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Handle unpacked arrays as output ports.

This commit is contained in:
Stephen Williams 2014-03-23 16:53:38 -07:00
parent fc1f9ac6a5
commit e55e832ea0
2 changed files with 25 additions and 8 deletions
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25
elaborate.cc
View File

@ -1570,12 +1570,31 @@ void PGModule::elaborate_mod_(Design*des, Module*rmod, NetScope*scope) const
} else {
// For now, do not support unpacked array outputs.
ivl_assert(*this, prts[0]->unpacked_dimensions()==0);
/* Port type must be OUTPUT here. */
ivl_assert(*this, prts[0]->port_type() == NetNet::POUTPUT);
// Special case: If the output port is an unpacked
// array, then there should be no sub-ports and
// the passed pexxpression is processed
// differently. Note that we are calling it the
// "r-value" expression, but since this is an
// output port, we assign to it from the internal object.
if (prts[0]->pin_count() > 1) {
ivl_assert(*this, prts.size()==1);
PEIdent*rval_pident = dynamic_cast<PEIdent*>(pins[idx]);
ivl_assert(*this, rval_pident);
NetNet*rval_net = rval_pident->elaborate_unpacked_net(des, scope);
ivl_assert(*this, rval_net->pin_count() == prts[0]->pin_count());
assign_unpacked_with_bufz(des, scope, this, rval_net, prts[0]);
continue;
}
// At this point, arrays are handled.
ivl_assert(*this, prts[0]->unpacked_dimensions()==0);
/* Output from module. Elaborate the port
expression as the l-value of a continuous
assignment, as the port will continuous assign

8
parse.y
View File

@ -3882,6 +3882,8 @@ port_declaration
| attribute_list_opt K_output net_type_opt data_type_or_implicit IDENTIFIER dimensions_opt
{ Module::port_t*ptmp;
perm_string name = lex_strings.make($5);
data_type_t*use_dtype = $4;
if ($6) use_dtype = new uarray_type_t(use_dtype, $6);
NetNet::Type use_type = $3;
if (use_type == NetNet::IMPLICIT) {
if (vector_type_t*dtype = dynamic_cast<vector_type_t*> ($4)) {
@ -3903,15 +3905,11 @@ port_declaration
}
}
ptmp = pform_module_port_reference(name, @2.text, @2.first_line);
pform_module_define_port(@2, name, NetNet::POUTPUT, use_type, $4, $1);
pform_module_define_port(@2, name, NetNet::POUTPUT, use_type, use_dtype, $1);
port_declaration_context.port_type = NetNet::POUTPUT;
port_declaration_context.port_net_type = use_type;
port_declaration_context.data_type = $4;
delete[]$5;
if ($6) {
yyerror(@6, "sorry: Output ports with unpacked dimensions not supported.");
delete $6;
}
$$ = ptmp;
}
| attribute_list_opt