Version abc50729

1 files changed, 227 insertions, 0 deletions

diff --git a/src/base/io/ioReadBench.c b/src/base/io/ioReadBench.c
new file mode 100644
index 00000000..0660adc7
--- /dev/null
+++ b/src/base/io/ioReadBench.c
@@ -0,0 +1,227 @@
+/**CFile****************************************************************
+
+  FileName    [ioReadBench.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [Command processing package.]
+
+  Synopsis    [Procedures to read BENCH files.]
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 20, 2005.]
+
+  Revision    [$Id: ioReadBench.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "io.h"
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+static Abc_Ntk_t * Io_ReadBenchNetwork( Extra_FileReader_t * p );
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFITIONS                           ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    [Read the network from BENCH file.]
+
+  Description [Currently works only for the miter cone.]
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Abc_Ntk_t * Io_ReadBench( char * pFileName, int fCheck )
+{
+    Extra_FileReader_t * p;
+    Abc_Ntk_t * pNtk;
+
+    // start the file
+    p = Extra_FileReaderAlloc( pFileName, "#", "\n", " \t\r,()=" );
+    if ( p == NULL )
+        return NULL;
+
+    // read the network
+    pNtk = Io_ReadBenchNetwork( p );
+    Extra_FileReaderFree( p );
+    if ( pNtk == NULL )
+        return NULL;
+
+    // make sure that everything is okay with the network structure
+    if ( fCheck && !Abc_NtkCheck( pNtk ) )
+    {
+        printf( "Io_ReadBench: The network check has failed.\n" );
+        Abc_NtkDelete( pNtk );
+        return NULL;
+    }
+    return pNtk;
+}
+/**Function*************************************************************
+
+  Synopsis    [Read the network from BENCH file.]
+
+  Description [Currently works only for the miter cone.]
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Abc_Ntk_t * Io_ReadBenchNetwork( Extra_FileReader_t * p )
+{
+    ProgressBar * pProgress;
+    Vec_Ptr_t * vTokens;
+    Abc_Ntk_t * pNtk;
+    Abc_Obj_t * pNet, * pLatch, * pNode;
+    Vec_Str_t * vString;
+    char * pType;
+    int SymbolIn, SymbolOut, i, iLine;
+    
+    // allocate the empty network
+    pNtk = Abc_NtkAlloc( ABC_NTK_NETLIST );
+
+    // set the specs
+    pNtk->pName = util_strsav( Extra_FileReaderGetFileName(p) );
+    pNtk->pSpec = util_strsav( Extra_FileReaderGetFileName(p) );
+
+    // go through the lines of the file
+    vString = Vec_StrAlloc( 100 );
+    pProgress = Extra_ProgressBarStart( stdout, Extra_FileReaderGetFileSize(p) );
+    for ( iLine = 0; vTokens = Extra_FileReaderGetTokens(p); iLine++ )
+    {
+        Extra_ProgressBarUpdate( pProgress, Extra_FileReaderGetCurPosition(p), NULL );
+
+        if ( vTokens->nSize == 1 )
+        {
+            printf( "%s: Wrong input file format.\n", Extra_FileReaderGetFileName(p) );
+            Abc_NtkDelete( pNtk );
+            return NULL;
+        }
+
+        // get the type of the line
+        if ( strncmp( vTokens->pArray[0], "INPUT", 5 ) == 0 )
+        {
+            pNet = Abc_NtkFindOrCreateNet( pNtk, vTokens->pArray[1] );
+            if ( Abc_ObjIsPi(pNet) )
+                printf( "Warning: PI net \"%s\" appears twice in the list.\n", vTokens->pArray[1] );
+            else
+                Abc_NtkMarkNetPi( pNet );
+        }
+        else if ( strncmp( vTokens->pArray[0], "OUTPUT", 5 ) == 0 )
+        {
+            pNet = Abc_NtkFindOrCreateNet( pNtk, vTokens->pArray[1] );
+            if ( Abc_ObjIsPo(pNet) )
+                printf( "Warning: PO net \"%s\" appears twice in the list.\n", vTokens->pArray[1] );
+            else
+                Abc_NtkMarkNetPo( pNet );
+        }
+        else 
+        {
+            // get the node name and the node type
+            pType = vTokens->pArray[1];
