gem5/src/mem/vport.hh
Ali Saidi bd367d4825 implement vtophys and 32bit gdb support
src/arch/alpha/vtophys.cc:
src/arch/alpha/vtophys.hh:
src/arch/sparc/arguments.hh:
    move Copy* to vport since it's generic for all the ISAs
src/arch/sparc/isa_traits.hh:
    the Solaris kernel sets up a virtual-> real mapping for all memory starting at SegKPMBase
src/arch/sparc/pagetable.hh:
    add a class for getting bits out of the TteTag
src/arch/sparc/remote_gdb.cc:
    add 32bit support kinda.... If its 32 bit
src/arch/sparc/remote_gdb.hh:
    Add 32bit register offsets too.
src/arch/sparc/tlb.cc:
    cleanup generation of tsb pointers
src/arch/sparc/tlb.hh:
    add function to return tsb pointers for an address
    make lookup public so vtophys can use it
src/arch/sparc/vtophys.cc:
src/arch/sparc/vtophys.hh:
    write vtophys for sparc
src/base/bitfield.hh:
    return a mask of bits first->last
src/mem/vport.cc:
src/mem/vport.hh:
    move Copy* here since it's ISA generic

--HG--
extra : convert_revision : c42c331e396c0d51a2789029d8e232fe66995d0f
2007-02-18 19:57:46 -05:00

86 lines
3.3 KiB
C++

/*
* 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: Ali Saidi
*/
/**
* @file
* Virtual Port Object Declaration. These ports incorporate some translation
* into their access methods. Thus you can use one to read and write data
* to/from virtual addresses.
*/
#ifndef __MEM_VPORT_HH__
#define __MEM_VPORT_HH__
#include "mem/port_impl.hh"
#include "config/full_system.hh"
#include "arch/vtophys.hh"
/** A class that translates a virtual address to a physical address and then
* calls the above read/write functions. If a thread context is provided the
* address can alway be translated, If not it can only be translated if it is a
* simple address masking operation (such as alpha super page accesses).
*/
class VirtualPort : public FunctionalPort
{
private:
ThreadContext *tc;
public:
VirtualPort(const std::string &_name, ThreadContext *_tc = NULL)
: FunctionalPort(_name), tc(_tc)
{}
/** Return true if we have an thread context. This is used to
* prevent someone from accidently deleting the cpus statically
* allocated vport.
* @return true if a thread context isn't valid
*/
bool nullThreadContext() { return tc != NULL; }
/** Version of readblob that translates virt->phys and deals
* with page boundries. */
virtual void readBlob(Addr addr, uint8_t *p, int size);
/** Version of writeBlob that translates virt->phys and deals
* with page boundries. */
virtual void writeBlob(Addr addr, uint8_t *p, int size);
};
void CopyOut(ThreadContext *tc, void *dest, Addr src, size_t cplen);
void CopyIn(ThreadContext *tc, Addr dest, void *source, size_t cplen);
void CopyStringOut(ThreadContext *tc, char *dst, Addr vaddr, size_t maxlen);
void CopyStringIn(ThreadContext *tc, char *src, Addr vaddr);
#endif //__MEM_VPORT_HH__