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/**CFile****************************************************************
FileName [mioUtils.c]
PackageName [MVSIS 1.3: Multi-valued logic synthesis system.]
Synopsis [File reading/writing for technology mapping.]
Author [MVSIS Group]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - September 8, 2003.]
Revision [$Id: mioUtils.c,v 1.6 2004/09/03 18:02:20 satrajit Exp $]
***********************************************************************/
#include "mioInt.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
static void Mio_WriteGate( FILE * pFile, Mio_Gate_t * pGate, int fPrintSops );
static void Mio_WritePin( FILE * pFile, Mio_Pin_t * pPin );
static int Mio_DelayCompare( Mio_Gate_t ** ppG1, Mio_Gate_t ** ppG2 );
static void Mio_DeriveTruthTable_rec( DdNode * bFunc, unsigned uTruthsIn[][2], unsigned uTruthRes[] );
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_LibraryDelete( Mio_Library_t * pLib )
{
Mio_Gate_t * pGate, * pGate2;
if ( pLib == NULL )
return;
// free the bindings of nodes to gates from this library for all networks
Abc_FrameUnmapAllNetworks( Abc_FrameGetGlobalFrame() );
// free the library
ABC_FREE( pLib->pName );
Mio_LibraryForEachGateSafe( pLib, pGate, pGate2 )
Mio_GateDelete( pGate );
Extra_MmFlexStop( pLib->pMmFlex );
Vec_StrFree( pLib->vCube );
if ( pLib->tName2Gate )
st_free_table( pLib->tName2Gate );
if ( pLib->dd )
Cudd_Quit( pLib->dd );
ABC_FREE( pLib->ppGates0 );
ABC_FREE( pLib->ppGatesName );
ABC_FREE( pLib );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_GateDelete( Mio_Gate_t * pGate )
{
Mio_Pin_t * pPin, * pPin2;
ABC_FREE( pGate->pOutName );
ABC_FREE( pGate->pName );
ABC_FREE( pGate->pForm );
if ( pGate->bFunc )
Cudd_RecursiveDeref( pGate->pLib->dd, pGate->bFunc );
Mio_GateForEachPinSafe( pGate, pPin, pPin2 )
Mio_PinDelete( pPin );
ABC_FREE( pGate );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_PinDelete( Mio_Pin_t * pPin )
{
ABC_FREE( pPin->pName );
ABC_FREE( pPin );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Mio_Pin_t * Mio_PinDup( Mio_Pin_t * pPin )
{
Mio_Pin_t * pPinNew;
pPinNew = ABC_ALLOC( Mio_Pin_t, 1 );
*pPinNew = *pPin;
pPinNew->pName = (pPinNew->pName ? Extra_UtilStrsav(pPinNew->pName) : NULL);
pPinNew->pNext = NULL;
return pPinNew;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_WriteLibrary( FILE * pFile, Mio_Library_t * pLib, int fPrintSops )
{
// Mio_Gate_t * pGate;
int i;
fprintf( pFile, "# The genlib library \"%s\".\n", pLib->pName );
// Mio_LibraryForEachGate( pLib, pGate )
// Mio_WriteGate( pFile, pGate, fPrintSops );
for ( i = 0; i < pLib->nGates; i++ )
Mio_WriteGate( pFile, pLib->ppGates0[i], fPrintSops );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_WriteGate( FILE * pFile, Mio_Gate_t * pGate, int fPrintSops )
{
Mio_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 );
// print the pins
if ( fPrintSops )
fprintf( pFile, "%s", pGate->pSop? pGate->pSop : "unspecified\n" );
// Extra_bddPrint( pGate->pLib->dd, pGate->bFunc );
// fprintf( pFile, "\n" );
Mio_GateForEachPin( pGate, pPin )
Mio_WritePin( pFile, pPin );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_WritePin( FILE * pFile, Mio_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 [Collects the set of root gates.]
Description [Only collects the gates with unique functionality,
which have fewer inputs and shorter delay than the given limits.]
