFanins, pObj->Id ) == -1 )
{
fprintf( stdout, "NodeCheck: Object \"%s\" has fanout ", Abc_ObjName(pObj) );
fprintf( stdout, "\"%s\" but the fanout does not have it as a fanin.\n", Abc_ObjName(pFanout) );
Value = 0;
}
}
// make sure fanins are not duplicated
for ( i = 0; i < pObj->vFanins.nSize; i++ )
for ( k = i + 1; k < pObj->vFanins.nSize; k++ )
if ( pObj->vFanins.pArray[k].iFan == pObj->vFanins.pArray[i].iFan )
{
printf( "Warning: Node %s has", Abc_ObjName(pObj) );
printf( " duplicated fanin %s.\n", Abc_ObjName(Abc_ObjFanin(pObj,k)) );
}
// save time: do not check large fanout lists
if ( pObj->vFanouts.nSize > 20 )
return Value;
// make sure fanouts are not duplicated
for ( i = 0; i < pObj->vFanouts.nSize; i++ )
for ( k = i + 1; k < pObj->vFanouts.nSize; k++ )
if ( pObj->vFanouts.pArray[k].iFan == pObj->vFanouts.pArray[i].iFan )
{
printf( "Warning: Node %s has", Abc_ObjName(pObj) );
printf( " duplicated fanout %s.\n", Abc_ObjName(Abc_ObjFanout(pObj,k)) );
}
return Value;
}
/**Function*************************************************************
Synopsis [Checks the integrity of a net.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
bool Abc_NtkCheckNet( Abc_Ntk_t * pNtk, Abc_Obj_t * pNet )
{
if ( Abc_ObjFaninNum(pNet) == 0 )
{
fprintf( stdout, "NetworkCheck: Net \"%s\" is not driven.\n", Abc_ObjName(pNet) );
return 0;
}
if ( Abc_ObjFaninNum(pNet) > 1 )
{
fprintf( stdout, "NetworkCheck: Net \"%s\" has more than one driver.\n", Abc_ObjName(pNet) );
return 0;
}
return 1;
}
/**Function*************************************************************
Synopsis [Checks the integrity of a node.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
bool Abc_NtkCheckNode( Abc_Ntk_t * pNtk, Abc_Obj_t * pNode )
{
// detect internal nodes that do not have nets
if ( Abc_NtkIsNetlist(pNtk) && Abc_ObjFanoutNum(pNode) == 0 )
{
fprintf( stdout, "Node (id = %d) has no net to drive.\n", pNode->Id );
return 0;
}
// the node should have a function assigned unless it is an AIG
if ( pNode->pData == NULL )
{
fprintf( stdout, "NodeCheck: An internal node \"%s\" does not have a logic function.\n", Abc_ObjName(pNode) );
return 0;
}
// the netlist and SOP logic network should have SOPs
if ( Abc_NtkHasSop(pNtk) )
{
if ( !Abc_SopCheck( pNode->pData, Abc_ObjFaninNum(pNode) ) )
{
fprintf( stdout, "NodeCheck: SOP check for node \"%s\" has failed.\n", Abc_ObjName(pNode) );
return 0;
}
}
else if ( Abc_NtkHasBdd(pNtk) )
{
int nSuppSize = Cudd_SupportSize(pNtk->pManFunc, pNode->pData);
if ( nSuppSize > Abc_ObjFaninNum(pNode) )
{
fprintf( stdout, "NodeCheck: BDD of the node \"%s\" has incorrect support size.\n", Abc_ObjName(pNode) );
return 0;
}
}
else if ( !Abc_NtkHasMapping(pNtk) )
{
assert( 0 );
}
return 1;
}
/**Function*************************************************************
Synopsis [Checks the integrity of a latch.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
bool Abc_NtkCheckLatch( Abc_Ntk_t * pNtk, Abc_Obj_t * pLatch )
{
int Value = 1;
if ( pNtk->vLats->nSize != Abc_NtkLatchNum(pNtk) )
{
fprintf( stdout, "NetworkCheck: Incorrect size of the latch array.\n" );
return 0;
}
// check whether the object is a latch
if ( !Abc_ObjIsLatch(pLatch) )
{
fprintf( stdout, "NodeCheck: Latch \"%s\" is in a latch list but has not latch label.\n", Abc_ObjName(pLatch) );
Value = 0;
}
// make sure the latch has a reasonable return value
if ( (int)pLatch->pData < 0 || (int)pLatch->pData > 2 )
