From 7764d0ba1dcf064ae487ee985c43083a0909e7f4 Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Sat, 5 Jan 2013 11:13:26 +0100
Subject: initial import

---
 passes/fsm/fsm.cc | 91 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 passes/fsm/fsm.cc

(limited to 'passes/fsm/fsm.cc')

diff --git a/passes/fsm/fsm.cc b/passes/fsm/fsm.cc
new file mode 100644
index 000000000..61322fbd3
--- /dev/null
+++ b/passes/fsm/fsm.cc
@@ -0,0 +1,91 @@
+/*
+ *  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/register.h"
+#include "kernel/log.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+struct FsmPass : public Pass {
+	FsmPass() : Pass("fsm") { }
+	virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
+	{
+		bool flag_nomap = false;
+		bool flag_norecode = false;
+		bool flag_expand = false;
+		bool flag_export = false;
+		std::string fm_set_fsm_file_opt;
+
+		log_header("Executing FSM pass (extract and optimize FSM).\n");
+		log_push();
+
+		size_t argidx;
+		for (argidx = 1; argidx < args.size(); argidx++) {
+			std::string arg = args[argidx];
+			if (arg == "-fm_set_fsm_file" && argidx+1 < args.size() && fm_set_fsm_file_opt.empty()) {
+				fm_set_fsm_file_opt = " -fm_set_fsm_file " + args[++argidx];
+				continue;
+			}
+			if (arg == "-norecode") {
+				flag_norecode = true;
+				continue;
+			}
+			if (arg == "-nomap") {
+				flag_nomap = true;
+				continue;
+			}
+			if (arg == "-expand") {
+				flag_expand = true;
+				continue;
+			}
+			if (arg == "-export") {
+				flag_export = true;
+				continue;
+			}
+			break;
+		}
+		extra_args(args, argidx, design);
+
+		Pass::call(design, "fsm_detect");
+		Pass::call(design, "fsm_extract");
+
+		Pass::call(design, "fsm_opt");
+		Pass::call(design, "opt_rmunused");
+		Pass::call(design, "fsm_opt");
+
+		if (flag_expand) {
+			Pass::call(design, "fsm_expand");
+			Pass::call(design, "opt_rmunused");
+			Pass::call(design, "fsm_opt");
+		}
+
+		if (!flag_norecode)
+			Pass::call(design, "fsm_recode" + fm_set_fsm_file_opt);
+		Pass::call(design, "fsm_info");
+
+		if (!flag_nomap)
+			Pass::call(design, "fsm_map");
+
+		if (flag_export)
+			Pass::call(design, "fsm_export");
+
+		log_pop();
+	}
+} FsmPass;
+ 
-- 
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