Procedures to generate constant-argument multipliers.

4 files changed, 121 insertions, 3 deletions

diff --git a/src/misc/extra/extraUtilCfs.c b/src/misc/extra/extraUtilCfs.c
index 408f9de6..3d3dbd17 100644
--- a/src/misc/extra/extraUtilCfs.c
+++ b/src/misc/extra/extraUtilCfs.c
@@ -37,6 +37,21 @@ ABC_NAMESPACE_IMPL_START
 ///                     FUNCTION DEFINITIONS                         ///
 ////////////////////////////////////////////////////////////////////////
 
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Extra_CommandCfs( int Limit, int Reps, int UnseenUse, int RareUse, int fVerbose )
+{
+}
+
 ////////////////////////////////////////////////////////////////////////
 ///                       END OF FILE                                ///
 ////////////////////////////////////////////////////////////////////////
diff --git a/src/misc/extra/extraUtilGen.c b/src/misc/extra/extraUtilGen.c
new file mode 100644
index 00000000..840b9a74
--- /dev/null
+++ b/src/misc/extra/extraUtilGen.c
@@ -0,0 +1,64 @@
+/**CFile****************************************************************
+
+  FileName    [extraUtilGen.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [extra]
+
+  Synopsis    [CF simulation.]
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 20, 2005.]
+
+  Revision    [$Id: extraUtilGen.c,v 1.0 2003/02/01 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "aig/gia/gia.h"
+#include "misc/vec/vecMem.h"
+#include "misc/extra/extra.h"
+#include "misc/util/utilTruth.h"
+
+ABC_NAMESPACE_IMPL_START
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Gia_Man_t * Extra_CommandGen( int Algo, int LutSize, int nLuts, int nLevels, int fVerbose )
+{
+    return NULL;
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+
diff --git a/src/misc/extra/extraUtilMacc.c b/src/misc/extra/extraUtilMacc.c
index 5a7a8164..67515aa7 100644
--- a/src/misc/extra/extraUtilMacc.c
+++ b/src/misc/extra/extraUtilMacc.c
@@ -49,6 +49,22 @@ ABC_NAMESPACE_IMPL_START
   SeeAlso     []
 
 ***********************************************************************/
+void Macc_ConstMultSpecOne2( FILE * pFile, int n, int nBits, int nWidth )
+{
+    int nTotal = nWidth+nBits;
+    int Bound  = 1 << (nBits-1);
+    assert( -Bound <= n && n < Bound );
+    fprintf( pFile, "// %d-bit multiplier-accumulator with constant %d generated by ABC on %s\n", nTotal, n, Extra_TimeStamp() );
+    fprintf( pFile, "module mulacc%03d%s (\n", Abc_AbsInt(n), n < 0 ? "_neg" : "_pos" );
+    fprintf( pFile, "    input  [%d:0] i,\n", nTotal-1 );
+    fprintf( pFile, "    input  [%d:0] s,\n", nTotal-1 );
+    fprintf( pFile, "    output [%d:0] o\n",  nTotal-1 );
+    fprintf( pFile, ");\n" );
+    fprintf( pFile, "    wire [%d:0] c = %d\'h%x;\n", nTotal-1, nTotal, Abc_AbsInt(n) );
+    fprintf( pFile, "    wire [%d:0] m = i * c;\n",   nTotal-1 );
+    fprintf( pFile, "    assign o = s %c m;\n",       n < 0 ? '-' : '+' );
+    fprintf( pFile, "endmodule\n\n" );
+}
 void Macc_ConstMultSpecOne( FILE * pFile, int n, int nBits, int nWidth )
 {
     int nTotal = nWidth+nBits;
@@ -76,9 +92,9 @@ void Macc_ConstMultSpecTest()
     FILE * pFile;
     for ( i = -Bound; i < Bound; i++ )
     {
-        sprintf( Buffer, "const_mul//spec%03d.v", 0xFF & i );
+        sprintf( Buffer, "const_mul//macc_spec_%03d.v", 0xFF & i );
         pFile = fopen( Buffer, "wb" );
-        Macc_ConstMultSpecOne( pFile, i, nBits, nWidth );
+        Macc_ConstMultSpecOne2( pFile, i, nBits, nWidth );
         fclose( pFile );
     }
 }
@@ -272,6 +288,28 @@ void Macc_ConstMultGenMacc( FILE * pFile, unsigned * p, int n, int nBits, int nW
     }
     fprintf( pFile, "endmodule\n\n" );
 }
+void Macc_ConstMultGenMacc2( FILE * pFile, unsigned * p, int n, int nBits, int nWidth )
+{
+    int nTotal = nWidth+nBits;
+    int Bound  = 1 << (nBits-1);
+    char Sign  = n < 0 ? 'N' : 'n';
+    assert( -Bound <= n && n < Bound );
+    fprintf( pFile, "// %d-bit multiplier-accumulator by constant %d generated by ABC on %s\n", nTotal, n, Extra_TimeStamp() );
+    fprintf( pFile, "module macc%03d%s (\n", Abc_AbsInt(n), n < 0 ? "_neg" : "_pos" );
+    fprintf( pFile, "    input  [%d:0] i,\n", nTotal-1 );
+    fprintf( pFile, "    input  [%d:0] s,\n", nTotal-1 );
+    fprintf( pFile, "    output [%d:0] o\n", nTotal-1 );
+    fprintf( pFile, ");\n" );
+    if ( n == 0 )
+        fprintf( pFile, "    assign o = s;\n" );
+    else 
+    {
+        fprintf( pFile, "    wire [%d:0] n1 = i;\n", nTotal-1 );
+        Macc_ConstMultGenOne_rec( pFile, p, n, nBits, nWidth );
+        fprintf( pFile, "    assign o = s + %c%d;\n", Sign, Abc_AbsInt(n) );
+    }
+    fprintf( pFile, "endmodule\n\n" );
+}
 void Macc_ConstMultGenTest()
 {
     int nBits  =  8;
@@ -285,7 +323,7 @@ void Macc_ConstMultGenTest()
     {
         sprintf( Buffer, "const_mul//macc%03d.v", 0xFF & i );
         pFile = fopen( Buffer, "wb" );
-        Macc_ConstMultGenMacc( pFile, p, i, nBits, nWidth );
+        Macc_ConstMultGenMacc2( pFile, p, i, nBits, nWidth );
         fclose( pFile );
     }
     ABC_FREE( p );
diff --git a/src/misc/extra/module.make b/src/misc/extra/module.make
index 4ab13038..05bc5e08 100644
--- a/src/misc/extra/module.make
+++ b/src/misc/extra/module.make
@@ -5,6 +5,7 @@ SRC +=    src/misc/extra/extraUtilBitMatrix.c \
     src/misc/extra/extraUtilDsd.c \
     src/misc/extra/extraUtilEnum.c \
     src/misc/extra/extraUtilFile.c \
+    src/misc/extra/extraUtilGen.c \
     src/misc/extra/extraUtilMacc.c \
     src/misc/extra/extraUtilMaj.c \
     src/misc/extra/extraUtilMemory.c \