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Add support for task output and inout ports.

This commit is contained in:
steve 1999-07-24 19:19:06 +00:00
parent 93a77a2efd
commit fc8a6c52f8
1 changed files with 28 additions and 6 deletions
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34
elaborate.cc
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@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: elaborate.cc,v 1.59 1999/07/24 02:11:20 steve Exp $"
#ident "$Id: elaborate.cc,v 1.60 1999/07/24 19:19:06 steve Exp $"
#endif
/*
@ -1592,7 +1592,9 @@ NetProc* PCallTask::elaborate_usr(Design*des, const string&path) const
NetBlock*block = new NetBlock(NetBlock::SEQU);
/* Generate assignment statement statements for the input and
INOUT ports of the task. */
INOUT ports of the task. These are managed by writing
assignments with the task port the l-value and the passed
expression the r-value. */
for (unsigned idx = 0 ; idx < nparms() ; idx += 1) {
NetNet*port = def->port(idx);
@ -1613,7 +1615,9 @@ NetProc* PCallTask::elaborate_usr(Design*des, const string&path) const
block->append(cur);
/* Generate assignment statement statements for the output and
INOUT ports of the task. */
INOUT ports of the task. The r-value in this case is the
expression passed as a parameter, and the l-value is the
port to be copied out. */
for (unsigned idx = 0 ; idx < nparms() ; idx += 1) {
NetNet*port = def->port(idx);
@ -1621,9 +1625,24 @@ NetProc* PCallTask::elaborate_usr(Design*des, const string&path) const
if (port->port_type() == NetNet::PINPUT)
continue;
cerr << get_line() << ": Sorry, output ports not yet "
"implemented." << endl;
des->errors += 1;
/* Elaborate the parameter expression as a net so that
it can be used as an l-value. */
NetNet*val = parms_[idx]->elaborate_net(des, path);
assert(val);
assert(val->pin_count() == port->pin_count());
/* Make an expression out of the actual task port. */
NetESignal*sig = new NetESignal(port);
/* Generate the assignment statement. */
NetAssign*ass = new NetAssign("@", des, val->pin_count(), sig);
for (unsigned pi = 0 ; pi < val->pin_count() ; pi += 1)
connect(val->pin(pi), ass->pin(pi));
des->add_node(sig);
des->add_node(ass);
block->append(ass);
}
return block;
@ -1950,6 +1969,9 @@ Design* elaborate(const map<string,Module*>&modules,
/*
* $Log: elaborate.cc,v $
* Revision 1.60 1999/07/24 19:19:06 steve
* Add support for task output and inout ports.
*
* Revision 1.59 1999/07/24 02:11:20 steve
* Elaborate task input ports.
*