From 3bb9288d65f547085b79fbaffb7046f336ff7f59 Mon Sep 17 00:00:00 2001 From: Clifford Wolf Date: Sun, 7 Oct 2018 19:48:42 +0200 Subject: [PATCH] Improve Verific importer blackbox handling Signed-off-by: Clifford Wolf --- frontends/verific/verific.cc | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/frontends/verific/verific.cc b/frontends/verific/verific.cc index 06d98611a..dba3b0f0c 100644 --- a/frontends/verific/verific.cc +++ b/frontends/verific/verific.cc @@ -118,6 +118,18 @@ RTLIL::SigBit VerificImporter::net_map_at(Net *net) return net_map.at(net); } +bool is_blackbox(Netlist *nl) +{ + if (nl->IsBlackBox()) + return true; + + const char *attr = nl->GetAttValue("blackbox"); + if (attr != nullptr && strcmp(attr, "0")) + return true; + + return false; +} + void VerificImporter::import_attributes(dict &attributes, DesignObj *obj) { MapIter mi; @@ -709,7 +721,7 @@ void VerificImporter::import_netlist(RTLIL::Design *design, Netlist *nl, std::se netlist = nl; if (design->has(module_name)) { - if (!nl->IsOperator()) + if (!nl->IsOperator() && !is_blackbox(nl)) log_cmd_error("Re-definition of module `%s'.\n", nl->Owner()->Name()); return; } @@ -718,7 +730,7 @@ void VerificImporter::import_netlist(RTLIL::Design *design, Netlist *nl, std::se module->name = module_name; design->add(module); - if (nl->IsBlackBox()) { + if (is_blackbox(nl)) { log("Importing blackbox module %s.\n", RTLIL::id2cstr(module->name)); module->set_bool_attribute("\\blackbox"); } else {