/**CFile**************************************************************** FileName [ntlReadBlif.c] SystemName [ABC: Logic synthesis and verification system.] PackageName [Command processing package.] Synopsis [Procedures to read BLIF file.] Author [Alan Mishchenko] Affiliation [UC Berkeley] Date [Ver. 1.0. Started - January 8, 2007.] Revision [$Id: ntlReadBlif.c,v 1.00 2007/01/08 00:00:00 alanmi Exp $] ***********************************************************************/ #include "ntl.h" //////////////////////////////////////////////////////////////////////// /// DECLARATIONS /// //////////////////////////////////////////////////////////////////////// typedef struct Ioa_ReadMod_t_ Ioa_ReadMod_t; // parsing model typedef struct Ioa_ReadMan_t_ Ioa_ReadMan_t; // parsing manager struct Ioa_ReadMod_t_ { // file lines char * pFirst; // .model line char * pAttrib; // .attrib line Vec_Ptr_t * vInputs; // .inputs lines Vec_Ptr_t * vOutputs; // .outputs lines Vec_Ptr_t * vLatches; // .latch lines Vec_Ptr_t * vNames; // .names lines Vec_Ptr_t * vSubckts; // .subckt lines Vec_Ptr_t * vDelays; // .delay lines Vec_Ptr_t * vArrivals; // .input_arrival lines Vec_Ptr_t * vRequireds; // .output_required lines int fBlackBox; // indicates blackbox model // the resulting network Ntl_Mod_t * pNtk; // the parent manager Ioa_ReadMan_t * pMan; }; struct Ioa_ReadMan_t_ { // general info about file char * pFileName; // the name of the file char * pBuffer; // the contents of the file Vec_Ptr_t * vLines; // the line beginnings // the results of reading Ntl_Man_t * pDesign; // the design under construction // intermediate storage for models Vec_Ptr_t * vModels; // vector of models Ioa_ReadMod_t * pLatest; // the current model // current processing info Vec_Ptr_t * vTokens; // the current tokens Vec_Ptr_t * vTokens2; // the current tokens Vec_Str_t * vFunc; // the local function // error reporting char sError[512]; // the error string generated during parsing // statistics int nTablesRead; // the number of processed tables int nTablesLeft; // the number of dangling tables }; // static functions static Ioa_ReadMan_t * Ioa_ReadAlloc(); static void Ioa_ReadFree( Ioa_ReadMan_t * p ); static Ioa_ReadMod_t * Ioa_ReadModAlloc(); static void Ioa_ReadModFree( Ioa_ReadMod_t * p ); static char * Ioa_ReadLoadFile( char * pFileName ); static void Ioa_ReadReadPreparse( Ioa_ReadMan_t * p ); static int Ioa_ReadReadInterfaces( Ioa_ReadMan_t * p ); static Ntl_Man_t * Ioa_ReadParse( Ioa_ReadMan_t * p ); static int Ioa_ReadParseLineModel( Ioa_ReadMod_t * p, char * pLine ); static int Ioa_ReadParseLineAttrib( Ioa_ReadMod_t * p, char * pLine ); static int Ioa_ReadParseLineInputs( Ioa_ReadMod_t * p, char * pLine ); static int Ioa_ReadParseLineOutputs( Ioa_ReadMod_t * p, char * pLine ); static int Ioa_ReadParseLineLatch( Ioa_ReadMod_t * p, char * pLine ); static int Ioa_ReadParseLineSubckt( Ioa_ReadMod_t * p, char * pLine ); static int Ioa_ReadParseLineDelay( Ioa_ReadMod_t * p, char * pLine ); static int Ioa_ReadParseLineTimes( Ioa_ReadMod_t * p, char * pLine, int fOutput ); static int Ioa_ReadParseLineNamesBlif( Ioa_ReadMod_t * p, char * pLine ); static int Ioa_ReadCharIsSpace( char s ) { return s == ' ' || s == '\t' || s == '\r' || s == '\n'; } static int Ioa_ReadCharIsSopSymb( char s ) { return s == '0' || s == '1' || s == '-' || s == '\r' || s == '\n'; } //////////////////////////////////////////////////////////////////////// /// FUNCTION DEFINITIONS /// //////////////////////////////////////////////////////////////////////// /**Function************************************************************* Synopsis [Reads the network from the BLIF file.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ Ntl_Man_t * Ioa_ReadBlif( char * pFileName, int fCheck ) { FILE * pFile; Ioa_ReadMan_t * p; Ntl_Man_t * pDesign; // int nNodes; // check that the file is available pFile = fopen( pFileName, "rb" ); if ( pFile == NULL ) { printf( "Ioa_ReadBlif(): The file is unavailable (absent or open).