diff options
Diffstat (limited to 'backends/blif')
| -rw-r--r-- | backends/blif/blif.cc | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/backends/blif/blif.cc b/backends/blif/blif.cc index 18f76f7e..fa5f7bca 100644 --- a/backends/blif/blif.cc +++ b/backends/blif/blif.cc @@ -38,12 +38,13 @@ struct BlifDumperConfig bool impltf_mode; bool gates_mode; bool param_mode; + bool blackbox_mode; std::string buf_type, buf_in, buf_out; std::map<RTLIL::IdString, std::pair<RTLIL::IdString, RTLIL::IdString>> unbuf_types; std::string true_type, true_out, false_type, false_out; - BlifDumperConfig() : icells_mode(false), conn_mode(false), impltf_mode(false), gates_mode(false), param_mode(false) { } + BlifDumperConfig() : icells_mode(false), conn_mode(false), impltf_mode(false), gates_mode(false), param_mode(false), blackbox_mode(false) { } }; struct BlifDumper @@ -130,6 +131,12 @@ struct BlifDumper } f << stringf("\n"); + if (module->get_bool_attribute("\\blackbox")) { + f << stringf(".blackbox\n"); + f << stringf(".end\n"); + return; + } + if (!config->impltf_mode) { if (!config->false_type.empty()) f << stringf(".%s %s %s=$false\n", subckt_or_gate(config->false_type), @@ -314,6 +321,9 @@ struct BlifBackend : public Backend { log(" -param\n"); log(" use the non-standard .param statement to write module parameters\n"); log("\n"); + log(" -blackbox\n"); + log(" write blackbox cells with .blackbox statement.\n"); + log("\n"); log(" -impltf\n"); log(" do not write definitions for the $true and $false wires.\n"); log("\n"); @@ -374,6 +384,10 @@ struct BlifBackend : public Backend { config.param_mode = true; continue; } + if (args[argidx] == "-blackbox") { + config.blackbox_mode = true; + continue; + } if (args[argidx] == "-impltf") { config.impltf_mode = true; continue; @@ -394,7 +408,7 @@ struct BlifBackend : public Backend { for (auto module_it : design->modules_) { RTLIL::Module *module = module_it.second; - if (module->get_bool_attribute("\\blackbox")) + if (module->get_bool_attribute("\\blackbox") && !config.blackbox_mode) continue; if (module->processes.size() != 0) |