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Diffstat (limited to 'frontends/verilog/verilog_frontend.cc')
-rw-r--r--frontends/verilog/verilog_frontend.cc15
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)