\n" ); return 0; } fclose( pFile ); // start the file reader p = Ioa_ReadAlloc(); p->pFileName = pFileName; p->pBuffer = Ioa_ReadLoadFile( pFileName ); if ( p->pBuffer == NULL ) { Ioa_ReadFree( p ); return NULL; } // set the design name p->pDesign = Ntl_ManAlloc( pFileName ); p->pDesign->pName = Ntl_ManStoreFileName( p->pDesign, pFileName ); p->pDesign->pSpec = Ntl_ManStoreName( p->pDesign, pFileName ); // prepare the file for parsing Ioa_ReadReadPreparse( p ); // parse interfaces of each network if ( !Ioa_ReadReadInterfaces( p ) ) { if ( p->sError[0] ) fprintf( stdout, "%s\n", p->sError ); Ioa_ReadFree( p ); return NULL; } // construct the network pDesign = Ioa_ReadParse( p ); if ( p->sError[0] ) fprintf( stdout, "%s\n", p->sError ); if ( pDesign == NULL ) { Ioa_ReadFree( p ); return NULL; } p->pDesign = NULL; Ioa_ReadFree( p ); // pDesign should be linked to all models of the design // make sure that everything is okay with the network structure if ( fCheck ) { if ( !Ntl_ManCheck( pDesign ) ) { printf( "Ioa_ReadBlif: The check has failed for design %s.\n", pDesign->pName ); Ntl_ManFree( pDesign ); return NULL; } } // transform the design by removing the CO drivers // if ( (nNodes = Ntl_ManReconnectCoDrivers(pDesign)) ) // printf( "The design was transformed by removing %d buf/inv CO drivers.\n", nNodes ); //Ioa_WriteBlif( pDesign, "_temp_.blif" ); return pDesign; } /**Function************************************************************* Synopsis [Allocates the BLIF parsing structure.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static Ioa_ReadMan_t * Ioa_ReadAlloc() { Ioa_ReadMan_t * p; p = ALLOC( Ioa_ReadMan_t, 1 ); memset( p, 0, sizeof(Ioa_ReadMan_t) ); p->vLines = Vec_PtrAlloc( 512 ); p->vModels = Vec_PtrAlloc( 512 ); p->vTokens = Vec_PtrAlloc( 512 ); p->vTokens2 = Vec_PtrAlloc( 512 ); p->vFunc = Vec_StrAlloc( 512 ); return p; } /**Function************************************************************* Synopsis [Frees the BLIF parsing structure.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static void Ioa_ReadFree( Ioa_ReadMan_t * p ) { Ioa_ReadMod_t * pMod; int i; if ( p->pDesign ) Ntl_ManFree( p->pDesign ); if ( p->pBuffer ) free( p->pBuffer ); if ( p->vLines ) Vec_PtrFree( p->vLines ); if ( p->vModels ) { Vec_PtrForEachEntry( p->vModels, pMod, i ) Ioa_ReadModFree( pMod ); Vec_PtrFree( p->vModels ); } Vec_PtrFree( p->vTokens ); Vec_PtrFree( p->vTokens2 ); Vec_StrFree( p->vFunc ); free( p ); } /**Function************************************************************* Synopsis [Allocates the BLIF parsing structure for one model.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static Ioa_ReadMod_t * Ioa_ReadModAlloc() { Ioa_ReadMod_t * p; p = ALLOC( Ioa_ReadMod_t, 1 ); memset( p, 0, sizeof(Ioa_ReadMod_t) ); p->vInputs = Vec_PtrAlloc( 512 ); p->vOutputs = Vec_PtrAlloc( 512 ); p->vLatches = Vec_PtrAlloc( 512 ); p->vNames = Vec_PtrAlloc( 512 ); p->vSubckts = Vec_PtrAlloc( 512 ); p->vDelays = Vec_PtrAlloc( 512 ); p->vArrivals = Vec_PtrAlloc( 512 ); p->vRequireds = Vec_PtrAlloc( 512 ); return p; } /**Function************************************************************* Synopsis [Deallocates the BLIF parsing structure for one model.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static void Ioa_ReadModFree( Ioa_ReadMod_t * p ) { Vec_PtrFree( p->vInputs ); Vec_PtrFree( p->vOutputs ); Vec_PtrFree( p->vLatches ); Vec_PtrFree( p->vNames ); Vec_PtrFree( p->vSubckts ); Vec_PtrFree( p->vDelays ); Vec_PtrFree( p->vArrivals ); Vec_PtrFree( p->vRequireds ); free( p ); } /**Function************************************************************* Synopsis [Counts the number of given chars.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static int Ioa_ReadCountChars( char * pLine, char Char ) { char * pCur; int Counter = 0; for ( pCur = pLine; *pCur; pCur++ ) if ( *pCur == Char ) Counter++; return Counter; } /**Function************************************************************* Synopsis [Collects the already split tokens.