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/**CFile****************************************************************
FileName [simUtils.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Network and node package.]
Synopsis [Various simulation utilities.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: simUtils.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "abc.h"
#include "sim.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Allocates simulation information for all nodes.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Ptr_t * Sim_UtilInfoAlloc( int nSize, int nWords, bool fClean )
{
Vec_Ptr_t * vInfo;
int i;
vInfo = Vec_PtrAlloc( nSize );
vInfo->pArray[0] = ALLOC( unsigned, nSize * nWords );
if ( fClean )
memset( vInfo->pArray[0], 0, sizeof(unsigned) * nSize * nWords );
for ( i = 1; i < nSize; i++ )
vInfo->pArray[i] = ((unsigned *)vInfo->pArray[i-1]) + nWords;
vInfo->nSize = nSize;
return vInfo;
}
/**Function*************************************************************
Synopsis [Allocates simulation information for all nodes.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sim_UtilInfoFree( Vec_Ptr_t * p )
{
free( p->pArray[0] );
Vec_PtrFree( p );
}
/**Function*************************************************************
Synopsis [Adds the second supp-info the first.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sim_UtilInfoAdd( unsigned * pInfo1, unsigned * pInfo2, int nWords )
{
int w;
for ( w = 0; w < nWords; w++ )
pInfo1[w] |= pInfo2[w];
}
/**Function*************************************************************
Synopsis [Returns the positions where pInfo2 is 1 while pInfo1 is 0.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sim_UtilInfoDetectDiffs( unsigned * pInfo1, unsigned * pInfo2, int nWords, Vec_Int_t * vDiffs )
{
int w, b;
unsigned uMask;
vDiffs->nSize = 0;
for ( w = 0; w < nWords; w++ )
if ( uMask = (pInfo2[w] ^ pInfo1[w]) )
for ( b = 0; b < 32; b++ )
if ( uMask & (1 << b) )
Vec_IntPush( vDiffs, 32*w + b );
}
/**Function*************************************************************
Synopsis [Returns the positions where pInfo2 is 1 while pInfo1 is 0.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sim_UtilInfoDetectNews( unsigned * pInfo1, unsigned * pInfo2, int nWords, Vec_Int_t * vDiffs )
{
int w, b;
unsigned uMask;
vDiffs->nSize = 0;
for ( w = 0; w < nWords; w++ )
if ( uMask = (pInfo2[w] & ~pInfo1[w]) )
for ( b = 0; b < 32; b++ )
if ( uMask & (1 << b) )
Vec_IntPush( vDiffs, 32*w + b );
}
/**Function*************************************************************
Synopsis [Computes structural supports.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sim_UtilComputeStrSupp( Sim_Man_t * p )
{
Abc_Obj_t * pNode;
unsigned * pSimmNode, * pSimmNode1, * pSimmNode2;
int i, k;
// assign the structural support to the PIs
Abc_NtkForEachCi( p->pNtk, pNode, i )
Sim_SuppStrSetVar( p, pNode, i );
// derive the structural supports of the internal nodes
Abc_NtkForEachNode( p->pNtk, pNode, i )
{
if ( Abc_NodeIsConst(pNode) )
continue;
pSimmNode = p->vSuppStr->pArray[ pNode->Id ];
pSimmNode1 = p->vSuppStr->pArray[ Abc_ObjFaninId0(pNode) ];
pSimmNode2 = p->vSuppStr->pArray[ Abc_ObjFaninId1(pNode) ];
for ( k = 0; k < p->nSuppWords; k++ )
pSimmNode[k] = pSimmNode1[k] | pSimmNode2[k];
}
// set the structural supports of the PO nodes
Abc_NtkForEachCo( p->pNtk, pNode, i )
{
pSimmNode = p->vSuppStr->pArray[ pNode->Id ];
pSimmNode1 = p->vSuppStr->pArray[ Abc_ObjFaninId0(pNode) ];
for ( k = 0; k < p->nSuppWords; k++ )
pSimmNode[k] = pSimmNode1[k];
}
}
/**Function*************************************************************
Synopsis [Assigns random simulation info to the PIs.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sim_UtilAssignRandom( Sim_Man_t * p )
{
Abc_Obj_t * pNode;
unsigned * pSimInfo;
int i, k;
// assign the random/systematic simulation info to the PIs
Abc_NtkForEachCi( p->pNtk, pNode, i )
{
pSimInfo = p->vSim0->pArray[pNode->Id];
