Created a communication bridge.

2 files changed, 371 insertions, 1 deletions

diff --git a/src/misc/util/module.make b/src/misc/util/module.make
index bef32aea..0765db99 100644
--- a/src/misc/util/module.make
+++ b/src/misc/util/module.make
@@ -1,4 +1,5 @@
-SRC +=  src/misc/util/utilCex.c \
+SRC +=  src/misc/util/utilBridge.c \
+    src/misc/util/utilCex.c \
     src/misc/util/utilFile.c \
     src/misc/util/utilNam.c \
     src/misc/util/utilSignal.c \
diff --git a/src/misc/util/utilBridge.c b/src/misc/util/utilBridge.c
new file mode 100644
index 00000000..fc847808
--- /dev/null
+++ b/src/misc/util/utilBridge.c
@@ -0,0 +1,369 @@
+/**CFile****************************************************************
+
+  FileName    [utilBridge.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName []
+
+  Synopsis    []
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 20, 2005.]
+
+  Revision    [$Id: utilBridge.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include "abc_global.h"
+#include "src/aig/gia/gia.h"
+#include "src/misc/vec/vec.h"
+
+ABC_NAMESPACE_IMPL_START
+
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+extern void Gia_WriteAigerEncodeStr( Vec_Str_t * vStr, unsigned x );
+
+extern unsigned Gia_ReadAigerDecode( unsigned char ** ppPos );
+
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Vec_Str_t * Gia_ManToBridgeVec( FILE * pFile, Gia_Man_t * p )
+{
+    Vec_Str_t * vBuffer;
+    Gia_Obj_t * pObj;
+    int nNodes = 0, i, uLit, uLit0, uLit1; 
+    // set the node numbers to be used in the output file
+    Gia_ManConst0(p)->Value = nNodes++;
+    Gia_ManForEachCi( p, pObj, i )
+        pObj->Value = nNodes++;
+    Gia_ManForEachAnd( p, pObj, i )
+        pObj->Value = nNodes++;
+
+    // write the header "M I L O A" where M = I + L + A
+    vBuffer = Vec_StrAlloc( 3*Gia_ManObjNum(p) );
+    Vec_StrPrintStr( vBuffer, "aig " );
+    Vec_StrPrintNum( vBuffer, Gia_ManCandNum(p) );
+    Vec_StrPrintStr( vBuffer, " " );
+    Vec_StrPrintNum( vBuffer, Gia_ManPiNum(p) );
+    Vec_StrPrintStr( vBuffer, " " );
+    Vec_StrPrintNum( vBuffer, Gia_ManRegNum(p) );
+    Vec_StrPrintStr( vBuffer, " " );
+    Vec_StrPrintNum( vBuffer, Gia_ManPoNum(p) );
+    Vec_StrPrintStr( vBuffer, " " );
+    Vec_StrPrintNum( vBuffer, Gia_ManAndNum(p) );
+    Vec_StrPrintStr( vBuffer, "\n" );
+
+    // write latch drivers
+    Gia_ManForEachRi( p, pObj, i )
+    {
+        uLit = Abc_Var2Lit( Gia_ObjValue(Gia_ObjFanin0(pObj)), Gia_ObjFaninC0(pObj) );
+        Vec_StrPrintNum( vBuffer, uLit );
+        Vec_StrPrintStr( vBuffer, "\n" );
+    }
+
+    // write PO drivers
+    Gia_ManForEachPo( p, pObj, i )
+    {
+        uLit = Abc_Var2Lit( Gia_ObjValue(Gia_ObjFanin0(pObj)), Gia_ObjFaninC0(pObj) );
+        Vec_StrPrintNum( vBuffer, uLit );
+        Vec_StrPrintStr( vBuffer, "\n" );
+    }
+    // write the nodes into the buffer
+    Gia_ManForEachAnd( p, pObj, i )
+    {
+        uLit  = Abc_Var2Lit( Gia_ObjValue(pObj), 0 );
+        uLit0 = Abc_Var2Lit( Gia_ObjValue(Gia_ObjFanin0(pObj)), Gia_ObjFaninC0(pObj) );