SideEffects []
SeeAlso []
***********************************************************************/
Mio_Gate_t ** Mio_CollectRoots( Mio_Library_t * pLib, int nInputs, float tDelay, int fSkipInv, int * pnGates )
{
Mio_Gate_t * pGate;
Mio_Gate_t ** ppGates;
/* st_table * tFuncs; */
/* st_generator * gen; */
DdNode * bFunc;
DdManager * dd;
int nGates, iGate;
dd = Mio_LibraryReadDd( pLib );
nGates = Mio_LibraryReadGateNum( pLib );
/*
// for each functionality select one gate; skip constants and buffers
tFuncs = st_init_table( st_ptrcmp, st_ptrhash );
Mio_LibraryForEachGate( pLib, pGate )
{
bFunc = Mio_GateReadFunc(pGate);
if ( pGate->nInputs > nInputs )
continue;
if ( pGate->dDelayMax > (double)tDelay )
continue;
if ( bFunc == b0 || bFunc == b1 )
continue;
if ( bFunc == dd->vars[0] )
continue;
if ( bFunc == Cudd_Not(dd->vars[0]) && fSkipInv )
continue;
if ( st_is_member( tFuncs, (char *)bFunc ) )
continue;
st_insert( tFuncs, (char *)bFunc, (char *)pGate );
}
// collect the gates into the array
ppGates = ABC_ALLOC( Mio_Gate_t *, nGates );
iGate = 0;
st_foreach_item( tFuncs, gen, (char **)&bFunc, (char **)&pGate )
ppGates[ iGate++ ] = pGate;
assert( iGate <= nGates );
st_free_table( tFuncs );
*/
ppGates = ABC_ALLOC( Mio_Gate_t *, nGates );
iGate = 0;
Mio_LibraryForEachGate( pLib, pGate )
{
bFunc = Mio_GateReadFunc(pGate);
if ( pGate->nInputs > nInputs )
continue;
if ( pGate->dDelayMax > (double)tDelay )
continue;
if ( bFunc == b0 || bFunc == b1 )
continue;
if ( bFunc == dd->vars[0] )
continue;
if ( bFunc == Cudd_Not(dd->vars[0]) && fSkipInv )
continue;
assert( iGate < nGates );
ppGates[ iGate++ ] = pGate;
}
if ( iGate > 0 )
{
// sort the gates by delay
qsort( (void *)ppGates, iGate, sizeof(Mio_Gate_t *),
(int (*)(const void *, const void *)) Mio_DelayCompare );
assert( Mio_DelayCompare( ppGates, ppGates + iGate - 1 ) <= 0 );
}
if ( pnGates )
*pnGates = iGate;
return ppGates;
}
/**Function*************************************************************
Synopsis [Compares the max delay of two gates.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Mio_DelayCompare( Mio_Gate_t ** ppG1, Mio_Gate_t ** ppG2 )
{
if ( (*ppG1)->dDelayMax < (*ppG2)->dDelayMax )
return -1;
if ( (*ppG1)->dDelayMax > (*ppG2)->dDelayMax )
return 1;
return 0;
}
/**Function*************************************************************
Synopsis [Derives the truth table of the gate.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_DeriveTruthTable( Mio_Gate_t * pGate, unsigned uTruthsIn[][2], int nSigns, int nInputs, unsigned uTruthRes[] )
{
Mio_DeriveTruthTable_rec( pGate->bFunc, uTruthsIn, uTruthRes );
}
/**Function*************************************************************
Synopsis [Recursively derives the truth table of the gate.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_DeriveTruthTable_rec( DdNode * bFunc, unsigned uTruthsIn[][2], unsigned uTruthRes[] )
{
unsigned uTruthsCof0[2];
unsigned uTruthsCof1[2];
// complement the resulting truth table, if the function is complemented
if ( Cudd_IsComplement(bFunc) )
{
Mio_DeriveTruthTable_rec( Cudd_Not(bFunc), uTruthsIn, uTruthRes );
uTruthRes[0] = ~uTruthRes[0];
uTruthRes[1] = ~uTruthRes[1];
return;
}
// if the function is constant 1, return the constant 1 truth table
if ( bFunc->index == CUDD_CONST_INDEX )
{
uTruthRes[0] = MIO_FULL;
uTruthRes[1] = MIO_FULL;
return;
}
// solve the problem for both cofactors
Mio_DeriveTruthTable_rec( cuddE(bFunc), uTruthsIn, uTruthsCof0 );
Mio_DeriveTruthTable_rec( cuddT(bFunc), uTruthsIn, uTruthsCof1 );
// derive the resulting truth table using the input truth tables
uTruthRes[0] = (uTruthsCof0[0] & ~uTruthsIn[bFunc->index][0]) |
(uTruthsCof1[0] & uTruthsIn[bFunc->index][0]);
uTruthRes[1] = (uTruthsCof0[1] & ~uTruthsIn[bFunc->index][1]) |
(uTruthsCof1[1] & uTruthsIn[bFunc->index][1]);
}
/**Function*************************************************************
Synopsis [Derives the truth table of the root of the gate.]
