src/arch/x86/process.hh

   1 /*
   2  * Copyright (c) 2007 The Hewlett-Packard Development Company
   3  * All rights reserved.
   4  *
   5  * The license below extends only to copyright in the software and shall
   6  * not be construed as granting a license to any other intellectual
   7  * property including but not limited to intellectual property relating
   8  * to a hardware implementation of the functionality of the software
   9  * licensed hereunder.  You may use the software subject to the license
  10  * terms below provided that you ensure that this notice is replicated
  11  * unmodified and in its entirety in all distributions of the software,
  12  * modified or unmodified, in source code or in binary form.
  13  *
  14  * Redistribution and use in source and binary forms, with or without
  15  * modification, are permitted provided that the following conditions are
  16  * met: redistributions of source code must retain the above copyright
  17  * notice, this list of conditions and the following disclaimer;
  18  * redistributions in binary form must reproduce the above copyright
  19  * notice, this list of conditions and the following disclaimer in the
  20  * documentation and/or other materials provided with the distribution;
  21  * neither the name of the copyright holders nor the names of its
  22  * contributors may be used to endorse or promote products derived from
  23  * this software without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  26  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  27  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  28  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  29  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  30  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  31  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  32  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  33  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  34  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  35  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  */
  37
  38 #ifndef __ARCH_X86_PROCESS_HH__
  39 #define __ARCH_X86_PROCESS_HH__
  40
  41 #include <string>
  42 #include <vector>
  43
  44 #include "arch/x86/pagetable.hh"
  45 #include "mem/multi_level_page_table.hh"
  46 #include "sim/aux_vector.hh"
  47 #include "sim/process.hh"
  48
  49 class SyscallDesc;
  50
  51 namespace X86ISA
  52 {
  53     enum X86AuxiliaryVectorTypes {
  54         M5_AT_SYSINFO = 32,
  55         M5_AT_SYSINFO_EHDR = 33
  56     };
  57
  58     class X86Process : public Process
  59     {
  60       protected:
  61         Addr _gdtStart;
  62         Addr _gdtSize;
  63
  64         X86Process(const ProcessParams &params, ::Loader::ObjectFile *objFile);
  65
  66         template<class IntType>
  67         void argsInit(int pageSize,
  68                       std::vector<AuxVector<IntType> > extraAuxvs);
  69
  70       public:
  71         Addr gdtStart()
  72         { return _gdtStart; }
  73
  74         Addr gdtSize()
  75         { return _gdtSize; }
  76
  77         void clone(ThreadContext *old_tc, ThreadContext *new_tc,
  78                    Process *process, RegVal flags) override;
  79
  80         X86Process &
  81         operator=(const X86Process &in)
  82         {
  83             if (this == &in)
  84                 return *this;
  85
  86             _gdtStart = in._gdtStart;
  87             _gdtSize = in._gdtSize;
  88
  89             return *this;
  90         }
  91     };
  92
  93     class X86_64Process : public X86Process
  94     {
  95       protected:
  96         class VSyscallPage
  97         {
  98           public:
  99             Addr base;
 100             Addr size;
 101             Addr vtimeOffset;
 102             Addr vgettimeofdayOffset;
 103
 104             VSyscallPage &
 105             operator=(const VSyscallPage &in)
 106             {
 107                 if (this == &in)
 108                     return *this;
 109
 110                 base = in.base;
 111                 size = in.size;
 112                 vtimeOffset = in.vtimeOffset;
 113                 vgettimeofdayOffset = in.vgettimeofdayOffset;
 114
 115                 return *this;
 116             }
 117         };
 118         VSyscallPage vsyscallPage;
 119
 120       public:
 121         X86_64Process(const ProcessParams &params,
 122                       ::Loader::ObjectFile *objFile);
 123
 124         void argsInit(int pageSize);
 125         void initState() override;
 126
 127         void clone(ThreadContext *old_tc, ThreadContext *new_tc,
 128                    Process *process, RegVal flags) override;
 129     };
 130
 131     class I386Process : public X86Process
 132     {
 133       protected:
 134         class VSyscallPage
 135         {
 136           public:
 137             Addr base;
 138             Addr size;
 139             Addr vsyscallOffset;
 140             Addr vsysexitOffset;
 141
 142             VSyscallPage &
 143             operator=(const VSyscallPage &in)
 144             {
 145                 if (this == &in)
 146                     return *this;
 147
 148                 base = in.base;
 149                 size = in.size;
 150                 vsyscallOffset = in.vsyscallOffset;
 151                 vsysexitOffset = in.vsysexitOffset;
 152
 153                 return *this;
 154             }
 155         };
 156         VSyscallPage vsyscallPage;
 157
 158       public:
 159         I386Process(const ProcessParams &params,
 160                     ::Loader::ObjectFile *objFile);
 161
 162         const VSyscallPage &getVSyscallPage() { return vsyscallPage; }
 163
 164         void argsInit(int pageSize);
 165         void initState() override;
 166
 167         void clone(ThreadContext *old_tc, ThreadContext *new_tc,
 168                    Process *process, RegVal flags) override;
 169     };
 170
 171 }
 172
 173 #endif // __ARCH_X86_PROCESS_HH__