Adding gem5 source to svn.

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1819 8c4709b5-6ec9-48aa-a5cd-a96041d1645a
2012-10-24 19:18:57 +00:00
parent f7ff71bd46
commit b41eec3f65
3222 changed files with 658579 additions and 1 deletions
--- a/simulators/gem5/src/sim/tlb.hh
+++ b/simulators/gem5/src/sim/tlb.hh
@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2011 ARM Limited
+ * All rights reserved.
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder.  You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
+ *
+ * Copyright (c) 2006 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * 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 __SIM_TLB_HH__
+#define __SIM_TLB_HH__
+
+#include "base/misc.hh"
+#include "mem/request.hh"
+#include "sim/fault_fwd.hh"
+#include "sim/sim_object.hh"
+
+class ThreadContext;
+class MasterPort;
+
+class BaseTLB : public SimObject
+{
+  protected:
+    BaseTLB(const Params *p)
+        : SimObject(p)
+    {}
+
+  public:
+    enum Mode { Read, Write, Execute };
+
+  public:
+    virtual void demapPage(Addr vaddr, uint64_t asn) = 0;
+
+    /**
+     * Get the table walker master port if present. This is used for
+     * migrating port connections during a CPU takeOverFrom()
+     * call. For architectures that do not have a table walker, NULL
+     * is returned, hence the use of a pointer rather than a
+     * reference.
+     *
+     * @return A pointer to the walker master port or NULL if not present
+     */
+    virtual MasterPort* getMasterPort() { return NULL; }
+
+    class Translation
+    {
+      public:
+        virtual ~Translation()
+        {}
+
+        /**
+         * Signal that the translation has been delayed due to a hw page table
+         * walk.
+         */
+        virtual void markDelayed() = 0;
+
+        /*
+         * The memory for this object may be dynamically allocated, and it may
+         * be responsible for cleaning itself up which will happen in this
+         * function. Once it's called, the object is no longer valid.
+         */
+        virtual void finish(Fault fault, RequestPtr req, ThreadContext *tc,
+                            Mode mode) = 0;
+    };
+};
+
+class GenericTLB : public BaseTLB
+{
+  protected:
+    GenericTLB(const Params *p)
+        : BaseTLB(p)
+    {}
+
+  public:
+    void demapPage(Addr vaddr, uint64_t asn);
+
+    Fault translateAtomic(RequestPtr req, ThreadContext *tc, Mode mode);
+    void translateTiming(RequestPtr req, ThreadContext *tc,
+                         Translation *translation, Mode mode);
+};
+
+#endif // __ARCH_SPARC_TLB_HH__