diff options
Diffstat (limited to 'abc70930/src/map/mio/mioFunc.c')
| -rw-r--r-- | abc70930/src/map/mio/mioFunc.c | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/abc70930/src/map/mio/mioFunc.c b/abc70930/src/map/mio/mioFunc.c new file mode 100644 index 00000000..21a078f9 --- /dev/null +++ b/abc70930/src/map/mio/mioFunc.c @@ -0,0 +1,268 @@ +/**CFile**************************************************************** + + FileName [mioFunc.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: mioFunc.c,v 1.4 2004/06/28 14:20:25 alanmi Exp $] + +***********************************************************************/ + +#include "mioInt.h" +#include "parse.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +// these symbols (and no other) can appear in the formulas +#define MIO_SYMB_AND '*' +#define MIO_SYMB_OR '+' +#define MIO_SYMB_NOT '!' +#define MIO_SYMB_AFTNOT '\'' +#define MIO_SYMB_OPEN '(' +#define MIO_SYMB_CLOSE ')' + +static int Mio_GateParseFormula( Mio_Gate_t * pGate ); +static int Mio_GateCollectNames( char * pFormula, char * pPinNames[] ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Deriving the functionality of the gates.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Mio_LibraryParseFormulas( Mio_Library_t * pLib ) +{ + Mio_Gate_t * pGate; + + // count the gates + pLib->nGates = 0; + Mio_LibraryForEachGate( pLib, pGate ) + pLib->nGates++; + + // start a temporary BDD manager + pLib->dd = Cudd_Init( 20, 0, CUDD_UNIQUE_SLOTS, CUDD_CACHE_SLOTS, 0 ); + // introduce ZDD variables + Cudd_zddVarsFromBddVars( pLib->dd, 2 ); + + // for each gate, derive its function + Mio_LibraryForEachGate( pLib, pGate ) + if ( Mio_GateParseFormula( pGate ) ) + return 1; + return 0; +} + + +/**Function************************************************************* + + Synopsis [Deriving the functionality of the gates.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Mio_GateParseFormula( Mio_Gate_t * pGate ) +{ + DdManager * dd = pGate->pLib->dd; + char * pPinNames[100]; + char * pPinNamesCopy[100]; + Mio_Pin_t * pPin, ** ppPin; + int nPins, iPin, i; + + // set the maximum delay of the gate; count pins + pGate->dDelayMax = 0.0; + nPins = 0; + Mio_GateForEachPin( pGate, pPin ) + { + // set the maximum delay of the gate + if ( pGate->dDelayMax < pPin->dDelayBlockMax ) + pGate->dDelayMax = pPin->dDelayBlockMax; + // count the pin + nPins++; + } + + // check for the gate with const function + if ( nPins == 0 ) + { + if ( strcmp( pGate->pForm, MIO_STRING_CONST0 ) == 0 ) + { + pGate->bFunc = b0; + pGate->pSop = Abc_SopRegister( pGate->pLib->pMmFlex, " 0\n" ); + pGate->pLib->pGate0 = pGate; + } + else if ( strcmp( pGate->pForm, MIO_STRING_CONST1 ) == 0 ) + { + pGate->bFunc = b1; + pGate->pSop = Abc_SopRegister( pGate->pLib->pMmFlex, " 1\n" ); + pGate->pLib->pGate1 = pGate; + } + else + { + printf( "Cannot parse formula \"%s\" of gate \"%s\".\n", pGate->pForm, pGate->pName ); + return 1; + } + Cudd_Ref( pGate->bFunc ); + return 0; + } + + // collect the names as they appear in the formula + nPins = Mio_GateCollectNames( pGate->pForm, pPinNames ); + if ( nPins == 0 ) + { + printf( "Cannot read formula \"%s\" of gate \"%s\".