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abc/src/map/mio/mioUtils.c

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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 <math.h>
#include "mioInt.h"
#include "base/main/main.h"
#include "exp.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// 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 );
Mem_FlexStop( pLib->pMmFlex, 0 );
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;
if ( pGate->nInputs > 6 )
ABC_FREE( pGate->pTruth );
Vec_IntFreeP( &pGate->vExpr );
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 ? Mio_UtilStrsav(pPinNew->pName) : NULL);
pPinNew->pNext = NULL;
return pPinNew;
}
/**Function*************************************************************
Synopsis [Check if pin characteristics are the same.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Mio_CheckPins( Mio_Pin_t * pPin1, Mio_Pin_t * pPin2 )
{
if ( pPin1 == NULL || pPin2 == NULL )
return 1;
if ( pPin1->dLoadInput != pPin2->dLoadInput )
return 0;
if ( pPin1->dLoadMax != pPin2->dLoadMax )
return 0;
if ( pPin1->dDelayBlockRise != pPin2->dDelayBlockRise )
return 0;
if ( pPin1->dDelayFanoutRise != pPin2->dDelayFanoutRise )
return 0;
if ( pPin1->dDelayBlockFall != pPin2->dDelayBlockFall )
return 0;
if ( pPin1->dDelayFanoutFall != pPin2->dDelayFanoutFall )
return 0;
return 1;
}
int Mio_CheckGates( Mio_Library_t * pLib )
{
Mio_Gate_t * pGate;
Mio_Pin_t * pPin0 = NULL, * pPin = NULL;
Mio_LibraryForEachGate( pLib, pGate )
Mio_GateForEachPin( pGate, pPin )
if ( Mio_CheckPins( pPin0, pPin ) )
pPin0 = pPin;
else
return 0;
return 1;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_WritePin( FILE * pFile, Mio_Pin_t * pPin, int NameLen, int fAllPins )
{
char * pPhaseNames[10] = { "UNKNOWN", "INV", "NONINV" };
if ( fAllPins )
fprintf( pFile, "PIN * " );
else
fprintf( pFile, "\n PIN %*s ", NameLen, pPin->pName );
fprintf( pFile, "%7s ", pPhaseNames[pPin->Phase] );
fprintf( pFile, "%3d ", (int)pPin->dLoadInput );
fprintf( pFile, "%3d ", (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 );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_WriteGate( FILE * pFile, Mio_Gate_t * pGate, int GateLen, int NameLen, int FormLen, int fPrintSops, int fAllPins )
{
char Buffer[5000];
Mio_Pin_t * pPin;
assert( NameLen+FormLen+2 < 5000 );
sprintf( Buffer, "%s=%s;", pGate->pOutName, pGate->pForm );
fprintf( pFile, "GATE %-*s ", GateLen, pGate->pName );
fprintf( pFile, "%8.2f ", pGate->dArea );
fprintf( pFile, "%-*s ", Abc_MinInt(NameLen+FormLen+2, 30), Buffer );
// print the pins
if ( fPrintSops )
fprintf( pFile, "%s", pGate->pSop? pGate->pSop : "unspecified\n" );
if ( fAllPins && pGate->pPins ) // equal pins
Mio_WritePin( pFile, pGate->pPins, NameLen, 1 );
else // different pins
Mio_GateForEachPin( pGate, pPin )
Mio_WritePin( pFile, pPin, NameLen, 0 );
fprintf( pFile, "\n" );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_WriteLibrary( FILE * pFile, Mio_Library_t * pLib, int fPrintSops )
{
Mio_Gate_t * pGate;
Mio_Pin_t * pPin;
int i, GateLen = 0, NameLen = 0, FormLen = 0;
int fAllPins = Mio_CheckGates( pLib );
Mio_LibraryForEachGate( pLib, pGate )
{
GateLen = Abc_MaxInt( GateLen, strlen(pGate->pName) );
NameLen = Abc_MaxInt( NameLen, strlen(pGate->pOutName) );
FormLen = Abc_MaxInt( FormLen, strlen(pGate->pForm) );
Mio_GateForEachPin( pGate, pPin )
NameLen = Abc_MaxInt( NameLen, strlen(pPin->pName) );
}
fprintf( pFile, "# The genlib library \"%s\".\n", pLib->pName );
for ( i = 0; i < pLib->nGates; i++ )
Mio_WriteGate( pFile, pLib->ppGates0[i], GateLen, NameLen, FormLen, fPrintSops, fAllPins );
}
/**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 [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, int fVerbose )
{
Mio_Gate_t * pGate;
Mio_Gate_t ** ppGates;
int i, nGates, iGate;
nGates = Mio_LibraryReadGateNum( pLib );
ppGates = ABC_ALLOC( Mio_Gate_t *, nGates );
iGate = 0;
// for each functionality, select gate with the smallest area
// if equal areas, select gate with lexicographically smaller name
Mio_LibraryForEachGate( pLib, pGate )
{
if ( pGate->nInputs > nInputs )
continue;
if ( tDelay > 0.0 && pGate->dDelayMax > (double)tDelay )
continue;
if ( pGate->uTruth == 0 || pGate->uTruth == ~0 )
continue;
if ( pGate->uTruth == 0xAAAAAAAAAAAAAAAA )
continue;
if ( pGate->uTruth == ~0xAAAAAAAAAAAAAAAA && fSkipInv )
continue;
