From dab5999621a91982f9a7257b9f3467a9e72d5012 Mon Sep 17 00:00:00 2001
From: steve <steve>
Date: Wed, 26 Apr 2000 18:35:11 +0000
Subject: [PATCH]  Handle assigning small values to big registers.

---
 t-vvm.cc          | 18 ++++++++++++++++--
 vvm/vvm_signal.cc | 17 ++++++++++++++++-
 vvm/vvm_signal.h  | 11 +++++++----
 3 files changed, 39 insertions(+), 7 deletions(-)

diff --git a/t-vvm.cc b/t-vvm.cc
index 9b5eb16c9..a9a72d4b2 100644
--- 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) && !defined(macintosh)
-#ident "$Id: t-vvm.cc,v 1.139 2000/04/23 03:45:24 steve Exp $"
+#ident "$Id: t-vvm.cc,v 1.140 2000/04/26 18:35:11 steve Exp $"
 #endif
 
 # include  <iostream>
@@ -1885,12 +1885,23 @@ void target_vvm::proc_assign(ostream&os, const NetAssign*net)
 	    defn << "      }" << endl;
 
       } else {
-	    for (unsigned idx = 0 ;  idx < net->pin_count() ;  idx += 1) {
+	    unsigned min_count = net->pin_count();
+	    if (net->rval()->expr_width() < min_count)
+		  min_count = net->rval()->expr_width();
+
+	    for (unsigned idx = 0 ;  idx < min_count ;  idx += 1) {
 		  string nexus = nexus_from_link(&net->pin(idx));
 		  unsigned ncode = nexus_wire_map[nexus];
 		  defn << "      nexus_wire_table["<<ncode<<"].reg_assign("
 		       << rval << "[" << idx << "]);" << endl;
 	    }
+
+	    for (unsigned idx = min_count; idx < net->pin_count(); idx += 1) {
+		  string nexus = nexus_from_link(&net->pin(idx));
+		  unsigned ncode = nexus_wire_map[nexus];
+		  defn << "      nexus_wire_table["<<ncode<<"]"
+		       << ".reg_assign(St0);" << endl;
+	    }
       }
 }
 
@@ -2676,6 +2687,9 @@ extern const struct target tgt_vvm = {
 };
 /*
  * $Log: t-vvm.cc,v $
+ * Revision 1.140  2000/04/26 18:35:11  steve
+ *  Handle assigning small values to big registers.
+ *
  * Revision 1.139  2000/04/23 03:45:24  steve
  *  Add support for the procedural release statement.
  *
diff --git a/vvm/vvm_signal.cc b/vvm/vvm_signal.cc
index 7dd4b5ad5..eb6f6cce1 100644
--- a/vvm/vvm_signal.cc
+++ b/vvm/vvm_signal.cc
@@ -17,7 +17,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #if !defined(WINNT) && !defined(macintosh)
-#ident "$Id: vvm_signal.cc,v 1.4 2000/03/26 16:55:41 steve Exp $"
+#ident "$Id: vvm_signal.cc,v 1.5 2000/04/26 18:35:12 steve Exp $"
 #endif
 
 # include  "vvm_signal.h"
@@ -27,6 +27,18 @@ vvm_bitset_t::~vvm_bitset_t()
 {
 }
 
+vpip_bit_t&vvm_bitset_t::operator[] (unsigned idx)
+{
+      assert(idx < nbits);
+      return bits[idx];
+}
+
+vpip_bit_t vvm_bitset_t::get_bit(unsigned idx) const
+{
+      assert(idx < nbits);
+      return bits[idx];
+}
+
 unsigned vvm_bitset_t::as_unsigned() const
 {
       unsigned result = 0;
@@ -82,6 +94,9 @@ vvm_ram_callback::~vvm_ram_callback()
 
 /*
  * $Log: vvm_signal.cc,v $
+ * Revision 1.5  2000/04/26 18:35:12  steve
+ *  Handle assigning small values to big registers.
+ *
  * Revision 1.4  2000/03/26 16:55:41  steve
  *  Remove the vvm_bits_t abstract class.
  *
diff --git a/vvm/vvm_signal.h b/vvm/vvm_signal.h
index e2033909e..e76a1f6d7 100644
--- a/vvm/vvm_signal.h
+++ b/vvm/vvm_signal.h
@@ -19,7 +19,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #if !defined(WINNT) && !defined(macintosh)
-#ident "$Id: vvm_signal.h,v 1.8 2000/03/26 16:55:41 steve Exp $"
+#ident "$Id: vvm_signal.h,v 1.9 2000/04/26 18:35:12 steve Exp $"
 #endif
 
 # include  "vvm.h"
@@ -42,11 +42,11 @@ class vvm_bitset_t  {
 
       ~vvm_bitset_t();
 
-      vpip_bit_t operator[] (unsigned idx) const { return bits[idx]; }
-      vpip_bit_t&operator[] (unsigned idx) { return bits[idx]; }
+      vpip_bit_t operator[] (unsigned idx) const { return get_bit(idx); }
+      vpip_bit_t&operator[] (unsigned idx);
 
       unsigned get_width() const { return nbits; }
-      vpip_bit_t get_bit(unsigned idx) const { return bits[idx]; }
+      vpip_bit_t get_bit(unsigned idx) const;
 
       unsigned as_unsigned() const;
 
@@ -154,6 +154,9 @@ class vvm_memory_t : public __vpiMemory {
 
 /*
  * $Log: vvm_signal.h,v $
+ * Revision 1.9  2000/04/26 18:35:12  steve
+ *  Handle assigning small values to big registers.
+ *
  * Revision 1.8  2000/03/26 16:55:41  steve
  *  Remove the vvm_bits_t abstract class.
  *