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/**CFile****************************************************************
FileName [ioReadEdif.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Command processing package.]
Synopsis [Procedure to read ISCAS benchmarks in EDIF.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: ioReadEdif.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "io.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
static Abc_Ntk_t * Io_ReadEdifNetwork( Extra_FileReader_t * p );
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Reads the network from an EDIF file.]
Description [Works only for the ISCAS benchmarks.]
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Ntk_t * Io_ReadEdif( char * pFileName, int fCheck )
{
Extra_FileReader_t * p;
Abc_Ntk_t * pNtk;
// start the file
p = Extra_FileReaderAlloc( pFileName, "#", "\n\r", " \t()" );
if ( p == NULL )
return NULL;
// read the network
pNtk = Io_ReadEdifNetwork( p );
Extra_FileReaderFree( p );
if ( pNtk == NULL )
return NULL;
// make sure that everything is okay with the network structure
if ( fCheck && !Abc_NtkCheckRead( pNtk ) )
{
printf( "Io_ReadEdif: The network check has failed.\n" );
Abc_NtkDelete( pNtk );
return NULL;
}
return pNtk;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Ntk_t * Io_ReadEdifNetwork( Extra_FileReader_t * p )
{
ProgressBar * pProgress;
Vec_Ptr_t * vTokens;
Abc_Ntk_t * pNtk;
Abc_Obj_t * pNet, * pObj, * pFanout;
char * pGateName, * pNetName;
int fTokensReady, iLine, i;
// read the first line
vTokens = Extra_FileReaderGetTokens(p);
if ( strcmp( vTokens->pArray[0], "edif" ) != 0 )
{
printf( "%s: Wrong input file format.\n", Extra_FileReaderGetFileName(p) );
return NULL;
}
// allocate the empty network
pNtk = Abc_NtkStartRead( Extra_FileReaderGetFileName(p) );
// go through the lines of the file
fTokensReady = 0;
pProgress = Extra_ProgressBarStart( stdout, Extra_FileReaderGetFileSize(p) );
for ( iLine = 1; fTokensReady || (vTokens = Extra_FileReaderGetTokens(p)); iLine++ )
{
Extra_ProgressBarUpdate( pProgress, Extra_FileReaderGetCurPosition(p), NULL );
// get the type of the line
fTokensReady = 0;
if ( strcmp( vTokens->pArray[0], "instance" ) == 0 )
{
pNetName = vTokens->pArray[1];
pNet = Abc_NtkFindOrCreateNet( pNtk, pNetName );
vTokens = Extra_FileReaderGetTokens(p);
vTokens = Extra_FileReaderGetTokens(p);
pGateName = vTokens->pArray[1];
if ( strncmp( pGateName, "Flip", 4 ) == 0 )
{
pObj = Abc_NtkCreateLatch( pNtk );
Abc_LatchSetInit0( pObj );
}
else
{
pObj = Abc_NtkCreateNode( pNtk );
pObj->pData = Abc_NtkRegisterName( pNtk, pGateName );
}
Abc_ObjAddFanin( pNet, pObj );
}
else if ( strcmp( vTokens->pArray[0], "net" ) == 0 )
{
pNetName = vTokens->pArray[1];
if ( strcmp( pNetName, "CK" ) == 0 || strcmp( pNetName, "RESET" ) == 0 )
continue;
if ( strcmp( pNetName + strlen(pNetName) - 4, "_out" ) == 0 )
pNetName[strlen(pNetName) - 4] = 0;
pNet = Abc_NtkFindNet( pNtk, pNetName );
assert( pNet );
vTokens = Extra_FileReaderGetTokens(p);
vTokens = Extra_FileReaderGetTokens(p);
