From 5872389715a194dd91b17e46b770537415d50e30 Mon Sep 17 00:00:00 2001
From: Gabe Black <gabeblack@google.com>
Date: Wed, 9 May 2018 18:42:03 -0700
Subject: systemc: Stub out the predefined channels.

Change-Id: Ie030aad26875bd49e54981ec1e9076b7b5af6630
Reviewed-on: https://gem5-review.googlesource.com/10839
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Gabe Black <gabeblack@google.com>
---
 src/systemc/ext/channel/sc_fifo.hh | 171 +++++++++++++++++++++++++++++++++++++
 1 file changed, 171 insertions(+)
 create mode 100644 src/systemc/ext/channel/sc_fifo.hh

(limited to 'src/systemc/ext/channel/sc_fifo.hh')

diff --git a/src/systemc/ext/channel/sc_fifo.hh b/src/systemc/ext/channel/sc_fifo.hh
new file mode 100644
index 000000000..668c6b8bd
--- /dev/null
+++ b/src/systemc/ext/channel/sc_fifo.hh
@@ -0,0 +1,171 @@
+/*
+ * Copyright 2018 Google, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#ifndef __SYSTEMC_EXT_CHANNEL_SC_FIFO_HH__
+#define __SYSTEMC_EXT_CHANNEL_SC_FIFO_HH__
+
+#include "../core/sc_module.hh" // for sc_gen_unique_name
+#include "../core/sc_prim.hh"
+#include "sc_fifo_in_if.hh"
+#include "sc_fifo_out_if.hh"
+#include "warn_unimpl.hh"
+
+namespace sc_core
+{
+
+class sc_port_base;
+class sc_event;
+
+template <class T>
+class sc_fifo : public sc_fifo_in_if<T>,
+                public sc_fifo_out_if<T>,
+                public sc_prim_channel
+{
+  public:
+    explicit sc_fifo(int size=16) :
+            sc_fifo_in_if<T>(), sc_fifo_out_if<T>(),
+            sc_prim_channel(sc_gen_unique_name("fifo"))
+    {}
+    explicit sc_fifo(const char *name, int size=16) :
+            sc_fifo_in_if<T>(), sc_fifo_out_if<T>(),
+            sc_prim_channel(name)
+    {}
+    virtual ~sc_fifo() {}
+
+    virtual void
+    register_port(sc_port_base &, const char *)
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+    }
+
+    virtual void
+    read(T &)
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+    }
+    virtual T
+    read()
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+        return *(T *)nullptr;
+    }
+    virtual bool
+    nb_read(T &)
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+        return false;
+    }
+    operator T()
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+        return *(T *)nullptr;
+    }
+
+    virtual void
+    write(const T &)
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+    }
+    virtual bool
+    nb_write(const T&)
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+        return false;
+    }
+    sc_fifo<T> &
+    operator = (const T &)
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+        return *this;
+    }
+
+    virtual const sc_event &
+    data_Written_event() const
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+        return *(const sc_event *)nullptr;
+    }
+    virtual const sc_event &
+    data_read_event() const
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+        return *(const sc_event *)nullptr;
+    }
+
+    virtual int
+    num_available() const
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+        return 0;
+    }
+    virtual int
+    num_free() const
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+        return 0;
+    }
+
+    virtual void
+    print(std::ostream & =std::cout) const
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+    }
+    virtual void
+    dump(std::ostream & =std::cout) const
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+    }
+    virtual const char *kind() const { return "sc_fifo"; }
+
+  protected:
+    virtual void
+    update()
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+    }
+
+  private:
+    // Disabled
+    sc_fifo(const sc_fifo<T> &) :
+            sc_fifo_in_if<T>(), sc_fifo_in_if<T>(), sc_prim_channel()
+    {}
+    sc_fifo &operator = (const sc_fifo<T> &) { return *this; }
+};
+
+template <class T>
+inline std::ostream &
+operator << (std::ostream &os, const sc_fifo<T> &)
+{
+    sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+    return os;
+}
+
+} // namespace sc_core
+
+#endif  //__SYSTEMC_EXT_CHANNEL_SC_FIFO_HH__
-- 
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