Description [Given the truth tables of the leaves of the gate,
this procedure derives the truth table of the root.]
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_DeriveTruthTable2( Mio_Gate_t * pGate, unsigned uTruthsIn[][2], int nTruths, int nInputs, unsigned uTruthRes[] )
{
unsigned uSignCube[2];
int i, nFanins;
char * pCube;
// make sure that the number of input truth tables in equal to the number of gate inputs
assert( pGate->nInputs == nTruths );
assert( nInputs < 7 );
nFanins = Abc_SopGetVarNum( pGate->pSop );
assert( nFanins == nInputs );
// clean the resulting truth table
uTruthRes[0] = 0;
uTruthRes[1] = 0;
if ( nInputs < 6 )
{
// for ( c = 0; *(pCube = pGate->pSop + c * (nFanins + 3)); c++ )
Abc_SopForEachCube( pGate->pSop, nFanins, pCube )
{
// add the clause
uSignCube[0] = MIO_FULL;
for ( i = 0; i < nFanins; i++ )
{
if ( pCube[i] == '0' )
uSignCube[0] &= ~uTruthsIn[i][0];
else if ( pCube[i] == '1' )
uSignCube[0] &= uTruthsIn[i][0];
}
}
if ( nInputs < 5 )
uTruthRes[0] &= MIO_MASK(1<<nInputs);
}
else
{
// consider the case when two unsigneds should be used
// for ( c = 0; *(pCube = pGate->pSop + c * (nFanins + 3)); c++ )
Abc_SopForEachCube( pGate->pSop, nFanins, pCube )
{
uSignCube[0] = MIO_FULL;
uSignCube[1] = MIO_FULL;
for ( i = 0; i < nFanins; i++ )
{
if ( pCube[i] == '0' )
{
uSignCube[0] &= ~uTruthsIn[i][0];
uSignCube[1] &= ~uTruthsIn[i][1];
}
else if ( pCube[i] == '1' )
{
uSignCube[0] &= uTruthsIn[i][0];
uSignCube[1] &= uTruthsIn[i][1];
}
}
uTruthRes[0] |= uSignCube[0];
uTruthRes[1] |= uSignCube[1];
}
}
}
/**Function*************************************************************
Synopsis [Derives the area and delay of the root of the gate.]
Description [Array of the resulting delays should be initialized
to the (negative) SUPER_NO_VAR value.]
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_DeriveGateDelays( Mio_Gate_t * pGate,
float ** ptPinDelays, int nPins, int nInputs, float tDelayZero,
float * ptDelaysRes, float * ptPinDelayMax )
{
Mio_Pin_t * pPin;
float Delay, DelayMax;
int i, k;
assert( pGate->nInputs == nPins );
// set all the delays to the unused delay
for ( i = 0; i < nInputs; i++ )
ptDelaysRes[i] = tDelayZero;
// compute the delays for each input and the max delay at the same time
DelayMax = 0;
for ( i = 0; i < nInputs; i++ )
{
for ( k = 0, pPin = pGate->pPins; pPin; pPin = pPin->pNext, k++ )
{
if ( ptPinDelays[k][i] < 0 )
continue;
Delay = ptPinDelays[k][i] + (float)pPin->dDelayBlockMax;
if ( ptDelaysRes[i] < Delay )
ptDelaysRes[i] = Delay;
}
if ( k != nPins )
{
printf ("DEBUG: problem gate is %s\n", Mio_GateReadName( pGate ));
}
assert( k == nPins );
if ( DelayMax < ptDelaysRes[i] )
DelayMax = ptDelaysRes[i];
}
*ptPinDelayMax = DelayMax;
}
/**Function*************************************************************
Synopsis [Creates a pseudo-gate.]
Description [The pseudo-gate is a N-input gate with all info set to 0.]
SideEffects []
SeeAlso []
***********************************************************************/
Mio_Gate_t * Mio_GateCreatePseudo( int nInputs )
{
Mio_Gate_t * pGate;
Mio_Pin_t * pPin;
int i;
// allocate the gate structure
pGate = ABC_ALLOC( Mio_Gate_t, 1 );
memset( pGate, 0, sizeof(Mio_Gate_t) );
pGate->nInputs = nInputs;
// create pins
for ( i = 0; i < nInputs; i++ )
{
pPin = ABC_ALLOC( Mio_Pin_t, 1 );
memset( pPin, 0, sizeof(Mio_Pin_t) );
pPin->pNext = pGate->pPins;
pGate->pPins = pPin;
}
return pGate;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
|
