process.hh revision 7532:3f6413fc37a2 
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#include "sim/process.hh"
46
47class SyscallDesc;
48
49namespace X86ISA
50{
51    enum X86AuxiliaryVectorTypes {
52        M5_AT_SYSINFO = 32,
53        M5_AT_SYSINFO_EHDR = 33
54    };
55
56    class X86LiveProcess : public LiveProcess
57    {
58      protected:
59        Addr _gdtStart;
60        Addr _gdtSize;
61
62        SyscallDesc *syscallDescs;
63        const int numSyscallDescs;
64
65        X86LiveProcess(LiveProcessParams * params, ObjectFile *objFile,
66                SyscallDesc *_syscallDescs, int _numSyscallDescs);
67
68        template<class IntType>
69        void argsInit(int pageSize,
70                std::vector<AuxVector<IntType> > extraAuxvs);
71
72      public:
73        Addr gdtStart()
74        { return _gdtStart; }
75
76        Addr gdtSize()
77        { return _gdtSize; }
78
79        SyscallDesc* getDesc(int callnum);
80
81        void setSyscallReturn(ThreadContext *tc, SyscallReturn return_value);
82    };
83
84    class X86_64LiveProcess : public X86LiveProcess
85    {
86      protected:
87        X86_64LiveProcess(LiveProcessParams *params, ObjectFile *objFile,
88                SyscallDesc *_syscallDescs, int _numSyscallDescs);
89
90        class VSyscallPage
91        {
92          public:
93            Addr base;
94            Addr size;
95            Addr vtimeOffset;
96            Addr vgettimeofdayOffset;
97        };
98        VSyscallPage vsyscallPage;
99
100      public:
101        void argsInit(int intSize, int pageSize);
102        void initState();
103
104        X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
105        void setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val);
106    };
107
108    class I386LiveProcess : public X86LiveProcess
109    {
110      protected:
111        I386LiveProcess(LiveProcessParams *params, ObjectFile *objFile,
112                SyscallDesc *_syscallDescs, int _numSyscallDescs);
113
114        class VSyscallPage
115        {
116          public:
117            Addr base;
118            Addr size;
119            Addr vsyscallOffset;
120            Addr vsysexitOffset;
121        };
122        VSyscallPage vsyscallPage;
123
124      public:
125        void argsInit(int intSize, int pageSize);
126        void initState();
127
128        void syscall(int64_t callnum, ThreadContext *tc);
129        X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
130        X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i, int width);
131        void setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val);
132    };
133}
134
135#endif // __ARCH_X86_PROCESS_HH__
136