2367198921
Modifies the clone system call and adds execve system call. Requires allowing processes to steal thread contexts from other processes in the same system object and the ability to detach pieces of process state (such as MemState) to allow dynamic sharing.
102 lines
4.1 KiB
C++
102 lines
4.1 KiB
C++
/*
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* Copyright (c) 2011 ARM Limited
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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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* Copyright (c) 2001-2005 The Regents of The University of Michigan
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* All rights reserved.
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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: Ron Dreslinski
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* Ali Saidi
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* Andreas Hansson
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*/
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#ifndef __MEM_SE_TRANSLATING_PORT_PROXY_HH__
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#define __MEM_SE_TRANSLATING_PORT_PROXY_HH__
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#include "mem/port_proxy.hh"
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class PageTableBase;
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class Process;
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/**
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* @file
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* TranslatingPortProxy Object Declaration for SE.
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*
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* Port proxies are used when non structural entities need access to
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* the memory system. Proxy objects replace the previous
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* FunctionalPort, TranslatingPort and VirtualPort objects, which
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* provided the same functionality as the proxies, but were instances
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* of ports not corresponding to real structural ports of the
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* simulated system. Via the port proxies all the accesses go through
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* an actual port and thus are transparent to a potentially
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* distributed memory and automatically adhere to the memory map of
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* the system.
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*/
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class SETranslatingPortProxy : public PortProxy
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{
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public:
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enum AllocType {
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Always,
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Never,
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NextPage
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};
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private:
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PageTableBase *pTable;
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Process *process;
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AllocType allocating;
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public:
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SETranslatingPortProxy(MasterPort& port, Process* p, AllocType alloc);
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virtual ~SETranslatingPortProxy();
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void setPageTable(PageTableBase *p) { pTable = p; }
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void setProcess(Process *p) { process = p; }
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bool tryReadBlob(Addr addr, uint8_t *p, int size) const;
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bool tryWriteBlob(Addr addr, const uint8_t *p, int size) const;
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bool tryMemsetBlob(Addr addr, uint8_t val, int size) const;
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bool tryWriteString(Addr addr, const char *str) const;
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bool tryReadString(std::string &str, Addr addr) const;
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virtual void readBlob(Addr addr, uint8_t *p, int size) const;
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virtual void writeBlob(Addr addr, const uint8_t *p, int size) const;
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virtual void memsetBlob(Addr addr, uint8_t val, int size) const;
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void writeString(Addr addr, const char *str) const;
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void readString(std::string &str, Addr addr) const;
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};
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#endif // __MEM_SE_TRANSLATING_PORT_PROXY_HH__
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