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static void Ioa_ReadCollectTokens( Vec_Ptr_t * vTokens, char * pInput, char * pOutput ) { char * pCur; Vec_PtrClear( vTokens ); for ( pCur = pInput; pCur < pOutput; pCur++ ) { if ( *pCur == 0 ) continue; Vec_PtrPush( vTokens, pCur ); while ( *++pCur ); } } /**Function************************************************************* Synopsis [Splits the line into tokens.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static void Ioa_ReadSplitIntoTokens( Vec_Ptr_t * vTokens, char * pLine, char Stop ) { char * pCur; // clear spaces for ( pCur = pLine; *pCur != Stop; pCur++ ) if ( Ioa_ReadCharIsSpace(*pCur) ) *pCur = 0; // collect tokens Ioa_ReadCollectTokens( vTokens, pLine, pCur ); } /**Function************************************************************* Synopsis [Splits the line into tokens.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static void Ioa_ReadSplitIntoTokensAndClear( Vec_Ptr_t * vTokens, char * pLine, char Stop, char Char ) { char * pCur; // clear spaces for ( pCur = pLine; *pCur != Stop; pCur++ ) if ( Ioa_ReadCharIsSpace(*pCur) || *pCur == Char ) *pCur = 0; // collect tokens Ioa_ReadCollectTokens( vTokens, pLine, pCur ); } /**Function************************************************************* Synopsis [Returns the 1-based number of the line in which the token occurs.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static int Ioa_ReadGetLine( Ioa_ReadMan_t * p, char * pToken ) { char * pLine; int i; Vec_PtrForEachEntry( p->vLines, pLine, i ) if ( pToken < pLine ) return i; return -1; } /**Function************************************************************* Synopsis [Reads the file into a character buffer.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static char * Ioa_ReadLoadFile( char * pFileName ) { FILE * pFile; int nFileSize; char * pContents; pFile = fopen( pFileName, "rb" ); if ( pFile == NULL ) { printf( "Ioa_ReadLoadFile(): The file is unavailable (absent or open).\n" ); return NULL; } fseek( pFile, 0, SEEK_END ); nFileSize = ftell( pFile ); if ( nFileSize == 0 ) { printf( "Ioa_ReadLoadFile(): The file is empty.\n" ); return NULL; } pContents = ALLOC( char, nFileSize + 10 ); rewind( pFile ); fread( pContents, nFileSize, 1, pFile ); fclose( pFile ); // finish off the file with the spare .end line // some benchmarks suddenly break off without this line strcpy( pContents + nFileSize, "\n.end\n" ); return pContents; } /**Function************************************************************* Synopsis [Prepares the parsing.] Description [Performs several preliminary operations: - Cuts the file buffer into separate lines. - Removes comments and line extenders. - Sorts lines by directives. - Estimates the number of objects. - Allocates room for the objects. - Allocates room for the hash table.] SideEffects [] SeeAlso [] ***********************************************************************/ static void Ioa_ReadReadPreparse( Ioa_ReadMan_t * p ) { char * pCur, * pPrev; int i, fComment = 0; // parse the buffer into lines and remove comments Vec_PtrPush( p->vLines, p->pBuffer ); for ( pCur = p->pBuffer; *pCur; pCur++ ) { if ( *pCur == '\n' ) { *pCur = 0; // if ( *(pCur-1) == '\r' ) // *(pCur-1) = 0; fComment = 0; Vec_PtrPush( p->vLines, pCur + 1 ); } else if ( *pCur == '#' ) fComment = 1; // remove comments if ( fComment ) *pCur = 0; } // unfold the line extensions and sort lines by directive Vec_PtrForEachEntry( p->vLines, pCur, i ) { if ( *pCur == 0 ) continue; // find previous non-space character for ( pPrev = pCur - 2; pPrev >= p->pBuffer; pPrev-- ) if ( !Ioa_ReadCharIsSpace(*pPrev) ) break; // if it is the line extender, overwrite it with spaces if ( *pPrev == '\\' ) { for ( ; *pPrev; pPrev++ ) *pPrev = ' '; *pPrev = ' '; continue; } // skip spaces at the beginning of the line while ( Ioa_ReadCharIsSpace(*pCur++) ); // parse directives if ( *(pCur-1) != '.' ) continue; if ( !strncmp(pCur, "names", 5) ) Vec_PtrPush( p->pLatest->vNames, pCur ); else if ( !strncmp(pCur, "latch", 5) ) Vec_PtrPush( p->pLatest->vLatches, pCur ); else if ( !strncmp(pCur, "inputs", 6) ) Vec_PtrPush( p->pLatest->vInputs, pCur ); else if ( !strncmp(pCur, "outputs", 7) ) Vec_PtrPush( p->pLatest->vOutputs, pCur ); else if ( !strncmp(pCur, "subckt", 6) ) Vec_PtrPush( p->pLatest->vSubckts, pCur ); else if ( !strncmp(pCur, "delay", 5) ) Vec_PtrPush( p->pLatest->vDelays, pCur ); else if ( !strncmp(pCur, "input_arrival", 13) ) Vec_PtrPush( p->pLatest->vArrivals, pCur ); else if ( !strncmp(pCur, "output_required", 15) ) Vec_PtrPush( p->pLatest->vRequireds, pCur ); else if ( !strncmp(pCur, "blackbox", 8) ) p->pLatest->fBlackBox = 1; else if ( !strncmp(pCur, "model", 5) ) { p->pLatest = Ioa_ReadModAlloc(); p->pLatest->pFirst = pCur; p->pLatest->pMan = p; } else if ( !strncmp(pCur, "attrib", 6) ) p->pLatest->pAttrib = pCur; else if ( !strncmp(pCur, "end", 3) ) { if ( p->pLatest ) Vec_PtrPush( p->vModels, p->pLatest ); p->pLatest = NULL; } else if ( !strncmp(pCur, "exdc", 4) ) { fprintf( stdout, "Line %d: Skipping EXDC network.\n", Ioa_ReadGetLine(p, pCur) ); break; } else { pCur--; if ( pCur[strlen(pCur)-1] == '\r' ) pCur[strlen(pCur)-1] = 0; fprintf( stdout, "Line %d: Skipping line \"%s\".\n", Ioa_ReadGetLine(p, pCur), pCur ); } } } /**Function************************************************************* Synopsis [Parses interfaces of the models.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static int Ioa_ReadReadInterfaces( Ioa_ReadMan_t * p ) { Ioa_ReadMod_t * pMod; char * pLine; int i, k; // iterate through the models Vec_PtrForEachEntry( p->vModels, pMod, i ) { // parse the model if ( !Ioa_ReadParseLineModel( pMod, pMod->pFirst ) ) return 0; // parse the model attributes if ( pMod->pAttrib && !Ioa_ReadParseLineAttrib( pMod, pMod->pAttrib ) ) return 0; // parse the inputs Vec_PtrForEachEntry( pMod->vInputs, pLine, k ) if ( !Ioa_ReadParseLineInputs( pMod, pLine ) ) return 0; // parse the outputs Vec_PtrForEachEntry( pMod->vOutputs, pLine, k ) if ( !Ioa_ReadParseLineOutputs( pMod, pLine ) ) return 0; // parse the delay info Vec_PtrForEachEntry( pMod->vDelays, pLine, k ) if ( !Ioa_ReadParseLineDelay( pMod, pLine ) ) return 0; Vec_PtrForEachEntry( pMod->vArrivals, pLine, k ) if ( !Ioa_ReadParseLineTimes( pMod, pLine, 0 ) ) return 0; Vec_PtrForEachEntry( pMod->vRequireds, pLine, k ) if ( !Ioa_ReadParseLineTimes( pMod, pLine, 1 ) ) return 0; } return 1; } /**Function************************************************************* Synopsis [] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static Ntl_Man_t * Ioa_ReadParse( Ioa_ReadMan_t * p ) { Ntl_Man_t * pDesign; Ioa_ReadMod_t * pMod; char * pLine; int i, k; // iterate through the models Vec_PtrForEachEntry( p->vModels, pMod, i ) { // parse the latches Vec_PtrForEachEntry( pMod->vLatches, pLine, k ) if ( !Ioa_ReadParseLineLatch( pMod, pLine ) ) return NULL; // parse the nodes Vec_PtrForEachEntry( pMod->vNames, pLine, k ) if ( !Ioa_ReadParseLineNamesBlif( pMod, pLine ) ) return NULL; // parse the subcircuits Vec_PtrForEachEntry( pMod->vSubckts, pLine, k ) if ( !Ioa_ReadParseLineSubckt( pMod, pLine ) ) return NULL; // finalize the network Ntl_ModelFixNonDrivenNets( pMod->pNtk ); } if ( i == 0 ) return NULL; // update the design name pMod = Vec_PtrEntry( p->vModels, 0 ); p->pDesign->pName = Ntl_ManStoreName( p->pDesign, pMod->pNtk->pName ); // return the network pDesign = p->pDesign; p->pDesign = NULL; return pDesign; } /**Function************************************************************* Synopsis [Parses the model line.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static int Ioa_ReadParseLineModel( Ioa_ReadMod_t * p, char * pLine ) { Vec_Ptr_t * vTokens = p->pMan->vTokens; char * pToken; Ioa_ReadSplitIntoTokens( vTokens, pLine, '\0' ); pToken = Vec_PtrEntry( vTokens, 0 ); assert( !strcmp(pToken, "model") ); if ( Vec_PtrSize(vTokens) != 2 ) { sprintf( p->pMan->sError, "Line %d: The number of entries (%d) in .model line is different from two.", Ioa_ReadGetLine(p->pMan, pToken), Vec_PtrSize(vTokens) ); return 0; } p->pNtk = Ntl_ModelAlloc( p->pMan->pDesign, Vec_PtrEntry(vTokens, 1) ); return 1; } /**Function************************************************************* Synopsis [Parses the model line.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static int Ioa_ReadParseLineAttrib( Ioa_ReadMod_t * p, char * pLine ) { Vec_Ptr_t * vTokens = p->pMan->vTokens; char * pToken; Ioa_ReadSplitIntoTokens( vTokens, pLine, '\0' ); pToken = Vec_PtrEntry( vTokens, 0 ); assert( !strcmp(pToken, "attrib") ); if ( Vec_PtrSize(vTokens) != 2 ) { sprintf( p->pMan->sError, "Line %d: The number of entries (%d) in .attrib line is different from two.", Ioa_ReadGetLine(p->pMan, pToken), Vec_PtrSize(vTokens) ); return 0; } if ( strcmp( Vec_PtrEntry(vTokens, 1), "keep" ) == 0 ) p->pNtk->fKeep = 1; else { sprintf( p->pMan->sError, "Line %d: Unknown attribute (%s) in the .attrib line of model %s.", Ioa_ReadGetLine(p->pMan, pToken), Vec_PtrEntry(vTokens, 1), p->pNtk->pName ); return 0; } return 1; } /**Function************************************************************* Synopsis [Parses the inputs line.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static int Ioa_ReadParseLineInputs( Ioa_ReadMod_t * p, char * pLine ) { Ntl_Net_t * pNet; Ntl_Obj_t * pObj; Vec_Ptr_t * vTokens = p->pMan->vTokens; char * pToken; int i; Ioa_ReadSplitIntoTokens( vTokens, pLine, '\0' ); pToken = Vec_PtrEntry(vTokens, 0); assert( !strcmp(pToken, "inputs") ); Vec_PtrForEachEntryStart( vTokens, pToken, i, 1 ) { pObj = Ntl_ModelCreatePi( p->pNtk ); pNet = Ntl_ModelFindOrCreateNet( p->pNtk, pToken ); if ( !Ntl_ModelSetNetDriver( pObj, pNet ) ) { sprintf( p->pMan->sError, "Line %d: Net %s already has a driver.", Ioa_ReadGetLine(p->pMan, pToken), pNet->pName ); return 0; } } return 1; } /**Function************************************************************* Synopsis [Parses the outputs line.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static int Ioa_ReadParseLineOutputs( Ioa_ReadMod_t * p, char * pLine ) { Ntl_Net_t * pNet; Ntl_Obj_t * pObj; Vec_Ptr_t * vTokens = p->pMan->vTokens; char * pToken; int i; Ioa_ReadSplitIntoTokens( vTokens, pLine, '\0' ); pToken = Vec_PtrEntry(vTokens, 0); assert( !strcmp(pToken, "outputs") ); Vec_PtrForEachEntryStart( vTokens, pToken, i, 1 ) { pNet = Ntl_ModelFindOrCreateNet( p->pNtk, pToken ); pObj = Ntl_ModelCreatePo( p->pNtk, pNet ); } return 1; } /**Function************************************************************* Synopsis [Parses the latches line.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static int Ioa_ReadParseLineLatch( Ioa_ReadMod_t * p, char * pLine ) { Vec_Ptr_t * vTokens = p->pMan->vTokens; Ntl_Net_t * pNetLi, * pNetLo; Ntl_Obj_t * pObj; char * pToken, * pNameLi, * pNameLo; int Init, Class; Ioa_ReadSplitIntoTokens( vTokens, pLine, '\0' ); pToken = Vec_PtrEntry(vTokens,0); assert( !strcmp(pToken, "latch") ); if ( Vec_PtrSize(vTokens) < 3 ) { sprintf( p->pMan->sError, "Line %d: Latch does not have input name and output name.", Ioa_ReadGetLine(p->pMan, pToken) ); return 0; } // create latch pNameLi = Vec_PtrEntry( vTokens, 1 ); pNameLo = Vec_PtrEntry( vTokens, 2 ); pNetLi = Ntl_ModelFindOrCreateNet( p->pNtk, pNameLi ); pNetLo = Ntl_ModelFindOrCreateNet( p->pNtk, pNameLo ); pObj = Ntl_ModelCreateLatch( p->pNtk ); pObj->pFanio[0] = pNetLi; if ( !Ntl_ModelSetNetDriver( pObj, pNetLo ) ) { sprintf( p->pMan->sError, "Line %d: Net %s already has a driver.", Ioa_ReadGetLine(p->pMan, pToken), pNetLo->pName ); return 0; } // get initial value if ( Vec_PtrSize(vTokens) > 3 ) Init = atoi( Vec_PtrEntry(vTokens,Vec_PtrSize(vTokens)-1) ); else Init = 2; if ( Init < 0 || Init > 2 ) { sprintf( p->pMan->sError, "Line %d: Initial state of the latch is incorrect \"%s\".", Ioa_ReadGetLine(p->pMan, pToken), Vec_PtrEntry(vTokens,3) ); return 0; } // get the register class if ( Vec_PtrSize(vTokens) == 6 ) Class = atoi( Vec_PtrEntry(vTokens,3) ); else Class = 0; if ( Class < 0 || Class > (1<<24) ) { sprintf( p->pMan->sError, "Line %d: Class of the latch is incorrect \"%s\".", Ioa_ReadGetLine(p->pMan, pToken), Vec_PtrEntry(vTokens,4) ); return 0; } pObj->LatchId = (Class << 2) | Init; // get the clock if ( Vec_PtrSize(vTokens) == 5 || Vec_PtrSize(vTokens) == 6 ) { pToken = Vec_PtrEntry(vTokens,Vec_PtrSize(vTokens)-2); pNetLi = Ntl_ModelFindOrCreateNet( p->pNtk, pToken ); // pObj->pFanio[1] = pNetLi; } return 1; } /**Function************************************************************* Synopsis [Parses the subckt line.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static int Ioa_ReadParseLineSubckt( Ioa_ReadMod_t * p, char * pLine ) { Vec_Ptr_t * vTokens = p->pMan->vTokens; Ntl_Mod_t * pModel; Ntl_Obj_t * pBox, * pTerm; Ntl_Net_t * pNet; char * pToken, * pName, ** ppNames; int nEquals, i, k; // split the line into tokens nEquals = Ioa_ReadCountChars( pLine, '=' ); Ioa_ReadSplitIntoTokensAndClear( vTokens, pLine, '\0', '=' ); pToken = Vec_PtrEntry(vTokens,0); assert( !strcmp(pToken, "subckt") ); // get the model for this box pName = Vec_PtrEntry(vTokens,1); pModel = Ntl_ManFindModel( p->pMan->pDesign, pName ); if ( pModel == NULL ) { sprintf( p->pMan->sError, "Line %d: Cannot find the model for subcircuit %s.", Ioa_ReadGetLine(p->pMan, pToken), pName ); return 0; } // check if the number of tokens is correct if ( nEquals != Ntl_ModelPiNum(pModel) + Ntl_ModelPoNum(pModel) ) { sprintf( p->pMan->sError, "Line %d: The number of ports (%d) in .subckt differs from the sum of PIs and POs of the model (%d).", Ioa_ReadGetLine(p->pMan, pToken), nEquals, Ntl_ModelPiNum(pModel) + Ntl_ModelPoNum(pModel) ); return 0; } // get the names ppNames = (char **)Vec_PtrArray(vTokens) + 2; // create the box with these terminals pBox = Ntl_ModelCreateBox( p->pNtk, Ntl_ModelPiNum(pModel), Ntl_ModelPoNum(pModel) ); pBox->pImplem = pModel; Ntl_ModelForEachPi( pModel, pTerm, i ) { // find this terminal among the formal inputs of the subcircuit pName = Ntl_ObjFanout0(pTerm)->pName; for ( k = 0; k < nEquals; k++ ) if ( !strcmp( ppNames[2*k], pName ) ) break; if ( k == nEquals ) { sprintf( p->pMan->sError, "Line %d: Cannot find PI \"%s\" of the model \"%s\" as a formal input of the subcircuit.", Ioa_ReadGetLine(p->pMan, pToken), pName, pModel->pName ); return 0; } // create the BI with the actual name pNet = Ntl_ModelFindOrCreateNet( p->pNtk, ppNames[2*k+1] ); Ntl_ObjSetFanin( pBox, pNet, i ); } Ntl_ModelForEachPo( pModel, pTerm, i ) { // find this terminal among the formal outputs of the subcircuit pName = Ntl_ObjFanin0(pTerm)->pName; for ( k = 0; k < nEquals; k++ ) if ( !strcmp( ppNames[2*k], pName ) ) break; if ( k == nEquals ) { sprintf( p->pMan->sError, "Line %d: Cannot find PO \"%s\" of the model \"%s\" as a formal output of the subcircuit.", Ioa_ReadGetLine(p->pMan, pToken), pName, pModel->pName ); return 0; } // create the BI with the actual name pNet = Ntl_ModelFindOrCreateNet( p->pNtk, ppNames[2*k+1] ); Ntl_ObjSetFanout( pBox, pNet, i ); } return 1; } /**Function************************************************************* Synopsis [Parses the subckt line.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static int Ioa_ReadParseLineDelay( Ioa_ReadMod_t * p, char * pLine ) { Vec_Ptr_t * vTokens = p->pMan->vTokens; int RetValue1, RetValue2, Number1, Number2, Temp; char * pToken, * pTokenNum; float Delay; assert( sizeof(float) == sizeof(int) ); Ioa_ReadSplitIntoTokens( vTokens, pLine, '\0' ); pToken = Vec_PtrEntry(vTokens,0); assert( !strcmp(pToken, "delay") ); if ( Vec_PtrSize(vTokens) < 2 && Vec_PtrSize(vTokens) > 4 ) { sprintf( p->pMan->sError, "Line %d: Delay line does not have a valid number of parameters (1, 2, or 3).", Ioa_ReadGetLine(p->pMan, pToken) ); return 0; } // find the delay number pTokenNum = Vec_PtrEntryLast(vTokens); Delay = atof( pTokenNum ); if ( Delay == 0.0 && pTokenNum[0] != '0' ) { sprintf( p->pMan->sError, "Line %d: Delay value (%s) appears to be invalid.", Ioa_ReadGetLine(p->pMan, pToken), Vec_PtrEntryLast(vTokens) ); return 0; } // find the PI/PO numbers RetValue1 = 0; Number1 = -1; if ( Vec_PtrSize(vTokens) > 2 ) { RetValue1 = Ntl_ModelFindPioNumber( p->pNtk, Vec_PtrEntry(vTokens, 1), &Number1 ); if ( RetValue1 == 0 ) { sprintf( p->pMan->sError, "Line %d: Cannot find signal \"%s\" among PIs/POs.", Ioa_ReadGetLine(p->pMan, pToken), Vec_PtrEntry(vTokens, 1) ); return 0; } } RetValue2 = 0; Number2 = -1; if ( Vec_PtrSize(vTokens) > 3 ) { RetValue2 = Ntl_ModelFindPioNumber( p->pNtk, Vec_PtrEntry(vTokens, 2), &Number2 ); if ( RetValue2 == 0 ) { sprintf( p->pMan->sError, "Line %d: Cannot find signal \"%s\" among PIs/POs.", Ioa_ReadGetLine(p->pMan, pToken), Vec_PtrEntry(vTokens, 2) ); return 0; } } if ( RetValue1 == RetValue2 && RetValue1 ) { sprintf( p->pMan->sError, "Line %d: Both signals \"%s\" and \"%s\" listed appear to be PIs or POs.", Ioa_ReadGetLine(p->pMan, pToken), Vec_PtrEntry(vTokens, 1), Vec_PtrEntry(vTokens, 2) ); return 0; } if ( RetValue2 < RetValue1 ) { Temp = RetValue2; RetValue2 = RetValue1; RetValue1 = Temp; Temp = Number2; Number2 = Number1; Number1 = Temp; } assert( RetValue1 == 0 || RetValue1 == -1 ); assert( RetValue2 == 0 || RetValue2 == 1 ); // store the values if ( p->pNtk->vDelays == NULL ) p->pNtk->vDelays = Vec_IntAlloc( 100 ); Vec_IntPush( p->pNtk->vDelays, Number1 ); Vec_IntPush( p->pNtk->vDelays, Number2 ); Vec_IntPush( p->pNtk->vDelays, Aig_Float2Int(Delay) ); return 1; } /**Function************************************************************* Synopsis [Parses the subckt line.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static int Ioa_ReadParseLineTimes( Ioa_ReadMod_t * p, char * pLine, int fOutput ) { Vec_Ptr_t * vTokens = p->pMan->vTokens; int RetValue, Number; char * pToken, * pTokenNum; float Delay; assert( sizeof(float) == sizeof(int) ); Ioa_ReadSplitIntoTokens( vTokens, pLine, '\0' ); pToken = Vec_PtrEntry(vTokens,0); if ( fOutput ) assert( !strcmp(pToken, "output_required") ); else assert( !strcmp(pToken, "input_arrival") ); if ( Vec_PtrSize(vTokens) != 3 ) { sprintf( p->pMan->sError, "Line %d: Delay line does not have a valid number of parameters (3).", Ioa_ReadGetLine(p->pMan, pToken) ); return 0; } // find the delay number pTokenNum = Vec_PtrEntryLast(vTokens); if ( !strcmp( pTokenNum, "-inf" ) ) Delay = -TIM_ETERNITY; else if ( !strcmp( pTokenNum, "inf" ) ) Delay = TIM_ETERNITY; else Delay = atof( pTokenNum ); if ( Delay == 0.0 && pTokenNum[0] != '0' ) { sprintf( p->pMan->sError, "Line %d: Delay value (%s) appears to be invalid.", Ioa_ReadGetLine(p->pMan, pToken), Vec_PtrEntryLast(vTokens) ); return 0; } // find the PI/PO numbers if ( fOutput ) { RetValue = Ntl_ModelFindPioNumber( p->pNtk, Vec_PtrEntry(vTokens, 1), &Number ); if ( RetValue == 0 ) { sprintf( p->pMan->sError, "Line %d: Cannot find signal \"%s\" among POs.", Ioa_ReadGetLine(p->pMan, pToken), Vec_PtrEntry(vTokens, 1) ); return 0; } // store the values if ( p->pNtk->vRequireds == NULL ) p->pNtk->vRequireds = Vec_IntAlloc( 100 ); Vec_IntPush( p->pNtk->vRequireds, Number ); Vec_IntPush( p->pNtk->vRequireds, Aig_Float2Int(Delay) ); } else { RetValue = Ntl_ModelFindPioNumber( p->pNtk, Vec_PtrEntry(vTokens, 1), &Number ); if ( RetValue == 0 ) { sprintf( p->pMan->sError, "Line %d: Cannot find signal \"%s\" among PIs.", Ioa_ReadGetLine(p->pMan, pToken), Vec_PtrEntry(vTokens, 1) ); return 0; } // store the values if ( p->pNtk->vArrivals == NULL ) p->pNtk->vArrivals = Vec_IntAlloc( 100 ); Vec_IntPush( p->pNtk->vArrivals, Number ); Vec_IntPush( p->pNtk->vArrivals, Aig_Float2Int(Delay) ); } return 1; } /**Function************************************************************* Synopsis [Constructs the SOP cover from the file parsing info.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static char * Ioa_ReadParseTableBlif( Ioa_ReadMod_t * p, char * pTable, int nFanins ) { Vec_Ptr_t * vTokens = p->pMan->vTokens; Vec_Str_t * vFunc = p->pMan->vFunc; char * pProduct, * pOutput; int i, Polarity = -1; p->pMan->nTablesRead++; // get the tokens Ioa_ReadSplitIntoTokens( vTokens, pTable, '.' ); if ( Vec_PtrSize(vTokens) == 0 ) return Ntl_ManStoreSop( p->pMan->pDesign->pMemSops, " 0\n" ); if ( Vec_PtrSize(vTokens) == 1 ) { pOutput = Vec_PtrEntry( vTokens, 0 ); if ( ((pOutput[0] - '0') & 0x8E) || pOutput[1] ) { sprintf( p->pMan->sError, "Line %d: Constant table has wrong output value \"%s\".", Ioa_ReadGetLine(p->pMan, pOutput), pOutput ); return NULL; } return Ntl_ManStoreSop( p->pMan->pDesign->pMemSops, (pOutput[0] == '0') ? " 0\n" : " 1\n" ); } pProduct = Vec_PtrEntry( vTokens, 0 ); if ( Vec_PtrSize(vTokens) % 2 == 1 ) { sprintf( p->pMan->sError, "Line %d: Table has odd number of tokens (%d).", Ioa_ReadGetLine(p->pMan, pProduct), Vec_PtrSize(vTokens) ); return NULL; } // parse the table Vec_StrClear( vFunc ); for ( i = 0; i < Vec_PtrSize(vTokens)/2; i++ ) { pProduct = Vec_PtrEntry( vTokens, 2*i + 0 ); pOutput = Vec_PtrEntry( vTokens, 2*i + 1 ); if ( strlen(pProduct) != (unsigned)nFanins ) { sprintf( p->pMan->sError, "Line %d: Cube \"%s\" has size different from the fanin count (%d).", Ioa_ReadGetLine(p->pMan, pProduct), pProduct, nFanins ); return NULL; } if ( ((pOutput[0] - '0') & 0x8E) || pOutput[1] ) { sprintf( p->pMan->sError, "Line %d: Output value \"%s\" is incorrect.", Ioa_ReadGetLine(p->pMan, pProduct), pOutput ); return NULL; } if ( Polarity == -1 ) Polarity = pOutput[0] - '0'; else if ( Polarity != pOutput[0] - '0' ) { sprintf( p->pMan->sError, "Line %d: Output value \"%s\" differs from the value in the first line of the table (%d).", Ioa_ReadGetLine(p->pMan, pProduct), pOutput, Polarity ); return NULL; } // parse one product Vec_StrAppend( vFunc, pProduct ); Vec_StrPush( vFunc, ' ' ); Vec_StrPush( vFunc, pOutput[0] ); Vec_StrPush( vFunc, '\n' ); } Vec_StrPush( vFunc, '\0' ); return Vec_StrArray( vFunc ); } /**Function************************************************************* Synopsis [Parses the nodes line.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static int Ioa_ReadParseLineNamesBlif( Ioa_ReadMod_t * p, char * pLine ) { Vec_Ptr_t * vTokens = p->pMan->vTokens; Ntl_Obj_t * pNode; Ntl_Net_t * pNetOut, * pNetIn; char * pNameOut, * pNameIn; int i; Ioa_ReadSplitIntoTokens( vTokens, pLine, '\0' ); // parse the mapped node // if ( !strcmp(Vec_PtrEntry(vTokens,0), "gate") ) // return Ioa_ReadParseLineGateBlif( p, vTokens ); // parse the regular name line assert( !strcmp(Vec_PtrEntry(vTokens,0), "names") ); pNameOut = Vec_PtrEntryLast( vTokens ); pNetOut = Ntl_ModelFindOrCreateNet( p->pNtk, pNameOut ); // create fanins pNode = Ntl_ModelCreateNode( p->pNtk, Vec_PtrSize(vTokens) - 2 ); for ( i = 0; i < Vec_PtrSize(vTokens) - 2; i++ ) { pNameIn = Vec_PtrEntry(vTokens, i+1); pNetIn = Ntl_ModelFindOrCreateNet( p->pNtk, pNameIn ); Ntl_ObjSetFanin( pNode, pNetIn, i ); } if ( !Ntl_ModelSetNetDriver( pNode, pNetOut ) ) { sprintf( p->pMan->sError, "Line %d: Signal \"%s\" is defined more than once.", Ioa_ReadGetLine(p->pMan, pNameOut), pNameOut ); return 0; } // parse the table of this node pNode->pSop = Ioa_ReadParseTableBlif( p, pNameOut + strlen(pNameOut), pNode->nFanins ); if ( pNode->pSop == NULL ) return 0; pNode->pSop = Ntl_ManStoreSop( p->pNtk->pMan->pMemSops, pNode->pSop ); return 1; } //////////////////////////////////////////////////////////////////////// /// END OF FILE /// ////////////////////////////////////////////////////////////////////////