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diff --git a/kernel/yosys.h b/kernel/yosys.h
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+++ b/kernel/yosys.h
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+/*
+ *  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.
+ *
+ */
+
+
+// *** NOTE TO THE READER ***
+//
+// Maybe you have just opened this file in the hope to learn more about the
+// Yosys API. Let me congratulate you on this great decision!  ;)
+//
+// If you want to know how the design is represented by Yosys in the memory,
+// you should read "kernel/rtlil.h".
+//
+// If you want to know how to register a command with Yosys, you could read
+// "kernel/register.h", but it would be easier to just look at a simple
+// example instead. A simple one would be "passes/cmds/log.cc".
+//
+// This header is very boring. It just defines some general things that
+// belong nowhere else and includes the interesting headers.
+//
+// Find more information in the "CodingReadme" file.
+
+
+#ifndef YOSYS_H
+#define YOSYS_H
+
+#include <map>
+#include <set>
+#include <vector>
+#include <string>
+#include <algorithm>
+#include <functional>
+#include <initializer_list>
+
+#include <sstream>
+#include <fstream>
+#include <istream>
+#include <ostream>
+#include <iostream>
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#define PRIVATE_NAMESPACE_BEGIN  namespace {
+#define PRIVATE_NAMESPACE_END    }
+
+#if 0
+#  define YOSYS_NAMESPACE_BEGIN  namespace Yosys {
+#  define YOSYS_NAMESPACE_END    }
+#  define YOSYS_NAMESPACE_PREFIX Yosys::
+#  define USING_YOSYS_NAMESPACE  using namespace Yosys;
+#else
+#  define YOSYS_NAMESPACE_BEGIN
+#  define YOSYS_NAMESPACE_END
+#  define YOSYS_NAMESPACE_PREFIX
+#  define USING_YOSYS_NAMESPACE
+#endif
+
+#if __cplusplus >= 201103L
+#  define OVERRIDE override
+#  define FINAL final
+#else
+#  define OVERRIDE
+#  define FINAL
+#endif
+
+YOSYS_NAMESPACE_BEGIN
+
+namespace RTLIL {
+	struct IdString;
+	struct SigSpec;
+	struct Wire;
+	struct Cell;
+}
+
+std::string stringf(const char *fmt, ...);
+std::string vstringf(const char *fmt, va_list ap);
+template<typename T> int SIZE(const T &obj) { return obj.size(); }
+int SIZE(RTLIL::Wire *wire);
+
+YOSYS_NAMESPACE_END
+
+#include "kernel/log.h"
+#include "kernel/rtlil.h"
+#include "kernel/register.h"
+
+YOSYS_NAMESPACE_BEGIN
+
+void yosys_setup();
+void yosys_shutdown();
+
+#ifdef YOSYS_ENABLE_TCL
+#include <tcl.h>
+Tcl_Interp *yosys_get_tcl_interp();
+#endif
+
+extern int autoidx;
+extern RTLIL::Design *yosys_design;
+
+RTLIL::IdString new_id(std::string file, int line, std::string func);
+
+#define NEW_ID \
+	YOSYS_NAMESPACE_PREFIX new_id(__FILE__, __LINE__, __FUNCTION__)
+
+#define ID(_str) \
+	([]() { static YOSYS_NAMESPACE_PREFIX RTLIL::IdString _id(_str); return _id; })()
+
+RTLIL::Design *yosys_get_design();
+std::string proc_self_dirname();
+std::string proc_share_dirname();
+const char *create_prompt(RTLIL::Design *design, int recursion_counter);
+
+void run_frontend(std::string filename, std::string command, RTLIL::Design *design, std::string *backend_command, std::string *from_to_label);
+void run_pass(std::string command, RTLIL::Design *design);
+void run_backend(std::string filename, std::string command, RTLIL::Design *design);
+void shell(RTLIL::Design *design);
+
+// from kernel/version_*.o (cc source generated from Makefile)
+extern const char *yosys_version_str;
+
+// from passes/cmds/design.cc
+extern std::map<std::string, RTLIL::Design*> saved_designs;
+extern std::vector<RTLIL::Design*> pushed_designs;
+
+// from passes/cmds/pluginc.cc
+extern std::map<std::string, void*> loaded_plugins;
+extern std::map<std::string, std::string> loaded_plugin_aliases;
+void load_plugin(std::string filename, std::vector<std::string> aliases);
+
+YOSYS_NAMESPACE_END
+
+#endif