+        uLit1 = Abc_Var2Lit( Gia_ObjValue(Gia_ObjFanin1(pObj)), Gia_ObjFaninC1(pObj) );
+        assert( uLit0 != uLit1 );
+        if ( uLit0 > uLit1 )
+        {
+            int Temp = uLit0;
+            uLit0 = uLit1;
+            uLit1 = Temp;
+        }
+        Gia_WriteAigerEncodeStr( vBuffer, uLit  - uLit1 );
+        Gia_WriteAigerEncodeStr( vBuffer, uLit1 - uLit0 );
+    }
+    Vec_StrPrintStr( vBuffer, "c" );
+    return vBuffer;
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Gia_ManToBridge( FILE * pFile, Gia_Man_t * pMan )
+{
+    Vec_Str_t * vBuffer;
+    vBuffer = Gia_ManToBridgeVec( pFile, pMan );
+    fwrite( Vec_StrArray(vBuffer), 1, Vec_StrSize(vBuffer), pFile );
+    Vec_StrFree( vBuffer );
+    return 0;
+}
+
+
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Gia_Man_t *  Gia_ManFromBridgeReadBody( int Size, unsigned char * pBuffer, Vec_Int_t ** pvInits )
+{
+    int fHash = 0;
+    Vec_Int_t * vLits, * vInits;
+    Gia_Man_t * p = NULL;
+    unsigned char * pBufferPivot, * pBufferEnd = pBuffer + Size;
+    int i, nInputs, nFlops, nGates, nProps;
+    unsigned iFan0, iFan1;
+
+    nInputs = Gia_ReadAigerDecode( &pBuffer );
+    nFlops  = Gia_ReadAigerDecode( &pBuffer );
+    nGates  = Gia_ReadAigerDecode( &pBuffer );
+
+    vLits = Vec_IntAlloc( 1000 );
+    Vec_IntPush( vLits, -1 );
+    Vec_IntPush( vLits,  1 );
+
+    // start the AIG package
+    p = Gia_ManStart( nInputs + nFlops * 2 + nGates + 1 + 1 );
+    p->pName = Abc_UtilStrsav( "temp" );
+
+    // create PIs
+    for ( i = 0; i < nInputs; i++ )
+        Vec_IntPush( vLits, Gia_ManAppendCi( p ) );
+
+    // create flop outputs
+    for ( i = 0; i < nFlops; i++ )
+        Vec_IntPush( vLits, Gia_ManAppendCi( p ) );
+
+    // create nodes
+    if ( fHash )
+        Gia_ManHashAlloc( p );
+    for ( i = 0; i < nGates; i++ )
+    {
+        iFan0 = Gia_ReadAigerDecode( &pBuffer );
+        iFan1 = Gia_ReadAigerDecode( &pBuffer );
+        assert( (iFan0 & 1)==0 );
+        iFan0 >>= 1;
+
+        iFan0 = Abc_LitNotCond( Vec_IntEntry(vLits, iFan0 >> 1), iFan0 & 1 );
+        iFan1 = Abc_LitNotCond( Vec_IntEntry(vLits, iFan1 >> 1), iFan0 & 1 );
+        if ( fHash )
+            Vec_IntPush( vLits, Gia_ManHashAnd(p, iFan0, iFan1) );
+        else 
+            Vec_IntPush( vLits, Gia_ManAppendAnd(p, iFan0, iFan1) );
+
+    }
+    if ( fHash )
+        Gia_ManHashStop( p );
+
+    // remember where flops begin
+    pBufferPivot = pBuffer;
+    // stroll through flops
+    for ( i = 0; i < nFlops; i++ )
+        Gia_ReadAigerDecode( &pBuffer );
+
+    // create POs
+    nProps = Gia_ReadAigerDecode( &pBuffer );
+    assert( nProps == 1 );
+    for ( i = 0; i < nProps; i++ )
+    {
+        iFan0 = Gia_ReadAigerDecode( &pBuffer );
+        iFan0 = Abc_LitNotCond( Vec_IntEntry(vLits, iFan0 >> 1), iFan0 & 1 );
+        Gia_ManAppendCo( p, iFan0 );
+    }
+    // make sure the end of buffer is reached
+    assert( pBufferEnd == pBuffer );
+
+    // resetting to flops
