diff options
Diffstat (limited to 'backends')
| -rw-r--r-- | backends/verilog/verilog_backend.cc | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/backends/verilog/verilog_backend.cc b/backends/verilog/verilog_backend.cc index a4713cb0a..04a3c7643 100644 --- a/backends/verilog/verilog_backend.cc +++ b/backends/verilog/verilog_backend.cc @@ -923,6 +923,11 @@ struct VerilogBackend : public Backend { log(" without this option all internal cells are converted to verilog\n"); log(" expressions.\n"); log("\n"); + log(" -placeholders\n"); + log(" usually modules with the 'placeholder' attribute are ignored. with\n"); + log(" this option set only the modules with the 'placeholder' attribute\n"); + log(" are written to the output file.\n"); + log("\n"); } virtual void execute(FILE *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design) { @@ -933,6 +938,8 @@ struct VerilogBackend : public Backend { attr2comment = false; noexpr = false; + bool placeholders = false; + reg_ct.clear(); reg_ct.setup_stdcells_mem(); reg_ct.cell_types.insert("$sr"); @@ -958,16 +965,21 @@ struct VerilogBackend : public Backend { noexpr = true; continue; } + if (arg == "-placeholders") { + placeholders = true; + continue; + } break; } extra_args(f, filename, args, argidx); - for (auto it = design->modules.begin(); it != design->modules.end(); it++) { - log("Dumping module `%s'.\n", it->first.c_str()); - if (it != design->modules.begin()) - fprintf(f, "\n"); - dump_module(f, "", it->second); - } + for (auto it = design->modules.begin(); it != design->modules.end(); it++) + if ((it->second->attributes.count("\\placeholder") > 0) == placeholders) { + if (it != design->modules.begin()) + fprintf(f, "\n"); + log("Dumping module `%s'.\n", it->first.c_str()); + dump_module(f, "", it->second); + } reg_ct.clear(); } |