process.hh revision 11320:42ecb523c64a 
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#include "mem/multi_level_page_table.hh"
48
49class SyscallDesc;
50
51namespace X86ISA
52{
53    enum X86AuxiliaryVectorTypes {
54        M5_AT_SYSINFO = 32,
55        M5_AT_SYSINFO_EHDR = 33
56    };
57
58    class X86LiveProcess : public LiveProcess
59    {
60      protected:
61        Addr _gdtStart;
62        Addr _gdtSize;
63
64        SyscallDesc *syscallDescs;
65        const int numSyscallDescs;
66
67        X86LiveProcess(LiveProcessParams * params, ObjectFile *objFile,
68                SyscallDesc *_syscallDescs, int _numSyscallDescs);
69
70        template<class IntType>
71        void argsInit(int pageSize,
72                std::vector<AuxVector<IntType> > extraAuxvs);
73
74      public:
75        Addr gdtStart()
76        { return _gdtStart; }
77
78        Addr gdtSize()
79        { return _gdtSize; }
80
81        SyscallDesc* getDesc(int callnum);
82
83        void setSyscallReturn(ThreadContext *tc, SyscallReturn return_value);
84    };
85
86    class X86_64LiveProcess : public X86LiveProcess
87    {
88      protected:
89        X86_64LiveProcess(LiveProcessParams *params, ObjectFile *objFile,
90                SyscallDesc *_syscallDescs, int _numSyscallDescs);
91
92        class VSyscallPage
93        {
94          public:
95            Addr base;
96            Addr size;
97            Addr vtimeOffset;
98            Addr vgettimeofdayOffset;
99        };
100        VSyscallPage vsyscallPage;
101
102      public:
103        void argsInit(int intSize, int pageSize);
104        void initState();
105
106        X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
107        /// Explicitly import the otherwise hidden getSyscallArg
108        using LiveProcess::getSyscallArg;
109        void setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val);
110    };
111
112    class I386LiveProcess : public X86LiveProcess
113    {
114      protected:
115        I386LiveProcess(LiveProcessParams *params, ObjectFile *objFile,
116                SyscallDesc *_syscallDescs, int _numSyscallDescs);
117
118        class VSyscallPage
119        {
120          public:
121            Addr base;
122            Addr size;
123            Addr vsyscallOffset;
124            Addr vsysexitOffset;
125        };
126        VSyscallPage vsyscallPage;
127
128      public:
129        void argsInit(int intSize, int pageSize);
130        void initState();
131
132        void syscall(int64_t callnum, ThreadContext *tc);
133        X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
134        X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i, int width);
135        void setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val);
136    };
137
138    /**
139     * Declaration of architectural page table for x86.
140     *
141     * These page tables are stored in system memory and respect x86 specification.
142     */
143    typedef MultiLevelPageTable<PageTableOps> ArchPageTable;
144
145}
146
147#endif // __ARCH_X86_PROCESS_HH__
148