+            if ( strcmp(pType, "DFF") == 0 )
+            {
+                // create a new node and add it to the network
+                pLatch = Abc_NtkCreateLatch( pNtk );
+                // create the LO (PI)
+                pNet = Abc_NtkFindOrCreateNet( pNtk, vTokens->pArray[0] );
+                Abc_ObjAddFanin( pNet, pLatch );
+                Abc_ObjSetSubtype( pNet, ABC_OBJ_SUBTYPE_LO );
+                // save the LI (PO)
+                pNet = Abc_NtkFindOrCreateNet( pNtk, vTokens->pArray[2] );
+                Abc_ObjAddFanin( pLatch, pNet );
+                Abc_ObjSetSubtype( pNet, ABC_OBJ_SUBTYPE_LI );
+            }
+            else
+            {
+                // create a new node and add it to the network
+                pNode = Abc_NtkCreateNode( pNtk );
+                // get the input symbol to be inserted
+                if ( !strncmp(pType, "BUF", 3) || !strcmp(pType, "AND") || !strcmp(pType, "NAND") )
+                    SymbolIn = '1';
+                else if ( !strncmp(pType, "NOT", 3) || !strcmp(pType, "OR") || !strcmp(pType, "NOR") )
+                    SymbolIn = '0';
+                else if ( !strcmp(pType, "XOR") || !strcmp(pType, "NXOR") )
+                    SymbolIn = '*';
+                else
+                {
+                    printf( "Cannot determine gate type \"%s\" in line %d.\n", pType, Extra_FileReaderGetLineNumber(p, 0) );
+                    Abc_NtkDelete( pNtk );
+                    return NULL;
+                }
+                // get the output symbol
+                if ( !strcmp(pType, "NAND") || !strcmp(pType, "OR") || !strcmp(pType, "NXOR") )
+                    SymbolOut = '0';
+                else
+                    SymbolOut = '1';
+
+                // add the fanout net
+                pNet = Abc_NtkFindOrCreateNet( pNtk, vTokens->pArray[0] );
+                Abc_ObjAddFanin( pNet, pNode );
+                // add the fanin nets
+                for ( i = 2; i < vTokens->nSize; i++ )
+                {
+                    pNet = Abc_NtkFindOrCreateNet( pNtk, vTokens->pArray[i] );
+                    Abc_ObjAddFanin( pNode, pNet );
+                }
+                if ( SymbolIn != '*' )
+                {
+                    // fill in the function
+                    Vec_StrFill( vString, vTokens->nSize - 2, (char)SymbolIn );
+                    Vec_StrPush( vString, ' ' );
+                    Vec_StrPush( vString, (char)SymbolOut );
+                    Vec_StrPush( vString, '\n' );
+                    Vec_StrPush( vString, '\0' );
+                    Abc_ObjSetData( pNode, Abc_SopRegister(pNtk->pManFunc, vString->pArray) );
+                }
+                else
+                { // write XOR/NXOR gates
+                    assert( i == 4 );
+                    if ( SymbolOut == '1' )
+                        Abc_ObjSetData( pNode, Abc_SopRegister(pNtk->pManFunc, "01 1\n10 1\n") );
+                    else
+                        Abc_ObjSetData( pNode, Abc_SopRegister(pNtk->pManFunc, "00 1\n11 1\n") );
+                }
+            }
+        }
+    }
+    Extra_ProgressBarStop( pProgress );
+    // check if constant have been added
+    if ( pNet = Abc_NtkFindNet( pNtk, "vdd" ) )
+    {
+        // create the constant 1 node
+        pNode = Abc_NtkCreateNode( pNtk );
+        Abc_ObjAddFanin( pNet, pNode );
+        Abc_ObjSetData( pNode, Abc_SopRegister(pNtk->pManFunc, " 1\n") );
+    }
+    if ( pNet = Abc_NtkFindNet( pNtk, "gnd" ) )
+    {
+        // create the constant 1 node
+        pNode = Abc_NtkCreateNode( pNtk );
+        Abc_ObjAddFanin( pNet, pNode );
+        Abc_ObjSetData( pNode, Abc_SopRegister(pNtk->pManFunc, " 0\n") );
+    }
+
+    Io_ReadSetNonDrivenNets( pNtk );
+    Vec_StrFree( vString );
+    return pNtk;
+}
+
+
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
+