From aab7c75cb39e2bfab683f19a5b3689999d642e41 Mon Sep 17 00:00:00 2001
From: "Emil J. Tywoniak" <emil@tywoniak.eu>
Date: Wed, 30 Jul 2025 18:51:14 +0200
Subject: [PATCH] sdc: unknown handler experiment

---
 passes/cmds/sdc.cc    |  6 ++++--
 passes/cmds/stubs.sdc | 23 +++++++++++++++--------
 2 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/passes/cmds/sdc.cc b/passes/cmds/sdc.cc
index b01cbe025..bdb6ba975 100644
--- a/passes/cmds/sdc.cc
+++ b/passes/cmds/sdc.cc
@@ -266,6 +266,7 @@ static int sdc_get_ports_cmd(ClientData data, Tcl_Interp *interp, int objc, Tcl_
 	for (auto pat : patterns) {
 		bool found = false;
 		for (auto name : objects->design_ports) {
+			log("design port .%s. pat .%s.\n", name.c_str(), pat.c_str());
 			if (matches(name, pat, config)) {
 				found = true;
 				resolved.push_back(name);
@@ -384,7 +385,7 @@ public:
 			log_error("Tcl_Init() call failed - %s\n",Tcl_ErrnoMsg(Tcl_GetErrno()));
 
 		objects = std::make_unique<SdcObjects>(design);
-		objects->collect_mode = SdcObjects::CollectMode::FullConstraint;
+		objects->collect_mode = SdcObjects::CollectMode::SimpleGetter;
 		Tcl_CreateObjCommand(interp, "get_pins", sdc_get_pins_cmd, (ClientData) objects.get(), NULL);
 		Tcl_CreateObjCommand(interp, "get_ports", sdc_get_ports_cmd, (ClientData) objects.get(), NULL);
 		Tcl_CreateObjCommand(interp, "ys_track_typed_key", ys_track_typed_key_cmd, (ClientData) objects.get(), NULL);
@@ -396,7 +397,8 @@ public:
 struct SdcPass : public Pass {
 	// TODO help
 	SdcPass() : Pass("sdc", "sniff at some SDC") { }
-	void execute(std::vector<std::string> args, RTLIL::Design *design) override {
+void execute(std::vector<std::string> args, RTLIL::Design *design) override {
+		log_header(design, "Executing SDC pass.\n");
 		// if (args.size() < 2)
 		// 	log_cmd_error("Missing SDC file.\n");
 		// TODO optional extra stub file
diff --git a/passes/cmds/stubs.sdc b/passes/cmds/stubs.sdc
index 3466981c9..cf7c04fd5 100644
--- a/passes/cmds/stubs.sdc
+++ b/passes/cmds/stubs.sdc
@@ -7,15 +7,22 @@ proc is_suppressed {args} {
     return 0
 }
 
-proc create_clock {args} {
-    return "CLOCK@"
-}
-proc get_clocks {args} {
-    return "CLOCK@"
-}
-
-stub current_design
+# stub current_design
 #stub ys_track_typed_key
 stub ys_track_untyped_key
 stub ys_err_key
 stub ys_err_flag
+
+proc unknown {args} {
+    global sdc_call_index
+    global sdc_calls
+    if {![info exists index]} {
+        set sdc_call_index 0
+    }
+    if {![info exists sdc_calls]} {
+        set sdc_calls {}
+    }
+    incr sdc_call_index
+    lappend sdc_calls $args
+    return $sdc_call_index
+}
\ No newline at end of file