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select correct bit when reg has non-zero lsb.

This commit is contained in:
steve 2000-03-20 16:57:22 +00:00
parent 94270ff988
commit 44d30ad127
1 changed files with 14 additions and 2 deletions
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16
elab_expr.cc
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@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/ */
#if !defined(WINNT) && !defined(macintosh) #if !defined(WINNT) && !defined(macintosh)
#ident "$Id: elab_expr.cc,v 1.18 2000/03/12 18:22:11 steve Exp $" #ident "$Id: elab_expr.cc,v 1.19 2000/03/20 16:57:22 steve Exp $"
#endif #endif
@ -300,10 +300,19 @@ NetExpr* PEIdent::elaborate_expr(Design*des, NetScope*scope) const
if (msb_ && (msn = msb_->eval_const(des, scope->name()))) { if (msb_ && (msn = msb_->eval_const(des, scope->name()))) {
assert(idx_ == 0); assert(idx_ == 0);
unsigned long msv = msn->as_ulong(); unsigned long msv = msn->as_ulong();
unsigned idx = net->sb_to_idx(msv);
if (idx >= net->pin_count()) {
cerr << get_line() << ": internal error: "
<< "bit " << msv << " out of range of net "
<< net->name() << "[" << net->msb()
<< ":" << net->lsb() << "]." << endl;
return 0;
}
string tname = des->local_symbol(scope->name()); string tname = des->local_symbol(scope->name());
NetTmp*tsig = new NetTmp(tname); NetTmp*tsig = new NetTmp(tname);
connect(tsig->pin(0), net->pin(msv)); connect(tsig->pin(0), net->pin(idx));
NetESignal*tmp = new NetESignal(tsig); NetESignal*tmp = new NetESignal(tsig);
tmp->set_line(*this); tmp->set_line(*this);
@ -440,6 +449,9 @@ NetEUnary* PEUnary::elaborate_expr(Design*des, NetScope*scope) const
/* /*
* $Log: elab_expr.cc,v $ * $Log: elab_expr.cc,v $
* Revision 1.19 2000/03/20 16:57:22 steve
* select correct bit when reg has non-zero lsb.
*
* Revision 1.18 2000/03/12 18:22:11 steve * Revision 1.18 2000/03/12 18:22:11 steve
* Binary and unary operators in parameter expressions. * Binary and unary operators in parameter expressions.
* *