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sdc: add help

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This commit is contained in:
Emil J. Tywoniak 2025-10-08 14:32:21 +02:00
parent a4dc0156bb
commit 35801c2aa1
1 changed files with 25 additions and 5 deletions
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30
passes/cmds/sdc/sdc.cc
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@ -773,15 +773,33 @@ public:
// Also see TclPass
struct SdcPass : public Pass {
// TODO help
void help() override
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" sdc [options] file\n");
log("\n");
log("Read the SDC file for the current design.\n");
log("\n");
log(" -dump\n");
log(" Dump the referenced design objects.\n");
log("\n");
log(" -dump-graph\n");
log(" Dump the uninterpreted call graph.\n");
log("\n");
log(" -keep_hierarchy\n");
log(" Add keep_hierarchy attributes while retaining SDC validity.\n");
log("\n");
}
SdcPass() : Pass("sdc", "sniff at some SDC") { }
void execute(std::vector<std::string> args, RTLIL::Design *design) override {
log_header(design, "Executing SDC pass.\n");
log_experimental("sdc");
size_t argidx;
bool dump_mode = false;
bool dump_graph_mode = false;
bool keep_hierarchy_mode = false;
std::vector<std::string> opensta_stubs_paths;
std::vector<std::string> stubs_paths;
for (argidx = 1; argidx < args.size(); argidx++) {
if (args[argidx] == "-dump") {
dump_mode = true;
@ -793,7 +811,7 @@ struct SdcPass : public Pass {
keep_hierarchy_mode = true;
continue;
} else if (args[argidx] == "-stubs" && argidx+1 < args.size()) {
opensta_stubs_paths.push_back(args[++argidx]);
stubs_paths.push_back(args[++argidx]);
continue;
}
break;
@ -801,7 +819,9 @@ struct SdcPass : public Pass {
if (argidx >= args.size())
log_cmd_error("Missing SDC file.\n");
std::string sdc_path = args[argidx];
std::string sdc_path = args[argidx++];
if (argidx < args.size())
log_cmd_error("Unexpected extra positional argument %s after SDC file %s.\n", args[argidx], sdc_path);
SDCInterpreter& sdc = SDCInterpreter::get();
Tcl_Interp *interp = sdc.fresh_interp(design);
Tcl_Preserve(interp);
@ -809,7 +829,7 @@ struct SdcPass : public Pass {
rewrite_filename(stub_path);
if (Tcl_EvalFile(interp, stub_path.c_str()) != TCL_OK)
log_cmd_error("SDC interpreter returned an error in stub preamble file: %s\n", Tcl_GetStringResult(interp));
for (auto path : opensta_stubs_paths)
for (auto path : stubs_paths)
if (Tcl_EvalFile(interp, path.c_str()) != TCL_OK)
log_cmd_error("SDC interpreter returned an error in OpenSTA stub file %s: %s\n", path.c_str(), Tcl_GetStringResult(interp));
if (Tcl_EvalFile(interp, sdc_path.c_str()) != TCL_OK)