process.hh revision 8229:78bf55f23338 
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
48class SyscallDesc;
49
50namespace 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        void setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val);
107    };
108
109    class I386LiveProcess : public X86LiveProcess
110    {
111      protected:
112        I386LiveProcess(LiveProcessParams *params, ObjectFile *objFile,
113                SyscallDesc *_syscallDescs, int _numSyscallDescs);
114
115        class VSyscallPage
116        {
117          public:
118            Addr base;
119            Addr size;
120            Addr vsyscallOffset;
121            Addr vsysexitOffset;
122        };
123        VSyscallPage vsyscallPage;
124
125      public:
126        void argsInit(int intSize, int pageSize);
127        void initState();
128
129        void syscall(int64_t callnum, ThreadContext *tc);
130        X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
131        X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i, int width);
132        void setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val);
133    };
134}
135
136#endif // __ARCH_X86_PROCESS_HH__
137