From 3f22f48eeb98eb3407f735a3fd254c49043902e9 Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Wed, 4 Oct 2017 18:30:42 +0200
Subject: [PATCH] Add blackbox command

---
 passes/cmds/Makefile.inc |  1 +
 passes/cmds/blackbox.cc  | 81 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 82 insertions(+)
 create mode 100644 passes/cmds/blackbox.cc

diff --git a/passes/cmds/Makefile.inc b/passes/cmds/Makefile.inc
index 1dbb439ca..9e3934e16 100644
--- a/passes/cmds/Makefile.inc
+++ b/passes/cmds/Makefile.inc
@@ -27,4 +27,5 @@ OBJS += passes/cmds/qwp.o
 OBJS += passes/cmds/edgetypes.o
 OBJS += passes/cmds/chformal.o
 OBJS += passes/cmds/chtype.o
+OBJS += passes/cmds/blackbox.o
 
diff --git a/passes/cmds/blackbox.cc b/passes/cmds/blackbox.cc
new file mode 100644
index 000000000..497b35f5c
--- /dev/null
+++ b/passes/cmds/blackbox.cc
@@ -0,0 +1,81 @@
+/*
+ *  yosys -- Yosys Open SYnthesis Suite
+ *
+ *  Copyright (C) 2012  Clifford Wolf <clifford@clifford.at>
+ *
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include "kernel/yosys.h"
+
+USING_YOSYS_NAMESPACE
+PRIVATE_NAMESPACE_BEGIN
+
+struct BlackboxPass : public Pass {
+	BlackboxPass() : Pass("blackbox", "change type of cells in the design") { }
+	virtual void help()
+	{
+		//   |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
+		log("\n");
+		log("    blackbox [options] [selection]\n");
+		log("\n");
+		log("Convert modules into blackbox modules (remove contents and set the blackbox\n");
+		log("module attribute).\n");
+		log("\n");
+	}
+	virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
+	{
+		size_t argidx;
+		for (argidx = 1; argidx < args.size(); argidx++)
+		{
+			// if (args[argidx] == "-???") {
+			// 	continue;
+			// }
+			break;
+		}
+		extra_args(args, argidx, design);
+
+		for (auto module : design->selected_whole_modules_warn())
+		{
+			pool<Cell*> remove_cells;
+			pool<Wire*> remove_wires;
+
+			for (auto cell : module->cells())
+				remove_cells.insert(cell);
+
+			for (auto wire : module->wires())
+				if (wire->port_id == 0)
+					remove_wires.insert(wire);
+
+			for (auto it = module->memories.begin(); it != module->memories.end(); ++it)
+				delete it->second;
+			module->memories.clear();
+
+			for (auto it = module->processes.begin(); it != module->processes.end(); ++it)
+				delete it->second;
+			module->processes.clear();
+
+			module->new_connections(std::vector<RTLIL::SigSig>());
+
+			for (auto cell : remove_cells)
+				module->remove(cell);
+
+			module->remove(remove_wires);
+
+			module->set_bool_attribute("\\blackbox");
+		}
+	}
+} BlackboxPass;
+
+PRIVATE_NAMESPACE_END
-- 
2.30.2