if ( pGate->pTwin ) // skip multi-output gates for now
continue;
// check if the gate with this functionality already exists
for ( i = 0; i < iGate; i++ )
if ( ppGates[i]->uTruth == pGate->uTruth )
{
if ( ppGates[i]->dArea > pGate->dArea ||
(ppGates[i]->dArea == pGate->dArea && strcmp(ppGates[i]->pName, pGate->pName) > 0) )
ppGates[i] = pGate;
break;
}
if ( i < iGate )
continue;
assert( iGate < nGates );
ppGates[ iGate++ ] = pGate;
if ( fVerbose )
printf( "Selected gate %3d: %-20s A = %7.2f D = %7.2f %3s = %-s\n",
iGate+1, pGate->pName, pGate->dArea, pGate->dDelayMax, pGate->pOutName, pGate->pForm );
}
// sort by delay
if ( iGate > 0 )
{
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 [Derives the truth table of the gate.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
word Mio_DeriveTruthTable6( Mio_Gate_t * pGate )
{
static unsigned uTruths6[6][2] = {
{ 0xAAAAAAAA, 0xAAAAAAAA },
{ 0xCCCCCCCC, 0xCCCCCCCC },
{ 0xF0F0F0F0, 0xF0F0F0F0 },
{ 0xFF00FF00, 0xFF00FF00 },
{ 0xFFFF0000, 0xFFFF0000 },
{ 0x00000000, 0xFFFFFFFF }
};
unsigned uTruthRes[2];
assert( pGate->nInputs <= 6 );
Mio_DeriveTruthTable( pGate, uTruths6, pGate->nInputs, 6, uTruthRes );
return *((word *)uTruthRes);
}
#if 0
/**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 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 );
}
#endif
/**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[] )
{
word uRes, uFanins[6];
int i;
assert( pGate->nInputs == nSigns );
for ( i = 0; i < nSigns; i++ )
uFanins[i] = (((word)uTruthsIn[i][1]) << 32) | (word)uTruthsIn[i][0];
uRes = Exp_Truth6( nSigns, pGate->vExpr, (word *)uFanins );
uTruthRes[0] = uRes & 0xFFFFFFFF;
uTruthRes[1] = uRes >> 32;
}
/**Function*************************************************************
Synopsis [Reads the number of variables in the cover.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Mio_SopGetVarNum( char * pSop )
{
char * pCur;
for ( pCur = pSop; *pCur != '\n'; pCur++ )
if ( *pCur == 0 )
return -1;
return pCur - pSop - 2;
}
/**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 = Mio_SopGetVarNum( pGate->pSop );
assert( nFanins == nInputs );
// clean the resulting truth table
uTruthRes[0] = 0;
uTruthRes[1] = 0;
if ( nInputs < 6 )
{
// Abc_SopForEachCube( pGate->pSop, nFanins, pCube )
for ( pCube = pGate->pSop; *pCube; pCube += (nFanins) + 3 )
{
// 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
// Abc_SopForEachCube( pGate->pSop, nFanins, pCube )
for ( pCube = pGate->pSop; *pCube; pCube += (nFanins) + 3 )
{
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;
}
/**Function*************************************************************
Synopsis [Adds constant value to all delay values.]
Description [The pseudo-gate is a N-input gate with all info set to 0.]
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_LibraryShiftDelay( Mio_Library_t * pLib, double Shift )
{
Mio_Gate_t * pGate;
Mio_Pin_t * pPin;
Mio_LibraryForEachGate( pLib, pGate )
{
pGate->dDelayMax += Shift;
Mio_GateForEachPin( pGate, pPin )
{
pPin->dDelayBlockRise += Shift;
pPin->dDelayBlockFall += Shift;
pPin->dDelayBlockMax += Shift;
}
}
}
/**Function*************************************************************
Synopsis [Multiply areas/delays by values proportional to fanin count.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_LibraryMultiArea( Mio_Library_t * pLib, double Multi )
{
Mio_Gate_t * pGate;
Mio_LibraryForEachGate( pLib, pGate )
{
if ( pGate->nInputs < 2 )
continue;
// printf( "Before %8.3f ", pGate->dArea );
pGate->dArea *= pow( pGate->nInputs, Multi );
// printf( "After %8.3f Inputs = %d. Factor = %8.3f\n", pGate->dArea, pGate->nInputs, pow( pGate->nInputs, Multi ) );
}
}
void Mio_LibraryMultiDelay( Mio_Library_t * pLib, double Multi )
{
Mio_Gate_t * pGate;
Mio_Pin_t * pPin;
Mio_LibraryForEachGate( pLib, pGate )
{
if ( pGate->nInputs < 2 )
continue;
// printf( "Before %8.3f ", pGate->dDelayMax );
pGate->dDelayMax *= pow( pGate->nInputs, Multi );
// printf( "After %8.3f Inputs = %d. Factor = %8.3f\n", pGate->dDelayMax, pGate->nInputs, pow( pGate->nInputs, Multi ) );
Mio_GateForEachPin( pGate, pPin )
{
pPin->dDelayBlockRise *= pow( pGate->nInputs, Multi );
pPin->dDelayBlockFall *= pow( pGate->nInputs, Multi );
pPin->dDelayBlockMax *= pow( pGate->nInputs, Multi );
}
}
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
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