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abc/src/map/amap/amapLib.c
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/**CFile****************************************************************
FileName [amapLib.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Technology mapper for standard cells.]
Synopsis [Standard-cell library.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: amapLib.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "amapInt.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Allocs a library.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Amap_Lib_t * Amap_LibAlloc()
{
Amap_Lib_t * p;
p = (Amap_Lib_t *)ABC_ALLOC( Amap_Lib_t, 1 );
memset( p, 0, sizeof(Amap_Lib_t) );
p->vGates = Vec_PtrAlloc( 100 );
p->pMemGates = Aig_MmFlexStart();
p->pMemSet = Aig_MmFlexStart();
return p;
}
/**Function*************************************************************
Synopsis [Deallocs a library.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Amap_LibFree( Amap_Lib_t * p )
{
if ( p == NULL )
return;
if ( p->vSelect )
Vec_PtrFree( p->vSelect );
if ( p->vSorted )
Vec_PtrFree( p->vSorted );
if ( p->vGates )
Vec_PtrFree( p->vGates );
if ( p->vRules )
Vec_VecFree( (Vec_Vec_t *)p->vRules );
if ( p->vRulesX )
Vec_VecFree( (Vec_Vec_t *)p->vRulesX );
if ( p->vRules3 )
Vec_IntFree( p->vRules3 );
Aig_MmFlexStop( p->pMemGates, 0 );
Aig_MmFlexStop( p->pMemSet, 0 );
ABC_FREE( p->pRules );
ABC_FREE( p->pRulesX );
ABC_FREE( p->pNodes );
ABC_FREE( p->pName );
ABC_FREE( p );
}
/**Function*************************************************************
Synopsis [Returns the largest gate size.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Amap_LibNumPinsMax( Amap_Lib_t * p )
{
Amap_Gat_t * pGate;
int i, Counter = 0;
Amap_LibForEachGate( p, pGate, i )
if ( Counter < (int)pGate->nPins )
Counter = pGate->nPins;
return Counter;
}
/**Function*************************************************************
Synopsis [Writes one pin.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Amap_LibWritePin( FILE * pFile, Amap_Pin_t * pPin )
{
char * pPhaseNames[10] = { "UNKNOWN", "INV", "NONINV" };
fprintf( pFile, " PIN " );
fprintf( pFile, "%9s ", pPin->pName );
fprintf( pFile, "%10s ", pPhaseNames[pPin->Phase] );
fprintf( pFile, "%6d ", (int)pPin->dLoadInput );
fprintf( pFile, "%6d ", (int)pPin->dLoadMax );
fprintf( pFile, "%6.2f ", pPin->dDelayBlockRise );
fprintf( pFile, "%6.2f ", pPin->dDelayFanoutRise );
fprintf( pFile, "%6.2f ", pPin->dDelayBlockFall );
fprintf( pFile, "%6.2f", pPin->dDelayFanoutFall );
fprintf( pFile, "\n" );
}
/**Function*************************************************************
Synopsis [Writes one gate.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Amap_LibWriteGate( FILE * pFile, Amap_Gat_t * pGate, int fPrintDsd )
{
Amap_Pin_t * pPin;
fprintf( pFile, "GATE " );
fprintf( pFile, "%12s ", pGate->pName );
fprintf( pFile, "%10.2f ", pGate->dArea );
fprintf( pFile, "%s=%s;\n", pGate->pOutName, pGate->pForm );
if ( fPrintDsd )
{
if ( pGate->pFunc == NULL )
printf( "Truth table is not available.\n" );
else
Kit_DsdPrintFromTruth( pGate->pFunc, pGate->nPins );
}
Amap_GateForEachPin( pGate, pPin )
Amap_LibWritePin( pFile, pPin );
}
/**Function*************************************************************
Synopsis [Writes library.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Amap_LibWrite( FILE * pFile, Amap_Lib_t * pLib, int fPrintDsd )
{
Amap_Gat_t * pGate;
int i;
fprintf( pFile, "# The genlib library \"%s\".\n", pLib->pName );
Amap_LibForEachGate( pLib, pGate, i )
Amap_LibWriteGate( pFile, pGate, fPrintDsd );
}
/**Function*************************************************************
Synopsis [Compares two gates by area.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Amap_LibCompareGatesByArea( Amap_Gat_t ** pp1, Amap_Gat_t ** pp2 )
{
