diff options
Diffstat (limited to 'frontends')
| -rw-r--r-- | frontends/verilog/verilog_frontend.cc | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/frontends/verilog/verilog_frontend.cc b/frontends/verilog/verilog_frontend.cc index 6e9c00d0..c70d6f30 100644 --- a/frontends/verilog/verilog_frontend.cc +++ b/frontends/verilog/verilog_frontend.cc @@ -106,6 +106,9 @@ struct VerilogFrontend : public Frontend { log(" ignore re-definitions of modules. (the default behavior is to\n"); log(" create an error message.)\n"); log("\n"); + log(" -setattr <attribute_name>\n"); + log(" set the specified attribute (to the value 1) on all loaded modules\n"); + log("\n"); log(" -Dname[=definition]\n"); log(" define the preprocessor symbol 'name' and set its optional value\n"); log(" 'definition'\n"); @@ -134,6 +137,7 @@ struct VerilogFrontend : public Frontend { bool flag_ignore_redef = false; std::map<std::string, std::string> defines_map; std::list<std::string> include_dirs; + std::list<std::string> attributes; frontend_verilog_yydebug = false; log_header("Executing Verilog-2005 frontend.\n"); @@ -195,6 +199,10 @@ struct VerilogFrontend : public Frontend { flag_ignore_redef = true; continue; } + if (arg == "-setattr" && argidx+1 < args.size()) { + attributes.push_back(RTLIL::escape_id(args[++argidx])); + continue; + } if (arg == "-D" && argidx+1 < args.size()) { std::string name = args[++argidx], value; size_t equal = name.find('=', 2); @@ -249,6 +257,13 @@ struct VerilogFrontend : public Frontend { frontend_verilog_yyparse(); frontend_verilog_yylex_destroy(); + for (auto &child : current_ast->children) { + log_assert(child->type == AST::AST_MODULE); + for (auto &attr : attributes) + if (child->attributes.count(attr) == 0) + child->attributes[attr] = AST::AstNode::mkconst_int(1, false); + } + AST::process(design, current_ast, flag_dump_ast1, flag_dump_ast2, flag_dump_vlog, flag_nolatches, flag_nomem2reg, flag_mem2reg, flag_lib, flag_noopt, flag_icells, flag_ignore_redef); if (!flag_nopp) |