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  * Authors: Gabe Black
  38  */
  39
  40 #ifndef __ARCH_X86_PROCESS_HH__
  41 #define __ARCH_X86_PROCESS_HH__
  42
  43 #include <string>
  44 #include <vector>
  45
  46 #include "sim/process.hh"
  47
  48 class SyscallDesc;
  49
  50 namespace X86ISA
  51 {
  52     enum X86AuxiliaryVectorTypes {
  53         M5_AT_SYSINFO = 32,
  54         M5_AT_SYSINFO_EHDR = 33
  55     };
  56
  57     class X86LiveProcess : public LiveProcess
  58     {
  59       protected:
  60         Addr _gdtStart;
  61         Addr _gdtSize;
  62
  63         SyscallDesc *syscallDescs;
  64         const int numSyscallDescs;
  65
  66         X86LiveProcess(LiveProcessParams * params, ObjectFile *objFile,
  67                 SyscallDesc *_syscallDescs, int _numSyscallDescs);
  68
  69         template<class IntType>
  70         void argsInit(int pageSize,
  71                 std::vector<AuxVector<IntType> > extraAuxvs);
  72
  73       public:
  74         Addr gdtStart()
  75         { return _gdtStart; }
  76
  77         Addr gdtSize()
  78         { return _gdtSize; }
  79
  80         SyscallDesc* getDesc(int callnum);
  81
  82         void setSyscallReturn(ThreadContext *tc, SyscallReturn return_value);
  83     };
  84
  85     class X86_64LiveProcess : public X86LiveProcess
  86     {
  87       protected:
  88         X86_64LiveProcess(LiveProcessParams *params, ObjectFile *objFile,
  89                 SyscallDesc *_syscallDescs, int _numSyscallDescs);
  90
  91         class VSyscallPage
  92         {
  93           public:
  94             Addr base;
  95             Addr size;
  96             Addr vtimeOffset;
  97             Addr vgettimeofdayOffset;
  98         };
  99         VSyscallPage vsyscallPage;
 100
 101       public:
 102         void argsInit(int intSize, int pageSize);
 103         void initState();
 104
 105         X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
 106         /// Explicitly import the otherwise hidden getSyscallArg
 107         using LiveProcess::getSyscallArg;
 108         void setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val);
 109     };
 110
 111     class I386LiveProcess : public X86LiveProcess
 112     {
 113       protected:
 114         I386LiveProcess(LiveProcessParams *params, ObjectFile *objFile,
 115                 SyscallDesc *_syscallDescs, int _numSyscallDescs);
 116
 117         class VSyscallPage
 118         {
 119           public:
 120             Addr base;
 121             Addr size;
 122             Addr vsyscallOffset;
 123             Addr vsysexitOffset;
 124         };
 125         VSyscallPage vsyscallPage;
 126
 127       public:
 128         void argsInit(int intSize, int pageSize);
 129         void initState();
 130
 131         void syscall(int64_t callnum, ThreadContext *tc);
 132         X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
 133         X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i, int width);
 134         void setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val);
 135     };
 136 }
 137
 138 #endif // __ARCH_X86_PROCESS_HH__