Generate fake adder code in vvm.

steveicarus · Sep 4, 1999 · 555d447 · 555d447
1 parent 41a1c6b
commit 555d447
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Showing 2 changed files with 23 additions and 2 deletions.
diff --git a/netlist.cc b/netlist.cc
@@ -17,7 +17,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #if !defined(WINNT)
-#ident "$Id: netlist.cc,v 1.56 1999/09/03 04:28:38 steve Exp $"
+#ident "$Id: netlist.cc,v 1.57 1999/09/04 01:57:15 steve Exp $"
 #endif
 
 # include  <cassert>
@@ -329,6 +329,11 @@ NetAddSub::~NetAddSub()
 {
 }
 
+unsigned NetAddSub::width()const
+{
+      return (pin_count() - 6) / 3;
+}
+
 NetObj::Link& NetAddSub::pin_DataA(unsigned idx)
 {
       idx = 6 + idx*3;
@@ -1749,6 +1754,9 @@ NetNet* Design::find_signal(bool (*func)(const NetNet*))
 
 /*
  * $Log: netlist.cc,v $
+ * Revision 1.57  1999/09/04 01:57:15  steve
+ *  Generate fake adder code in vvm.
+ *
  * Revision 1.56  1999/09/03 04:28:38  steve
  *  elaborate the binary plus operator.
  *

diff --git a/t-vvm.cc b/t-vvm.cc
@@ -17,7 +17,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #if !defined(WINNT)
-#ident "$Id: t-vvm.cc,v 1.37 1999/09/01 20:46:19 steve Exp $"
+#ident "$Id: t-vvm.cc,v 1.38 1999/09/04 01:57:15 steve Exp $"
 #endif
 
 # include  <iostream>
@@ -44,6 +44,9 @@ class target_vvm : public target_t {
       virtual void memory(ostream&os, const NetMemory*);
       virtual void task_def(ostream&os, const NetTaskDef*);
       virtual void func_def(ostream&os, const NetFuncDef*);
+
+      virtual void lpm_add_sub(ostream&os, const NetAddSub*);
+
       virtual void logic(ostream&os, const NetLogic*);
       virtual void bufz(ostream&os, const NetBUFZ*);
       virtual void udp(ostream&os, const NetUDP*);
@@ -607,6 +610,13 @@ void target_vvm::emit_gate_outputfun_(const NetNode*gate)
       delayed << "}" << endl;
 }
 
+void target_vvm::lpm_add_sub(ostream&os, const NetAddSub*gate)
+{
+      os << "#error \"adders not yet supported in vvm.\"" << endl;
+      os << "static vvm_add_sub<" << gate->width() << "> " <<
+	    mangle(gate->name()) << ";" << endl;
+}
+
 void target_vvm::logic(ostream&os, const NetLogic*gate)
 {
       os << "static void " << mangle(gate->name()) <<
@@ -1401,6 +1411,9 @@ extern const struct target tgt_vvm = {
 };
 /*
  * $Log: t-vvm.cc,v $
+ * Revision 1.38  1999/09/04 01:57:15  steve
+ *  Generate fake adder code in vvm.
+ *
  * Revision 1.37  1999/09/01 20:46:19  steve
  *  Handle recursive functions and arbitrary function
  *  references to other functions, properly pass