+    pBuffer = pBufferPivot;
+    vInits = Vec_IntAlloc( nFlops );
+    for ( i = 0; i < nFlops; i++ )
+    {
+        iFan0 = Gia_ReadAigerDecode( &pBuffer );
+        Vec_IntPush( vInits, iFan0 & 3 ); // 0 = X value; 1 = not used; 2 = false; 3 = true
+        iFan0 >>= 2;
+        iFan0 = Abc_LitNotCond( Vec_IntEntry(vLits, iFan0 >> 1), iFan0 & 1 );
+        Gia_ManAppendCo( p, iFan0 );
+    }
+    Gia_ManSetRegNum( p, nFlops );
+    Vec_IntFree( vLits );
+
+    // remove wholes in the node list
+    if ( fHash )
+    {
+        Gia_Man_t * pTemp;
+        p = Gia_ManCleanup( pTemp = p );
+        Gia_ManStop( pTemp );
+    }
+
+    // return
+    if ( pvInits )
+        *pvInits = vInits;
+    else
+        Vec_IntFree( vInits );
+    return p;
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Gia_ManFromBridgeReadPackage( FILE * pFile, int * pType, int * pSize, unsigned char ** ppBuffer )
+{
+    char Temp[24];
+    int RetValue;
+    RetValue = fread( Temp, 24, 1, pFile );
+    if ( RetValue != 1 )
+    {
+        printf( "Gia_ManFromBridgeReadPackage();  Error 1: Something is wrong!\n" );
+        return 0;
+    }
+    Temp[6] = 0;
+    Temp[23]= 0;
+
+    *pType = atoi( Temp );
+    *pSize = atoi( Temp + 7 );
+
+    *ppBuffer = ABC_ALLOC( char, *pSize );
+    RetValue = fread( *ppBuffer, *pSize, 1, pFile );
+    if ( RetValue != 1 && *pSize != 0 )
+    {
+        ABC_FREE( *ppBuffer );
+        printf( "Gia_ManFromBridgeReadPackage();  Error 2: Something is wrong!\n" );
+        return 0;
+    }
+    return 1;
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Gia_Man_t * Gia_ManFromBridge( FILE * pFile, Vec_Int_t ** pvInit )
+{
+    unsigned char * pBuffer;
+    int Type, Size, RetValue;
+    Gia_Man_t * p = NULL;
+
+    RetValue = Gia_ManFromBridgeReadPackage( pFile, &Type, &Size, &pBuffer );
+    ABC_FREE( pBuffer );
+    if ( !RetValue )
+        return NULL; 
+
+    RetValue = Gia_ManFromBridgeReadPackage( pFile, &Type, &Size, &pBuffer );
+    if ( !RetValue )
+        return NULL;
+
+    p = Gia_ManFromBridgeReadBody( Size, pBuffer, pvInit ); 
+    ABC_FREE( pBuffer );
+    if ( p == NULL )
+        return NULL;
+
+    RetValue = Gia_ManFromBridgeReadPackage( pFile, &Type, &Size, &pBuffer );
+    ABC_FREE( pBuffer );
+    if ( !RetValue )
+        return NULL;
+
+    return p;
+}
+
+/*
+    {
+        extern void Gia_ManFromBridgeTest( char * pFileName );
+        Gia_ManFromBridgeTest( "C:\\_projects\\abc\\_TEST\\bug\\65\\par.dump" );
+
+    }
+*/
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Gia_ManFromBridgeTest( char * pFileName )
+{
+    Gia_Man_t * p;
+    FILE * pFile = fopen( pFileName, "rb" );
+    if ( pFile == NULL )
+    {
+        printf( "Cannot open input file \"%s\".\n", pFileName );
+        return;
+    }
+
+    p = Gia_ManFromBridge( pFile, NULL );
+    fclose ( pFile );
+
+    Gia_ManPrintStats( p, 0, 0 );
+//    Gia_WriteAiger( p, "temp.aig", 0, 0 );
+    Gia_ManStop( p );
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+