vTokens = Extra_FileReaderGetTokens(p);
while ( strcmp( vTokens->pArray[0], "portRef" ) == 0 )
{
if ( strcmp( pNetName, vTokens->pArray[3] ) != 0 )
{
pFanout = Abc_NtkFindNet( pNtk, vTokens->pArray[3] );
Abc_ObjAddFanin( Abc_ObjFanin0(pFanout), pNet );
}
vTokens = Extra_FileReaderGetTokens(p);
}
fTokensReady = 1;
}
else if ( strcmp( vTokens->pArray[0], "library" ) == 0 )
{
vTokens = Extra_FileReaderGetTokens(p);
vTokens = Extra_FileReaderGetTokens(p);
vTokens = Extra_FileReaderGetTokens(p);
vTokens = Extra_FileReaderGetTokens(p);
vTokens = Extra_FileReaderGetTokens(p);
while ( strcmp( vTokens->pArray[0], "port" ) == 0 )
{
pNetName = vTokens->pArray[1];
if ( strcmp( pNetName, "CK" ) == 0 || strcmp( pNetName, "RESET" ) == 0 )
{
vTokens = Extra_FileReaderGetTokens(p);
continue;
}
if ( strcmp( pNetName + strlen(pNetName) - 3, "_PO" ) == 0 )
pNetName[strlen(pNetName) - 3] = 0;
if ( strcmp( vTokens->pArray[3], "INPUT" ) == 0 )
Io_ReadCreatePi( pNtk, vTokens->pArray[1] );
else if ( strcmp( vTokens->pArray[3], "OUTPUT" ) == 0 )
Io_ReadCreatePo( pNtk, vTokens->pArray[1] );
else
{
printf( "%s (line %d): Wrong interface specification.\n", Extra_FileReaderGetFileName(p), iLine );
Abc_NtkDelete( pNtk );
return NULL;
}
vTokens = Extra_FileReaderGetTokens(p);
}
}
else if ( strcmp( vTokens->pArray[0], "design" ) == 0 )
{
free( pNtk->pName );
pNtk->pName = util_strsav( vTokens->pArray[3] );
break;
}
}
Extra_ProgressBarStop( pProgress );
// assign logic functions
Abc_NtkForEachNode( pNtk, pObj, i )
{
if ( strncmp( pObj->pData, "And", 3 ) == 0 )
Abc_ObjSetData( pObj, Abc_SopCreateAnd(pNtk->pManFunc, Abc_ObjFaninNum(pObj), NULL) );
else if ( strncmp( pObj->pData, "Or", 2 ) == 0 )
Abc_ObjSetData( pObj, Abc_SopCreateOr(pNtk->pManFunc, Abc_ObjFaninNum(pObj), NULL) );
else if ( strncmp( pObj->pData, "Nand", 4 ) == 0 )
Abc_ObjSetData( pObj, Abc_SopCreateNand(pNtk->pManFunc, Abc_ObjFaninNum(pObj)) );
else if ( strncmp( pObj->pData, "Nor", 3 ) == 0 )
Abc_ObjSetData( pObj, Abc_SopCreateNor(pNtk->pManFunc, Abc_ObjFaninNum(pObj)) );
else if ( strncmp( pObj->pData, "Exor", 4 ) == 0 )
Abc_ObjSetData( pObj, Abc_SopCreateXor(pNtk->pManFunc, Abc_ObjFaninNum(pObj)) );
else if ( strncmp( pObj->pData, "Exnor", 5 ) == 0 )
Abc_ObjSetData( pObj, Abc_SopCreateNxor(pNtk->pManFunc, Abc_ObjFaninNum(pObj)) );
else if ( strncmp( pObj->pData, "Inv", 3 ) == 0 )
Abc_ObjSetData( pObj, Abc_SopCreateInv(pNtk->pManFunc) );
else if ( strncmp( pObj->pData, "Buf", 3 ) == 0 )
Abc_ObjSetData( pObj, Abc_SopCreateBuf(pNtk->pManFunc) );
else
{
printf( "%s: Unknown gate type \"%s\".\n", Extra_FileReaderGetFileName(p), pObj->pData );
Abc_NtkDelete( pNtk );
return NULL;
}
}
// check if constants have been added
// if ( pNet = Abc_NtkFindNet( pNtk, "VDD" ) )
// Io_ReadCreateConst( pNtk, "VDD", 1 );
// if ( pNet = Abc_NtkFindNet( pNtk, "GND" ) )
// Io_ReadCreateConst( pNtk, "GND", 0 );
Abc_NtkFinalizeRead( pNtk );
return pNtk;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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