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authorAndreas Sandberg <Andreas.Sandberg@ARM.com>2015-02-11 10:23:27 -0500
committerAndreas Sandberg <Andreas.Sandberg@ARM.com>2015-02-11 10:23:27 -0500
commit550c31849024a2184887df87aae39617ebfe0d6a (patch)
tree53cc5e91d0961b0215c614141fdc380b30c76951 /src/sim/tlb.hh
parent9e6f803254cbf3f5f491775debdc6593c3329da8 (diff)
downloadgem5-550c31849024a2184887df87aae39617ebfe0d6a.tar.xz
sim: Move the BaseTLB to src/arch/generic/
The TLB-related code is generally architecture dependent and should live in the arch directory to signify that. --HG-- rename : src/sim/BaseTLB.py => src/arch/generic/BaseTLB.py rename : src/sim/tlb.cc => src/arch/generic/tlb.cc rename : src/sim/tlb.hh => src/arch/generic/tlb.hh
Diffstat (limited to 'src/sim/tlb.hh')
-rw-r--r--src/sim/tlb.hh150
1 files changed, 0 insertions, 150 deletions
diff --git a/src/sim/tlb.hh b/src/sim/tlb.hh
deleted file mode 100644
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--- a/src/sim/tlb.hh
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-/*
- * 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/sim_object.hh"
-
-class ThreadContext;
-class BaseMasterPort;
-
-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;
-
- /**
- * Remove all entries from the TLB
- */
- virtual void flushAll() = 0;
-
- /**
- * Take over from an old tlb context
- */
- virtual void takeOverFrom(BaseTLB *otlb) = 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 BaseMasterPort* getMasterPort() { return NULL; }
-
- void memInvalidate() { flushAll(); }
-
- 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(const Fault &fault, RequestPtr req,
- ThreadContext *tc, Mode mode) = 0;
-
- /** This function is used by the page table walker to determine if it
- * should translate the a pending request or if the underlying request
- * has been squashed.
- * @ return Is the instruction that requested this translation squashed?
- */
- virtual bool squashed() const { return false; }
- };
-};
-
-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);
-
-
- /**
- * Do post-translation physical address finalization.
- *
- * This method is used by some architectures that need
- * post-translation massaging of physical addresses. For example,
- * X86 uses this to remap physical addresses in the APIC range to
- * a range of physical memory not normally available to real x86
- * implementations.
- *
- * @param req Request to updated in-place.
- * @param tc Thread context that created the request.
- * @param mode Request type (read/write/execute).
- * @return A fault on failure, NoFault otherwise.
- */
- Fault finalizePhysical(RequestPtr req, ThreadContext *tc, Mode mode) const;
-};
-
-#endif // __ARCH_SPARC_TLB_HH__