a928a438b8
Used cppclean to help identify useless includes and removed them. This involved erroneously included headers, but also cases where forward declarations could have been used rather than a full include.
164 lines
5.4 KiB
C++
164 lines
5.4 KiB
C++
/*
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* Copyright (c) 2007 The Hewlett-Packard Development Company
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* All rights reserved.
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Gabe Black
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*/
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#ifndef __ARCH_X86_TLB_HH__
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#define __ARCH_X86_TLB_HH__
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#include <list>
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#include <vector>
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#include "arch/generic/tlb.hh"
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#include "arch/x86/pagetable.hh"
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#include "base/trie.hh"
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#include "mem/request.hh"
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#include "params/X86TLB.hh"
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class ThreadContext;
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namespace X86ISA
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{
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class Walker;
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class TLB : public BaseTLB
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{
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protected:
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friend class Walker;
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typedef std::list<TlbEntry *> EntryList;
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uint32_t configAddress;
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public:
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typedef X86TLBParams Params;
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TLB(const Params *p);
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void takeOverFrom(BaseTLB *otlb) override {}
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TlbEntry *lookup(Addr va, bool update_lru = true);
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void setConfigAddress(uint32_t addr);
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protected:
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EntryList::iterator lookupIt(Addr va, bool update_lru = true);
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Walker * walker;
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public:
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Walker *getWalker();
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void flushAll() override;
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void flushNonGlobal();
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void demapPage(Addr va, uint64_t asn) override;
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protected:
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uint32_t size;
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std::vector<TlbEntry> tlb;
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EntryList freeList;
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TlbEntryTrie trie;
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uint64_t lruSeq;
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Fault translateInt(RequestPtr req, ThreadContext *tc);
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Fault translate(RequestPtr req, ThreadContext *tc,
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Translation *translation, Mode mode,
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bool &delayedResponse, bool timing);
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public:
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void evictLRU();
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uint64_t
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nextSeq()
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{
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return ++lruSeq;
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}
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Fault translateAtomic(RequestPtr req, ThreadContext *tc, Mode mode);
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void translateTiming(RequestPtr req, ThreadContext *tc,
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Translation *translation, Mode mode);
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/** Stub function for compilation support of CheckerCPU. x86 ISA does
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* not support Checker model at the moment
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*/
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Fault translateFunctional(RequestPtr req, ThreadContext *tc, Mode mode);
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/**
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* Do post-translation physical address finalization.
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*
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* Some addresses, for example requests going to the APIC,
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* need post-translation updates. Such physical addresses are
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* remapped into a "magic" part of the physical address space
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* by this method.
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*
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* @param req Request to updated in-place.
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* @param tc Thread context that created the request.
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* @param mode Request type (read/write/execute).
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* @return A fault on failure, NoFault otherwise.
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*/
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Fault finalizePhysical(RequestPtr req, ThreadContext *tc,
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Mode mode) const;
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TlbEntry * insert(Addr vpn, TlbEntry &entry);
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// Checkpointing
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void serialize(CheckpointOut &cp) const override;
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void unserialize(CheckpointIn &cp) override;
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/**
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* Get the table walker master port. This is used for
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* migrating port connections during a CPU takeOverFrom()
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* call. For architectures that do not have a table walker,
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* NULL is returned, hence the use of a pointer rather than a
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* reference. For X86 this method will always return a valid
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* port pointer.
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*
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* @return A pointer to the walker master port
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*/
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BaseMasterPort *getMasterPort() override;
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};
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}
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#endif // __ARCH_X86_TLB_HH__
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