for ( k = 0; k < p->nSimWords; k++ )
pSimInfo[k] = SIM_RANDOM_UNSIGNED;
}
}
/**Function*************************************************************
Synopsis [Flips the simulation info of the node.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sim_UtilFlipSimInfo( Sim_Man_t * p, Abc_Obj_t * pNode )
{
unsigned * pSimInfo1, * pSimInfo2;
int k;
pSimInfo1 = p->vSim1->pArray[pNode->Id];
pSimInfo2 = p->vSim0->pArray[pNode->Id];
for ( k = 0; k < p->nSimWords; k++ )
pSimInfo2[k] = ~pSimInfo1[k];
}
/**Function*************************************************************
Synopsis [Returns 1 if the simulation infos are equal.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
bool Sim_UtilCompareSimInfo( Sim_Man_t * p, Abc_Obj_t * pNode )
{
unsigned * pSimInfo1, * pSimInfo2;
int k;
pSimInfo1 = p->vSim1->pArray[pNode->Id];
pSimInfo2 = p->vSim0->pArray[pNode->Id];
for ( k = 0; k < p->nSimWords; k++ )
if ( pSimInfo2[k] != pSimInfo1[k] )
return 0;
return 1;
}
/**Function*************************************************************
Synopsis [Simulates the internal nodes.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sim_UtilSimulate( Sim_Man_t * p, bool fType )
{
Abc_Obj_t * pNode;
int i;
// simulate the internal nodes
Abc_NtkForEachNode( p->pNtk, pNode, i )
Sim_UtilSimulateNode( p, pNode, fType, fType, fType );
// assign simulation info of the CO nodes
Abc_NtkForEachCo( p->pNtk, pNode, i )
Sim_UtilSimulateNode( p, pNode, fType, fType, fType );
}
/**Function*************************************************************
Synopsis [Simulates one node.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sim_UtilSimulateNode( Sim_Man_t * p, Abc_Obj_t * pNode, bool fType, bool fType1, bool fType2 )
{
unsigned * pSimmNode, * pSimmNode1, * pSimmNode2;
int k, fComp1, fComp2;
// simulate the internal nodes
if ( Abc_ObjIsNode(pNode) )
{
if ( Abc_NodeIsConst(pNode) )
return;
if ( fType )
pSimmNode = p->vSim1->pArray[ pNode->Id ];
else
pSimmNode = p->vSim0->pArray[ pNode->Id ];
if ( fType1 )
pSimmNode1 = p->vSim1->pArray[ Abc_ObjFaninId0(pNode) ];
else
pSimmNode1 = p->vSim0->pArray[ Abc_ObjFaninId0(pNode) ];
if ( fType2 )
pSimmNode2 = p->vSim1->pArray[ Abc_ObjFaninId1(pNode) ];
else
pSimmNode2 = p->vSim0->pArray[ Abc_ObjFaninId1(pNode) ];
fComp1 = Abc_ObjFaninC0(pNode);
fComp2 = Abc_ObjFaninC1(pNode);
if ( fComp1 && fComp2 )
for ( k = 0; k < p->nSimWords; k++ )
pSimmNode[k] = ~pSimmNode1[k] & ~pSimmNode2[k];
else if ( fComp1 && !fComp2 )
for ( k = 0; k < p->nSimWords; k++ )
pSimmNode[k] = ~pSimmNode1[k] & pSimmNode2[k];
else if ( !fComp1 && fComp2 )
for ( k = 0; k < p->nSimWords; k++ )
pSimmNode[k] = pSimmNode1[k] & ~pSimmNode2[k];
else // if ( fComp1 && fComp2 )
for ( k = 0; k < p->nSimWords; k++ )
pSimmNode[k] = pSimmNode1[k] & pSimmNode2[k];
}
else
{
assert( Abc_ObjFaninNum(pNode) == 1 );
if ( fType )
pSimmNode = p->vSim1->pArray[ pNode->Id ];
else
pSimmNode = p->vSim0->pArray[ pNode->Id ];
if ( fType1 )
pSimmNode1 = p->vSim1->pArray[ Abc_ObjFaninId0(pNode) ];
else
pSimmNode1 = p->vSim0->pArray[ Abc_ObjFaninId0(pNode) ];
fComp1 = Abc_ObjFaninC0(pNode);
if ( fComp1 )
for ( k = 0; k < p->nSimWords; k++ )
pSimmNode[k] = ~pSimmNode1[k];
else
for ( k = 0; k < p->nSimWords; k++ )
pSimmNode[k] = pSimmNode1[k];
}
}
/**Function*************************************************************
Synopsis [Returns 1 if the simulation infos are equal.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Sim_UtilCountSuppSizes( Sim_Man_t * p, int fStruct )
{
Abc_Obj_t * pNode, * pNodeCi;
int i, v, Counter;
Counter = 0;
if ( fStruct )
{
Abc_NtkForEachCo( p->pNtk, pNode, i )
Abc_NtkForEachCi( p->pNtk, pNodeCi, v )
Counter += Sim_SuppStrHasVar( p, pNode, v );
}
else
{
Abc_NtkForEachCo( p->pNtk, pNode, i )
Abc_NtkForEachCi( p->pNtk, pNodeCi, v )
Counter += Sim_SuppFunHasVar( p, i, v );
}
return Counter;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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