double Diff = (*pp1)->dArea - (*pp2)->dArea;
if ( Diff < 0.0 )
return -1;
if ( Diff > 0.0 )
return 1;
return 0;
}
/**Function*************************************************************
Synopsis [Compares gates by area.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Ptr_t * Amap_LibSortGatesByArea( Amap_Lib_t * pLib )
{
Vec_Ptr_t * vSorted;
vSorted = Vec_PtrDup( pLib->vGates );
qsort( (void *)Vec_PtrArray(vSorted), Vec_PtrSize(vSorted), sizeof(void *),
(int (*)(const void *, const void *)) Amap_LibCompareGatesByArea );
return vSorted;
}
/**Function*************************************************************
Synopsis [Finds min-area gate with the given function.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Amap_Gat_t * Amap_LibFindGate( Amap_Lib_t * p, unsigned uTruth )
{
Amap_Gat_t * pGate;
int i;
Vec_PtrForEachEntry( Amap_Gat_t *, p->vSorted, pGate, i )
if ( pGate->nPins <= 5 && pGate->pFunc[0] == uTruth )
return pGate;
return NULL;
}
/**Function*************************************************************
Synopsis [Selects gates useful for area-only mapping.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Ptr_t * Amap_LibSelectGates( Amap_Lib_t * p, int fVerbose )
{
Vec_Ptr_t * vSelect;
Amap_Gat_t * pGate, * pGate2;
int i, k;//, clk = Abc_Clock();
p->pGate0 = Amap_LibFindGate( p, 0 );
p->pGate1 = Amap_LibFindGate( p, ~0 );
p->pGateBuf = Amap_LibFindGate( p, 0xAAAAAAAA );
p->pGateInv = Amap_LibFindGate( p, ~0xAAAAAAAA );
vSelect = Vec_PtrAlloc( 100 );
Vec_PtrForEachEntry( Amap_Gat_t *, p->vSorted, pGate, i )
{
if ( pGate->pFunc == NULL || pGate->pTwin != NULL )
continue;
Vec_PtrForEachEntryStop( Amap_Gat_t *, p->vSorted, pGate2, k, i )
{
if ( pGate2->pFunc == NULL || pGate2->pTwin != NULL )
continue;
if ( pGate2->nPins != pGate->nPins )
continue;
if ( !memcmp( pGate2->pFunc, pGate->pFunc, sizeof(unsigned) * Abc_TruthWordNum(pGate->nPins) ) )
break;
}
if ( k < i )
continue;
Vec_PtrPush( vSelect, pGate );
}
return vSelect;
}
/**Function*************************************************************
Synopsis [Selects gates useful for area-only mapping.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Amap_LibPrintSelectedGates( Amap_Lib_t * p, int fAllGates )
{
Vec_Ptr_t * vArray;
Amap_Gat_t * pGate;
int i;
vArray = fAllGates? p->vGates : p->vSelect;
Vec_PtrForEachEntry( Amap_Gat_t *, vArray, pGate, i )
{
printf( "%3d :%12s %d %9.2f ", i, pGate->pName, pGate->nPins, pGate->dArea );
printf( "%4s=%40s ", pGate->pOutName, pGate->pForm );
printf( "DSD: " );
Kit_DsdPrintFromTruth( pGate->pFunc, pGate->nPins );
printf( "\n" );
}
}
/**Function*************************************************************
Synopsis [Parses equations for the gates.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Amap_Lib_t * Amap_LibReadAndPrepare( char * pFileName, char * pBuffer, int fVerbose, int fVeryVerbose )
{
Amap_Lib_t * p;
abctime clk = Abc_Clock();
if ( pBuffer == NULL )
p = Amap_LibReadFile( pFileName, fVerbose );
else
{
p = Amap_LibReadBuffer( pBuffer, fVerbose );
if ( p )
p->pName = Abc_UtilStrsav( pFileName );
}
if ( fVerbose )
printf( "Read %d gates from file \"%s\".\n", Vec_PtrSize(p->vGates), pFileName );
if ( p == NULL )
return NULL;
if ( !Amap_LibParseEquations( p, fVerbose ) )
{
Amap_LibFree( p );
return NULL;
}
p->vSorted = Amap_LibSortGatesByArea( p );
p->vSelect = Amap_LibSelectGates( p, fVerbose );
if ( fVerbose )
{
printf( "Selected %d functionally unique gates. ", Vec_PtrSize(p->vSelect) );
ABC_PRT( "Time", Abc_Clock() - clk );
// Amap_LibPrintSelectedGates( p, 0 );
}
clk = Abc_Clock();
Amap_LibCreateRules( p, fVeryVerbose );
if ( fVerbose )
{
printf( "Created %d rules and %d matches. ", p->nNodes, p->nSets );
ABC_PRT( "Time", Abc_Clock() - clk );
}
return p;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
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