{
fprintf( stdout, "NodeCheck: Latch \"%s\" has incorrect reset value (%d).\n",
Abc_ObjName(pLatch), (int)pLatch->pData );
Value = 0;
}
// make sure the latch has only one fanin
if ( Abc_ObjFaninNum(pLatch) != 1 )
{
fprintf( stdout, "NodeCheck: Latch \"%s\" has wrong number (%d) of fanins.\n", Abc_ObjName(pLatch), Abc_ObjFaninNum(pLatch) );
Value = 0;
}
return Value;
}
/**Function*************************************************************
Synopsis [Compares the PIs of the two networks.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
bool Abc_NtkComparePis( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int fComb )
{
Abc_Obj_t * pObj1;
int i;
if ( Abc_NtkPiNum(pNtk1) != Abc_NtkPiNum(pNtk2) )
{
printf( "Networks have different number of primary inputs.\n" );
return 0;
}
// for each PI of pNet1 find corresponding PI of pNet2 and reorder them
Abc_NtkForEachPi( pNtk1, pObj1, i )
{
if ( strcmp( Abc_ObjName(pObj1), Abc_ObjName(Abc_NtkPi(pNtk2,i)) ) != 0 )
{
printf( "Primary input #%d is different in network 1 ( \"%s\") and in network 2 (\"%s\").\n",
i, Abc_ObjName(pObj1), Abc_ObjName(Abc_NtkPi(pNtk2,i)) );
return 0;
}
}
return 1;
}
/**Function*************************************************************
Synopsis [Compares the POs of the two networks.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
bool Abc_NtkComparePos( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int fComb )
{
Abc_Obj_t * pObj1;
int i;
if ( Abc_NtkPoNum(pNtk1) != Abc_NtkPoNum(pNtk2) )
{
printf( "Networks have different number of primary outputs.\n" );
return 0;
}
// for each PO of pNet1 find corresponding PO of pNet2 and reorder them
Abc_NtkForEachPo( pNtk1, pObj1, i )
{
if ( strcmp( Abc_ObjName(pObj1), Abc_ObjName(Abc_NtkPo(pNtk2,i)) ) != 0 )
{
printf( "Primary output #%d is different in network 1 ( \"%s\") and in network 2 (\"%s\").\n",
i, Abc_ObjName(pObj1), Abc_ObjName(Abc_NtkPo(pNtk2,i)) );
return 0;
}
}
return 1;
}
/**Function*************************************************************
Synopsis [Compares the latches of the two networks.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
bool Abc_NtkCompareLatches( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int fComb )
{
Abc_Obj_t * pObj1;
int i;
if ( !fComb )
return 1;
if ( Abc_NtkLatchNum(pNtk1) != Abc_NtkLatchNum(pNtk2) )
{
printf( "Networks have different number of latches.\n" );
return 0;
}
// for each PI of pNet1 find corresponding PI of pNet2 and reorder them
Abc_NtkForEachLatch( pNtk1, pObj1, i )
{
if ( strcmp( Abc_ObjName(pObj1), Abc_ObjName(Abc_NtkLatch(pNtk2,i)) ) != 0 )
{
printf( "Latch #%d is different in network 1 ( \"%s\") and in network 2 (\"%s\").\n",
i, Abc_ObjName(pObj1), Abc_ObjName(Abc_NtkLatch(pNtk2,i)) );
return 0;
}
}
return 1;
}
/**Function*************************************************************
Synopsis [Compares the signals of the networks.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
bool Abc_NtkCompareSignals( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int fComb )
{
Abc_NtkAlphaOrderSignals( pNtk1, fComb );
Abc_NtkAlphaOrderSignals( pNtk2, fComb );
if ( !Abc_NtkCompareLatches( pNtk1, pNtk2, fComb ) )
return 0;
if ( !Abc_NtkComparePis( pNtk1, pNtk2, fComb ) )
return 0;
if ( !Abc_NtkComparePos( pNtk1, pNtk2, fComb ) )
return 0;
return 1;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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