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Diffstat (limited to 'abc70930/src/base/io/ioReadBaf.c')
| -rw-r--r-- | abc70930/src/base/io/ioReadBaf.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/abc70930/src/base/io/ioReadBaf.c b/abc70930/src/base/io/ioReadBaf.c new file mode 100644 index 00000000..8dce54af --- /dev/null +++ b/abc70930/src/base/io/ioReadBaf.c @@ -0,0 +1,171 @@ +/**CFile**************************************************************** + + FileName [ioReadBaf.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Command processing package.] + + Synopsis [Procedures to read AIG in the binary format.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: ioReadBaf.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "io.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Reads the AIG in the binary format.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Io_ReadBaf( char * pFileName, int fCheck ) +{ + ProgressBar * pProgress; + FILE * pFile; + Vec_Ptr_t * vNodes; + Abc_Obj_t * pObj, * pNode0, * pNode1; + Abc_Ntk_t * pNtkNew; + int nInputs, nOutputs, nLatches, nAnds, nFileSize, Num, i; + char * pContents, * pName, * pCur; + unsigned * pBufferNode; + + // read the file into the buffer + nFileSize = Extra_FileSize( pFileName ); + pFile = fopen( pFileName, "rb" ); + pContents = ALLOC( char, nFileSize ); + fread( pContents, nFileSize, 1, pFile ); + fclose( pFile ); + + // skip the comments (comment lines begin with '#' and end with '\n') + for ( pCur = pContents; *pCur == '#'; ) + while ( *pCur++ != '\n' ); + + // read the name + pName = pCur; while ( *pCur++ ); + // read the number of inputs + nInputs = atoi( pCur ); while ( *pCur++ ); + // read the number of outputs + nOutputs = atoi( pCur ); while ( *pCur++ ); + // read the number of latches + nLatches = atoi( pCur ); while ( *pCur++ ); + // read the number of nodes + nAnds = atoi( pCur ); while ( *pCur++ ); + + // allocate the empty AIG + pNtkNew = Abc_NtkAlloc( ABC_NTK_STRASH, ABC_FUNC_AIG, 1 ); + pNtkNew->pName = Extra_UtilStrsav( pName ); + pNtkNew->pSpec = Extra_UtilStrsav( pFileName ); + + // prepare the array of nodes + vNodes = Vec_PtrAlloc( 1 + nInputs + nLatches + nAnds ); + Vec_PtrPush( vNodes, Abc_AigConst1(pNtkNew) ); + + // create the PIs + for ( i = 0; i < nInputs; i++ ) + { + pObj = Abc_NtkCreatePi(pNtkNew); + Abc_ObjAssignName( pObj, pCur, NULL ); while ( *pCur++ ); + Vec_PtrPush( vNodes, pObj ); + } + // create the POs + for ( i = 0; i < nOutputs; i++ ) + { + pObj = Abc_NtkCreatePo(pNtkNew); + Abc_ObjAssignName( pObj, pCur, NULL ); while ( *pCur++ ); + } + // create the latches + for ( i = 0; i < nLatches; i++ ) + { + pObj = Abc_NtkCreateLatch(pNtkNew); + Abc_ObjAssignName( pObj, pCur, NULL ); while ( *pCur++ ); + + pNode0 = Abc_NtkCreateBi(pNtkNew); + Abc_ObjAssignName( pNode0, pCur, NULL ); while ( *pCur++ ); + + pNode1 = Abc_NtkCreateBo(pNtkNew); + Abc_ObjAssignName( pNode1, pCur, NULL ); while ( *pCur++ ); + Vec_PtrPush( vNodes, pNode1 ); + + Abc_ObjAddFanin( pObj, pNode0 ); + Abc_ObjAddFanin( pNode1, pObj ); + } + + // get the pointer to the beginning of the node array + pBufferNode = (int *)(pContents + (nFileSize - (2 * nAnds + nOutputs + nLatches) * sizeof(int)) ); + // make sure we are at the place where the nodes begin + if ( pBufferNode != (int *)pCur ) + { + free( pContents ); + Vec_PtrFree( vNodes ); + Abc_NtkDelete( pNtkNew ); + printf( "Warning: Internal reader error.\n" ); + return NULL; + } + + // create the AND gates + pProgress = Extra_ProgressBarStart( stdout, nAnds ); + for ( i = 0; i < nAnds; i++ ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + pNode0 = Abc_ObjNotCond( Vec_PtrEntry(vNodes, pBufferNode[2*i+0] >> 1), pBufferNode[2*i+0] & 1 ); + pNode1 = Abc_ObjNotCond( Vec_PtrEntry(vNodes, pBufferNode[2*i+1] >> 1), pBufferNode[2*i+1] & 1 ); + Vec_PtrPush( vNodes, Abc_AigAnd(pNtkNew->pManFunc, pNode0, pNode1) ); + } + Extra_ProgressBarStop( pProgress ); + + // read the POs + Abc_NtkForEachCo( pNtkNew, pObj, i ) + { + Num = pBufferNode[2*nAnds+i]; + if ( Abc_ObjFanoutNum(pObj) > 0 && Abc_ObjIsLatch(Abc_ObjFanout0(pObj)) ) + { + Abc_ObjSetData( Abc_ObjFanout0(pObj), (void *)(Num & 3) ); + Num >>= 2; + } + pNode0 = Abc_ObjNotCond( Vec_PtrEntry(vNodes, Num >> 1), Num & 1 ); + Abc_ObjAddFanin( pObj, pNode0 ); + } + free( pContents ); + Vec_PtrFree( vNodes ); + + // remove the extra nodes +// Abc_AigCleanup( pNtkNew->pManFunc ); + + // check the result + if ( fCheck && !Abc_NtkCheckRead( pNtkNew ) ) + { + printf( "Io_ReadBaf: The network check has failed.\n" ); + Abc_NtkDelete( pNtkNew ); + return NULL; + } + return pNtkNew; + +} + + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + |