Adding STG generation (&era -d) and STG encoding (&read_stg <file>).

1 files changed, 247 insertions, 0 deletions

diff --git a/src/aig/gia/giaStg.c b/src/aig/gia/giaStg.c
new file mode 100644
index 00000000..80f12530
--- /dev/null
+++ b/src/aig/gia/giaStg.c
@@ -0,0 +1,247 @@
+/**CFile****************************************************************
+
+  FileName    [gia.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [Scalable AIG package.]
+
+  Synopsis    []
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 20, 2005.]
+
+  Revision    [$Id: gia.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "gia.h"
+#include "misc/extra/extra.h"
+
+ABC_NAMESPACE_IMPL_START
+
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Gia_Man_t * Gia_ManStgOneHot( Vec_Int_t * vLines, int nIns, int nOuts, int nStates )
+{
+    Gia_Man_t * p;
+    Vec_Int_t * vInMints, * vCurs, * vOuts, * vNexts;
+    int i, b, LitC, Lit;
+    assert( Vec_IntSize(vLines) % 4 == 0 );
+
+    // start manager
+    p = Gia_ManStart( 10000 );
+    p->pName = Abc_UtilStrsav( "stg" );
+    for ( i = 0; i < nIns + nStates; i++ )
+        Gia_ManAppendCi(p);
+
+    // create input minterms
+    Gia_ManHashAlloc( p );
+    vInMints = Vec_IntAlloc( 1 << nIns );
+    for ( i = 0; i < (1 << nIns); i++ )
+    {
+        for ( Lit = 1, b = 0; b < nIns; b++ )
+            Lit = Gia_ManHashAnd( p, Lit, Abc_Var2Lit( b+1, !((i >> b) & 1) ) );
+        Vec_IntPush( vInMints, Lit );
+    } 
+
+    // create current states
+    vCurs  = Vec_IntAlloc( nStates );
+    for ( i = 0; i < nStates; i++ )
+        Vec_IntPush( vCurs, Abc_Var2Lit( 1+nIns+i, !i ) );
+
+    // start outputs and current states
+    vOuts  = Vec_IntStart( nOuts );
+    vNexts = Vec_IntStart( nStates );
+
+    // go through the lines
+    for ( i = 0; i < Vec_IntSize(vLines); )
+    {
+        int iMint = Vec_IntEntry(vLines, i++);
+        int iCur  = Vec_IntEntry(vLines, i++) - 1;
+        int iNext = Vec_IntEntry(vLines, i++) - 1;
+        int iOut  = Vec_IntEntry(vLines, i++);
+        assert( iMint >= 0 && iMint < (1<<nIns)  );
+        assert( iCur  >= 0 && iCur  < nStates    );
+        assert( iNext >= 0 && iNext < nStates    );
+        assert( iOut  >= 0 && iOut  < (1<<nOuts) );
+        // create condition
+        LitC = Gia_ManHashAnd( p, Vec_IntEntry(vInMints, iMint), Vec_IntEntry(vCurs, iCur) );
+        // update next state
+        Lit = Gia_ManHashOr( p, LitC, Vec_IntEntry(vNexts, iNext) );
+        Vec_IntWriteEntry( vNexts, iNext, Lit );
+        // update outputs
+        for ( b = 0; b < nOuts; b++ )
+            if ( (iOut >> b) & 1 ) 
+            {
+                Lit = Gia_ManHashOr( p, LitC, Vec_IntEntry(vOuts, b) );
+                Vec_IntWriteEntry( vOuts, b, Lit );
+            }
+    }
+
+    // create POs
+    Vec_IntForEachEntry( vOuts, Lit, i )
+        Gia_ManAppendCo( p, Lit );
+
+    // create next states
+    Vec_IntForEachEntry( vNexts, Lit, i )
+        Gia_ManAppendCo( p, Abc_LitNotCond(Lit, !i) );
+
+    Gia_ManSetRegNum( p, nStates );
+    Gia_ManHashStop( p );
+
+    Vec_IntFree( vInMints );
+    Vec_IntFree( vCurs );
+    Vec_IntFree( vOuts );
+    Vec_IntFree( vNexts );
+
+    assert( !Gia_ManHasDangling(p) );
+    return p;
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Gia_ManStgPrint( FILE * pFile, Vec_Int_t * vLines, int nIns, int nOuts, int nStates )
+{
+    int i, nDigits = Abc_Base10Log( nStates );
+    assert( Vec_IntSize(vLines) % 4 == 0 );
+    for ( i = 0; i < Vec_IntSize(vLines); i += 4 )
+    {
+        int iMint = Vec_IntEntry(vLines, i  );
+        int iCur  = Vec_IntEntry(vLines, i+1) - 1;
+        int iNext = Vec_IntEntry(vLines, i+2) - 1;
+        int iOut  = Vec_IntEntry(vLines, i+3);
+        assert( iMint >= 0 && iMint < (1<<nIns)  );
+        assert( iCur  >= 0 && iCur  < nStates    );
+        assert( iNext >= 0 && iNext < nStates    );
+        assert( iOut  >= 0 && iOut  < (1<<nOuts) );
+        Extra_PrintBinary( pFile, (unsigned *)Vec_IntEntryP(vLines, i),  nIns );
+        fprintf( pFile, " %*d",  nDigits,     Vec_IntEntry(vLines,  i+1) );
+        fprintf( pFile, " %*d ", nDigits,     Vec_IntEntry(vLines,  i+2) );
+        Extra_PrintBinary( pFile, (unsigned *)Vec_IntEntryP(vLines, i+3), nOuts );
+        fprintf( pFile, "\n" );
+    }
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Vec_Int_t * Gia_ManStgReadLines( char * pFileName, int * pnIns, int * pnOuts, int * pnStates )
+{
+    Vec_Int_t * vLines;
+    char pBuffer[1000];
+    char * pToken;
+    int Number, nInputs = -1, nOutputs = -1, nStates = 1;
+    FILE * pFile;
+    pFile = fopen( pFileName, "rb" );
+    if ( pFile == NULL )
+    {
+        printf( "Cannot open file \"%s\".\n", pFileName );
+        return NULL;
+    }
+    vLines = Vec_IntAlloc( 1000 );
+    while ( fgets( pBuffer, 1000, pFile ) != NULL )
+    {
+        // read condition
+        pToken = strtok( pBuffer, " \n" );
+        if ( nInputs == -1 )
+            nInputs = strlen(pToken);
+        else
+            assert( nInputs == (int)strlen(pToken) );
+        Number = Extra_ReadBinary( pToken );
+        Vec_IntPush( vLines, Number );
+        // read current state
+        pToken = strtok( NULL, " \n" );
+        Vec_IntPush( vLines, atoi(pToken) );
+        nStates = Abc_MaxInt( nStates, Vec_IntEntryLast(vLines) );
+        // read next state
+        pToken = strtok( NULL, " \n" );
+        Vec_IntPush( vLines, atoi(pToken) );
+        // read output
+        pToken = strtok( NULL, " \n" );
+        if ( nOutputs == -1 )
+            nOutputs = strlen(pToken);
+        else
+            assert( nOutputs == (int)strlen(pToken) );
+        Number = Extra_ReadBinary( pToken );
+        Vec_IntPush( vLines, Number );
+    }
+    fclose( pFile );
+    if ( pnIns )
+        *pnIns = nInputs;
+    if ( pnOuts )
+        *pnOuts = nOutputs;
+    if ( pnStates )
+        *pnStates = nStates;
+    return vLines;
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Gia_Man_t * Gia_ManStgRead( char * pFileName, int fOneHot, int fLogar )
+{
+    Gia_Man_t * p;
+    Vec_Int_t * vLines;
+    int nIns, nOuts, nStates;
+    vLines = Gia_ManStgReadLines( pFileName, &nIns, &nOuts, &nStates );
+    if ( vLines == NULL )
+        return NULL;
+    p = Gia_ManStgOneHot( vLines, nIns, nOuts, nStates );
+    Vec_IntFree( vLines );
+    return p;
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+