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>

1 files changed, 90 insertions, 0 deletions

diff --git a/src/systemc/ext/channel/sc_buffer.hh b/src/systemc/ext/channel/sc_buffer.hh
new file mode 100644
index 000000000..153b60b10
--- /dev/null
+++ b/src/systemc/ext/channel/sc_buffer.hh
@@ -0,0 +1,90 @@
+/*
+ * 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_BUFFER_HH__
+#define __SYSTEMC_EXT_CHANNEL_SC_BUFFER_HH__
+
+#include "../core/sc_module.hh" // for sc_gen_unique_name
+#include "sc_signal.hh"
+#include "warn_unimpl.hh" // for warn_unimpl
+
+namespace sc_core
+{
+
+template <class T, sc_writer_policy WRITER_POLICY>
+class sc_buffer : public sc_signal<T, WRITER_POLICY>
+{
+  public:
+    sc_buffer() : sc_signal<T, WRITER_POLICY>(sc_gen_unique_name("buffer")) {}
+    explicit sc_buffer(const char *name) :
+            sc_signal<T, WRITER_POLICY>(sc_gen_unique_name(name))
+    {}
+
+    virtual void
+    write(const T&)
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+    }
+
+    sc_buffer<T, WRITER_POLICY> &
+    operator = (const T &)
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+        return *this;
+    }
+    sc_buffer<T, WRITER_POLICY> &
+    operator = (const sc_signal<T, WRITER_POLICY> &)
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+        return *this;
+    }
+    sc_buffer<T, WRITER_POLICY> &
+    operator = (const sc_buffer<T, WRITER_POLICY> &)
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+        return *this;
+    }
+
+    virtual const char *kind() const { return "sc_buffer"; }
+
+  protected:
+    virtual void
+    update()
+    {
+        sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
+    }
+
+  private:
+    // Disabled
+    sc_buffer(const sc_buffer<T, WRITER_POLICY> &) {}
+};
+
+} // namespace sc_core
+
+#endif  //__SYSTEMC_EXT_CHANNEL_SC_BUFFER_HH__