process.hh

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/*
 * Copyright (c) 2007 The Hewlett-Packard Development Company
 * 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.
 *
 * 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
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 * this software without specific prior written permission.
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#ifndef __ARCH_X86_PROCESS_HH__
#define __ARCH_X86_PROCESS_HH__
 
#include <string>
#include <vector>
 
#include "arch/x86/pagetable.hh"
#include "mem/multi_level_page_table.hh"
#include "sim/aux_vector.hh"
#include "sim/process.hh"
 
namespace gem5
{
 
class SyscallDesc;
 
namespace X86ISA
{
    namespace auxv
    {
 
    enum X86AuxiliaryVectorTypes
    {
        Sysinfo = 32,
        SysinfoEhdr = 33
    };
 
    } // namespace auxv
 
    class X86Process : public Process
    {
      protected:
        Addr _gdtStart;
        Addr _gdtSize;
 
        X86Process(const ProcessParams &params, loader::ObjectFile *objFile);
 
        template<class IntType>
        void argsInit(int pageSize,
                      std::vector<gem5::auxv::AuxVector<IntType>> extraAuxvs);
 
      public:
        Addr gdtStart() const { return _gdtStart; }
        Addr gdtSize() const { return _gdtSize; }
 
        void clone(ThreadContext *old_tc, ThreadContext *new_tc,
                   Process *process, RegVal flags) override;
 
        X86Process &
        operator=(const X86Process &in)
        {
            if (this == &in)
                return *this;
 
            _gdtStart = in._gdtStart;
            _gdtSize = in._gdtSize;
 
            return *this;
        }
    };
 
    class X86_64Process : public X86Process
    {
      protected:
        class VSyscallPage
        {
          public:
            Addr base;
            Addr size;
            Addr vtimeOffset;
            Addr vgettimeofdayOffset;
 
            VSyscallPage &
            operator=(const VSyscallPage &in)
            {
                if (this == &in)
                    return *this;
 
                base = in.base;
                size = in.size;
                vtimeOffset = in.vtimeOffset;
                vgettimeofdayOffset = in.vgettimeofdayOffset;
 
                return *this;
            }
        };
        VSyscallPage vsyscallPage;
 
      public:
        X86_64Process(const ProcessParams &params,
                      loader::ObjectFile *objFile);
 
        void argsInit(int pageSize);
        void initState() override;
 
        void clone(ThreadContext *old_tc, ThreadContext *new_tc,
                   Process *process, RegVal flags) override;
    };
 
    class I386Process : public X86Process
    {
      protected:
        class VSyscallPage
        {
          public:
            Addr base;
            Addr size;
            Addr vsyscallOffset;
            Addr vsysexitOffset;
 
            VSyscallPage &
            operator=(const VSyscallPage &in)
            {
                if (this == &in)
                    return *this;
 
                base = in.base;
                size = in.size;
                vsyscallOffset = in.vsyscallOffset;
                vsysexitOffset = in.vsysexitOffset;
 
                return *this;
            }
        };
        VSyscallPage vsyscallPage;
 
      public:
        I386Process(const ProcessParams &params,
                    loader::ObjectFile *objFile);
 
        const VSyscallPage &getVSyscallPage() const { return vsyscallPage; }
 
        void argsInit(int pageSize);
        void initState() override;
 
        void clone(ThreadContext *old_tc, ThreadContext *new_tc,
                   Process *process, RegVal flags) override;
    };
 
} // namespace X86ISA
} // namespace gem5
 
#endif // __ARCH_X86_PROCESS_HH__