\n", pGate->pForm, pGate->pName ); + return 1; + } + + // set the number of inputs + pGate->nInputs = nPins; + + // consider the case when all the pins have identical pin info + if ( strcmp( pGate->pPins->pName, "*" ) == 0 ) + { + // get the topmost (generic) pin + pPin = pGate->pPins; + FREE( pPin->pName ); + + // create individual pins from the generic pin + ppPin = &pPin->pNext; + for ( i = 1; i < nPins; i++ ) + { + // get the new pin + *ppPin = Mio_PinDup( pPin ); + // set its name + (*ppPin)->pName = pPinNames[i]; + // prepare the next place in the list + ppPin = &((*ppPin)->pNext); + } + *ppPin = NULL; + + // set the name of the topmost pin + pPin->pName = pPinNames[0]; + } + else + { + // reorder the variable names to appear the save way as the pins + iPin = 0; + Mio_GateForEachPin( pGate, pPin ) + { + // find the pin with the name pPin->pName + for ( i = 0; i < nPins; i++ ) + { + if ( pPinNames[i] && strcmp( pPinNames[i], pPin->pName ) == 0 ) + { + // free pPinNames[i] because it is already available as pPin->pName + // setting pPinNames[i] to NULL is useful to make sure that + // this name is not assigned to two pins in the list + FREE( pPinNames[i] ); + pPinNamesCopy[iPin++] = pPin->pName; + break; + } + if ( i == nPins ) + { + printf( "Cannot find pin name \"%s\" in the formula \"%s\" of gate \"%s\".\n", + pPin->pName, pGate->pForm, pGate->pName ); + return 1; + } + } + } + + // check for the remaining names + for ( i = 0; i < nPins; i++ ) + if ( pPinNames[i] ) + { + printf( "Name \"%s\" appears in the formula \"%s\" of gate \"%s\" but there is no such pin.\n", + pPinNames[i], pGate->pForm, pGate->pName ); + return 1; + } + + // copy the names back + memcpy( pPinNames, pPinNamesCopy, nPins * sizeof(char *) ); + } + + // expand the manager if necessary + if ( dd->size < nPins ) + { + Cudd_Quit( dd ); + dd = Cudd_Init( nPins + 10, 0, CUDD_UNIQUE_SLOTS, CUDD_CACHE_SLOTS, 0 ); + Cudd_zddVarsFromBddVars( dd, 2 ); + } + + // derive the formula as the BDD + pGate->bFunc = Parse_FormulaParser( stdout, pGate->pForm, nPins, 0, pPinNames, dd, dd->vars ); + Cudd_Ref( pGate->bFunc ); + + // derive the cover (SOP) + pGate->pSop = Abc_ConvertBddToSop( pGate->pLib->pMmFlex, dd, pGate->bFunc, pGate->bFunc, nPins, 0, pGate->pLib->vCube, -1 ); + return 0; +} + +/**Function************************************************************* + + Synopsis [Collect the pin names in the formula.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Mio_GateCollectNames( char * pFormula, char * pPinNames[] ) +{ + char Buffer[1000]; + char * pTemp; + int nPins, i; + + // save the formula as it was + strcpy( Buffer, pFormula ); + + // remove the non-name symbols + for ( pTemp = Buffer; *pTemp; pTemp++ ) + if ( *pTemp == MIO_SYMB_AND || *pTemp == MIO_SYMB_OR || *pTemp == MIO_SYMB_NOT + || *pTemp == MIO_SYMB_OPEN || *pTemp == MIO_SYMB_CLOSE || *pTemp == MIO_SYMB_AFTNOT ) + *pTemp = ' '; + + // save the names + nPins = 0; + pTemp = strtok( Buffer, " " ); + while ( pTemp ) + { + for ( i = 0; i < nPins; i++ ) + if ( strcmp( pTemp, pPinNames[i] ) == 0 ) + break; + if ( i == nPins ) + { // cannot find this name; save it + pPinNames[nPins++] = Extra_UtilStrsav(pTemp); + } + // get the next name + pTemp = strtok( NULL, " " ); + } + return nPins; +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + |