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/**CFile****************************************************************
FileName [ioUtil.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Command processing package.]
Synopsis [Procedures to write the network in BENCH format.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: ioUtil.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "io.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Creates PI terminal and net.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Obj_t * Io_ReadCreatePi( Abc_Ntk_t * pNtk, char * pName )
{
Abc_Obj_t * pNet, * pTerm;
// get the PI net
pNet = Abc_NtkFindNet( pNtk, pName );
if ( pNet )
printf( "Warning: PI \"%s\" appears twice in the list.\n", pName );
pNet = Abc_NtkFindOrCreateNet( pNtk, pName );
// add the PI node
pTerm = Abc_NtkCreatePi( pNtk );
Abc_ObjAddFanin( pNet, pTerm );
return pTerm;
}
/**Function*************************************************************
Synopsis [Creates PO terminal and net.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Obj_t * Io_ReadCreatePo( Abc_Ntk_t * pNtk, char * pName )
{
Abc_Obj_t * pNet, * pTerm;
// get the PO net
pNet = Abc_NtkFindNet( pNtk, pName );
if ( pNet && Abc_ObjFaninNum(pNet) == 0 )
printf( "Warning: PO \"%s\" appears twice in the list.\n", pName );
pNet = Abc_NtkFindOrCreateNet( pNtk, pName );
// add the PO node
pTerm = Abc_NtkCreatePo( pNtk );
Abc_ObjAddFanin( pTerm, pNet );
return pTerm;
}
/**Function*************************************************************
Synopsis [Creates PO terminal and net.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Obj_t * Io_ReadCreateAssert( Abc_Ntk_t * pNtk, char * pName )
{
Abc_Obj_t * pNet, * pTerm;
// get the PO net
pNet = Abc_NtkFindNet( pNtk, pName );
if ( pNet && Abc_ObjFaninNum(pNet) == 0 )
printf( "Warning: Assert \"%s\" appears twice in the list.\n", pName );
pNet = Abc_NtkFindOrCreateNet( pNtk, pName );
// add the PO node
pTerm = Abc_NtkCreateAssert( pNtk );
Abc_ObjAddFanin( pTerm, pNet );
return pTerm;
}
/**Function*************************************************************
Synopsis [Create a latch with the given input/output.]
Description [By default, the latch value is unknown (ABC_INIT_NONE).]
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Obj_t * Io_ReadCreateLatch( Abc_Ntk_t * pNtk, char * pNetLI, char * pNetLO )
{
Abc_Obj_t * pLatch, * pTerm, * pNet;
// get the LI net
pNet = Abc_NtkFindOrCreateNet( pNtk, pNetLI );
// add the BO terminal
pTerm = Abc_NtkCreateBi( pNtk );
Abc_ObjAddFanin( pTerm, pNet );
// add the latch box
pLatch = Abc_NtkCreateLatch( pNtk );
Abc_ObjAddFanin( pLatch, pTerm );
// add the BI terminal
pTerm = Abc_NtkCreateBo( pNtk );
Abc_ObjAddFanin( pTerm, pLatch );
// get the LO net
pNet = Abc_NtkFindOrCreateNet( pNtk, pNetLO );
Abc_ObjAddFanin( pNet, pTerm );
// set latch name
Abc_ObjAssignName( pLatch, pNetLO, "_latch" );
return pLatch;
}
/**Function*************************************************************
Synopsis [Create node and the net driven by it.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Obj_t * Io_ReadCreateNode( Abc_Ntk_t * pNtk, char * pNameOut, char * pNamesIn[], int nInputs )
{
Abc_Obj_t * pNet, * pNode;
int i;
// create a new node
pNode = Abc_NtkCreateNode( pNtk );
// add the fanin nets
for ( i = 0; i < nInputs; i++ )
{
pNet = Abc_NtkFindOrCreateNet( pNtk, pNamesIn[i] );
Abc_ObjAddFanin( pNode, pNet );
}
// add the fanout net
pNet = Abc_NtkFindOrCreateNet( pNtk, pNameOut );
Abc_ObjAddFanin( pNet, pNode );
return pNode;
}
/**Function*************************************************************
Synopsis [Create a constant 0 node driving the net with this name.]
Description [Assumes that the net already exists.]
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Obj_t * Io_ReadCreateConst( Abc_Ntk_t * pNtk, char * pName, bool fConst1 )
{
Abc_Obj_t * pNet, * pTerm;
pTerm = fConst1? Abc_NtkCreateNodeConst1(pNtk) : Abc_NtkCreateNodeConst0(pNtk);
pNet = Abc_NtkFindNet(pNtk, pName); assert( pNet );
Abc_ObjAddFanin( pNet, pTerm );
return pTerm;
}
/**Function*************************************************************
Synopsis [Create an inverter or buffer for the given net.]
Description [Assumes that the nets already exist.]
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Obj_t * Io_ReadCreateInv( Abc_Ntk_t * pNtk, char * pNameIn, char * pNameOut )
{
Abc_Obj_t * pNet, * pNode;
pNet = Abc_NtkFindNet(pNtk, pNameIn); assert( pNet );
pNode = Abc_NtkCreateNodeInv(pNtk, pNet);
pNet = Abc_NtkFindNet(pNtk, pNameOut); assert( pNet );
Abc_ObjAddFanin( pNet, pNode );
return pNode;
}
/**Function*************************************************************
Synopsis [Create an inverter or buffer for the given net.]
Description [Assumes that the nets already exist.]
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Obj_t * Io_ReadCreateBuf( Abc_Ntk_t * pNtk, char * pNameIn, char * pNameOut )
{
Abc_Obj_t * pNet, * pNode;
pNet = Abc_NtkFindNet(pNtk, pNameIn); assert( pNet );
pNode = Abc_NtkCreateNodeBuf(pNtk, pNet);
pNet = Abc_NtkFindNet(pNtk, pNameOut); assert( pNet );
Abc_ObjAddFanin( pNet, pNode );
return pNet;
}
/**Function*************************************************************
Synopsis [Provide an fopen replacement with path lookup]
Description [Provide an fopen replacement where the path stored
in pathvar MVSIS variable is used to look up the path
for name. Returns NULL if file cannot be opened.]
SideEffects []
SeeAlso []
***********************************************************************/
FILE * Io_FileOpen( const char * FileName, const char * PathVar, const char * Mode, int fVerbose )
{
char * t = 0, * c = 0, * i;
extern char * Abc_FrameReadFlag( char * pFlag );
if ( PathVar == 0 )
{
return fopen( FileName, Mode );
}
else
{
if ( c = Abc_FrameReadFlag( (char*)PathVar ) )
{
char ActualFileName[4096];
FILE * fp = 0;
t = Extra_UtilStrsav( c );
for (i = strtok( t, ":" ); i != 0; i = strtok( 0, ":") )
{
#ifdef WIN32
_snprintf ( ActualFileName, 4096, "%s/%s", i, FileName );
#else
snprintf ( ActualFileName, 4096, "%s/%s", i, FileName );
#endif
if ( ( fp = fopen ( ActualFileName, Mode ) ) )
{
if ( fVerbose )
fprintf ( stdout, "Using file %s\n", ActualFileName );
free( t );
return fp;
}
}
free( t );
return 0;
}
else
{
return fopen( FileName, Mode );
}
}
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
|
