tlm: Initial import of tlm/gem5 bridge code.

This is a slightly mangled version of the existing bridge code in
util/tlm/src/. The changes fix some small style issues, change to gem5
specific include paths, and removes the Gem5SimControl code. That code
coordinates gem5 with the external systemc kernel, and in this usage
there's no external kernel.

The code imported here compiles, but it isn't yet expected to work.

Change-Id: I9c593a52e2554534720d21cd31a03e543ad897ad
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/17231
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/src/systemc/tlm_bridge/sc_ext.hh b/src/systemc/tlm_bridge/sc_ext.hh
new file mode 100644
index 000000000..413c6106f
--- /dev/null
+++ b/src/systemc/tlm_bridge/sc_ext.hh
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2015, University of Kaiserslautern
+ * Copyright (c) 2016, Dresden University of Technology (TU Dresden)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ * 2. 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.
+ *
+ * 3. Neither the name of the copyright holder 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 HOLDER
+ * 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:
+ *    Matthias Jung
+ *    Christian Menard
+ */
+
+#ifndef __SYSTEMC_TLM_BRIDGE_SC_EXT_HH__
+#define __SYSTEMC_TLM_BRIDGE_SC_EXT_HH__
+
+#include "mem/packet.hh"
+#include "systemc/ext/tlm_core/2/generic_payload/gp.hh"
+
+namespace Gem5SystemC
+{
+
+class Gem5Extension: public tlm::tlm_extension<Gem5Extension>
+{
+  public:
+    Gem5Extension(PacketPtr _packet);
+
+    virtual tlm_extension_base *clone() const;
+    virtual void copy_from(const tlm_extension_base &ext);
+
+    static Gem5Extension &getExtension(
+            const tlm::tlm_generic_payload *payload);
+    static Gem5Extension &getExtension(
+            const tlm::tlm_generic_payload &payload);
+    PacketPtr getPacket();
+
+    bool isPipeThrough() const { return pipeThrough; }
+    void setPipeThrough() { pipeThrough = true; }
+
+  private:
+    PacketPtr packet;
+    bool pipeThrough;
+};
+
+} // namespace Gem5SystemC
+
+#endif // __SYSTEMC_TLM_BRIDGE_SC_EXT_HH__