diff options
Diffstat (limited to 'passes/hierarchy')
| -rw-r--r-- | passes/hierarchy/hierarchy.cc | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/passes/hierarchy/hierarchy.cc b/passes/hierarchy/hierarchy.cc index fd95b94b2..d8a628448 100644 --- a/passes/hierarchy/hierarchy.cc +++ b/passes/hierarchy/hierarchy.cc @@ -808,6 +808,30 @@ struct HierarchyPass : public Pass { if (mod_it.second->get_bool_attribute("\\top")) top_mod = mod_it.second; + if (top_mod != nullptr && top_mod->name.begins_with("$abstract")) { + IdString top_name = top_mod->name.substr(strlen("$abstract")); + + dict<RTLIL::IdString, RTLIL::Const> top_parameters; + for (auto ¶ : parameters) { + SigSpec sig_value; + if (!RTLIL::SigSpec::parse(sig_value, NULL, para.second)) + log_cmd_error("Can't decode value '%s'!\n", para.second.c_str()); + top_parameters[RTLIL::escape_id(para.first)] = sig_value.as_const(); + } + + top_mod = design->module(top_mod->derive(design, top_parameters)); + + if (top_mod != nullptr && top_mod->name != top_name) { + Module *m = top_mod->clone(); + m->name = top_name; + Module *old_mod = design->module(top_name); + if (old_mod) + design->remove(old_mod); + design->add(m); + top_mod = m; + } + } + if (top_mod == nullptr && auto_top_mode) { log_header(design, "Finding top of design hierarchy..\n"); dict<Module*, int> db; |